Paper Conference

Proceedings of eSim 2004: 3th Conference of IBPSA-Canada

     

APPLICATION OF THE IEA HVAC BESTEST SUITE OF TEST CASES FOR THE VALIDATION OF AN AIR-CONDITIONING MODEL

Kamel Haddad

Abstract: The empirical model for split airconditioning system with an air-cooled condensing unit, implemented in the ESP-r/HOT3000 simulation engine, accounts for the variation of the equipment part-load factor with the part-load ratio. The model also accounts for the variations of the steady-state capacity and coefficient of performance with outdoor dry-bulb temperature and indoor wet-bulb temperature. Major inputs to the model are the cooling capacity, coefficient of performance, and coil sensible heat ratio at rating conditions. The model and its implementation in ESP-r/HOT3000 are validated using the International Energy Agency suite of test cases (HVAC BESTEST) series E300-E545 specifically designed to test the accuracy of a simulation model for a simple unitary vaporcompression cooling system. Overall the results indicate very good agreement between the predictions of the simulation results from ESP-r/HOT3000 and those from the other five simulation programs included in the test suite. Initial simulation results for two test cases with very high outside air intake resulted in an improvement of this aspect of the ESP-r/HOT3000 simulation model. Other differences in the simulation results can be reduced by using smaller simulation time steps. The application of the IEA HVAC BESTEST series of test cases improves the confidence in the simulation results from the ESP-r/HOT3000 model. In addition, it is found that the test cases can be an effective means of diagnosing potential problems with simulation models.
Pages: 253 - 260
Paper:
esim2004_32