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RSS FeedsEnergies, Vol. 12, Pages 545: Refrigerant Charge Fault Detection and Diagnosis Algorithm for Water-to-Water Heat Pump Unit (Energies)

 
 

10 february 2019 19:00:01

 
Energies, Vol. 12, Pages 545: Refrigerant Charge Fault Detection and Diagnosis Algorithm for Water-to-Water Heat Pump Unit (Energies)
 




Refrigerant charge faults have a great adverse effect on the performance of heat pumps and must therefore be detected and diagnosed early in real time. In this study, the effect of refrigerant charge faults on a water-to-water heat pump is experimentally investigated in cooling mode and heating mode at various outdoor entering water temperature conditions. The study showed that refrigerant undercharge affects the performance of water-to-water heat pump more in heating mode than in cooling mode. Results from the study are used to develop a refrigerant charge fault detection and diagnosis (FDD) algorithm that works using correlations and rule-based refrigerant fault characteristic charts. The FDD algorithm is able to detect refrigerant charge faults in the water-to-water heat pump within an error threshold of ±4.5% and ±1.1% in cooling mode and heating mode respectively.


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69 viewsCategory: Biophysics, Biotechnology, Physics
 
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