Analysis on the Co-efficient of Performance of a Hybrid Energy Source System with Thermal Storage

Abstract

The purpose of this study is to understand the co-efficient of performance (COP) on the partial load of energy source equipments by the result of measurements of a middle scale office building with thermal storage tank. The result of air-conditioning load measurements indicates that the operating time at the partical load is very long. In order to reduce the energy consumption and running cost of the air-conditioning energy source systems, their systems should be selected with the hi-performance equipment not only on the peak load, but also on the partial load. This paper reports the measurement data of the COP of air source heat pump chiller-heater and gas fired absorption chiller-heater, and analyzed the relation with COP and effecting factors. This paper shows the formula of COP for the simulation, and confirms the correctness of this formula. And also this paper reports the heat loss ratio of thermal storage tank in a year.