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In this paper, a novel flux-intensifying interior permanent-magnet motor (FI-IPM) with cost-effectiveness has been designed for applying to inverter-based air-conditioner refrigerant compressor. For satisfying both the load torque demand and the cost-effectiveness requirement, two kinds of tangentially magnetized PMs are employed by the proposed FI-IPM. One is the Dy-free MAGFINE to product main magnetic...
The introduction of the system of thermal energy storage (TES) based reverse cycle defrosting method using sub-cooling energy of refrigerant for air Source heat pump(ASHP) is given firstly. And then the characteristic of TES using sub-cooling energy of refrigerant in heating is experimentally researched. The results show that storing sub-cooling energy of refrigerant in the PCM can not only improve...
Existing problems of traditional air source variable refrigerant flow (VRF) air-conditioning system are analyzed. The disadvantages of traditional VRF air-conditioning system are described in detail: 1) its properties are seriously affected by outdoor temperature. 2) The system has lower cooling capacity and coefficient of performance with an expansion of the scale. 3) It is not convenient to install...
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