Solar-energy-system performance evaluation: Dallas Recreation Center, Dallas, Texas. March-November 1980

Abstract

Use of solar energy to heat and cool the health care clinic, the gameroom, and the lobby at the Dallas Recreation Center is described. The active solar energy system is designed to provide 80% of the heating load, 90% of the hot water requirements, and 48% of the cooling load. The system utilizes 4258 square feet of liquid flat-plate collectors; 6000 gallons of hot storage and 2000 gallons of cold storage; and a natural gas hydronic system for auxiliary space heating, natural gas domestic hot water heater, and cooling auxiliary from direct expansion electric air conditioning units. Data are compiled on the energy saved and the coefficient of performance from March until November of 1980. The solar system operated below expectations during the testing period, but it supplied 34% of the building energy demand. Total operating energy during the test period is noted and weather conditions are summarized. (MCW)