Answer Happy

Posted: **Fri Jul 01, 2022 6:51 am**

: Summer Conditions Supply Air 81 F Db 68 F Wb Return Air 75 F Db 63 F Wb Outdoor Air 95 F Db 78 F Wb Exhaust Air 89 F Db 1 (19.56 KiB) Viewed 48 times

An enthalpy wheel saves energy in the summer season by cooling air entering a building from the outside with the return air that is ventilated from a building. From the conditions shown in the diagram, how much is the air conditioning load reduced by the wheel if the outside air supply to the building is 5,000 cfm? The wheel is 98% effective in exchanging heat. [Answer: About 70 Tons of cooling.
SUMMER CONDITIONS SUPPLY AIR 81°F DB 68°F WB RETURN AIR 75°F DB 63°F WB OUTDOOR AIR 95°F DB 78°F WB EXHAUST AIR 89°F DB 73°F WB