Results 161 to 170 of about 1,757 (201)

Comparative analysis of flow boiling characteristics of an R290/R1270 mixture and R290 in a plate heat exchanger with offset strip fins

Applied Thermal Engineering, 2023
Mohammad Salman, Rajendran Prabakaran, Dongchan Lee   +2 more
exaly   +2 more sources

Experimental analysis of the use of R290 in a small ice maker

, 2019
In the present paper, an experimental study of the use of R290 in an ice maker is presented. The analysis deals with a vapour compression system that originally works with R404A and produces 85 kg per day of ice with water inlet temperature equal to 10 °C and air temperature equal to 10 °C.
L. Molinaroli, G. Romagnoli, T. Vania, S. Zanzottera   +3 more
openaire   +2 more sources

Energieversorgung mit R290-Wärmepumpen

HLH, 2023
Die Nutzung regenerativer Wärmeerzeugungssysteme und die damit verbundene Reduzierung von CO2-Emissionen sind wichtige Ziele für die Zukunft. Dabei spielen Wärmepumpen mit natürlichen Kältemitteln eine entscheidende Rolle. Der Blick auf ein aktuelles Projekt im Stuttgarter Vorort Leonberg zeigt, vor welchen Entscheidungen Ingenieure und Fachplaner ...
openaire   +1 more source

The Comparison of R290 and Mixture of R600a with R290 on Evaporator Temperature at Low Charge

2019 5th International Conference on Science and Technology (ICST), 2019
One of the negative impacts of low R290 charge within the air conditioning system is the lower evaporator temperature which is easily frost forming at the evaporator pipe. One way to increase the evaporator temperature is to add R600a into the system. The methodology of this present research is a theoretical analysis of performance pure R290 and R290 –
Jeri Tangalajuk Siang, Jeremias Mathias Leda, Firdaus Chaeruddin   +2 more
openaire   +1 more source

Experimental study on the thermal performance of R600a, R290 and R600a/R290 mixtures in a retrofit R134a refrigeration system

2015 International Conference on the Industrial and Commercial Use of Energy (ICUE), 2015
Refrigeration systems play paramount roles in life quality of human beings and social development in terms of food security, environmental impact, and energy efficiency. The traditional CFC, HCFC, and HFC refrigerants have been in the process of phase-out and being replaced by the sustainable working fluids.
Teboho Ramathe, Zhongjie Huan, Aggrey Mwesigye   +2 more
openaire   +1 more source

Study of refrigeration system with minichannel condenser using R1234ze, R134a, R152a, R600a, R290 and mixture of R290/R600a (50/50)

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2023
A versatile vapor compression refrigeration (VCR) system is designed, developed and manufactured for testing different alternative refrigerants to R134a. The refrigerants such as R1234ze, R152a, R600a, R290 and mixture of R290/R600a (50/50) refrigerants are tested with an aluminum minichannel condenser which is designed for R134a.
Vijay W Bhatkar, Anirban Sur, Ramesh Kumar   +2 more
openaire   +1 more source

Measurements of the Surface Tension for the R290 + R32 Mixture

Journal of Chemical & Engineering Data, 2008
There were no data of the surface tension for the R290 + R32 mixture which is expected as one of the new refrigerant mixtures, and its prediction is considered to be difficult because it is a mixture of a very polar molecule with a nonpolar molecule.
Katsuyuki Tanaka, Yukihiro Higashi
openaire   +1 more source

R290 Refrigerant Performance in a Commercial Refrigerator

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi
In this study, we investigated the impact of the environmentally friendly R290 refrigerant, which has a higher Coefficient of Performance (COP), on the operating performance of the cooling system, as an alternative to the commonly used R404A refrigerant, which has a negative effect on global warming.
Turhan Saraç, Mahmut Ünaldı
openaire   +1 more source

Multi-scale evaluation of an R290 variable geometry ejector

Applied Thermal Engineering, 2021
Abstract Although representing a promising alternative to mechanical compressor driven systems, ejector refrigeration has not widely spread due to its limits due to the system operation's rigidity. Ejectors are fluid-dynamics controlled devices and because of their fixed geometry, operates at their best efficiency in a narrow range of operating ...
Besagni G., Cristiani N.
openaire   +2 more sources

R290 HP-Module for Electric Vehicles

SAE Technical Paper Series
<div class="section abstract"><div class="htmlview paragraph">Within this work a compact automotive heat pump module prototype with the natural refrigerant R290 (propane) is presented. R290 is non-toxic, has a low global warming potential (GWP) of 3, is environmentally friendly and is not affected by PFAS restrictions. Furthermore, R290 has
Alexej Pogorelov, Thorsten Reimers
openaire   +1 more source