Centrifugal magnetic suspension water chiller and DOAS (1): Status

Dedicated outdoor air systems (DOAS, also known as the independent temperature and humidity control system), which are widely praised at home and abroad, have obvious effects in energy saving and indoor air quality improvement. Analyses the performance of high-temperature water chillers and temperature and humidity control equipment adopted in existing domestic independent temperature and humidity control systems. Experiments and engineering practice show that existing DOAS has several problems and higher initial investment, requiring further research and improvement. The COP of centrifugal magnetic suspension water chillers is very high when chilling water temperature from 3 to 20 ℃. It is a kind of ideal cold source for DOAS. If it is used combined with air dehumidifier units with high moisture removal and air conditioning terminal equipment with low energy consumption, its performance and economic efficiency will be greatly improved.