Study on two effect lithium bromide-water solar absorption cooling system

Document Type : Review Article

Authors

1 MS student, Department of Mechanical Engineering, Imam Khomeini International University, Qazvin, Iran

2 Assistant professor, Department of Mechanical Engineering, Imam Khomeini International University, Qazvin, Iran * Postal Code: 34148 - 96818 Qazvin, Iran.

3 Assistant professor, Department of Mechanical Engineering, Imam Khomeini International University, Qazvin, Iran

Abstract

Due to energy crisis and shortage of fossil fuels and emissions from those that have arisen serious concerns in relation to environmental issues, the use of renewable energy, especially solar energy has many attentions. A significant part of energy used in buildings is consumed by air conditioning systems. According to temperature of the generator, renewable and solar energy can be used as thermal driver in absorption refrigeration systems. In this study, two effects lithium bromide-water solar absorption cooling systems is simulated to be used in Tehran in summer. It is shown that coefficient of performance is increased by increasing temperature of high pressure generator until 130°C significantly and after that remain approximately constant. Since the high temperature generator has high energy consumption, temperature of 130 °C is recommended for high pressure generator. Collectors used in this system are fixed axis parabolic ones. Because the average heat absorbed by the collector varies each month, parallel arrangement are used. Required collector area is determined due to needed solar energy. For 20 kW cooling capacity, 52.5 m2 collector area is required with a 4 m3 storage tank.

Keywords

References

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Journal of Renewable and New Energy
Volume 2, Issue 2 - Serial Number 4
September 2015
Pages 55-62

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History

  • Receive Date: 01 August 2017
  • Accept Date: 01 August 2017

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