Heat island effect in evaporative cooling water chillers
For evaporative cooling water chillers in engineering applications,the exhaust airflow is easily sucked in the air inlet,resulting in heat island effect,affecting the performance of water chillers.Under the same intake air volume and inlet temperature&humidity,numerical simulation is conducted to study the flow characteristics,such as pressure distribution,temperature distribution,and velocity distribution under different exhaust louver angles.The corresponding exhaust louver angle is obtained under optimal exhaust airflow organization and spatial flow field distribution,and it is verified through on-site engineering testing.The results show that when the exhaust louver angle is not less than 30°,it can avoid the formation of heat island effect theoretically;45°is recom-mended as the exhaust louver angle in the engineering application,so as to deal with unex-pected instances with a higher redundancy coefficient.
evaporative cooling water chillersexhaust louver angleairflow organiza-tionheat island effectnumerical simulation
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