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One ton refrigeration corresponds to
- a)50 kcal/min
- b)50 kcal/kr
- c)80 kcal/day
- d)80 kcal/hr
- e)1000 kcal/day
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
One ton refrigeration corresponds toa)50 kcal/minb)50 kcal/krc)80 kcal...
One ton refrigeration corresponds to 50 kcal/min.
Explanation:
Refrigeration is the process of removing heat from a substance or space to lower its temperature. It is measured in units of refrigeration, commonly known as tons of refrigeration.
- One ton refrigeration is defined as the amount of heat required to melt one ton (2000 pounds) of ice at 32°F (0°C) in 24 hours. It is equivalent to 12,000 British thermal units (BTU) per hour or 211 kilocalories per minute.
- To convert it to kilocalories per minute, we divide 12,000 BTU/hr by 60 minutes per hour. This gives us 200 BTU/min.
- To convert BTU to kilocalories, we use the conversion factor 1 BTU = 0.252 kcal. Therefore, 200 BTU/min is equal to 200 * 0.252 = 50.4 kcal/min.
- However, since the options provided do not include decimal values, we round down to the nearest whole number. Hence, one ton refrigeration corresponds to 50 kcal/min.
- Option A, which states that one ton refrigeration corresponds to 50 kcal/min, is the correct answer.
In summary, one ton refrigeration is a measure of cooling capacity, and it corresponds to 50 kcal/min, which represents the amount of heat that can be removed per minute to achieve a cooling effect equivalent to melting one ton of ice in 24 hours.
Explanation:
Refrigeration is the process of removing heat from a substance or space to lower its temperature. It is measured in units of refrigeration, commonly known as tons of refrigeration.
- One ton refrigeration is defined as the amount of heat required to melt one ton (2000 pounds) of ice at 32°F (0°C) in 24 hours. It is equivalent to 12,000 British thermal units (BTU) per hour or 211 kilocalories per minute.
- To convert it to kilocalories per minute, we divide 12,000 BTU/hr by 60 minutes per hour. This gives us 200 BTU/min.
- To convert BTU to kilocalories, we use the conversion factor 1 BTU = 0.252 kcal. Therefore, 200 BTU/min is equal to 200 * 0.252 = 50.4 kcal/min.
- However, since the options provided do not include decimal values, we round down to the nearest whole number. Hence, one ton refrigeration corresponds to 50 kcal/min.
- Option A, which states that one ton refrigeration corresponds to 50 kcal/min, is the correct answer.
In summary, one ton refrigeration is a measure of cooling capacity, and it corresponds to 50 kcal/min, which represents the amount of heat that can be removed per minute to achieve a cooling effect equivalent to melting one ton of ice in 24 hours.
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