Results 1 to 10 of about 13,565 (218)

Preliminary experimental comparison and feasibility analysis of CO2/R134a mixture in Organic Rankine Cycle for waste heat recovery from diesel engines [PDF]

open access: yesEnergy Conversion and Management, 2019
This paper presents results of a preliminary experimental study of the Organic Rankine Cycle (ORC) using CO2/R134a mixture based on an expansion valve.
Peng Liu, Hua Tian, Wei Feng
exaly   +2 more sources

Capture Fluorocarbon and Chlorofluorocarbon from Air Using DUT‐67 for Safety and Semi‐Quantitative Analysis [PDF]

open access: yesAdvanced Science
Fluoro‐ and chlorofluorocabons (FC/CFCs) are important refrigerants, solvents, and fluoropolymers in industry while being toxic and carrying high global warming potential.
Xiao‐Hong Xiong   +9 more
doaj   +2 more sources

Comparison of R134a and R516A’s Performance at Different Air Velocities in Two Evaporator Ejector Cooling System

open access: yesHittite Journal of Science and Engineering, 2023
This study aims experimentally to investigate the performance parameters of R134a and the alternative R516A refrigerant in two evaporator ejector cooling system (DEES) at different air velocities of evaporator#1.
Mahmut Cüneyt Kahraman   +2 more
doaj   +1 more source

Experimental study on phase change heat transfer cooling plate for multiple heat sources cooling with high heat flux

open access: yesXi'an Gongcheng Daxue xuebao, 2023
In view of the heat dissipation of electronic components with high heat flux, five phase change heat transfer cold plates with different structures and processing methods were designed, the effects of cold plate structural parameters, heat flux ...
LIU Kai   +4 more
doaj   +1 more source

Evaluation of The Use R450A as an Alternative to R134a in Low and Medium Temperature Heat Pump Systems: 4-E (Energy, Exergy, Environmental and Enviro-Economic) Analysis

open access: yesJournal of Advanced Research in Natural and Applied Sciences, 2021
This investigation presents a theoretical evaluation of the use R450A replace to R134a in the low and medium temperature heat pump systems. The energy, exergy, environmental and enviro-economic analyzes of heat pumps have been performed for two ...
Ragıp Yıldırım
doaj   +1 more source

Theoretical analysis of a Low GWP Refrigerants as a Drop in substitute of R134a in a Domestic Refrigerator [PDF]

open access: yesIranica Journal of Energy and Environment, 2018
Now a days Fridges and Air-conditioners are mostly used in domestic environment. The CFCs have been almost ruled out since 1995 due to their huge impact on the ozone layer, due to the above problem HFC refrigerants are introduced but these are having a ...
M. Shaik Sk, K. Srinivas
doaj   +1 more source

Performance Evaluation of Centrifugal Refrigeration Compressor Using R1234yf and R1234ze(E) as Drop-In Replacements for R134a Refrigerant

open access: yesEnergies, 2022
With the increasing global requirements for environmental protection, refrigerants with ODP of 0 and low GWP are widely concerned and applied. In this paper, the CFD numerical method simulates the R134a centrifugal compressor directly replaced by R1234yf
Kexin Yi   +5 more
doaj   +1 more source

Experimental study of R290 replacement R134a in cold storage air conditioning system

open access: yesCase Studies in Thermal Engineering, 2022
R290 refrigerant offers good environmental protection and thermodynamic characteristics. The feasibility of R290 replacing R134a was summarized through theoretical analysis and experimental tests in this paper.
Huifan Zheng   +5 more
doaj   +1 more source

Analytical considerations of flow boiling heat transfer in metal-foam filled tubes [PDF]

open access: yes, 2012
Flow boiling in metal-foam filled tube was analytically investigated based on a modified microstructure model, an original boiling heat transfer model and fin analysis for metal foams.
Du, Y.P.   +3 more
core   +4 more sources

Dynamic control strategy of a distillation system for a composition-adjustable organic Rankine cycle [PDF]

open access: yes, 2017
Using zeotropic mixtures as working fluids can improve the thermal efficiency of Organic Rankine cycle (ORC) power plants for utilising geothermal energy.
Collings, Peter, Wang, Enhua, Yu, Zhibin
core   +1 more source

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