湿热地区波纹翅片管式表冷器的运行性能和调节能力研究

Exploration on operational performance and regulating capacity of a wavy-finned tube air cooler in hot and humid regions

中文关键词: 湿热地区  波纹翅片管表冷器  单参数调节  双参数联合调节  供冷能力

英文关键词: hot and humid regions  wavy-finned tube air cooler  individual parameter adjusting  dual parameters coupled adjusting  cooling capacity.

中文摘要:

      作为空调系统中空气的热湿处理设备,表冷器在湿热地区应用广泛。然而,随着户式中央空调的发展,它与中小型冷水机的匹配及运行优化仍缺少指南。建立了某9排管空气-水逆流式波纹翅片管式表冷器的传热除湿数学模型,编程仿真,实验验证了仿真结果的可靠性之后,通过大量模拟探究了在广州和杭州两种湿热气候条件下应用时其供冷和除湿能力的差别,摸清了其随水流速度、风速以及进口水温而变化的规律；探讨了一定风速水流速度、风速水温或水温水流速度下,单独变水温、变水量和变风量时对表冷器供冷和除湿能力的调节范围；摸清了定水温、定水量或定风量情况下联合改变水流速度和风速、水流速度和水温以及风速和水温对其供冷除湿能力的调节范围。结论为表冷器与冷水机组的匹配以及运行控制策略的优化提供了参考依据。

英文摘要:

      As the warm and moist air handling unit of air-conditioning systems, air coolers have been widely used in hot and humid regions. However, there are not sufficient guidelines for their match mapping with water chillers and for optimizing operations of the air-conditioning systems under different meteorological conditions. Therefore, a set of mathematical model was established to solve the heat transfer and dehumidification problem of a 9-row tube air-water counter-flow wavy finned-tube heat exchanger. By means of Matlab programming, the model simulation results were validated by experimental data at first. Then, the effects of water flow speed, wind speed, and inlet water temperature on cooling capacity and dehumidification performances of the air cooler were compared under the weather conditions of Guangzhou and Hangzhou. The regulation ranges of cooling and dehumidifying capacity by adjusting wind speed, water flow speed or inlet water temperature individually were explored as the inlet water temperature and water flow speed, wind speed and inlet water temperature or water flow speed and wind speed were maintained constant. It also revealed the coupled effect of adjusting both inlet water temperature and wind speed, both inlet water temperature and water flow speed, as well as both wind speed and water flow speed on the regulation ranges of cooling and dehumidifying capacities when the water flow speed, wind speed and inlet water temperature were maintained constant, respectively. Results can be referred during equipment match mapping or control strategy optimizing processes.