Results 21 to 30 of about 765 (158)

Study on Mixed Refrigerants Selecting and Matching of a Four Stage Auto-cascade Refrigeration

open access: yesZhileng xuebao, 2013
The selection and mixture ratio of the mixed refrigerants are important to a multistage auto-cascade refrigeration system. A simulation method was found for the mixed refrigerants selection and ratio calculation by using the commercial software REFPROP8 ...
Zhao Wei   +4 more
doaj  

A new heat transfer correlation based on flow patterns for hydrocarbon refrigerants condensation flow

open access: yesCase Studies in Thermal Engineering
To accurately predict heat transfer coefficients for hydrocarbon refrigerants condensation flow in heat exchangers is imperative for designing efficient systems.
Xianshi Fang   +4 more
doaj   +1 more source

Operation analysis of C3-MR process cold box by grey system theory

open access: yesSN Applied Sciences, 2021
In this paper, the problems of high refrigerant line differential pressure and uneven distribution of cold energy in cold box regulation under C3-MR process are studied. Five reasons are predicted by engineering performance.
Yuan Yang, Chuantao Xiao, Zhipeng Jia
doaj   +1 more source

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.
孙兆虎   +3 more
doaj   +2 more sources

Experimental Study of PVTx Properties of Mixture Refrigerant R1234yf/R134a

open access: yesZhileng xuebao, 2016
In order to get the thermophysical properties of mixed refrigerants R1234yf/R134a, the PVT properties of mixture refrigerant R1234yf/R134a with mass fraction 55%/45%, 50%/50%,45%/55% in the range of 268 ~ 323 K were measured by using high-precision PVTx ...
Chen Rishuai, Qi Yingxia, Wu Dong
doaj  

Optimization researches on the cooling-down process of the linde-hampson refrigeration system for a high-low temperature test chamber

open access: yesCase Studies in Thermal Engineering, 2023
This paper focus on the cooling-down performance of the LHRS for a high-low temperature test chamber, and proposed a new method to optimize the cooling-down process of the LHRS based on a quasi-steady-state simulation model to investigated the optimal MR
Jingpeng Zhang   +6 more
doaj   +1 more source

Optimization of BOG Reliquefaction Process of Carbon Dioxide Considering Nitrogen Content

open access: yes한국해양공학회지
As the importance of carbon capture and storage (CCS) technology increases for greenhouse gas reduction, CO2 transportation technology is also becoming crucial.
Ijun Jeong, Youngsub Lim
doaj   +1 more source

Sub-Cooling Auxiliary System for Performance Enhancement of Main Refrigeration System [PDF]

open access: yesEngineering and Technology Journal, 2015
In presentwork, a sub-coolingauxiliary system is integrated with vapour compression refrigeration system to predict the performance characteristics and energy saving of the system.
Mustafa W. Hamadalla   +2 more
doaj   +1 more source

Heat Exchangers in A C3MR LNG Plant, Cooling Curves and Their Effects on Efficiency [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2010
In this paper, we are going to improve the energy efficiency of an industrial C3MR base load LNG plant by changing its refrigerant components and its mole fractions in liquefaction and subcooling cycles based on the cooling curves generated in the main ...
Hamid Safari, Masoud Fasihbeygi
doaj  

Proposals for Next-Generation Eco-Friendly Non-Flammable Refrigerants for a −100 °C Semiconductor Etching Chiller Based on 4E (Energy, Exergy, Environmental, and Exergoeconomic) Analysis

open access: yesEnergies
Recent advancements in cryogenic etching, characterized by high aspect ratios and etching rates, address the growing demand for enhanced performance and reduced power consumption in electronics. To precisely maintain the temperature under high loads, the
Hye-In Jung   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy