The performance of heat pump integrated with chilled water wall for air conditioning and domestic hot water

Sustainable Built Environment Conference 2019 Tokyo Built Environment in an era of climate change: how can cities and buildings adapt?

生态环境科学

Fang, Yi-Ming^1 ; Jeffrey Lee, M.C.^1 ; Mitterer, Christoph^2 ; Kunzel, Hartwig M.^2

Nationl Taichung University of Science and Technology, Department of Interior Design, No.129, Sanmin Rd., Taichung City

404, Taiwan^1

Fraunhofer Institute für Building Physics, Fraunhoferstrasse 10, Valley

83626, Germany^2

关键词: Chilled water;    Domestic hot water;    High energy efficiency;    Indoor air pollutants;    Indoor environment quality;    Multifunctionality;    Operating performance;    Ultra-violet light;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/294/1/012032/pdf
DOI  :  10.1088/1755-1315/294/1/012032

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Chilled water walls (CWWs) have been developed as a means of air cooling, dehumidifying, and air cleaning. Their operating performance is superior to that of a radiant cooling ceiling, which does not clean the air and reduce the dew water temperature. The CWW is connected to a compressor that chills the water, and the setup thus consumes much energy when operated all day. When integrated with a heat pump, the CWW can chill water on one side and heat water on the other side. Because the water temperature of the CWW is 10°C- 14°C, the heat pump can simultaneously generate chilled water at 7°C-10°C and hot water at 50°C. Additionally, indoor air pollutants are steadily removed by the thermal flow and flushed into the water tank by the water to clean the air. The dirty water can be cleaned using a filter and ultraviolet light. The heat pump integrated with a CWW supplies not only chilled water for air conditioning but also a domestic hot water supply, resulting in high energy efficiency due to multifunctionality.