Answer Happy

Posted: **Fri Jul 01, 2022 6:56 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 (19.8 KiB) Viewed 31 times

An enthalpy wheel saves energy in the summer season by coolingair entering a building from the outside with the return air thatis ventilated from a building. From the conditions shown in thediagram , how much is the air conditioning load reduced by thewheel if the outside air supply to the building is 5,000 cfm? Thewheel is 98% effective in exchanging heat. [Answer: About 70 Tonsof 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