Research On Performance Of Experiment Of The Heat Transfer Panel Of Capillary Imbibition Core

With the increasingly prominent of energy issues and more and more high demand for comfortable indoor environment of people, developing a comfortable and energy saving air-conditioning is imperative. This paper presents a new type of the ending system of air-conditioning---the Heat Transfer Panel of Capillary Imbibition Core (HTPCIC). This air-conditioning mode can simultaneously satisfy winter's heating and summer's cooling, so that it can meet the requirement of people's heath and comfort and achieve good energy saving.Filling materials of the capillary suction liquid core radiator is made by preparing gypsum and a little amount of potassium citrate. The preparation of the gypsum(CaSO₄ 2H₂O) with a variety of ways can influence its physical properties, including vertical suction height h,the water velocity u in the horizontal state,the porosityηand the average pore radius. Adding a bit of potassium citrate in the water will improve performance of the gypsum, and the vertical suction height,the water's horizontal velocity and the porosity can reach120㎝,4.2㎜/min and 69.4% respectively. Increasing of porosity of the gupsun promotes its capillary suction force, and the working fliud can rapidly flow through the gypsum under the action of capillary suction force, so the gypsum will become auniform capillary channel. In this paper, filling in the heat transfer panel of capillary imbibition core by the gypsum with high porosity and passing into the panel with heat and cool water or other cooling media, so that the panel send the heat and cool to the building space in the form of radiation to decrease or increase the temperature of the space as the terminal device of the air-conditioning system.By changing the superficial emissivity of HTPCIC (low emissivity 0.23, high emissivity 0.95 ) filled with the gypsum which average pore radius is 0.015mm and the porosity is 55% and the temperature of the cold water which is passed into the panel, making the indoor temperature maintain at the constant temperature 27℃(±1℃), and calculate the refrigerating capacity of the HTPCIC with unit area. in addition, through experiments the paper analysis resistance and the quality of the circulating water of the HTPCIC.The experimental results indicate that: the refrigerating capacity of the HTPCIC satisfies the requirements of conventional radiation air-conditioning, and comparing with the serpentine radiant heat transfer pipes its initial cost reduction of 80% and refrigerating capacity increased by 20%～30%. Operating after long time, the calcium content of the circulating water of the radiant air-conditioning system of capillary imbibition core maintains changeless to ensure the basic life. And the rolling resistance of this kind of radiant heat panel is 20%³0% less than the serpentine radiant heat transfer pipes and it has more superior thermal uniformity and better comfort.If used by combine with the low-grade energy, the radiant air-conditioning system of capillary imbibition core can create much more energy-saving than the traditional air-conditioning system of fan cail. So this kind of air-conditioning system can create much more energy-saving and comfortable environment for the people and become an effective form of the building energy conservation and being accepted gradually by the common people.