Results 21 to 30 of about 739 (173)

Energy, Exergy, and Environment Performance Evaluation of Cascade Refrigeration System with Natural Refrigerants

Hittite Journal of Science and Engineering, 2023
Cascade refrigeration systems are preferred in applications where low temperature cooling is required, such as in some special industrial and laboratory applications.
Meltem Koşan
doaj   +1 more source

Boiling Heat Transfer Coefficients of R290 in Tubes

Journal of Physics: Conference Series, 2023
Abstract In 2016, Montreal Protocol Kigali Amendment stipulated that developed countries should reduce the consumption and production of HFCs from 2019 and that developing countries should start the reduction in 2029. New alternative refrigerants should have lower GWP to reduce negative effects on the environment.
openaire   +1 more source

Thermodynamic screening of alternative refrigerants for R290 and R600a

Results in Engineering, 2020
Due to Regulation EU 517/2014 (F-Gas), the use of refrigerants with GWP higher than 150 was limited from 2015 on in small capacity refrigeration systems in Europe. Although refrigerants that dominate are R600a and R290 nowadays, which are classified as A3 by ASHRAE 34, literature points out that some refrigerant mixtures exist that could offer benefits
Daniel Calleja-Anta, Laura Nebot-Andrés, Jesús Catalán-Gil, Daniel Sánchez, Ramón Cabello, Rodrigo Llopis   +5 more
openaire   +2 more sources

Energy Performance Analysis of a Solar Refrigerator Using Ecological Refrigerants

Journal of Sustainable Development of Energy, Water and Environment Systems, 2023
The development of sustainable energy technologies must be a priority given the rising global energy demand and global warming gases emission. In this work, the energy evaluation of a small-capacity direct-current refrigerator with internal heat exchange
Carlos Amaris, Fabian Barbosa, Milen Balbis   +2 more
doaj   +1 more source

A Detailed Review of Colburn and Friction Factors for Various Types of Fins Used in Compact Plate‐Fin Heat Exchangers

Heat Transfer, Volume 55, Issue 6, Page 3495-3522, September 2026.
ABSTRACT Compact plate‐fin heat exchangers (PFHEs) are commonly utilized in diverse industries, including aerospace, automotive, processing, and space. Various fin configurations, such as Plain fins, Wavy fins, Lance and Offset fins (OSFs), Perforated fins, louvered fins, and pin fins, are employed in compact heat exchangers (CHEs).
Chennu Ranganayakulu
wiley   +1 more source

Assessment of the performance of ultralow‐GWP refrigerants in a two‐stage heat pump system using simulation and MCMD

Environmental Progress &Sustainable Energy, Volume 45, Issue 4, July/August 2026.
Abstract The Kigali Amendment's mandate to phase down high‐GWP refrigerants highlights the urgent need for sustainable alternatives in cold climate heat pumps, which are critical for delivering efficient heating in severely cold regions. This study evaluates ultralow‐GWP refrigerants—R‐290, R‐152a, R‐161, R‐1234yf, and R‐1234ze(E)—for application in a ...
Kuanrong Qiu, Martin Thomas
wiley   +1 more source

Investigation of modified ejector cycle on residential air conditioner with environmentally benign r

Journal of Thermal Engineering, 2020
This paper investigates a modified ejector cycle (MEC) to further enhance the COP improvement of residential air conditioner (A/C), as compared to the standard ejector cycle (SEC).
Kasni SUMERU, Mohamad Firdaus SUKRİ, Pratikto PRATİKTO, Apip BADARUDİN   +3 more
doaj   +1 more source

Experimental Study on the Combustion and Explosion Characteristics of Tributyl Phosphate and Kerosene Mixtures at Different Initial Pressures in High‐Temperature Environments

Energy Science &Engineering, Volume 14, Issue 7, Page 3195-3210, July 2026.
The explosion hazard of TBP and kerosene mixed vapor in the nuclear fuel reprocessing process is studied. The results enrich the explosion characteristics and explosion limits of TBP‐kerosene, and provide reference value and basis for the safety setting of the operation process and operating environment of nuclear fuel reprocessing plants ABSTRACT As ...
Pincong Wu, Xijing Li, Jing Luo, Yuchen Ouyang, Yuanzhi Li, Longfei Hou, Pengliang Li   +6 more
wiley   +1 more source

Experimental Analysis of Alternate Refrigerant Mixtures in Refrigeration System [PDF]

E3S Web of Conferences
This study focuses on conducting experimental analyses to assess the impact of alternative refrigerant blends within a vapor compression refrigeration system, with the aim of replacing the existing R134a refrigerant.
R Ragavendiran, A Gowrishankar, Hussaini M Mohammadha, G Ravivarman, K N Gunasekaran, Uday Kiran Kasi, R Girimurugan   +6 more
doaj   +1 more source

Genetic diversity and population structure of jute mallow (Corchorus olitorius L.) global collection to guide conservation and breeding

The Plant Genome, Volume 19, Issue 2, June 2026.
Abstract Understanding the genome‐wide diversity of jute mallow (Corchorus olitorius L.) is crucial for unlocking the potential of global genebank collections, enabling the discovery and use of traits that support climate resilience, improve nutrition, and increase productivity.
Abdul J. Shango, Emmanuel O. Omondi, Sognigbé N'Danikou, Dèdéou A. Tchokponhoué, M. Eric Schranz, Bodovololona Rabary, Mujuni Sospeter Kabululu, Thembinkosi Gumedze, Enoch G. Achigan‐Dako, Pavithravani Venkataramana, Mashamba L. Philipo, Maarten van Zonneveld   +11 more
wiley   +1 more source