Computer simulation of the long-term performance of a summer air conditioning system with a man -made sea sonal thermal energy store

ABSTRACT COMPUTER SIMULATION OF THE LONG-TERM PERFORMANCE OF A SUMMER AIR CONDITIONING SYSTEM WITH A MAN-MADE SEASONAL THERMAL ENERGY STORE YİLDİRİM, Murtaza M. S. In Mechanical Engineering Supervisor: Prof. Dr. Mazhar ÜNSAL February 1991, 97 Pages Modelling and computer simulation of the long-term performance of a summer air conditioning system with a man-made seasonal thermal energy store is the subject of this investigation. The performance of two different models as hot and cold time active systems were investigated for daily and seasonal storage. In both cases, winter air is the natural source for cooling. For hot time active system, the cold storage tank is cooled by low temperature atmospheric air via an air/water heat exchanger and the air conditioning system condenser is cooled fully or partially by the water in the cold storage tank during hot time when the air conditioning system is operational. In cold time active system, the air conditioning system is operational at cold time. The condenser is cooled by cold time atmospheric air. Water is cooled and stored during cold time.The water is then circulated between the tank and fan-coils. The purpose of this study is the estimation of the effect of systems components cm the coefficient of performance (COP) by an interactive computer program that is prepared in the Fortran 77 language. Results of these two models are compared with the results of a conventional system. Key words: thermal storage, energy storage, thermal energy store, cold storage, seasonal thermal energy store. ni