Presentation No 506 – Experimental Investigation Into The Effect of Charge Optimization And Standard Test Conditions On The Seasonal Performance In An R410A Heat Pump With Dedicated Subcooler – 14th IEA Heat Pump Conference, Chicago, USA
There is an increased focus on the amount of refrigerant charge used in the HVAC&R systems due to the new restrictions and ongoing phase down of high GWP refrigerants as part of the F-gas regulation. In the current study, seasonal performance for a variable speed compressor in an R410A water ethylene glycol (WEG) heat pump system having a nominal heating capacity of 9 kW is estimated according to EU 14825. This study experimentally studied the effect of charge and the fixed/variable outlet condition on the seasonal performance of the water heat pump equipped with a variable speed compressor. The results of a charge optimization done at part load conditions show an un