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With the social development, sustainable development of all walks of life regarded energy saving policy is considered a top priority for a major energy consumer in the construction industry - air-conditioning industry, it is imperative to reduce energy consumption. Radiant floor displacement ventilation system combined winter and summer can be shared, and contribute to the development of new cold and heat sources, and many other reasons, more and more industry attention. Radiant floor heating system earlier than the cooling system development, and some technical regulatory measures in many cities instance for the study. Radiant cooling system in the industry less theoretical research, also not mature norms to be followed, most of the designers reference radiant heating system design, so there are some problems. Therefore, this article is an example of a radiant floor cooling system in the actual project some of the problems were analyzed, some theoretical help for the future design and construction. I on the basis of previous theoretical studies, first, a brief summary of the radiant floor cooling and displacement ventilation systems with heat transfer process, as well as the simplified mathematical, physical model, a more profound understanding of the entire system, and to The four chapters of practical engineering analysis provides a theoretical basis. Second, by measuring problems in practical engineering analysis, found to cause indoor hot and cold comfort There are three possible reasons: First, the cooling capacity of the floor; Second, the uneven distribution of heat sources, can not be fully play a the thermal plume role; Third, indoor no additional exhaust port, the airflow can not be a regular circulation, the top of the room, hot air can not be discharged, thereby increasing the heat of the interior of the remainder. The article focuses on research of air distribution on indoor thermal comfort, and simulation software for the third reason for the use of Airpak2.1 no exhaust port 305 rooms and theoretical additional air vents virtual room simulation, the simulation results show no exhaust port 305 Room Found match, indicating the correctness of simulation, the final distribution of the airflow in the both cases, the indoor velocity field changes, as well as indoor PMV, PPD values ??were compared and found retrofitting room comfort air vents of the room than the exhaust air does not exhaust the natural infiltration alone, and therefore it makes sense to think that the additional air vents on the indoor air distribution. Article, there is still a little inadequate, due to the limitations of the construction conditions, additional air vents for 305 room only the first simulation, the hope that in future its practical engineering.
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