THERMOECONOMIC ANALYSIS OF A WATER TO WATER HEAT PUMP UNDER DIFFERENT CONDENSER AND EVAPORATOR CONDITIONS

Water Salinity Under Heat Stress in Grazing Conditions

طراحی‌، ساخت و تحلیل یک پمپ حرارتی زمین گرمایی

Due to the necessity to achievement of heat pump manufacturing technology as an important step in the development of geothermal systems, a heat pump is designed, manufactured and analyzed in different operating conditions. The heat pump is water to water type which is extensively used for heating buildings in winter. A sample of a heat pump from a famous manufacturer is selected to dissemble an...

Optimization of the PCM-integrated solar domestic hot water system under different thermal stratification conditions

Many researchers have investigated how to increase the overall efficiency of solar-driven thermal systems. Several key parameters, such as collector efficiency and storage tank characteristics, may impose some constraints on the annual solar fraction (ASF) of such systems. In this paper, the behaviour of integrating the phase change material (PCM) in SDHW systems is modelled and optimized n...

Optimization of the PCM-integrated solar domestic hot water system under different thermal stratification conditions

Many researchers have investigated how to increase the overall efficiency of solar-driven thermal systems. Several key parameters, such as collector efficiency and storage tank characteristics, may impose some constraints on the annual solar fraction (ASF) of such systems. In this paper, the behaviour of integrating the phase change material (PCM) in SDHW systems is modelled and optimized n...

Heat and Mass Transfer Coefficients Under Frost Conditions In A Finned-Tube Evaporator

The objectives of this study are to provide experimental data and a correlation that can be used in the optimal design of an evaporator under frost conditions. In the present study, we tested both a single stage and a two-stage evaporator with a variation of operating parameters and fin geometry under frost conditions. The effects of tube space and fin alignment on the heat transfer performance...