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repeat prob 14-83e for a total pressure of 144 psia for airprob 14-83eair enters a 1-ft-diameter cooling section at 147
reconsider prob 14-46 determine the required properties using ees or other software instead of the psychrometric chart
in some climates cleaning the ice off the windshield of a car is a common chore on winter mornings explain how ice
in a movie theater in winter 500 people each generating sensible heat at a rate of 70 w are watching a movie the heat
an average person produces 025 kg of moisture while taking a shower and 005 kg while bathing in a tub consider a family
a cooling tower with a cooling capacity of 100 tons 440 kw is claimed to evaporate 15800 kg of water per day is this a
the us department of energy estimates that 190000 barrels of oil would be saved per day if every household in the
the thermostat setting of a house can be lowered by 2degf by wearing a light long-sleeved sweater or by 4degf by
an un-insulated tank having a volume of 05 m3 contains air at 35degc 130 kpa and 20 percent relative humidity the tank
atmospheric air enters an air-conditioning system at 30degc and 70 percent relative humidity with a volume flow rate of
a natural-draft cooling tower is to remove 50 mw of waste heat from the cooling water that enters the tower at 42degc
air enters a cooling section at 97 kpa 35degc and 30 percent relative humidity at a rate of 6m3min where it is cooled
the air-conditioning costs of a house can be reduced by up to 10 percent by installing the outdoor unit the condenser
determine the masses of dry air and the water vapor contained in a 240-m3 room at 98 kpa 23degc and 50 percent relative
the air in a room has a dry-bulb temperature of 80degf and a wet-bulb temperature of 65degf assuming a pressure of 147
in summer the outer surface of a glass filled with iced water frequently sweats how can you explain this
write an essay on air- water- and soil-based heat pumps discuss the advantages and the disadvantages of each system for
design a thermoelectric refrigerator that is capable of cooling a canned drink in a car the refrigerator is to be
in the 1800s before the development of modern air-conditioning it was proposed to cool air for buildings with the
solar or photovoltaic pv cells convert sunlight to electricity and are commonly used to power calculators satellites
how will a the specific humidity and b the relative humidity of the air contained in a well-sealed room change as it is
answer the question in detailwhat is the difference between the specific humidity and the relative
it is proposed to use a solar-powered thermoelectric system installed on the roof to cool residential buildings the
a refrigerator operates on the ideal vapor compression refrigeration cycle with r-134a as the working fluid between the
rooms with floor areas of up to 15-m2 are cooled adequately by window air conditioners whose cooling capacity is 5000