Heat Transfer Study Of Air Conditioning Condensate Water Applied To Glass Facade

As an unconventional water resource,condensate water is a kind of by-product when air condition working.Its potential water and cooling capacity has not been effectively exploited.Recycling and using condensate water will be helpful to building energy efficiency.At the same time,glass facade has been widely used in public buildings.A large area of glass facade is used as the outer envelope structure of the building,which greatly increases the energy consumption of building air conditioning in summer.In view of this phenomenon,This paper proposes the application of condensate water cooling glass facade,which comprehensively considers the amount of condensate water and the potential cold water resources,and also makes up for the shortcomings of the glass facade in the process of transmitting cold load to the outdoor.This is a new idea for the utilization of air conditioning condensate water and building energy efficiencyFirstly,the generation mechanism of condensed water and the current recycling methods are described,and the potential of condensate recycling in various places is discussed.Meanwhile,the development status of water facade is introduced.Next,the physical model of condensate cooling single-layer glass facade was built,and the water consumption and usage scale of the water facade were calculated and analyzed,the heat transfer mathematical model in summer was also given.The performance of condensate water cooling glass facade was analyzed by numerical simulation.Fluent was used to simulate the temperature gradient of water facade,and the number of water facade circulation was discussed.Then Ecotect and Fluent were used to analyze the light environment and thermal environment of the rooms with condensate water cooling glass facade respectively.The influence of condensate cooling glass facade to room's cooling load in summer was simulated by DeST,and energy consumption simulation and cost analysis were carried out for the whole building with condensate cooling glass facade in summer.Finally,add the condensate water to double skin facade(DSF),and its geometric model and mathematical model are established.Numerical simulation of condensate cooling DSF and the room was carried out by Fluent,and the characteristics of condensate cooling DSF and its influence on the room temperature field were also analyzedThe study shows that the installation of condensate water cooling single/double facade can reduce the outdoor cooling load into the room in summer.For condensate cooling single-layer glass facade,the average temperature of the room after installation decreased by 5.3%compared with the average temperature of the ordinary room.Solar radiation decreased by 37.3%.The room cooling load reduction rate of indoor by hour is 8.7%?19.5%.Through the analysis of building energy consumption-cost,under the condition of this paper,the cost can be recovered after 1.04 cooling seasons at most.But the effectiveness of condensate water cooling single-layer facade varies at different moments and is easily affected by external factorsFor the air interlayer of DSF,the condensate absorbs and takes away the heat in the interlayer,making the condensate water cooling DSF's interlayer air mean temperature 3.2%?4.3%lower than the ordinary one.This also makes the room equipped with condensed water cooling DSF,the average temperature is 1.7?3.1?lower than the ordinary DSF room.Increasing condensate water cooling DSF inlet wind speed and air interlayer spacing appropriately will reduce the indoor temperature.In general,the condensate water cooling glass facade can improve the indoor environment and reduce the energy consumption of the air conditioning to some extent on the basis of recycling the air conditioning condensate water.