Experimental Research For Application Based On Radiation Terminal Of Air Carring And Storing Energy

With the development of society, the common air conditioning system has been used very well in recent years.Roof radiation air terminal technology has been relatively mature nowadays, which inherits the characteristics of low energy consumption, high comfort, low noise of the traditional radiation system and solves the problems of the traditional radiation system such asthe complex construction, high maintenance, easy condensation, etc.Thermal comfort of roof radiation air conditioning system is a key part in its system design, and it can also be used as a basis for selecting equipment.Energy-saving research based on the thermal comfort can not only meet the requirements of thermal comfort, but also can get the maximum energy saving. In addition to hot summer and cold winter area heating problems were studied separately, for the air radiation end system can be one of the hot summer and cold winter area winter heating choice to provide experimental basis.The field test has been carried outin an office buildingofHunan university in this paper, and it can provide a large number of valuable measured data for thermal comfort and energy saving of air radiation conditioning system and also has laid the foundation for the field test standard.In this paper, specific work and conclusion is stated as follows:(1) Through the selection of air conditioning room air temperature, air relative humidity, air velocity and mean radiant temperature and participate in the test of the human body clothing thermal resistance and the actual measurement and calculation of human body metabolization, and used the Fanger professor proposed thermal comfort index PMV and PPD, the proper temperature range to meet the requirement of human body thermal comfort is obtained, and the calculated results compared with real comprehensive investigation and study to verify and validate the reliability of the results. Results the surface under the same thermal comfort requirements, the air can radiation end system compared with ordinary common air terminal system has a relatively good energy saving effect, Energy conservation and efficiency can reach 26.4%.(2) Through roof of medicine inspecting institutea in Changde balance room temperature, wall temperature, ground temperature and indoor air temperature measurement, combining the test point within send, return air wind speed, heat flux and the roof and the test data and the test time graph form, so that to make reasonable analysis, the results show that air supply area ceiling temperature and return air area ceiling temperature peak is synchronous, no obvious phase difference. Through the roof and the ground radiation heat exchange between effective improve the ground temperature, wall can maintain a higher temperature, and different heating conditions, the ground temperature is higher than the average prediction of indoor air temperature, it shows that in the process of heating in winter, and the body more close to the ground with a more comfortable temperature. Above all is for the air can be radiation end system can become one of the hot summer and cold winter area winter heating choice to provide reliable basis.