Guanzhong Peng

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Air flow organization and thermal comfort of an air conditioning office were numerically simulated with k-ε turbulence model. The finite volume method and SIMPLE arithmetic were adopted to disperse and solve the differential equation. Distribution law of mean age of air, temperature nephogram, velocity nephogram, PMV nephogram and PPD nephogram was studied(More)
Cold storage system called “thermal storage cooling tower” which works with cooling water of air-conditioning system is introduced. By setting packing materials above the air conditioning pool of underground commercial building, a new type heat and mass transfer device is developed to replace the original combination of cooling tower and thermal storage(More)
It is important for energy saving in air conditioning system to carry out energy saving operation of air conditioning water system. Moreover, it is also a useful measure of reducing maintenance management cost in air conditioning system. Rapid development of frequency conversion technology makes it possible to work reliably for variable water flow.(More)
As the earth sheltered buildings are constructed worldwide then the heat transfer characters between the indoor air and atmosphere have been an import problem to study. The physical and mathematical model for the double layer wall sticking lining envelope of shallow-buried underground engineering is described and built in this paper, separately. The(More)
Emissions of underground diesel engines are facing more and more stringent control because of their adverse effects on human body. The novel zonal guarantee technology presented in this paper will remove the heat and contaminant simultaneously and effectively. The technology divides the space into the stronger load zone and the weaker load zone. For(More)
In this paper the ZGT (zonal guarantee technology), which has been introduced in the companion paper, is applied to the deep-buried underground engineering. Then, four novel ventilation and cooling systems for the underground diesel generator plant are presented. The optimization of the location of the fume exactor and exhaust duct and the speed of the(More)
It is the premise for the diesel generator set to maintain the proper indoor environment of underground diesel generator plant. Based on the analysis and summarization of the characters of the heat and contaminant distribution in the underground generator plant, this paper proposes the ZGT (Zonal Guarantee Technology) to remove the residual heat and(More)
It is the premise for the diesel generator set to maintain the proper indoor environment of underground diesel generator plant. Based on the analysis and summarization of the merits and drawbacks for the diesel generator set heat exchange modes and ventilation and cooling schemes of underground diesel generator plant, this paper proposes a novel ventilation(More)
In order to solve the problem of supercooling and phase segregation of sodium acetate trihydrate during solidification, it is necessary to add appropriate nucleating agent and thickeners. Five commonly used nucleating agents, i.e. Na2HPO4¿12H2O, Na3PO4¿12H2O, Na2CO3¿10H2O, Na2SiO3¿9H2O and Na2B4O7¿10H2O, three thickeners, including carboxymethyl cellulose(More)
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