This work presents an experimental investigation on the implementation of free piston Stirling system, which is an energy efficient cooling technique, for low temperature refrigeration applications. The system has compact size and reduced weight compared to recuperative refrigeration systems and uses Helium as refrigerant (environmentally friendly) unlike CFCs or HCFCs used in conventional vapor compression refrigeration system. In present work, an experimental test facility for the free piston Stirling cooling system has been designed and developed. The experiments were done for the cold head temperature of −40 °C to −70 °C, however the present test rig can reach upto −90 °C and from the experiments it has been found that as the cold head temperature decreases from −40 °C to −70 °C, the power consumption increases from 75.54 W to 83.17 W, while the refrigeration capacity decreases from 153.69 W to 12.69 W. As expected, the COP of the system decreases from 2.03 to 0.15 with reducing refrigeration temperature. Present result shows that implementing Stirling techniques-based cooling system can lead to enhanced energy efficiency and overall performance, contributing to the development of more sustainable cooling solutions.

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Design and Experimental Analysis of Free Piston Stirling Cooling System: An Environment Friendly Cooling Technique

  • Ehsas Srivastava,
  • Kavya Taneja,
  • Vaibhav Jain,
  • Kanchan Mudgil

摘要

This work presents an experimental investigation on the implementation of free piston Stirling system, which is an energy efficient cooling technique, for low temperature refrigeration applications. The system has compact size and reduced weight compared to recuperative refrigeration systems and uses Helium as refrigerant (environmentally friendly) unlike CFCs or HCFCs used in conventional vapor compression refrigeration system. In present work, an experimental test facility for the free piston Stirling cooling system has been designed and developed. The experiments were done for the cold head temperature of −40 °C to −70 °C, however the present test rig can reach upto −90 °C and from the experiments it has been found that as the cold head temperature decreases from −40 °C to −70 °C, the power consumption increases from 75.54 W to 83.17 W, while the refrigeration capacity decreases from 153.69 W to 12.69 W. As expected, the COP of the system decreases from 2.03 to 0.15 with reducing refrigeration temperature. Present result shows that implementing Stirling techniques-based cooling system can lead to enhanced energy efficiency and overall performance, contributing to the development of more sustainable cooling solutions.