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Numerical investigation on effects of sub-cooled & super-heating degree on performance of VRF system with simultaneous operation.

Number: 2423

Author(s) : OH B., KIM D., JEONG H., PARK Y., CHOI J., MIN B., CHOI G.

Summary

Recently, the simultaneous cooling and heating operation is applied to the heat pump system. The simultaneous operation is one of the prospective functions for the VRF system. Since there are few studies on the simultaneous operation of the VRF system, detail studies are needed to increase the efficiency of simultaneous operation. Numerical analysis was conducted to investigate the performance and its energy saving potential of the VRF system with simultaneous cooling and heating operation. And the simulation results were validated with the experimental ones. The VRF system was controlled by the set subcooling or superheating degree of indoor unit and outdoor unit. The energy consumption of the VRF system was affected by compressor rpm, fan speed, set point temperature and ambient temperature. And the performance of the VRF system was varied from the number of operating indoor units and the thermal load of indoor unit. The optimal point was observed according to the heat balance of indoor unit. In this system. Additionally, the performance of the VRF system was studied the effect of parameters for each thermal load of indoor unit.

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Pages: 9 p.

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  • Original title: Numerical investigation on effects of sub-cooled & super-heating degree on performance of VRF system with simultaneous operation.
  • Record ID : 30030720
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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