Zobrazeno 1 - 10
of 363
pro vyhledávání: '"Natural refrigerants"'
Publikováno v:
Revista UIS Ingenierías, Vol 23, Iss 3 (2024)
The present study deals with the performance evaluation of four CO2 booster refrigeration system configurations: a conventional, a parallel compressor, an ejector-based, and an NH3/CO2 cascade configuration, under the ambient conditions of the city o
Externí odkaz:
https://doaj.org/article/45095266c4dd469fac66ed26ab88b8e6
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 158-163 (2023)
Transcritical CO2 (tc-CO2) refrigeration system is a pertinent option for refrigeration at low temperature, but it has high energy consumption with low coefficient of performance (COP) and exergetic efficiency. Thermodynamic properties of CO2 are fav
Externí odkaz:
https://doaj.org/article/c0f1594c5b2844699e9bbae3031f7232
Publikováno v:
Energy Storage and Saving, Vol 2, Iss 3, Pp 532-539 (2023)
Electrification of the heating sector is a major target of energy transition towards a more sustainable, efficient, and less polluted future. Heat pumps are considered more suitable than electrical heaters or fossil-fueled boilers; however, common re
Externí odkaz:
https://doaj.org/article/2bc353bff78945b7bf87a22ba45889e2
Autor:
Cosmin-Mihai Udroiu, Adrián Mota-Babiloni, Pau Giménez-Prades, Ángel Barragán-Cervera, Joaquín Navarro-Esbrí
Publikováno v:
Energy Conversion and Management: X, Vol 20, Iss , Pp 100446- (2023)
Carbon dioxide (CO2, R744) is the only refrigerant in the safest class by the ASHRAE 34 Standard in the group of natural refrigerants, with zero ozone depletion potential and a global warming potential of 1. It has been recently proposed for commerci
Externí odkaz:
https://doaj.org/article/5206decf3bf04a81977f046a57dfa634
Autor:
P. Ganesan, Trygve M. Eikevik
Publikováno v:
Energy Conversion and Management: X, Vol 20, Iss , Pp 100407- (2023)
There is a great demand for clean, high-temperature heating in industries. The present work demonstrates the modeling and analysis of a high-temperature heat pump (HTHP) using a two-stage cascade refrigeration system with newly developed refrigerant
Externí odkaz:
https://doaj.org/article/89075b95d8b449ddbcbcf1e7470dc9e6
Autor:
Alberta Carella, Annunziata D’Orazio
Publikováno v:
Energies, Vol 17, Iss 6, p 1478 (2024)
Due to environmental concerns, natural refrigerants and their use in refrigeration and air conditioning systems are receiving more attention from manufacturers, end users and the scientific community. The study of heat transfer and pressure drop is e
Externí odkaz:
https://doaj.org/article/ee780620e6c64c198285f9f3d2dfd27c
Akademický článek
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Due to their high global warming potential (GWP), fluorinated refrigerants are being replaced in many heat pump and refrigeration systems. Especially in small systems such as heat pump tumble dryers (HPTD), the replacement of the globally used workin
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A93913
https://tud.qucosa.de/api/qucosa%3A93913/attachment/ATT-0/
https://tud.qucosa.de/api/qucosa%3A93913/attachment/ATT-0/
Autor:
Muhammad Zahid Saeed, Luca Contiero, Stefanie Blust, Yosr Allouche, Armin Hafner, Trygve Magne Eikevik
Publikováno v:
Energies, Vol 16, Iss 21, p 7274 (2023)
During the last decade, many industrial and medical applications have shown a requirement for low-temperature-cooling usage (from −40 to −80 °C), which cannot be efficiently obtained via the conventional refrigeration systems usually employed fo
Externí odkaz:
https://doaj.org/article/17e31f16f5ca4f99acf6358215ab8008
Autor:
Cosmin-Mihai Udroiu, Adrián Mota-Babiloni, Pau Giménez-Prades, Ángel Barragán-Cervera, Joaquín Navarro-Esbrí
Publikováno v:
International Journal of Thermofluids, Vol 17, Iss , Pp 100287- (2023)
Research in ultra-low temperature refrigeration applications has intensified in recent years after the appearance of vaccines in response to the COVID-19 pandemic. There are few current technologies for this low-temperature range, with reduced energy
Externí odkaz:
https://doaj.org/article/cb109422c91f4e8897e84db9a430c99c