Results 51 to 60 of about 8,573 (94)

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  

Universidade do Porto : Novas instalações da Faculdade de Engenharia - Pólo 2 : Projecto de execução : Instalações e equipamento eléctrico : Alimentadores e quadros : Clas. de locais : Departamento de Eng. Civil : Planta : Piso 4 : N. º 7699 Folha 4-075-02 PE IEE 399 [PDF]

open access: yes, 1992
DocumentoUniversidade do Porto : Novas instalações da Faculdade de Engenharia - Pólo 2 : Projecto de execução : Instalações e equipamento eléctrico : Alimentadores e quadros : Clas. de locais : Departamento de Eng.
Direcção de Serviços de Planeamento, 1992-2001
core  

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  

Introduction of Option and Iteration into Pregroup Grammars [PDF]

open access: yes, 2008
ISBN 978-88-7699-125-
Dikovsky, Alexandre   +3 more
core  

Santa Fe New Mexican, 08-12-1907 [PDF]

open access: yes, 1907
https://digitalrepository.unm.edu/sfnm_news/7699/thumbnail ...
New Mexican Printing Company
core   +1 more source

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  

Experimental Study on Vacuum Pre - cooling for Chinese Cabbages'''' Weight Loss

open access: yesZhileng xuebao, 2007
Long stem Chinese cabbages planted in Tianjin were used as experimental samples.The relationship be-tween handling capacity and vacuum pre-cooling's time was investigated.The empirical equation of the relationship between weight loss and handling ...
Liu Yang   +3 more
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  

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