Heat Pump Water Heater Ducting Strategies with Encapsulated Attics in Climate Zones 2 and 4

M. L. Sweet  Francisco, A.¹  Roberts, S. G.¹ 

[1] Southface Energy Inst., Atlanta, GA (United States)

关键词: residential;    Residential Buildings;    PHI;    Building America;    heat pump water heater;    HPWH;    ducted;    enclosed attic;    conditioned attic;    sealed attic;    water heating;    energy efficiency;    high performance;   

DOI  :  10.2172/1255640
RP-ID  :  DOE/GO--102016-4753
PID  :  OSTI ID: 1255640
Others  :  Other: 7405

学科分类：能源（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The focus of this study is on the performance of HPWHs with several different duct configurations and their effects on whole building heating, cooling, and moisture loads. A.O. Smith 60 gallon Voltex (PHPT-60) heat pump water heaters (HPWHs) were included at two project sites and ducted to or located within spray foamed encapsulated attics. The effect of ducting a HPWH's air stream does not diminish its efficiency if the ducting does not reduce intake air temperature, which expands HPWH application to confined areas.