List (i) any three advantages and (ii) any three limitations of using a solar cooker
List (i) any three advantages and (ii) any three limitations of using a solar cooker
A solar cooker contains light reflectors which reflect sunlight and focus to a small area. The container on which the food is to be cooked is placed in focus of the reflector. The heat from the sun accumulate at the focus to rise the temperature of the container to a very high value which eventually cooks the food.
Advantages:
1-Solar cookers do not produce any smoke as a product of combustion.
2-Solar cookers attain temperatures of up to about 165 °C, so they can be used to sterilize water or prepare most foods that can be made in a conventional oven or stove, from baked bread to steamed vegetables to roasted meat.
3-There is no need of fuel in solar cookers.
Disadvantages:
1-Solar cookers are less useful in cloudy weather.
2-Many solar cookers take longer to cook food than would a fuel-based oven.
3-Some solar cooker designs are affected by strong winds, which can slow the cooking process, cool the food, and disturb
the reflector.
A solar cooker contains light reflectors which reflect sunlight and focus to a small area. The container on which the food is to be cooked is placed in focus of the reflector. The heat from the sun accumulate at the focus to rise the temperature of the container to a very high value which eventually cooks the food.
Advantages:
1-Solar cookers do not produce any smoke as a product of combustion.
2-Solar cookers attain temperatures of up to about 165 °C, so they can be used to sterilize water or prepare most foods that can be made in a conventional oven or stove, from baked bread to steamed vegetables to roasted meat.
3-There is no need of fuel in solar cookers.
Disadvantages:
1-Solar cookers are less useful in cloudy weather.
2-Many solar cookers take longer to cook food than would a fuel-based oven.
3-Some solar cooker designs are affected by strong winds, which can slow the cooking process, cool the food, and disturb
the reflector.
