Effect of Data Availability on Modeling of Residential Air Conditioners and Heat Pumps for Energy Calculations

摘要

A component-based model for residential air conditioner and heat pump energy calculations has been developed through ASHRAE Research Project 1197. A primary objective of this project was to develop a suitable model that requires only readily available, or potentially readily available, input data. The component model meets this objective by only requiring rating data that are generated from ARI Standard 210/240. Unfortunately, only a small percentage of the data collected during these tests is published by ARI. Some manufacturers release a more significant portion of the test data in their technical literature, but these data are often incomplete. This paper describes the development of default data for the modeling of residential air conditioners and heat pumps using a test suite of 25 units. The paper evaluates the impact of limited data availability, and the need to use default data, on model prediction accuracy. The results show that the use of minimal data often produces acceptable results, though accuracy improves significantly with additional rating data. Of most importance are the power at standard rating conditions, the type of compressor, and the coil airflow rates. The results also show that accurate results are obtained without knowing the exact compressor model number.