The New Flat Plate Heat Radtion Cooling Experimental Study And Numerical Simulation

The great power consuming from air conditioning nowadays has caused suchproblems as air pollution. With the pressing energy crisis, construction materialenergy consumption has caught a lot of attention and construction material energyefficiency has become a widespread topic in the society. In order to further reduceenergy consumption, the new type of refrigeration equipment has great potentialand plays a vital role. Compared with the traditional convection cooling, radiationcooling not only saves energy, but makes appropriate indoor temperature andhumidity so that people feel comfortable and healthy. To apply heat pipeline to thetechnology of radiation cooling plate, energy consumption can be further reducedand people will be more comfortable.This study introduces a brand-new plate heatpipe radiation board by application of plate micro heat pipe array, with low flowresistance, low water consumption, good thermal uniformity, no welding parts, highpressure sustainability, no leakage problem, free combination, simple and compactstructure, and moderate cost, etc.The thesis first studies the design of new flat plate heat pipe radiation board,and then by setting up a test platform targeting at new plate heat pipe radiation board,the study makes the data test for the supply of the cooling energy from plate heatpipe radiation board when inlet water temperature are12℃and20℃respectively andat different ambient temperature, and accurately deals with the test results whichshow that, when radiation board is vertical, its supply of cooling energy per unitcan be as high as110W/m2, and compared with other radiation cooling plate, theradiation board can completely meet the cooling load required, and save moreenergy.In order to verify the accuracy of experimental results, this study appliesCFX software to make numerical simulation to radiation board cooling effect. In thesimulation model, except for the radiation noodles, cold media for entry and exit asboundary condition as well as entry and exit boundary conditions, the rest are allinsulated. In addition, in the model, it is assumed that the interface of water and heatpipe is made from silica gel layer, and heat pipe and radiation board are completelyconnected with no thermal resistance. That is an ideal state of the simulation results.Through the experimental study and numerical simulation data compared to eachother, and the results have a higher consistency, and the simulation results are better than the experimental results, thus verifying the accuracy of the results.