Capillary network simulation of leaf veins and human capillary mechanism, by the outer diameter of 3.5-5.0mm (wall thickness of 0.9mm or so) of the capillary tube and the outer diameter of 20mm (wall thickness of 2mm or 2.3mm) of the supply and return main pipe constitutes a pipe network. Insulation layer, heat dissipation layer, and capillary network combined use, composite into a capillary network heat exchanger, greatly improving the capillary network of a single structure of the heat dissipation capacity and use of the purpose, to protect the capillary tube wall from damage. Plane radiation air-conditioning system of capillary network generally adopts a small cycle of large systems, and the use of special solutions as a medium, can avoid system blockage, easy to control. In order to achieve higher comfort requirements and avoid condensation, the room should also be equipped with humidity control and fresh air system. Capillary network production and application of technology has been highly monopolized by German enterprises, Beijing Pulaifu Environmental Technology Co., Ltd. has broken the monopoly of foreign enterprises, research and development of domestic production of capillary network heat exchanger, applied for a number of invention patents and utility model patents, and has entered the stage of mass production. 2007 May, the product in the China Academy of Building Research Air Conditioning (National Air Conditioning Equipment Purchase Food Supervision and Inspection Center) for testing. In May 2007, the product was tested at the Air Conditioning Institute of China Academy of Building Research (National Air Conditioning Equipment Supervision and Inspection Center). To a node of the test as an example, the results are as follows: 1, in the experimental pressure of 1.5Mpa, no leakage; 2, in the water supply temperature of 45 ℃, back to the water temperature of 40 ℃, the base temperature of 20 ℃, △ T = 22.5 ℃, converted to samples of the unit area of the heat dissipation of Qdr = 240.88W/m2; 3, in the water supply temperature of 15 ℃, back to the water temperature of 20 ℃, the base temperature of 26 ℃, △ T8.5℃, the cooling capacity per unit area of the folded sample Qdl=122.84W/m2.