Results 31 to 40 of about 15,890 (250)

The Experimental Assessment of R134a and Its Lower GWP Alternative R1234yf in an Automobile Air Conditioning System

Journal of Engineering, 2019
Reducing global warming potential (GWP) of refrigerants is needed to the decrease of ozone-depleting of refrigeration systems leakages. Refrigerant R1234yf is now used to substitute R134a inside mobile air conditioning systems.
Rafah Hussain, Issam Mohammed ali
doaj   +1 more source

R134a flow patterns in small-diameter tubes

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2005
R134a vapour-liquid two-phase flow patterns were studied in vertical small-diameter tubes. The observed flow patterns include bubbly, dispersed bubble, slug, churn, annular, and mist flow. Six integrated flow pattern maps, derived for two internal diameters (2.01 and 4.26 mm) and three different pressures (6.0, 10.0, 14.0 bar), are presented.
Chen, L, Tian, YS, Karayiannis, TG
openaire   +2 more sources

Experimental Analysis of the Performance of the Eco-Friendly R510A and R600a Refrigerants in a Retrofitted Vapour Compression Refrigerating System

Naše More (Dubrovnik), 2018
Halocarbon refrigerants have been scheduled for total phase out because they contributed significantly to the two major global environmental problems - ozone layer depletion and global warming.In this study, the performances of the environmentally ...
F. O. Borokinni, B. O. Bolaji, A. A. Ismail   +2 more
doaj   +1 more source

Simulation study on performance of a dual-source hybrid heat pump unit with alternative refrigerants

Energy and Built Environment, 2020
To solve the problems of single heat source heat pump systems in severe cold regions, a dual-source hybrid heat pump unit (DSHHPU) is proposed. The mathematical models of the DSHHPU when charging R134a or its alternative refrigerants R32, R290 and R600a ...
Chenguang Bai, Zongwei Han, Haotian Wei, Xiaomei Ju, Xinwei Meng, Qi Fu   +5 more
doaj   +1 more source

ENERGY PERFORMANCE ASSESSMENT OF R134A/LPG BLEND AS REPLACEMENT OF R134A IN VAPOR COMPRESSION REFRIGERATION SYSTEM

International Journal of Latest Trends in Engineering and Technology, 2017
Jatinder Gill, Jagdev Singh, M Mohanraj, S Jayaraj, C Muraleedharan, S Sekhar, D Lal, M Mohanraj, C Muraleedharan, S Jayaraj, M Fatouh, Kafafy El, P Srinivas, P Chandra, M Kumar, N Reddy, Taiwo Babarinde, O Ohunakin, D Adelekan, S Aasa, Sunday Oyedepo, Z Yang, B Liu, H Zhao, M Formeglia, A Bertucco, S Brunis, P Avinash, D Jabaraj, D Lal, B Tashtoush, M Tahat, M Shudeifat, M Kim, W Mulroy, D Didion, S Joseph Sekhar, Mohan Lal, Renganarayanan, T Ravikumar, D Lal, T Ravikumar, D Lal, M Akintunde, Meyer, R Agarwal, T Davies, O Caretta, Mohanraj   +48 more
openalex   +2 more sources

Development of Alternative Binary Mixtures to Replace HFC 134a in Domestic Refrigerator

Chemical Engineering Transactions, 2018
Thermodynamic and volumetric properties of alternate Refrigerant mixtures to replace R134a have been predicted using SRK EOS and modified PSRK mixing rule using UNIFAC method.
Parashurama Siddegowda, Govindegowda Mundur Sannappagowda, Ramesha D Kempegowda   +2 more
doaj   +1 more source

Drop-In Replacement of R134a in a Household Refrigerator with Low-GWP Refrigerants R513A, R516A, and R1234ze(E)

Energies, 2023
This study proposes the experimental evaluation of alternative refrigerants with low global warming potentials (GWPs) such as R1234ze(E), R513A, and the mixture R516A as a drop-in replacement for R134a in a domestic refrigerator with a volumetric ...
Juan M. Belman-Flores, Yonathan Heredia-Aricapa, Juan J. García-Pabón, Vicente Pérez-García, César G. Pérez-Reguera   +4 more
doaj   +1 more source

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

, 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.
Feng, W, Liu, P, Shi, L, Shu, G, Tian, H, Xu, Z   +5 more
core  

A regenerative supercritical-subcritical dual-loop organic Rankine cycle system for energy recovery from the waste heat of internal combustion engines [PDF]

, 2017
Organic Rankine cycle (ORC) system is considered as a promising technology for energy recovery from the waste heat rejected by internal combustion (IC) engines.
Wang, Enhua, Yang, Fubin, Yu, Zhibin, Zhang, Hongguang   +3 more
core   +1 more source

A study of chevron type plate design on pressure drop and friction factor of brazed plate heat exchanger

Environmental Progress &Sustainable Energy, EarlyView.
Abstract Brazed plate heat exchanger (BPHE) was analyzed using computational fluid dynamics (CFD) simulations by ANSYS Fluent to investigate the chevron‐patterned plates. The influence of geometric parameters, including corrugation pitch, depth, and angle was analyzed.
J. S. Huang, K. B. Then, X. W. Wang
wiley   +1 more source