Hot Water Distribution System Model Enhancements

Hoeschele, M. ; Weitzel, E.

National Renewable Energy Laboratory (U.S.)

关键词: Buildings;    Simulation Models;    Alliance For Residential Building Innovation;    Heat Transfer Modeling;    Residential;   

DOI  :  10.2172/1059152
RP-ID  :  DOE/GO-102012-3626
RP-ID  :  AC36-08GO28308
RP-ID  :  1059152

美国|英语

来源: UNT Digital Library

【 摘 要 】

This project involves enhancement of the HWSIM distribution system model to more accurately model pipe heat transfer. Recent laboratory testing efforts have indicated that the modeling of radiant heat transfer effects is needed to accurately characterize piping heat loss. An analytical methodology for integrating radiant heat transfer was implemented with HWSIM. Laboratory test data collected in another project was then used to validate the model for a variety of uninsulated and insulated pipe cases (copper, PEX, and CPVC). Results appear favorable, with typical deviations from lab results less than 8%.