Karafan Journal

Karafan Journal

An experimental investigation into the coupling of gamma-type Stirling engine to convert thermal energy to cooling energy in different laboratory conditions

Document Type : Original Article

Authors
Ezatollah Hassanzadeh 1
Mehdi Aliehyaei 2
Saeed Jafari Mehrabadi 3
Arash Mohammadi 4
Hossein Mazaheri 3
1 PhD, Department of Mechanical Engineering, Faculty of Shahid Beheshti, Alborz Branch,Technical and Vocational University (TVU), Alborz, Iran.
2 Associate Professor, Department of Mechanical Engineering, Pardis Branch, Islamic Azad University, Pardis, Iran.
3 Assistant Professor, Department of Chemical Engineering, Arak Branch, Islamic Azad University, Arak, Iran.
4 Assistant professor, Department of Mechanical Engineering, Faculty of Chemical Engineering, Shahid Rajaee University, Tehran, Iran.
10.48301/kssa.2021.128403
Abstract
The main aim of this research was to experimentally investigate the two coupled identical ST500 gamma-type Stirling engines and convert thermal energy to cooling energy. Using a new structure and two coupled Stirling engines at different temperatures and pressures and use of biomass fuel within the 4 -8 bar average pressure range of the first engine hot source, the 1-4 bar average pressure range of the second engine cold source, and Stirling hot engine temperature range of 480-580 ºC, the effective cooling is obtained in the cold engine. In doing tests, attempts were made to reach lower than 9 percent error results in different parts of engine, including insulation, fluid leakage, belt loosing, and measurement devices. According to the obtained results, a 8 bar increase in the average pressure range of the gas in the first engine hot source, a 1 bar reduction in the average pressure range of the gas in the second engine cold source, the increased temperature of the hot source up to 580 ºC, and the use of the light operating fluid such as helium will affect the generation of cooling up to -16ºC.
Keywords
Gamma Stirling
Couple
Cooling
Power supply
Biomass
Subjects
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Karafan Journal
Volume 17, Issue 4 - Serial Number 50
Technical and Engineering
Winter 2021
Pages 187-213

  • Receive Date 05 October 2020
  • Revise Date 01 November 2020
  • Accept Date 23 January 2021