What Btu of heat is required to raise 1 pound of ice 1 degree F when the temperature is below 32 degrees F?

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Study for the NOCTI Heating, Ventilation, and Air Conditioning (HVAC) Test. Practice with flashcards and multiple choice questions, each question offers hints and explanations. Get ready for your exam!

Multiple Choice

What Btu of heat is required to raise 1 pound of ice 1 degree F when the temperature is below 32 degrees F?

Explanation:
Heating ice uses its specific heat, which for ice is about 0.5 Btu per pound for every degree Fahrenheit. Since the temperature is below 32°F, the ice stays solid, so only sensible heat is added—there’s no melting. To raise 1 pound of ice by 1°F, you multiply the heat by the temperature change: 0.5 Btu/lb°F × 1°F = 0.5 Btu. So the required heat is 0.5 Btu.

Heating ice uses its specific heat, which for ice is about 0.5 Btu per pound for every degree Fahrenheit. Since the temperature is below 32°F, the ice stays solid, so only sensible heat is added—there’s no melting. To raise 1 pound of ice by 1°F, you multiply the heat by the temperature change: 0.5 Btu/lb°F × 1°F = 0.5 Btu. So the required heat is 0.5 Btu.

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