設(shè)計(jì)類外文翻譯--利用太陽能灶烹飪-其他專業(yè)-文庫吧
2025-12-16 02:13 本頁面
【正文】 l。 he turned back then to the cooking challenge and developed a number of solar ovens, stills, pumps, and even electricity. Late in the 19th century, other pioneers in the development of solar thermal (heat generating) technologies include Aubrey Eneas, an American who followed up on the work of Mouchot and formed the first solar power pany, building a giant parabolic reflector in the southwest USA. Frank Shuman formed the Sun Power Company in Cairo to promote a solar driven water pumping system, and later a parabolic concentrator generating electricity. Other solar innovations have followed: motors and engines, hot water heaters, photovoltaic lighting, even crematoria. But throughout history, as in Greece and Rome and the Mouchot story, progress has repeatedly been interrupted by fluctuations in availability or cost of alternative fuels for all the above purposes. More recently, Amory Lovins, writing in a Forward to the Buti and Perlin book, reminds us that today ... we speak of producing oil as if it were made in a factory。 but only God produces oil, and all we know is how to mine it and burn it up. Neglecting the interests of future generations who are not here to bid on this oil, we have been squandering in the last few decades a patrimony of hundreds of millions of years. We must turn back to the sun and seek elegant ways to live within the renewable energy ine that it bestows on us . He goes on to advise that countless earlier cultures have experienced dwindling fuel resources and then were forced to rediscover earlier knowledge about practical solar energy, bemoaning the absurdity of having to rediscover and reinvent what should have been practiced continuously. This document hopes, in some small way, to prevent that scenario from happening yet again. Chapter 2 Classification of solar stove The first is a box cooker： It is designed with a special wall that shines or reflect s sunlight into the box. Heat gets trap ped under a piece of glass or plastic covering the top of the cooker. A box oven is effective for slow cooking of large amounts of food. The second kind is a panel cooker： It includes several flat walls, or panels, that directly reflect the sun39。s light onto the food. The food is inside a separate container of plastic or glass that traps heat energy. People can build panel cookers quickly and with very few supplies. They do not cost much. In Kenya, for example, panel cookers are being manufactured for just two dollars. The third kind of is a parabolic cooker： It has rounded walls that aim sunlight directly into the bottom of the oven. Food cooks quickly in parabolic ovens. However, these cookers are hard to make. They must be reaimed often to follow the sun. Parabolic cookers can also cause burns and eye injuries if they are not used correctly. You can make solar ovens from boxes or heavy paper. They will not catch fire . Paper burns at two hundred thirtytwo degrees Celsius. A solar cooker never gets that hot. Solar ovens cook food at low temperatures over long periods of time. This permit s people to leave food to cook while they do other things. Chapter 3 Health and safety Solar cookers — when used properly — safely and conveniently cook all types of food, including meats, grains, legumes, vegetables and fruits. As with any cooking method, however, care should be taken when solar cooking to maintain food safety, particularly with meats, legumes and grains. Cooking temperatures Safety concerns when using solar cookers for cooking and water pasteurization are summarized in the sections below
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