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Cook stove : ウィキペディア英語版
Cook stove

In cooking, a cook stove is heated by burning wood, charcoal, animal dung or crop residue. Cook stoves are commonly used for cooking and heating food in developing countries.
Developing countries consume significantly less energy than developed nations; however, over 50% of the energy is for cooking food. The average rural family spends 20% or more of its income purchasing wood or charcoal for cooking. The urban poor also frequently spend a significant portion of their income on the purchase of wood or charcoal.
Cooking over an open fire can cause increased health problems brought on from the smoke, particularly lung and eye ailments, but also birth defects. Replacing the traditional 3-rock cook stove with an improved one and venting the smoke out of the house through a chimney can significantly improve a family’s health.
Deforestation and erosion often the result from harvesting wood for cooking fuel. The main goal of most improved cooking stoves is to reduce the pressure placed on local forests by reducing the amount of wood the stoves consume.
== Three-stone cooking fire ==

The traditional method of cooking is on a three-stone cooking fire. It is the cheapest stove to produce, requiring only three suitable stones of the same height on which a cooking pot can be balanced over a fire. However, this cooking method also has problems:
* Smoke is vented into the home, instead of outdoors, causing health problems. According to the World Health Organization, "4.3 million people a year die prematurely from illness attributable to the household air pollution caused by the inefficient use of solid fuels (2012 data)."〔(Indoor air pollution and health ) - World Health Organization fact sheet.〕
* Fuel is wasted, as heat is allowed to escape into the open air. This requires the user to gather more fuel and may result in increased deforestation if wood is used for fuel.
* Only one cooking pot can be used at a time.
* The use of an open fire creates a risk of burns and scalds.〔(【引用サイトリンク】title= Health Benefits )〕 Particularly when the stove is used indoors, cramped conditions make adults and particularly children susceptible to falling or stepping into the fire and receiving burns. Additionally, accidental spills of boiling water may result in scalding, and blowing on the fire to supply oxygen may discharge burning embers and cause eye injuries.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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