G208 IN-SITU PERFORMANCE TEST AND SIMULATION OF AN AIR SOURCE HEAT PUMP(Vapor compression refrigeration system)
スポンサーリンク
概要
- 論文の詳細を見る
For small capacity air source heat pumps, laboratory scale experiments for measuring performance can be carried out with well controlled indoor and outdoor air conditions so that the standard test conditions are satisfied. For large capacity systems, however, experiments become extremely difficult if inlet air conditions need to be controlled. In this study, in-situ performance test of a 20 RT (70 kW) air-to-air heat pump which has a feature of recovering ventilation energy is carried out. Since test conditions, such as indoor and outdoor air conditions can not be controlled to satisfy the standard test conditions, experiments are done with the inlet air conditions as they exist. From the experimental data obtained with the non-standard test conditions, simulation program is developed to estimate the performance of standard test conditions. The map-based compressor model is used and necessary parameters are determined from the measurements. Single tube crossflow heat exchanger is modeled by ε-NTU method with the assumption of refrigerant-side mixed and air-side unmixed. Air-side heat transfer coefficients are determined from the measurements. From the simulation, performance of a large capacity air source heat pump for standard and other various conditions, effects of ventilation and changes in heat exchanger area are calculated. This study provides method of predicting the performance of air source heat pumps in which in-situ performance test is necessary.
- 2000-10-01
著者
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Kim Youngil
Thermal
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Baik Young
Thermal
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Chang Youngsoo
Flow Control Research Center, Korea Institute of Science and Technology
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Chang Youngsoo
Flow Control Research Center Korea Institute Of Science And Technology
関連論文
- In-Situ Performance Test and Simulation of an Air Source Heat Pump
- G208 IN-SITU PERFORMANCE TEST AND SIMULATION OF AN AIR SOURCE HEAT PUMP(Vapor compression refrigeration system)
- H309 MODELING TRANSFER FUNCTION OF AN ELECTRIC AIR HEATER AND COMPARISON OF CONTROL PERFORMANCES ACCORDING TO CONTROL STRATEGIES(Heat transfer control)