In North America and many countries, the unit for heat in used today is still British Thermal Unit or Btu.
Btu stands for British unit and is defined as the amount of heat needed to increase the temperature of 1 pound of water by °F. Btu is required to increase the temperature of 1 pound of water from 63 °F to 64 °F.
In SI, the equivalent is 4.187 kJ is required to increase the temperature of 1 kg of water from 17 °C to °C..
Example 1 Find the amount of heat needed to increase the temperature of 50 lb of water from °F to °F..
Example 2 Find the amount of heat needed to increase the temperature of 2kg of water from °C to °C..
Ton of unit has been used for time and it represents the heat that is absorbed when ton or 2,000lb of ice melts in 24 hours.
The more used unit to rate HVAC equipment is Btu hr. ton of refrigeration effect = 24 hours = Btu hr = Btu hr = 12,000 Btu hr.
Alora Bopray is digital content producer for the home warranty, HVAC, and plumbing categories at Today's Homeowner.
Alora wrote as writer for dozens of home improvement clients and informed homeowners about the industry as writer for EcoWatch.
alumna of University of Pennsylvania, Roxanne is now Oklahoma, DIY enthusiast, and the proud parent of playful pug...
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