毛细管顶板辐射系统加置换通风热舒适性模拟

Thermal Comfort Simulation of Capillary Roof Radiation System with Displacement Ventilation

随着社会经济的不断发展,人们对室内热舒适性要求也在不断提高,空调能耗十分巨大。对于传统空调系统而言,仍存在着一些问题如:温湿度耦合处理带来的损失、冷表面滋生霉菌、对流吹风感、盘管送风的噪音以及室内重复安装两套环境调节系统等,如提高舒适程度必然造成了更大的能耗损失。毛细管空调系统基于温湿度独立控制技术和长波辐射原理,结合置换通风后能有效地提高室内空气品质,实现能源的梯级利用,是一种舒适,节能、环保的空调系统[1]。建立了顶板式毛细管辐射末端加置换通风空调房间,采用CFD软件对特制房间内的热环境进行了数值模拟研究,得到供冷时房间内的温度场和速度场分布情况,对舒适性进行相关分析和评价。

With the continuous development of social economy,people’s requirements for indoor thermal comfort are also increasing,and the energy consumption of air conditioning is very huge.For the traditional air conditioning system,there are still some problems such as:temperature and humidity coupled processing loss,cold surface mold,convection blowing,coil air noise and indoor repeated installation of two sets of environmental regulation systems,such as improving comfort will inevitably cause greater energy consumption loss.Capillary air conditioning system is based on temperature and humidity independent control technology and long-wave radiation principle.Combined with displacement ventilation,it can effectively improve indoor air quality and realize cascade utilization of energy.It is a comfortable,energy-saving and environmentally friendly air conditioning system.In this paper,a roof plate capillary radiation terminal plus displacement ventilation and air conditioning room was established.CFD software was used to simulate the thermal environment in the special room,and the distribution of temperature field and velocity field in the room during cooling was obtained,and the correlation analysis and evaluation were carried out.