Results 131 to 140 of about 10,829 (309)

Complex Approach to the Conversion of Existing Refrigeration Systems to A2L Group Refrigerants

Journal of Mechanical Engineering
Modern requirements for refrigeration equipment include the cessation of the use of systems with refrigerants that destroy the ozone layer, as well as a gradual reduction in the use of refrigerants with a high impact on global warming.
Serhii M. Molskyi, Oleksandr S. Molskyi, Anna L. Vorontsova   +2 more
doaj   +1 more source

An experimental study of a refrigerating plant when replacing R22 with HFCs refrigerants

, 2011
This paper presents the results of an experimental analysis comparing the performance of a vapour compression refrigerating unit operating with R22, and its performance in comparison to some HFCs fluids, substituting the former according to reg. n. 2037/2000.
LA ROCCA, Vincenzo, MESSINEO,A, PANNO, Domenico   +2 more
openaire   +1 more source

Affinity Peptides With pH Sensitivity for the Enrichment of CD38+ Cells

Biotechnology and Bioengineering, EarlyView.
ABSTRACT The selective enrichment of cell populations based on surface markers is critical for the advancement of gene and cell therapies. Current antibody‐based cell isolation methods, such as fluorescence‐ and magnetic‐activated cell sorting (FACS and MACS), offer high specificity but are limited by scalability, cost, and potential adverse effects on
Gabrielle Rusch, Mickael Meyer, I. Mohamed Irfan, Carson Huber, Joseph Burclaff, Scott T. Magness, Stefano Menegatti, Michael Daniele   +7 more
wiley   +1 more source

Comparative Research on Performances of R516A and R134a in Water-Cooled Chillers

Zhileng xuebao
R516A is one of the new substitutes for R134a refrigerant in water-cooled chillers. The COP (coefficient of performance) and discharge temperatures of R516A and R134a are compared through a single-stage vapor compression cycle. Under nominal and variable
Li Xiongya, Hua Xue, Guo Xiaolin
doaj  

Multifunctional hyaluronic acid hydrogel integrating exosome‐encapsulating gelatin microspheres accelerates skeletal muscle regeneration via TGF‐β1 activation and enhanced myogenic cell viability

BMEMat, EarlyView.
Schematic illustration of preparation of injectable H/G@Co@miR‐206 hydrogel for efficient skeletal muscle regeneration in cardiotoxin‐induced skeletal muscle injury SD rat model. Abstract The effective treatment of acute skeletal muscle injuries remains challenging, necessitating therapeutic strategies that concurrently reestablish vascular perfusion ...
Zhengzhe Han, Zongyue Li, Ang Li, Zheng Jiang, Saiyu Shi, Zhipeng Wang, Jishizhan Chen, Yun Qian, Yuanyang Gu, Xianyou Zheng   +9 more
wiley   +1 more source

Barriers and Enablers of Circular Economy in Electrical and Electronic Equipment: A Systematic Literature Review

Business Strategy and the Environment, EarlyView.
ABSTRACT Rapid technological change, shorter lifecycles and rising demand for electrical and electronic equipment (EEE) are increasing waste electrical and electronic equipment (WEEE) and emphasise the need for a circular economy. This paper identifies barriers and enablers of the circular transition in EEE and outlines interventions.
Aya Abdelmeguid, Lucia Corsini
wiley   +1 more source

Study on Refrigerant Replacement for Cascade Refrigeration Systems in Small and Medium-Scale Cold Store

Zhileng xuebao
Small- and medium-scale cold stores， which are widely used， play important roles in daily life. The low-carbon operation of the refrigeration units used in cold stores is of great significance.
He Yongning, Wang Su′ao, Zhao Xihang, Qiu Mingzhao, Cao Wenliang, Zhang Zhenya, Xing Linfen   +6 more
doaj  

Towards sustainable HVAC systems: Comparative analysis of R22 and R290 with finned-tube and microchannel condensers

Case Studies in Thermal Engineering
Energy efficiency and environmental sustainability are critical in the transformation of modern air conditioning systems, especially in light of global climate goals and the phasing out of high-GWP refrigerants.
Mohammed Sadhikh, K.R. Abhijith, B.B. Nandakishor, K. Ravisankar, Sayyan Shereef, Siddhaanth Sudhir   +5 more
doaj   +1 more source

Hydrocarbons as Alternate Refrigerants to Replace R134a in Domestic Refrigerators

Revue des composites et des matériaux avancés, 2019
Parashurama Siddegowda, Govindegowda Sannappagowda, Vaibhav Jain, Satheesh Gowda   +3 more
openaire   +2 more sources

ENERGY AND ECONOMIC IMPROVEMENT OF DOMESTIC REFRIGERATOR ONLY REPLACING ORIGINAL R12 REFRIGERANT BY OTHER ECOLOGICAL REFRIGERANT - EXPERIMENTAL ANALYSIS

, 2014
Se demuestra de forma experimental la mejora energética y económica de una refrigeradora tipo doméstica, a partir de solamente sustituir su refrigerante original R-12 (CFC de característica contaminante y degradante de la Capa de Ozono), por otro refrigerante del tipo ecológico (HFC) como el R-134a.
Gonzales Chávez, Salome, Rosas Martínez, Néstor   +1 more
openaire   +1 more source