Untersuchungen zur Intensivierung des Wärmeüberganges und Lüftungskonzepte bei Hochleistungs-Verdunstungskühlung für Gebäude

在室外空气湿度低的情况下，蒸发式空气冷却是获得舒适室内气候的一种简单方法。与基于卤素的空调不同，基于蒸发冷却的系统节能、经济且不会破坏环境。然而，它们有一定的局限性，现有蒸发冷却器的性能有很大的改进空间。这些冷却器可用于建筑物的集中式或分散式冷却布置。在混合通风中，试图尽可能地利用自然力，如风和烟囱效应。但在夏季的某些情况下，额外的降温是必要的。因此，必须发展一种混合通风策略，使用蒸发式冷却器为建筑物降温。在印度鲁尔基印度理工学院机械与工业工程系制冷与空调实验室，过去35年来一直在加强加热和冷却过程中的换热方面的研究。同样，德国德累斯顿理工大学热力学和建筑能源系统研究所在过去30年里一直在进行通风和热舒适方面的研究工作。将这些经验结合在一起，设计包括蒸发冷却在内的混合通风系统，将有助于通过在各种气候条件下保持热舒适性来节省能源。

Evaporative air-cooling is an easy way of attaining a comfortable indoor climate provided that outside air humidity is low. Unlike halogen based air-conditioners the evaporative cooling based systems are energy efficient, economical and do not damage the environment. However, they have certain limitations and there is a significant scope of improvement in the performance of existing evaporative coolers. These coolers can be useful for the centralized or decentralized cooling arrangement of the building. In hybrid ventilation it is tried to use natural forces like wind and stack effect as much as possible. But for some situations in the summer period additional cooling is necessary. Therefore, a hybrid ventilation strategy has to be evolved for the use of evaporative coolers to cool the buildings. In the Refrigeration & Air-conditioning Laboratory, Department of Mechanical & Industrial Engineering, Indian Institute of Technology, Roorkee, India, the research investigations have been carried out for the last 35 years in the area of enhancement of heat transfer during heating and cooling processes. Similarly, the research work in the area of ventilation and thermal comfort has been going on in the Institute for Thermodynamics and Building Energy Systems, TU Dresden, Germany for the past 30 years. Bringing together these experiences and designing of a hybrid ventilation system including evaporative cooling will help to save energy by maintaining the thermal comfort for a wide range of climatic conditions.