Results 21 to 30 of about 6,205 (50)

Study on Heat Transfer of Phase -Change Cool- Storage Slab in Solidification

open access: yesZhileng xuebao, 2005
Accurate solution and approximate integral methods were applied to study the heat transfer properties of a kind of phase-change material developed in this study which contained in a slab enclosure during solidification.
杜雁霞   +3 more
doaj  

Experiment Study of Pool Boiling Heat Transfer of Multicomponent Mixed-refrigerants

open access: yesZhileng xuebao, 2006
Heat transfer coefficients in nucleate boiling on a smooth flat surface were measured for pure fluids of R-134a,propane,isobutene,and their binary and ternary mixtures at different pressures from 0.1 to 0.6 MPa.
doaj  

Gas Forces Analysis of The Twin - scroll Compressors

open access: yesZhileng xuebao, 2005
On the basis of the analysis of each gas force in the twin - scroll compressors, the calculation formulae of working volume and each gas force at all different crankshaft angles were derived.
刘振全, 高艳, 王君, 孟亚男
doaj  

Research on Thermal Field Dynamic Response in Air- conditioning Room during Start- Up Process

open access: yesZhileng xuebao, 2005
In this study, Fluent as a computational fluid dynamic software was used to simulate the process of unsteady heat conduction and convection of the air in an air - conditioning room during the start - up process of the air - conditioning instruments.
张欢   +4 more
doaj  

Concentration Characteristic Line of Refrigerant Mixture R32/R125/R134a and Its Performance Analysis

open access: yesZhileng xuebao, 2005
Charge and leak processes of zeotropic refrigerant can cause the change of mixture concentration in refrigerant systems and affect the system performance.
邵亮亮, 张春路
doaj  

Study on Optimization Matching of Catcher and Vacuum pump in Vacuum cooling

open access: yesZhileng xuebao, 2006
The matching of the catcher and the vacuum pump determines the pre-cooling quality during vacuum cooling processes.With the assumption of the water vapor resulted from the vacuum cooling to be ideal gas,the energy consumptions of the catcher and the ...
doaj  

Optimization on Performance of Regenerative Brayton Refrigeration Cycle

open access: yesZhileng xuebao, 2006
Based on an irreversible model of a regenerative Brayton refrigeration cycle,expressions for several important performance parameters such as the cooling load,coefficient of performance,and power input,and the optimal relation between the cooling rate ...
doaj  

地下冷库建筑设计热物理理论基础

open access: yesZhileng xuebao, 1980
陈启高
doaj  

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