Study On Heat Transfer Performance Of Shower Cooling Tower In Summer And Winter Conditions

Energy is the foundation for the survival and development of human society.With the continuous depletion of fossil energy and the improvement of people's environmental awareness,the use of renewable energy will be the only way for our country to build a resource-conserving society.The shower cooling tower is the equipment which can make the air touch the hot water directly to reduce the water temperature.In winter,the shower cooling tower was used reversibly to absorb heat from low-temperature heat source for heat pump by inputting a small amount of high grade electric energy which offers heat to rooms.And the shower cooling tower can not only avoid the idle of resources,but also reduce the amount of energy utilization.Therefore,cooling tower has a good prospect of popularization and application.Based on the theory,this paper introduces the composition and working principle of shower cooling tower and analyzes the process of heat and mass exchange,heat transfer theory of shower cooling tower and the force of droplet in the tower.In addition,the experiment about shower cooling tower was also established.In summer,the cooling efficiency of the shower cooling tower under different conditions(air inlet position,air dry-bulb temperature,air-water ratio,inlet water temperature)was studied.The results show that for up-shower cooling tower,the cooling efficiency of down air inlet position is higher than the up air inlet position,for the down-shower cooling tower,the cooling efficiency of low air inlet position is higher than the high air inlet position.The cooling efficiency increases with the growth of air-water ratio,however,when the ratio increases to 2.8,the efficiency of down-spraying cooling tower no longer increases.The cooling efficiency declines with the dry-bulb temperature increasing;For down air inlet position,the efficiency of cooling tower reduce with the increase of inlet water's temperature;For upward air inlet position,the efficiency of cooling tower increase with the growth of inlet water's temperature.In terms of the experiment about heat absorption efficiency in winter,the heat absorption efficiency of the heat source tower was studied under different air inlet positions,spray nozzle positions,air dry-bulb temperatures,relative humidity,air flow rates and solution inlet temperatures.The results show that the position of air inlet and spray nozzle have an obvious impact on heat absorption efficiency.And the heat absorption efficiency of down-spray heat source tower is better than that of the up-spray tower.In addition,the heat absorption efficiency decreases with the rising of dry-bulb temperature,while the total amount of heat absorbed from th e air increases.The heat absorption efficiency increases with the growth of air flow rate and relative humidity.With the inlet solution temperature increasing,the heat absorption efficiency improved significantly.Compared with other parameters,the inlet solution temperature accounts for the largest impact on heat absorption efficiency.