how much refrigeration (measured in tons) is requird to control the fermentation of 1 ton of red grapes?
The unit ton is used in refrigeration and air conditioning to measure heat absorption. Prior to the introduction of mechanical refrigeration, cooling was accomplished by delivering ice. Installing one ton of refrigeration replaced the daily delivery of one ton of ice. * In North America, a standard ton of refrigeration is 12,000 BTU/h (3517 W). This is approximately the power required to melt one short ton (2000 lb) of ice at 0 °C in 24 hours, thus representing the delivery of 1 ton of ice per day. * A less common usage is the power required to cool 1 long ton of water by 1 °F every 10 minutes = 13,440 BTU/h ≈ 3939 W.[10][11][12] The refrigeration ton is commonly abbreviated as TR. Sources: http://en.wikipedia.
HVAC (pronounced either “H-V-A-C” or “aitch-vak”) is an acronym that stands for the closely related functions of “Heating, Ventilating, and Air Conditioning”- the technology of indoor environmental comfort. HVAC system design is a major subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field’s abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is particularly important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and healthy building conditions are regulated with temperature and humidity, as well as “fresh air” from outdoors. Contents [hide] * 1 Background * 2 History * 3 Heating * 4 Ventilating o 4.1 Mechanical or forced ventilation o 4.2 Natural ventilation * 5 Air conditioning * 6 Energy efficiency
