نتایج جستجو برای: compression refrigeration cycle

تعداد نتایج: 366070  

Journal: :International Journal of Low-Carbon Technologies 2020

Journal: :Entropy 2015
Zhenying Zhang Lirui Tong Xingguo Wang

Four different double-compression CO2 transcritical refrigeration cycles are studied: double-compression external intercooler cycle (DCEI), double-compression external intercooler cycle with an expander (DCEIE), double-compression flash intercooler cycle (DCFI), double-compression flash intercooler cycle with an expander (DCFIE). The results showed that the optimum gas cooler pressure and optim...

2010
P. E. Phelan Y. Gupta H. Tyagi R. S. Prasher J. Catano G. Michna R. Zhou J. Wen M. Jensen Y. Peles

Increasingly, military and civilian applications of electronics require extremely high-heat fluxes on the order of 1000 W /cm2. Thermal management solutions for these severe operating conditions are subject to a number of constraints, including energy consumption, controllability, and the volume or size of the package. Calculations indicate that the only possible approach to meeting this heat f...

2008
P. E. Phelan

1 Corresponding author: Telephone (480)965-1625, email [email protected] 2 Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic University ABSTRACT Increasingly, military and civilian applications of electronics require extremely high heat fluxes, on the order of 1000 W/cm. Thermal management solutions for these severe operating conditions are subject to a number of ...

2009
M. Y. Taib M. S. M. Sani M. M. Noor K. Kadirgama

Refrigerator is one of the home appliance utilizing mechanical vapour compression cycle in it process. Performance of the system becomes main issue and many researches are still ongoing to evaluate and improve efficiency of the system. Therefore, this paper presents the development process of refrigerator test rig and performance evaluation of a domestic refrigerator that has been used in Malay...

2014
G. F. Nellis S. A. Klein Gregory F. Nellis

The vortex tube is a structurally simple device with no moving parts that is capable of separating a highpressure flow into two lower pressure flows with different energies, usually manifested as a difference in temperatures. The vortex tube is relatively inefficient as a stand-alone cooling device but it may become an important component of a refrigeration system when employed as an alternativ...

Journal: :Jurnal Mesin Nusantara 2022

Refrigeration is one way to maintain the temperature of a material or room at lower level than ambient conditions around it by absorbing heat from room. The refrigeration system that widely used today for industrial purposes use vapor compression cycle, where in this cycle components has an important role compressor. Over time, performance compressor will decrease, so affect absorption process ...

Journal: :Strojniški vestnik 2023

The coefficient of performance (COP) for a gas refrigeration cycle was estimated using Matlab/Simulink and fuzzy logic. A model the developed, output compared to theoretical data. Additionally, logic used estimate COP arbitrary low- high-pressure levels. Simulation results were develop multi-input-multi-output (MIMO) Takagi-Sugeno-Kang (TSK)-based model. Both MIMO found be very well correlated ...

Journal: :TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 1972

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