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  ...small communities for a sustainable and ecological future.<br> '''Fill in the form [[Special:ApplicationForm|here]] if you want to take part to howtopedi ==[[Cooling and Heating]]==
  8 KB (814 words) - 14:38, 16 April 2018
• How to Start an Article
  The objective of howtopedia is the collection, translation and promotion of high quality practical information ...easy to understand and maintain, protect the environment, and comply with the principle of sustainability;
  12 KB (1,633 words) - 19:04, 27 August 2010
• How to Use Sun Power
  ...ut it is also possible to tap this source of solar energy as it arrives on the earth's surface. ...other for centuries and have a well-established manufacturing base in most sun-rich developed countries.
  21 KB (3,433 words) - 13:44, 26 March 2010
• How to Build a Windpump (Principles)
  ...ed primarily for the milling of grain and water pumping. The first half of the 20th saw further development, particularly a move toward propeller type win ...ment in remote areas. By the 1920's 6 million windpumps were being used in the USA alone and their manufacture and use had become commonplace on every con
  26 KB (4,084 words) - 17:30, 19 March 2011
• How to Preserve Food with a Solar Dryer
  ...rying, uses much less land and usually gives a better quality product. But the equipment is expensive and requires substantial quantities of fuel or elect ...The justification for solar dryers is that they may be more effective than sun drying, but have lower operating costs than mechanised dryers. A number of
  14 KB (2,103 words) - 09:13, 22 March 2010
• How to Process Spice
  ...n an important industry. The spice trade still has a significant impact on the economy of many countries eg Grenada, Sri Lanka and Indonesia. Small-scale ...quiring money urgently. However, every effort should be made to wait until the spices are fully mature.
  11 KB (1,702 words) - 14:34, 26 December 2010
• Refrigeration for Developing Countries
  Refrigeration plays an important role in developing countries, primarily for the preservation of food, medicine, and for air conditioning. Examples of these ...''grid electricity''', supplied continuously and reliably to every part of the country. In contrast, refrigeration is required in developing countries to
  22 KB (3,119 words) - 19:25, 29 December 2013
• What to Do with Shea Nuts (Karité, Nku, Bambuk)
  ...to remove kernels. Shea nuts are mainly exported as smoked kernels'''.''' The kernels will be further dried before any additional processing is carried o ...With the traditional technique, the fat obtained is between 25 and 40% of the dry kernel weight.
  7 KB (1,046 words) - 16:07, 10 December 2009
• How to Build a School Building in Developing Countries
  ...r usually a small number. Local authorities are sometimes also involved in the building of schools, usually in urban areas. ...0, 11 or 12, or secondary - for pupils within an age range of 10 to 19. In the developing world secondary school often have fully grown youth in them and
  64 KB (10,747 words) - 17:37, 19 March 2011
• How to Provide Lighting in Rural Areas-Principles-
  ...ny people to imagine living at night without being able to obtain light at the flick of a switch. However, about half of humanity, over 2500 million peopl Lighting in the rural areas of developing countries is generally provided by candles or ker
  19 KB (2,933 words) - 18:22, 23 April 2010
• How to Make Alternatives to Portland Cement
  ...the vital binding agent in concretes, mortars and renders, and is used for the production of walling blocks and roofing tiles. ...nvention in the first half of the 19th century, Portland cement has become the most widely available cementitious material. Its dominance over alternative
  19 KB (2,793 words) - 19:41, 17 March 2011
• How to Provide Electricity in Rural Areas-Principles-
  ...and these will be looked at briefly in this fact sheet. In urban areas of the developing world grid connection is commonplace. '''The grid'''
  17 KB (2,647 words) - 18:16, 23 April 2010
• How to Purify Water With Solar Distillation
  ...rification. This requires an energy input, as heat, solar radiation can be the source of energy. In this process, water is evaporated, thus separating wat ...200,000 inflatable plastic stills were made to be kept in life-crafts for the US Navy.
  14 KB (2,140 words) - 11:01, 4 March 2014
• How to Make Bricks - Assessing the Technical Problems of Brick Production
  ...lved, particularly for brickworks suffering heavy losses or unable to meet the standard their market demands.<br /> ...ed bricks, Alto Mayo, Peru. To be noted are the cracks and deficiencies in the bricks. © Practical Action/Theo Schilderman
  15 KB (2,386 words) - 17:31, 19 March 2011
• How to Build a Tray Dryer
  ...hich include tray and tunnel dryers, spray, roller and freeze dryers. With the exception of tray dryers, none of these are appropriate, in terms of cost a ...product being dried. While small tray dryers are available from Europe and the USA, where they are used in pilot plants and Universities, their cost (in e
  17 KB (2,540 words) - 11:53, 26 March 2010
• How to Heat Water with Sun Power
  *'''Idea: Heat Water by Sun Power''' ...water, left exposed to the sun will be raised in temperature. Solar water heating systems are designed to make convenient use of this phenomenon.
  16 KB (2,447 words) - 18:04, 25 February 2012
• Biomass (Technical Brief)
  ...basic open fire used to provide heat for cooking, warming water or warming the air in our home. More sophisticated technologies exist for extracting this ...loited by humans and is still the main source of energy for more than half the world’s population for domestic energy needs.
  24 KB (3,697 words) - 08:17, 27 April 2010
• How to Make Brown Sugar
  ...variety of molasses and syrups, demerara, muscovado and turbinado sugars. The second type is coated brown or 'soft' sugars, manufactured demerara, and a ...n which is described in the Practical Action's technical briefs on gur and the open pan sulphitation (OPS) sugar processing.
  11 KB (1,662 words) - 10:05, 10 April 2010
• How to Preserve Food by Drying
  ...vent (or inhibit) microorganisms and hence preserve the food and to reduce the weight and bulk of food for cheaper transport and storage. ...s only minor nutritional significance as dried foods form one component in the diet.
  25 KB (4,082 words) - 14:58, 11 March 2010
• Biomass Roofing Materials- Principles
  =The Basic of Biomass Roofing= '''The article focuses on thatch and wood tiles, and covers industrially-produced
  89 KB (13,774 words) - 17:07, 10 December 2009

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