Desiccant cooling system has been suggested to be a suitable system to improve IAQ (Indoor Air Quality) by its superior performance of humidity control, and decrease the health risk generated by mold growth. However, this system has a defect of its lower energy efficiency, so combining with power generation system, such as co-generation system, is commonly used to improve its energy efficiency. The purpose of this research is to realize a non-condensing environment by developing a non-condensing air-conditioning system (a HVAC system without condensation both in the indoor environment and inside the air-cooling system with high energy efficiency). In this paper, the authors studied the possibility and methods of combining desiccant cooling system with CO_2 heat pump that can improve its energy efficiency and provide steady heat source. The authors also studied the adaptability of the system under mid-summer climate, and evaluate the performance of thermal comfort, IAQ (Indoor Air Quality) and energy efficiency by experimental data and performance data of CO_2 heat-pump. In this paper, the actual situation and countermeasure of indoor microorganism pollution was reviewed, and a new type of desiccant air-conditioning system combined CO_2 heat pump is proposed. In this system, heat generated from condenser and gas-cooler of CO_2 heat pump are used to be the heat source of desiccant air-conditioning system. The authors also studied the performance of system by assume the CO2 heat pump has combined with desiccant air-conditioning system. The result of calculation shows the system COP to near 2, and is a significant improvement of energy efficiency by comparing with a normal desiccant air-conditioning system.
|Translated title of the contribution||Study on Non-Condensing Air-Conditioning System for Next Generation : Part1-Proposal of Desiccant Air-Conditioning System Combined with CO_2 Heat Pump and Study on System Performance|
|Publication status||Published - 2006|
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