Hot Water Distribution System Model Enhancements

Technical Report · Thu Nov 01 00:00:00 EDT 2012

DOI:https://doi.org/10.2172/1059152· OSTI ID:1059152

Hoeschele, M; Weitzel, E

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 inanother 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%.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1059152
• Report Number(s): NREL/SR-5500-55203; DOE/GO-102012-3626; KNDJ-0-40340-00
• Resource Relation: Related Information: Work performed by Alliance for Residential Building Innovation (ARBI), Davis, California
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
arbi
hot water distribution systems
simulation models
validation
heat transfer modeling
residential
residential buildings
Alliance for Residential Building Innovation
Building America