Exergy and exergeconomic analysis of solar assisted heat pump system

In this thesis, exergy and exergeconomic analysis of a solar assisted heat pump (SAHP) system are studied. This system was installed in Energy Labaratory of Mechanical Engineering Department, University of Gaziantep. The SAHP system consists of a heat pump, flat plate solar collectors, energy storage tank, and a room heated. Data for all nodal points of the heating system were collected. Water-glycol solution was circulated through the cycle between the collectors and the storage tank, cycles between heat pump and the storage tank and room. The R22 was circulted in the heat pump cycle. A program in Engineering Equation Solver (EES) was prepared. Thermal and physical properties of refrigerants R744 and R34a were used in the EES program to compare results with those of R22 results. Exery and exergeconomic values are calculated by using the measurement data. The cost functions are obtained using Specific Exergy Costing method. The R134a used in the heat pump system gives the better results because of high exergy efficieny, low exergy destruction and COP. Thermoeconomic factors are low for high cost rate of exergy destruction of heating system. The Capital Investment and, Operation &Maintance and total cost of the SAHP heating system are computed as 1.451 €/kWh. The relative cost difference and exergoeconomic factor value are high for R134a that cause low exergy destrcution. It is well evaluation for cost destruction of exergy rate, relative cost difference and exergocenomic factor that R134a refrigerant has good performance and thermoeconomic values for exergy anlysis.