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Through simulating the process of energy storage heating floor contain phase change material (PCM), the action and function of PCM in building energy storage are discussed. Analysis and numerical simulation the energy storage process in building structure with PCM packaging module, discussion the relation of temperature distribution, heat condition, energy storage and discharge time and PCM efficiency...
To discusses the rule of heat transfer during the skin burns and the relationship between the depth of skin burns and action time, this paper used the heat transfer theory to set up the skin burns heat conclude model of one-dimension unsteady state infinite objects. By the MATLAB software, the skin burns process temperature distribution has been numerical calculated. The simulated gave the affected...
In this paper, the heating system with distributed variable frequency pump is analyzed. As the theory of dynamic distributed heating system improves gradually, which controlled by climate compensator, and for its great capacity of energy-saving, more and more heating systems become to use it, especially in the improvement works. In the paper, the author analyses how to design the system and the factors...
Of a placement at the roof of a building using solar collectors to heating the air thermal properties were studied. Introduction a unit of the air flowing through the solar radiation collector temperature rise that characterized the parameters of a combination of collector, through measuring the thermal performance of the relevant factors of collector, such as outlet temperature, export air speed...
On the base of the getting best action of the phase change material (PCM) properties, a new radiant heating structure of the energy storage floor by solar hot water is designed, which was to put heat pipes in PCM layer, without concrete in it. The PCM thermal storage time is mainly studied when the floor surface temperature is admired under different low-temperature hot water temperatures. With the...
The system of gas engine-driven heat pump (GEHP) combined cooling heating & power can provide the electric power for other equipments of building ,and is now one of the main directions that develop of power supply of distribute type energy system. This text analyzed the energy efficiency of GEHP at different combined supply energy modes. Simulation computes the relation to the Primary Energy Ratio...
In this article, the heat model with solar panel composite wall structure was set up. simulation on heat resistance of solar composite wall was carried out, associated with three air flow patterns which refer to stillness, natural convection and forced convection, and compared with common wall without solar panel. It was found that the conditioning load was decreased remarkably due to the wall's reducing...
The field-synergy theory has been applied for convective heat transfer analysis of fluid flow inside solar wall, the factors affected convective heat transfer was discussed. The results indicate that increasing the gradient of heat flux along the vertical direction of solar wall-, increasing the ratio of vertical velocity u to horizontal velocity v(u/v>5) ^ and changing the direction of temperature...
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