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Modeling and validation of the effects of soft faults on the operation of an air source heat pump in cooling mode.

Number: 47

Author(s) : LLOPIS-MENGUAL B., NAVARRO-PERIS E., CORBERÁN J. M.

Summary

Some faults in heat pumps cannot be easily detected and diagnosed, as the system appears to function correctly, but it is working with lower efficiency. These soft faults occur either due to faults during installation or slowly over time, letting the heat pump operate without maintenance. It is relevant to acquire data from heat pumps operating with soft faults to develop techniques for detecting and diagnosing these faults. As this is a difficult task, we have modeled an air source heat pump in cooling mode, and performed simulations under different conditions of faults such as inadequate refrigerant charge, evaporator fouling, and compressor valve leakage. We validate them with available data from experimental tests fault-free and tests in which these faults have been imposed. Based on the model, we calculate the effects of soft faults when they appear at different levels and their impact on the Seasonal Energy Efficiency Ratio (SEER).

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Pages: 7

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Details

  • Original title: Modeling and validation of the effects of soft faults on the operation of an air source heat pump in cooling mode.
  • Record ID : 30030350
  • Languages: English
  • Source: XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2022.
  • Publication date: 2022/04

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