A ton of refrigeration represents the heat energy absorbed when a ton (2000 lbs) of ice melts during one ___ hour period.

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Multiple Choice

A ton of refrigeration represents the heat energy absorbed when a ton (2000 lbs) of ice melts during one ___ hour period.

Explanation:
Ton of refrigeration is a rate of cooling defined by the amount of heat needed to melt a ton of ice in a 24-hour period. The latent heat of fusion for ice is about 144 BTU per pound, so melting 2000 pounds requires 2000 × 144 = 288,000 BTU. If that heat is absorbed evenly over twenty-four hours, the rate is 288,000 ÷ 24 = 12,000 BTU per hour. That 12,000 BTU per hour is what we call one ton of refrigeration. So the period is twenty-four hours. If the time were different, the BTU per hour would scale accordingly (e.g., melting the same amount of ice in fewer hours would require a higher BTU/hr rate).

Ton of refrigeration is a rate of cooling defined by the amount of heat needed to melt a ton of ice in a 24-hour period. The latent heat of fusion for ice is about 144 BTU per pound, so melting 2000 pounds requires 2000 × 144 = 288,000 BTU. If that heat is absorbed evenly over twenty-four hours, the rate is 288,000 ÷ 24 = 12,000 BTU per hour. That 12,000 BTU per hour is what we call one ton of refrigeration. So the period is twenty-four hours. If the time were different, the BTU per hour would scale accordingly (e.g., melting the same amount of ice in fewer hours would require a higher BTU/hr rate).

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