Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).
NIST Authors in Bold
|Author(s):||William V. Payne; Piotr A. Domanski; Seok Ho Yoon;|
|Title:||Residential Heat Pump Heating Performance with Single Faults Imposed|
|Published:||October 29, 2010|
|Abstract:||A heat pump equipped with a thermostatic expansion valve (TXV) was tested in environmental chambers during steady-state no-fault and imposed-fault operation. The studied system was an R410A split residential heat pump with an 8.8 kW nominal cooling capacity, Seasonal Energy Efficiency Ratio (SEER) of 13, and Heating Seasonal Performance Factor (HSPF) of 7.8. The imposed faults were compressor valve leakage, outdoor improper air flow, indoor improper air flow, liquid line restriction, refrigerant undercharge, and refrigerant overcharge. Evaporator fouling, condenser fouling, and refrigerant overcharge caused the greatest performance degradation. We observed substantial commonality between sensitive features in the heating and cooling modes; however, several different features were identified for the heating mode as more sensitive.|
|Citation:||Applied Thermal Engineering|
|Pages:||pp. 765 - 771|
|Keywords:||fault detection and diagnosis, heating mode, heat pump, thermostatic expansion valve|
|Research Areas:||Energy Efficiency, Building Energy Conservation, Sustainability Metrics and Tools, Building Equipment Efficiency|