Webinar – Low-Load Efficiency Heat Pump Performance

NEEA Product Council

Low-Load Efficiency Heat Pump Performance

Details

This Product Council presents NEEA’s 2023-4 research investigating variable speed system performance at low-load conditions during mild weather conditions. Low-load efficiency is one of the no/low-cost market shifts we are pursuing at NEEA, which we believe can generate a 5% gain of fleet-wide performance. The truth is that not all variable speed heat pumps perform well when at low-load conditions. Most of this is because the heat pump control algorithms are designed for specific conditions. The good news is these control algorithms can be modified to generate COPs greater than 4.5 during mild weather conditions, which are the bulk of all operating hours. The bad news is that there are two issues that need to be addressed to ensure real world performance gains are achieved. The presentation will cover data, analysis and methods for ensuring low-load efficiency of variable speed heat pumps.

Presenters: Christopher Dymond (NEEA) and JJ Sawicki (TRC)