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Bamboo for land restoration and income generation

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by Shantha Ramanayake

Bamboo is identified as a high priority crop for fast re-vegetating of bare lands because of its ability to grow in degraded soils and steep slopes where other plants do not successfully grow. It grows rapidly with minimum inputs and is endowed with an extensive underground network of rhizomes and roots that bind soil and store water. In addition to reclamation of degraded land, there is an added benefit as a commodity with high potential for income generation as the global bamboo market stands at over US $ 72 million and is expected to rise further.

Land degradation: Land degradation is an issue faced by many countries all over the world and has serious adverse effects on the environment and food security. It is a result of loss of biodiversity, soil erosion and depletion, soil pollution, water shortage and other factors. Land degradation is mainly induced by human activities apart from natural causes more prevalent now due to climate change. Agricultural and plantation soils have been continuously cultivated over many years focusing on increasing harvests without much concern on soil conservation and health. This has led to soil infertility and loss of production threatening food security. In addition, extensive areas of forests have been cleared with no regard to the environment. Such practices that bring about short term benefits have long term costs. According to the United Nations Convention to Combat Desertification (UNCCD) latest review (May 2021), 169 countries are affected by land degradation or drought and the average loss in production is reported to be about nine percent of the GDP. The worst affected are the central African countries where the total loss of production is estimated as a staggering 40 percent of the GDP. It would cost over 4.5 trillion dollars to take action now to halt this alarming trend. Thus there is much concern globally to rehabilitate degraded soils.

Sri Lanka is no exception. Although the country is endowed with natural resources which have sustained its people over a long period, these resources have deteriorated at an exponential rate over the last century. About 0.5% of forest land was converted to other land use types from 2000 to date. The plantation sector is affected considerably and some plantations have been abandoned. The productivity of 34% of the land area of the island is either declining or under stress and has led to increased poverty. The Government of Sri Lanka is a signatory to the UNCCD commitment to sustainable development goals and thus has a responsibility in preventing further land deterioration and is committed to restore degraded land.

Bamboo for land restoration: Among many other trees and crops identified for land restoration, a recently identified high priority crop is bamboo. Although the uses of bamboo are now well-known, information about success or failure in using bamboo for landscape restoration is limited. However, case studies in many countries show its feasibility.

Bamboo has been selected for fast re-vegetating bare land because of its ability with minimum inputs to grow in degraded soils and steep slopes where other plants fail to grow; it is also endowed with an extensive underground network of rhizomes and roots that bind soil and store water. This underground network is reported to extend up to 100 km per hectare in a bamboo plantation and grow to a depth of 60 cm and last many years. Even if the above ground biomass is destroyed the rhizome is able to regenerate fast.

Bamboo is the fastest growing plant on earth and a new culm emerging from the rhizome may grow up to one meter a day! For this reason bamboo can remove toxins and excess nitrogen from polluted soils and water ways fast. Bamboo sheds leaves during dry weather to conserve water and the leaf litter adds to soil carbon. Once a bamboo stand is established, surface run off during rains is minimized and water is stored in the soil and within the plant. Thus bamboo is able to re-vegetate and restore the productivity of unproductive land over a short period of time. Depending on the species, harvesting bamboo poles is possible three to six years after establishment and annually thereafter. Sustainable harvesting encourages fast growth in the following years. Most importantly the bamboo thus generated has an additional benefit as a commodity of high economic value.

Some case studies of land restoration by bamboo and recommendation to local situations: Bamboo planting programs need to be planned scientifically with due consideration for site – species matching, planting density, planting season etc. and management practices. Although much data is not available covering all these aspects, past experiences elsewhere could be considered.

A “Policy synthesis report, ‘Bamboo for Land Restoration’, FAO, INBAR, 2018” reported a few cases. A severely degraded land abandoned after brickmaking in Allahabad India, recovered remarkably after planting with bamboo. After 20 years the water table rose by 10 meters and it was possible to incorporate trees and other crops into this land as soil was enriched with 6-8 inches of humus by bamboo each year. Thus the farmers’ income increased. An added benefit was that they were able to get an additional income by selling bamboo poles to new industries that emerged in the vicinity. As a result of this success the project was scaled up to cover 100,000 hectares of degraded land in 600 villages in India.

In Chishui China bamboo plantations had 25 percent less water run off than an adjacent sweet potato farm and the bamboo plantation reduced soil erosion by 80%. A study in Ghana showed that Bambusa balcoa did not survive in an area with very low rainfall whereas Oxytenanthera abyssinica, a local species did better. In Colombia, planting Guadua bamboo reduced the compactness of soil making it more porous and improved water regulation and nutrient recycling. The farmers were able to increase their income by exploiting bamboo. In Nepal bamboo planting helped to reduce soil erosion and flood damage.

Considering our tea lands, over 150 years of tea cultivation has heavily degraded the soils and there is serious concern about a continuous decline of tea yields. Much of these lands will have to undergo long term rehabilitation with planting of perennial trees. Bamboo is ideal in this regard. There are many more abandoned and degraded lands as well as river and stream banks, boundaries of garbage dumps etc. which can be used to plant bamboo.

In order to succeed, the Government must take an interest and elevate the status of bamboo to a plantation crop with environmental, social and economic returns. Subsidies and supportive regulations will influence local participation to take the bamboo sector forward.

Benefits in planting bamboo: Woody bamboos are a valuable resource that can yield high socio-economic returns and environmental benefits. This is evident considering the global bamboo market which was valued at US$ 72 billion in 2019 and expected to rise at the rate of 5.5%. Bamboo has diverse applications but the rapid rise in bamboo industry was with the rediscovery of bamboo as a timber substitute minimizing the demand for valuable timber and pressure on forest resources. The bamboo industry is expected to rise continuously as the demand for sustainable green products are high.

Bamboo is utilized diversely ranging from high to medium and low technology applications. It is used in making timber substitutes such as bamboo paneling, mat board, plywood, veneer, strand woven bamboo, MDF board etc. These are used in making furniture and in buildings as flooring, paneling and even roofing. Manufacture of bamboo paper pulp can be carried out at a high tech industrial level and also as a cottage industry as happens in China. This is the oldest industrial application of bamboo which was started in India and China. Bamboo fibre in textile manufacture is a high tech industry. Canning of edible bamboo shoots has potential. Medium level industrial applications include manufacture of activated charcoal, biochar, bamboo mats, blinds, incense stick etc. while low level technologies include making handicrafts, charcoal and wood chips for use as fuel.

The situation in Sri Lanka: The first viable concept paper for establishing a bamboo industry in Sri Lanka was approved in 1992 and this was formulated after the tissue culture technique of mass propagating giant bamboo (Dendrocalamus giganteus) was developed by original research in the Institute of Fundamental Studies in Kandy. Its downstream application was the outcome of the Riverine Bamboo Project. This is presently under the purview of the Mahaweli Authority. The activities of the project were to initially establish a tissue culture laboratory and mass produce giant bamboo to be planted along the Mahweli and its tributaries with the objective of stabilizing the river bank and later to use the bamboo resource in industrial applications especially to make paper pulp.

The Mahaweli Authority claims that they have planted one million bamboo plants in riverbanks and catchment areas. It is reported that about 5,000 Ha of bamboo exist in Mahaweli catchment areas and forest reserves. Private sector has also established some bamboo but its extent not known. The tissue culture lab can mass produce planting stocks of valuable species of bamboo including Dendrocalamus hookeri, D. giganteus, D. asper, Bambusa vulgaris, B. ventricosa and others to supply palnting programmes.

The Industrial Technology Institute has carried out studies and developed the process of canning edible bamboo shoots and producing bamboo charcoal. This is the organization representing Sri Lanka in the International Network of Bamboo and Rattan (INBAR).

The UNIDO also had a bamboo project locally to promote the bamboo industry in making timber substitutes and identification of land for bamboo cultivation together with the Ministry of Industrial Development. They have established a Training Centre now under the Industrial Development Board.

The National Crafts Council promotes handicrafts and cottage industry has a training centre in Kuruwita.

Local market from available resources is limited to the following:

a. Blinds -for local and export markets

b. Handicraft – ships, pencil holders, vases, lamp sheds, tablemats

c. Incense sticks – machine made

d. Basket-ware, mats, furniture

e. Fresh edible shoots

f. Ornamental bamboo plants nurseries

g. Raw material: bamboo pole for construction/agriculture/ fisheries

h. Charcoal

Overall, the value of bamboo related product imports to Sri Lanka, grew by 40% from USD 0.5 Mn. in 2011 to USD 2 Mn. in 2015. Bamboo flooring accounted for nearly 60% of the total trade value of bamboo related imports in 2015.

The imported bamboo material/products are:

a. Flooring – imported, as a substitute for wood flooring

b. Yarn – imported from China for textile industry

c. Wood based panels – plywood, particle boards

d. Charcoal – export market is being developed

e. Canned edible shoots

f. Incense sticks – imported mostly from India, now banned

g. Bamboo sticks from China and Vietnam, importations, banned and relaxed

h. Many other home utility items – furniture, bamboo straws, ornaments,

Most of the imports could be produced in Sri Lanka, if the raw material and technology is available. The bamboo plantations should obtain Forest Stewardship Council certification (FSC) if they intend to export. With many countries establishing bamboo plantations, there is a demand to export bamboo tissue culture plants of ornamental or utility value. We have the potential of turning out bamboo charcoal on a sustainable basis to replace wood consumption and prevent deforestation.

Bamboo still remains an untapped avenue for economic growth in Sri Lanka although there are entrepreneurs showing interest. It is regretted that this country unlike many of her neighbors has hitherto hardly devoted attention to exploit the vast potential of bamboo. Government support is essential.

The Lanka Network of Bamboo and Rattan (SRINBAR) initiated in 2005 is now in the process of promoting cultivation of bamboo to cater to developing new industries and to network entrepreneurs involved or hoping to get involved in various aspects of bamboo. We are committed to taking the bamboo sector forward and hope many more will join us in this endeavor.

(The writer is a scientist who did research on many aspects of bamboo while working as a senior scientist in the National Institute of Fundamental Studies, Kandy, as the project leader of the Plant Biotechnology Project. Now retired she is involved as a consultant in plant tissue culture including bamboo. She’s also on the Advisory Committee of the Lanka Network of Bamboo and Rattan (SRINBAR) of which she’s a founder member.)



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The Ramadan War

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Benjamin Netanyahu, Donald Trump and Mojtaba Khamenei

A Strategic Assessment of a Conflict Still Unresolved

The Unites States of America and its ally, Israel attacked Iran on 28 February, or the 10th day of the month of Ramadan. More than a month of intense fighting has passed since, and the Ramadan War has settled into a grinding, attritional struggle that defies early declarations of victory. Despite sustained U.S. and Israeli air and naval bombardment, Iran remains standing, and continues to strike back with a level of resilience that has surprised many observers. The conflict has evolved into a contest of endurance, adaptation, and strategic innovation, with each side attempting to impose costs the other cannot bear.

Iran’s response to the overwhelming airpower of its adversaries has been both simple and devastatingly effective: saturate enemy defences with swarms of inexpensive drones and older ballistic missiles, forcing them to expend costly interceptors and reveal radar positions, and then follow up with salvos of its most advanced precisionguided missiles. This layered approach has inflicted severe physical damage on Israel and has shaken its national morale. The country has endured repeated missile barrages from Iran and rocket fire from Hezbollah, straining its airdefence network and pushing its civilian population to the limits of endurance.

The United States, meanwhile, has been forced to evacuate or reduce operations at several bases in the Gulf region due to persistent Iranian drone and missile attacks. For both the U.S. and Israel, the war has become a test of strategic credibility. For Iran, by contrast, victory is defined not by territorial gains or decisive battlefield outcomes, but by survival, and by continuing to impose costs on its adversaries.

The central strategic objective for the U.S. has now crystallised: reopening the Strait of Hormuz to secure global energy flows. Ironically, the Strait was open before the war began; it is the conflict itself that has rendered it effectively closed. Air and naval power alone cannot achieve this objective. The geography of the Strait, combined with Iran’s layered defences, means that any lasting solution will require ground forces, a reality that carries enormous risks.

U.S. Strategic Options

The United States faces five broad operational options, each with significant drawbacks.

1. Seizing Kharg Island

Kharg Island handles roughly 90% of Iran’s oil exports, making it an attractive target. However, it lies only a short distance from the Iranian mainland, where entrenched Iranian forces maintain dense networks of missile batteries, drones, artillery, and coastal defences. Any attempt to seize Kharg would require first neutralising or capturing the adjacent coastline, a costly amphibious and ground operation.

Even if successful, this would not reopen the Strait of Hormuz. It would merely deprive Iran of export capacity, which is not the primary U.S. objective. At least ostensibly not; there are those who argue that the U.S. simply wants to take over Iran’s petroleum (see below).

2. Forcing the Strait of Hormuz by Naval Power

Sending U.S. naval forces directly through the Strait is theoretically possible but operationally hazardous. Iran has mined all but a narrow channel hugging its own shoreline. That channel is covered by overlapping fields of antiship missiles, drones, artillery, and coastal radar. Clearing the mines would require prolonged operations under fire. Attempting to push through without clearing them would risk catastrophic losses.

3. Capturing Qeshm, Hengam, Larak, and Hormuz Islands

These islands dominate the Iranian side of the Strait and host radar, missile, and drone installations. Capturing them would degrade Iran’s ability to close the Strait, but the islands are heavily fortified, and the surrounding waters are mined. Amphibious assaults against defended islands are among the most difficult military operations. Even success would not guarantee the Strait’s longterm security unless the mainland launch sites were also neutralised.

4. Invading Southern Iraq and Crossing into Khuzestan

This option would involve U.S. forces advancing through southern Iraq, crossing the Shatt alArab waterway, and pushing into Iran’s Khuzestan province — home to most of Iran’s oilfields. The terrain is difficult: marshes, waterways, and narrow approaches. Iranian forces occupy the high ground overlooking the plains.

While this route would allow Saudi armoured forces to participate, it would also expose U.S. and allied logistics to attacks by Iraqi Shia militias, who have already demonstrated their willingness to target U.S. assets. The political and operational risks are immense.

5. Capturing Chabahar and Advancing Along the Coast

The most strategically promising — though still costly — option is seizing the port of Chabahar in southeastern Iran and advancing roughly 660 kilometres along the coast toward Bandar Abbas. This approach offers several advantages:

· Distance from Iran’s core population centres complicates Iranian logistics.

· Chabahar’s deepwater port (16m draught)

would provide a valuable logistics hub.

· U.S. carriers could remain at safer standoff distances

, supporting operations without entering the Strait.

· The coastal route allows naval gunfire and missile support

to assist advancing ground forces.

· Local Baluchi insurgents

could provide intelligence and limited support.

· Capturing Bandar Abbas would

outflank Iran’s island defences and effectively reopen the Strait.

This option is likely to form the backbone of any U.S. ground campaign, potentially supplemented by diversionary attacks by regional partners to stretch Iranian defences.

The Limits of U.S. Superiority

The United States retains overwhelming superiority in naval power and manned airpower. But whether this advantage translates into dominance in unmanned systems or ground combat is far from certain.

The 2003 invasion of Iraq is often cited as a model of U.S. military prowess, but the comparison is misleading. Iraq in 2003 had been crippled by a decade of sanctions. Its forces lacked modern mines, antitank missiles, and effective air defences. Tank crews had little training; some could not hit targets at pointblank range. RPG teams were similarly unprepared. The U.S. enjoyed numerical superiority in the theatre and total control of the air, allowing it to isolate Iraqi units and prevent reinforcement.

Even under those favourable conditions, Iraqi forces managed to delay the U.S. advance. At one point, forward U.S. units nearly ran out of ammunition and supplies, forcing the diversion of forces intended for the assault on Baghdad to secure the lines of communication.

Iran is not Iraq in 2003. Its armed forces and industrial base have adapted to nearly half a century of sanctions. It produces its own drones, missiles, artillery, and armoured vehicles. It has built extensive underground facilities, hardened command posts, and redundant communication networks.

Moreover, the battlefield itself has changed. The RussoUkrainian war demonstrated that deep armoured penetrations – once the hallmark of U.S. doctrine – are now extremely vulnerable to drones, loitering munitions, and precision artillery. The result has been a return to attritional warfare reminiscent of the First World War, with front lines stabilising into trench networks.

Yet, as in the First World War, stalemate has been broken not by massed assaults but by small, highly trained teams infiltrating thinly held lines, identifying targets, and guiding drones and artillery onto enemy positions deep in the rear. Iran has studied these lessons closely.

Mosaic Defence and Transformational Warfare

Iran’s military doctrine has evolved significantly over the past two decades. Its “mosaic defence” decentralises command and control, ensuring that even if senior leadership is targeted, local units can continue operating autonomously. This structure proved resilient during the initial waves of U.S. and Israeli strikes.

Iran has also absorbed lessons from U.S. “shock and awe” operations. The botched U.S. invasion of Grenada in 1983 exposed weaknesses in joint operations, prompting the development of “effectsbased operations,” “rapid dominance” and the broader concept of “transformational warfare.” These doctrines (better known colloquially as “Shock and Awe”), influenced by Liddell Hart and Sun Tzu, emphasised simultaneous strikes on strategic targets to paralyse the enemy’s decisionmaking.

While the U.S. struggled to apply these concepts effectively in Iraq and Iran, Tehran has adapted them for asymmetric use. Its drone and missile campaigns have targeted not only military assets but also economic infrastructure and psychological resilience. Israel’s economy and morale have been severely tested, and the United States finds itself entangled in a conflict that offers no easy exit.

Iran has also pursued a broader strategic objective: undermining the petrodollar system that underpins U.S. financial dominance. By disrupting energy flows and encouraging alternative trading mechanisms, Iran seeks to weaken the economic foundations of U.S. power.

Will the USA Achieve Its War Aims?

The United States’ core objective appears to be securing control over global energy flows by reopening the Strait of Hormuz and limiting China’s access to Middle Eastern oil before it can transition to alternative energy sources. Whether this objective is achievable remains uncertain.

A ground campaign would be long, costly, and politically fraught. Iran’s defences are deep, layered, and adaptive. Its drone and missile capabilities have already demonstrated their ability to impose significant costs on technologically superior adversaries. Regional allies are cautious, and global support for a prolonged conflict is limited.

The United States retains overwhelming military power, but power alone does not guarantee strategic success. Iran’s strategy is simple: survive, adapt, and continue imposing costs. In asymmetric conflicts, survival itself can constitute victory.

In Frank Herbert’s Dune, the protagonist, Paul Muad’dib says “he who can destroy a thing, controls a thing.” This is the essence of Iranian strategy – they have a stranglehold on petroleum supply, and can destroy the world economy. Trump has had to loosen sanctions on both Iran’s and Russia’s oil, simply to prevent economic collapse.

The Ramadan War has already reshaped regional dynamics. Whether it reshapes global power structures will depend on how the next phase unfolds, and whether the United States is willing to pay the price required to achieve its aims.

by Vinod Moonesinghe

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Nayanandaya:A literary autopsy of Sri Lanka’s Middle Class

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“Nayanandaya,” meaning the enchantment of indebtedness, is Surath de Mel’s latest novel. True to his reputation as a maximalist writer, de Mel traverses the labyrinth of middle-class struggles; poverty, unemployment, the quest for education, through a father’s fragile dreams. The novel unfolds around Mahela, his son, his friendships, and the fragile relationships that keep him tethered to life.

“Happiness is not a destination; it is a journey. There are no shortcuts to it. At some point, the path you thought was right will be wrong. You have to make sacrifices for it.”

These words, uttered by the protagonist Mahela to his ten-year-old son, is the silent mantra of every middle-class parent. A common urban middle-class father’s yearning for his child to climb the ladder he himself could not ascend.

A Socio-Political Mirror

Sri Lanka’s middle class remains trapped in paradox. They are educated but underemployed, salaried but indebted, socially respected yet politically invisible. Structural inequalities, economic volatility and populist politics inclusively contribute to keep them “forever middle”.

Through protagonist Mahela, who is sometimes a graphic designer, sometimes a vendor and always a failure Surath de Mel sketches the deficiencies of an education system that does not nurture skills of the students. Sri Lanka boasts about high literacy rates, yet the economy cannot absorb the thousands of graduates produced into meaningful work. Underemployment becomes the inheritance of the middle class. With political connections often the stories can be transformed. De Mel pens it in dark humour to expose these truths:

“Some notorious writer once sneered in a newspaper, ‘Give your ass to the minister, and you’ll earn the right to keep it on a bigger chair.’ Countless people waiting in ministers’ offices, pressing

their backsides to seats, carrying the weight of their own lives.”

Childhood Trauma and Its Echoes

Surath de Mel frequently weaves psychoanalysis into his fiction. In Nayanandaya, he captures the lingering shadows of childhood trauma. Mahela, scarred by a loveless and fractured youth, suffers phobic anxiety and depression, apparently with a personality disorder as an adult. His confession at the psychologist reveals it out:

“Childhood? I didn’t have one. I was fifteen when I was born.”

Here, Mahela marks his true birth not at infancy, but at the death of his parents. This statement itself reveals the childhood trauma the protagonist had gone through and the reader can attribute his subsequent psychological struggles as the cause of it.

Surath de Mel

From a Lacanian perspective, trauma is not just something that happens to a child; it is a deep break in how the child understands the world, themselves, and others. Some experiences are too painful to be put into words. Lacan calls this the Real — what cannot be fully spoken or explained. This pain does not disappear but returns later in life as anxiety, fear, or obsessive compulsive disorder.

This trauma disturbs the child’s sense of self and their place in society. When language fails to make sense of loss, the mind creates fantasies to survive. These fantasies quietly shape adult desires, relationships, and choices.

In Nayanandaya, childhood trauma of the protagonist does not stay buried — it lives on, shaping the adulthood in unseen ways. In the narrative, Mahela’s struggles are not just personal failures but the result of a past that was never given words.

Tears of Fathers – Forgotten in Sri Lankan Literature

Sri Lankan literature has long been attentive to suffering — especially rural poverty, social injustice, and the silent endurance of women and single mothers. Countless novels, poems, and songs have given voice to maternal sacrifice, female resilience, and women’s oppression.

Yet, within this rich narratives, the quiet grief of the urban middle-class father remains mostly unseen. Rarely does fiction pause to examine the emotional lives of men who shoulder responsibility without language for their pain. These masculine tears are private, swallowed by routinely and masked by humour or silence. Definitely never granted literary space.

In Nayanandaya, Surath de Mel breaks this silence. Through Mahela, he lends voice to these overlooked men — fathers whose love is expressed through sacrifice rather than speech. However, de Mel does not romanticise the tears. Rather he humanises them. He allows their vulnerabilities, anxieties, and quiet despair to surface with honesty and compassion. In doing so, Nayanandaya fills a striking gap in Sri Lankan literature, reminding us that fathers, too, carry invisible wounds.

Literary value

With Nayanandaya, Surath de Mel reaches a new pinnacle in his literary craft. His language is dense yet lyrical, enriched with similes, metaphors, irony, and a full range of literary tools deployed with confidence and control.

One of the novel’s most touching narrative choices is the personification of Mahela’s son’s soft toy, Wonie. Through personified Wonie, de Mel captures the two most touching incidents in the entire novel . This simply reveals the author’s artistic maturity, transforming a simple object into a powerful emotional conduit that anchors the novel’s tenderness amidst its despair.

At a deeper symbolic level, Mahela himself can be read as more than an individual character, but a metaphor for Sri Lanka — a nation struggling under economic hardship, clinging to impractical dreams, witnessing the migration of its people, and drifting towards a slow, painful exhaustion. His personal failures could mirror the broader decay of social and economic structures. This symbolic reading lends Nayanandaya a haunting national resonance.

Today, many write and many publish, but only a few transform language into literature that lingers in the reader’s mind long after the final page. Surath de Mel belongs to that rare few. In a literary landscape crowded with voices, he remains devoted to art rather than popularity or trend. As a scholar of Sinhala language and literature, de Mel writes with intellectual depth, dark humour, and deep human empathy.

In conclusion, Nayanandaya is not merely a story; it is social commentary, psychoanalytic reflection, and tragic poetry woven into richly textured prose. With this novel — a masterful interlacing of love, debt, and fragile dreams — Surath de Mel engraves a distinctly Dostoevskian signature into Sinhala literature.

Reviewed by Dr. Charuni Kohombange

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Domestic Energy Saving

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Around 40 percent of the annual energy we use is consumed in domestic activities. Energy is costly, and supply is not unlimited. Unfortunately, we realize the importance of energy – saving only during the time of a crisis.

If you adopt readily affordable energy-saving strategies, you will cut down your living expenditure substantially, relieving the energy burden of the nation. Here are some tips.

Cooking:

Cooking consumes a good portion of domestic energy demand and common practices, and negligence leads to 30 – 40 percent wastage. A simple experiment revealed that the energy expenditure in boiling an egg with the usual unnecessary excess water in an open pan is nearly 50 percent higher than boiling in a closed lid pan with the minimal amount of water. In an open pan, a large quantity of heat is lost via convection currents and expulsion of water vapor, carrying excessive amounts of heat energy (latent heat of vaporisation). Still, most of us boil potatoes for prolonged intervals of time in open receptacles, failing to realise that it is faster and more efficient to boil potatoes or any other food material in a closed pan. About 30 – 40 percent of domestic cooking energy requirements can be cut down by cooking in closed-lid pans. Furthermore, food cooked in closed pans is healthier because of less mixing with air that causes food oxidation. Fat oxidation generates toxic substances. In a closed- lid utensil (not tightly closed), food is covered with a blanket of water vapor at a positive pressure, preventing entry of air and therefore food oxidation.

Overcooking is another bad habit that not only wastes energy but also degrades the nutritional value of food.

Electric kettle:

For making morning or evening tea or preparing tea to serve a visitor. Do not pour an unnecessarily large quantity of water into the electric kettle. Note that the energy needed to make 10 cups of tea is ten times that of one cup.

Electric Ovens:

Avoid the use of electric ovens as far as possible. Remember that foods cooked at higher temperatures are generally unhealthy, and even carcinogens are formed when food is fried at higher temperatures in an oven. If ever you need to bake something in an oven, limit the number of times you open the door. Use smaller ovens adequate for the purpose and not larger ones just for fashion.

Refrigerators:

Refrigerators consume lots of energy. Do not use over-capacity refrigerators just for fashion. Every time you open the fridge, more electricity is used to reset the cooling temperature. Plan your access to the appliance accordingly. Check whether the doors are properly secured and there are no leakages. Keep the fridge in a cooler location, not hit by direct sunlight and away from warmer places in the kitchen. Remember that turning off the fridge frequently will not save energy, instead it draws more energy.

Use of gas burners:

Do not use oversized utensils. Keep the lid closed as far as possible to prevent the escape of heat. Remember that excessive amounts of heat energy are carried away by a large surface-area conducting utensil. Do not open the gas vent to allow the flame to flash outside the vessel. A flame not impinging on the pan would not heat it, and gas is wasted. Ensure that the flame is blue. Frequently check whether gas vents are clogged with rust and carbon. Frequently, cooking material in the pan drops into the gas vents, and salt there corrodes the gas vents. Cleaning and washing would be necessary. Do not prolong cooking, taking time to prepare ingredients and adding them to the pan intermittently. Add ingredients at once and before switching the burner. If the preparation of a dish is prolonged to slow the cooking, use earthenware pots rather than metallic ones. An earthenware pot, being thermally less conducting retain heat.

Firewood for cooking:

Do not attempt to eliminate the use of firewood in cooking. If you are living in a village area, the exclusive use of LPG gas is an unnecessary expenditure. Large smoke-free, efficient oven designs are now available. If you are compelled to use gas, keep the option of firewood ovens, especially for prolonged cooking. Admittedly, there are locations, especially in cities, where the use of firewood is unsuited.

Hot water showers:

Before installing hot water showers, reconsider whether they are really necessary in a hot tropical climate. Go for solar water heaters, although the installation cost is high. Instant water heaters consume much less electricity compared to geysers with water tanks. Now, cheap and safe instant water heaters are available.

Lighting:

Arrange and design your residence to optimise daytime illumination until late evening. If you are constructing a new house, take this issue into account. Use LED lamps, which provide the same illumination for 85 percent less energy. In study rooms and areas that require prolonged illumination, paint the walls white. Angle – poised LED lamps with very low voltage are available. Use them for reading and studies. Routinely clean the surfaces of all lamps. Dust deposition cuts off light.

Air conditioning and ventilation:

Air conditioning consumes prohibitively large quantities of electrical energy. You can avoid air conditioning by optimising ventilation. The principle is to have air entry points (windows) in the house near the ground level and exit points (vents or windows) near the roof. Ground level is cooler, and the region near the roof is warmer. Thus, a cool air current enters the house near the ground level and hot air is drawn by the vents near the roof. The region near the ground can be rendered cooler by planting trees. Architectural designs are available to optimise this effect. You can sense the direction of air motion by holding a thin strip of paper near the windows at the ground and near the roof level. In addition to ceiling fan, install exhaust fans in the upper points of the house to remove hot air and draw cooler air through windows near the ground. Reduce the amount of sunlight hitting the roof by shading with trees. There are techniques for increasing the reflectance of the roof with paints and other designs.

Transportation:

A good portion of your budget is drained by transportation. Irrespective of who you are, use public transport if convenient and available. As much as possible, use the telephone and email to get your things done. If the officers do not comply for no valid reason, complain. Plan your trips to the town to do several things at the same time. Whenever possible, plan to share transport. Buy energy – efficient small vehicles. Routinely examine your vehicle for energy efficiency, i.e. correct tire pressure etc.

Charge electric vehicles off peak hours. Slow charging reduces heat generation in the circuit, reducing energy loss.

Energy is costly and limited in supply. Everything you do consumes energy. Be energy conscious in all your deeds. That attitude will reduce your expenditure, lessen the environmental degradation and financial burden of the nation in importing fuel.

Educating the general public is the most effective way of implementing energy-saving strategies.

By Prof. Kirthi Tennakone
(kenna@yahoo.co.uk)

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