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2015•Journal of Chaohu CollegeRequires access

ON THE PERFORMANCE ANALYSIS OF A NEW ABSORPTION REFRIGERATION CYCLE SYSTEM FOR SOLAR ENERGY

Lei Liu

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Abstract

On the basis of the traditional two-level lithium bromide absorption refrigeration cycle, considering that the heat can be increased by the temperature difference, this paper proposes a new absorption refrigeration cycle driven by solar energy to analyze and calculate the influence of the system thermal coefficient COP as well as available temperature difference made by the heat source under the low-voltage generator pressure(intermediate pressure) and intermediate solution concentration change. The results show that, within the scope of the occurrence of the heat source temperature of 85 ℃-95 ℃, the intermediate pressure between 1.6KPa(12mm Hg) and 2.2KPa(16.5mm Hg) can obtain the new value which has a higher thermodynamic cycle coefficient and the temperature difference of a larger heat source.

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What this paper is about

On the basis of the traditional two-level lithium bromide absorption refrigeration cycle, considering that the heat can be increased by the temperature difference, this paper proposes a new absorption refrigeration cycle driven by solar energy to analyze and calculate the influence of the system thermal coefficient COP as well as available temperature difference made by the heat source under the low-voltage generator pressure(intermediate pressure) and intermediate solution concentration change. The results show that, within the scope of the occurrence of the heat source temperature of 85 ℃-95 ℃, the intermediate pressure between 1.6KPa(12mm Hg) and 2.2KPa(16.5mm Hg) can obtain the new value which has a higher thermodynamic cycle coefficient and the temperature difference of a larger heat source.

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Available abstract

On the basis of the traditional two-level lithium bromide absorption refrigeration cycle, considering that the heat can be increased by the temperature difference, this paper proposes a new absorption refrigeration cycle driven by solar energy to analyze and calculate the influence of the system thermal coefficient COP as well as available temperature difference made by the heat source under the low-voltage generator pressure(intermediate pressure) and intermediate solution concentration change. The results show that, within the scope of the occurrence of the heat source temperature of 85 ℃-95 ℃, the intermediate pressure between 1.6KPa(12mm Hg) and 2.2KPa(16.5mm Hg) can obtain the new value which has a higher thermodynamic cycle coefficient and the temperature difference of a larger heat source.

Key concepts: Coefficient of performance, Absorption refrigerator, Lithium bromide, Refrigeration, Thermodynamics, Solar energy, Thermodynamic cycle, Heat pump and refrigeration cycle

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