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Experimental investigation of the thermoelectric subcooler devoted to low-charge heat pump systems.

Number: 1169

Author(s) : ÖZYILDIZ T., HAIDA M., SMOLKA J., SÁNCHEZ D., FINGAS R., BODYS J., BAJCER M., SICCO E., ARANGUREN P.

Summary

To meet sustainability targets, the refrigeration and heat pump sector is switching to low Global Warming Potential (GWP) working fluids. As a result, novel solutions need to be developed. Thermoelectric subcooling is a state-of-the-art technique that can be implemented into vapour compression systems to improve their coefficient of performance (COP). Nevertheless, the optimum operation of thermoelectric modules (TEMs) is challenging, especially at high temperatures. Thus, the main aim of this paper is to analyse the response of
the TEMs and the heat-transfer performance of the proposed thermoelectric subcooler (TESC) while it operates in a low-charge propane system. The TESC was integrated downstream of the condenser in an 8.0 kW propane heat-pump test rig. Experiments were carried out with propane temperatures from 40 °C to 50 °C, an auxiliary-water-stream temperature 10 °C lower than the propane, and thermoelectric-module voltages up to 5.0 V DC. The results showed that the temperature difference between the TEM surfaces
increased to 19 °C and that the TESC’s thermal performance reached maximum at 5.0 V DC.

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Pages: 10 p.

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Details

  • Original title: Experimental investigation of the thermoelectric subcooler devoted to low-charge heat pump systems.
  • Record ID : 30034202
  • Languages: English
  • Subject: Technology
  • Source: 1st IIR International Conference on Refrigeration Adapting to Rising Temperatures
  • Publication date: 2025/08
  • DOI: http://dx.doi.org/10.18462/iir.adaptation.2024.1169

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