Project Report

Verification Test of ASHRAE Standard 152P

Prepared for: ASHRAE Transactions, 1998, V. 104, Pt. 1
Report dated: February 9, 1998
Prepared by Proctor Engineering Group
Contributor: John Proctor

Abstract

A verification test of Standard 152P "Standard Method of Test for Estimating the Efficiencies of Residential Thermal Distribution Systems" was performed by modifying an air conditioner duct system to achieve measured, but variable, duct leakage. Computer controlled dampers provided cycles of low leakage, supply leak only, return leak only, and both. This was repeated on a 12 day cycle.

house was extensively instrumented and comprehensive short term tests were run of the air conditioner, the thermal distribution system, and the home.

Standard 152P was used to predict performance under the measured conditions and compared to the measured changes. With the supply leak damper open, 152P predicted that the air conditioner would have to deliver 18% more cooling at design to maintain occupant comfort. The field data was consistent with that estimate. Return leakage effects however were measured at double the 152P estimates.

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