RE: Change In Enthalpy


I read in an article that 6.66 change in enthalpy is about 400 cfm. What causes a really high and really low enthalpy reading?

csp02 Rookie Asked on April 13, 2018 in Residential HVAC.
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This enthalpy change number is based on airflow being correct, the charge being correct, and everything clean and in good working order. It’s a great way to see if a system is working correctly.
Low enthalpy change generally means that there is not enough refrigerant flowing through the coil to meet design temps.
Conversely, a high enthalpy change pretty much always means low airflow.

Apprentice Answered on June 1, 2018.
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