To obtain a copy of a specific publication, users should contact the publication's publisher directly.
Abstract
Many conventional low slope roofs have significant failure rates and, with summer daytime sifurace temperatures warmer than indoors, contribute to building cooling loads. The water ballasted protected membrane roof system, developed under the California Energy Commissions Energy Technologies Advancement Program (ETAP) provides complete membrane protection from the outdoor environment and can satisfy more than 50% of typical building cooling loads in dry climates. This paper summarizes a WBMPR economic projections for large "new construction" nonresidential applications. An hourly energy performance simulation program was calibrated using monitoriong results from a 6500 sq ft demonstration project. The simulation and detailed cost estimates were used to evaluate system economics for four building tpes in six California locations. Results indicate rapid paybacks for WBPMR applications in California buildings with significant cooling lods. When extended roof life, electric demand savings, and fire protection value are considered, projected payacks are immeidate for some building types.
Many conventional low slope roofs have significant failure rates and, with summer daytime sifurace temperatures warmer than indoors, contribute to building cooling loads. The water ballasted protected membrane roof system, developed under the California Energy Commissions Energy Technologies Advancement Program (ETAP) provides complete membrane protection from the outdoor environment and can satisfy more than 50% of typical building cooling loads in dry climates. This paper summarizes a WBMPR economic projections for large "new construction" nonresidential applications. An hourly energy performance simulation program was calibrated using monitoriong results from a 6500 sq ft demonstration project. The simulation and detailed cost estimates were used to evaluate system economics for four building tpes in six California locations. Results indicate rapid paybacks for WBPMR applications in California buildings with significant cooling lods. When extended roof life, electric demand savings, and fire protection value are considered, projected payacks are immeidate for some building types.
Date
12/1992
12/1992
Author(s)
R Bourne; L Rainer
R Bourne; L Rainer
Page(s)
445-453
445-453
Keyword(s)
water ballast; energy; heating load; protected membrane roof;
water ballast; energy; heating load; protected membrane roof;