| In this paper the new type capillary plane HVAC system is analyzed, mainly focus on the numerical computation of pipe microcosmic environment and simulation of indoor thermal environment of capillary plane HVAC system. Firstly, the heat transfer performance of pipe microcosmic environment is studied by using the simple iterative method for designing the computation programs in numerical calculation, and the relations of the average temperature of supplying and return water, pipe distance, pipe diameter, pipe installation depth and the radiation surface average temperature, average heat flow densities are analyzed. Secondly with the example of a room where the capillary mats are installed, by using the method of CFD, the indoor thermal environments under several modes of different capillary mats installation positions, different install areas and different airflow modes in summer and winter are simulated respectively. The indoor thermal environment is evaluated and the optimal scheme is obtained by comparing and analyzing the simulation results of the temperature, velocity, relative humidity and PMV-PPD fields.
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