부산대학교 도서관

The principal elements of the system serving 5000 sq ft of commercial office building space are a 750 sq ft water-type solar collector, one 7/sup 1///sub 2/-ton water-to-water heat pump, five small tonnage water-to-air heat pumps and three water storage tanks of 6000, 3000 and 2000 gal nominal capacity. One of the principal objectives of the project was to collect and evaluate detailed operating data for the building and its system over the winter heating seasons of 1974-75 and 1975-76. Consequently, elaborate instrumentation and data acquisition equipment were installed. Measurements include the outdoor weather conditions, indoor conditions, temperatures and water flow rates at each heat exchanger, electric power consumed by the six heat pumps and the water-circulating pumps, as well as temperature gradient measurements in three water storage tanks. Data from over 150 points are measured by an IBM System 7 data acquisition computer, summed or averaged over a six-minute basic cycle, stored, and transmitted periodically over telephone lines to The Pennsylvania State University where it is subjected to analysis programs.