quiz lesson 9

By the occupants and appliances in the

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Unformatted text preview: during hea3ng season and heat entering the house during cooling season. Thus, insula3on reduces both hea3ng and cooling costs. In the compressor of an air condi3oner, pressure Correct A ) Increases Pressure increases in the compressor of an air condi3oner Air is saturated when Correct A ) It contains maximum amount of moisture possible at that temperature Air is saturated when it contains maximum amount of moisture possible at that temperature Air is saturated when Correct A ) Its rela3ve humidity is 100% Air is saturated when its rela3ve humidity is 100% When air is cooled below due point, moisture in the air Correct A ) condenses When air is cooled below due point, moisture in the air condenses When warm outside air is cooled by an air condi3oner, its rela3ve humidity Correct A ) increases When warm outside air is cooled by an air condi3oner, its rela3ve humidity Keeping the filter clean can lower your air condi3oner's energy consump3on Correct A ) T RUE Keeping the filter clean can lower your air condi3oner's energy consump3on In general, air condi3oners are rated in tons. A ton of refrigera3on transfers Correct B ) 12,000 BTUs/h A ton of refrigera3on transfers 12,000 BTUs/hr When is air saturated? Correct A ) When it contains the maximum amount of moisture it can hold at that temperature Air is saturated when it contains the maximum amount of moisture it can hold at that temperature Keep the draperies and shades on your windows closed during the day to cut down energy costs during Correct B ) summer months Keep the draperies and shades on your windows closed during the day to cut down energy costs during summer months In of an air condi3oner, temperature Correct A ) Increases In the compressor of an air condi3oner, temperature increases Floor insula3on has li\le or no effect on Correct A ) Cooling Floor insula3on has li\le or no effect on cooling Calculate the percent rela3ve humidity of air when the air contains 0.001 lb of moisture per pound of dry air while the maximum air it can hold at that temperature is 0.007 lb per lb of dry air. Correct B ) 14.29% Rela3ve humidity = 0.001/0.007 = 0.1429 x 100= 14.29% If the owner replaces his old 2 ton air condi3oner...
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