Comparison of Rating Water-Source Heat Pumps Using ARI Standard 320 and ISO Standard 132-56-1.

摘要

This investigation compares performance ratings obtained when testing water source heat pumps using the Air Conditioning and Refrigeration Institute (ARI) Standard 320 and the International Standards Organization (ISO) Standard 13256-1. Multiple tests were run using two heat pumps of different capacities from different manufacturers. These tests included a ducted 1.75 kW (0.5 ton) unit and a non-ducted 3.52 kW (1.0 ton) unit. Air external static pressure and water flow were varied at the ISO conditions to determine the correction in capacity and total power mandated by the ISO standard. The effects of this variability were measured and compared to test results using the ARI Standard 320 as the baseline test. ISO cooling capacity for the first and second units were 0.1% higher and 1.1% lower than the ARI capacity, respectively.