Packaged Residential Active-Solar Space-Conditioning System. Appendix D. Trident Drainback and Domestic Hot Water System Using Nontracking Focusing Collectors. Final Subcontract Report

摘要

This report documents Trident's final design for a space heating and domestic hot water (DHW) drainback system with a modular membrane-lined storage tank, non-tracking focusing collectors, and a microprocessor control system. The storage tank was a ''knock-down design'' that was shipped flat and assembled in less than one hour. The collectors were manufactured by SERAC LTD. of England and had dual polymeric glazing with nonimaging concentrators. The system was installed on two houses in Westminister, Colorado. Performance data were collected at one of the sites for one year. The Trident system experienced more operating problems than the others during the monitoring period. The system efficiency averaged 17% and the collector operating efficiency averaged 25% throughout the monitoring period. (ERA citation 11:004074)