2007-02-27 12:55:52 · 3 answers · asked by ocsicnarf2 1 in Science & Mathematics ➔ Engineering
Actually, the refrigeration term "ton" comes from the day when most refrigeration units were large factories that made ice that was delivered to homes and businesses to keep "ice boxes" cool.
A "ton of refrigeration" is defined as the cooling power of one short ton (2000 pounds or 907 kilograms) of ice melting in a 24-hour period. This is equal to 12,000 BTU per hour, or 3517 watts [3]. Single-family residential "central air" systems are usually from 2 to 5 tons (24 to 60 kBTU, 7 to 18 kW) in capacity.
So a ton of refrigeration is the theoretical amount of energy needed to freeze a ton of water (already cooled to 32 F) in 24 hours.
2007-02-27 14:02:07 · answer #1 · answered by enginerd 6 · 2⤊ 0⤋
It means the unit has the theoretical capability of cooling 3 ton of water by 1 degree F in 10 minutes.
2007-02-27 21:01:01 · answer #2 · answered by Vincent G 7 · 0⤊ 0⤋
A three ton ac unit in a 2000 square foot house is really high electric bills. esp in Oklahoma in August.
2007-02-27 23:58:23 · answer #3 · answered by JamesD 3 · 0⤊ 0⤋