A Self-Pumping Vapor System for Hybrid Space Heating

Abstract

This paper reports investigations of a passive system tht t!"ansportsheat fran a solar collector dounua~. Refrigerant is evaporated in a collector and the vapor transports heat to one or more coMensers locttad at qn arbitrary elevation below the collector. The vapor pressure Ii'?ts the condansad liquld to an accwlator locatxd near the top of the colleccor. The results of annual performance calculations are presented for q space heating application in uhlch one or wre condensers are located within passive thermal storage units that release heat directly to one or more zomes of the building. Simple sizing rules foroptin!al

Experimental Study of a Self-Pumping Boiling Collector Solar Hot Water System

“…This design solves the problems experienced with the earlier single accumulator system . The first tests of this design were conducted indoors with an electrically heated evaporator located approximately 5 m above the condenser (13,14]. Late.r tests were conducted with a single solar panel under conditions more realistic of residential architectures where solar collectors are typically mounted on the roof.…”