Abstract
This article aims to improve the system cooling capacity of an adsorption chiller working with a silica gel/water pair by an allocation of the optimum cycle time at different operating conditions. A mathematical model was established and validated with the literature experimental data to predict the optimum cycle time for a wide range of hot (55°C–95°C), cooling (25°C–40°C), and chilled (10°C–22°C) water inlet temperatures. The optimum and conventional chiller performances are compared at different operating conditions. Enhancement ratio of the system cooling capacity was tripled as the cooling water inlet temperature increased from 25°C to 40°C at constant hot and chilled water inlet temperatures of 85°C and 14°C, respectively. Applying the concept of the optimum cycle time allocation, the system cooling capacity enhancement ratio can reach 15.6% at hot, cooling, and chilled water inlet temperatures of 95°C, 40°C, and 10°C, respectively.
Highlights
IntroductionMultitude of the industrial processes utilizes fossil fuel to supply heat and power.[1] the present stock of the fossil fuel is finite and will deplete in a few decades
Worldwide, multitude of the industrial processes utilizes fossil fuel to supply heat and power.[1]
The system operating temperatures were varied in a wide range of 55 °C–95 °C for hot water inlet temperature, 25 °C–40 °C for cooling water inlet temperature, and 10 °C–22 °C for chilled water inlet temperatures to obtain a correlation for the optimum cooling capacity as a function of the system
Summary
Multitude of the industrial processes utilizes fossil fuel to supply heat and power.[1] the present stock of the fossil fuel is finite and will deplete in a few decades. The emissions of the fossil fuel combustion process share a vast role in the environmental problems, such as global warming and air pollution. Reducing the dependence on such energy sources becomes important in refrigeration and air conditioning field, as it represents one of the most important energy-consumption industries.[2]. The conventional refrigeration system has another environmental problem, that is, its ozone depletion potential. Providing an alternative refrigeration technology to attenuate these effects will be valuable
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