Results 81 to 90 of about 2,882 (203)

Dynamic Performance Comparison of R134a and R1234yf Refrigerants for a Vapor Compression Refrigeration Cycle

Hittite Journal of Science and Engineering, 2018
M achines like air conditioners and refrigerators, which cause significant energy consumption in countries around the world, are widely used in industry and residences.
Mert Sinan Turgut, Mustafa Turhan Çoban
doaj   +1 more source

Experimental analysis of R-450A and R-513A as replacements of R-134a and R-507A in a medium temperature commercial refrigeration system [PDF]

, 2017
This work presents the experimental evaluation of R-513A (GWP = 573) and R-450A (GWP = 547) as R-134a (GWP = 1301) drop-in replacements and as R-507A (GWP = 3987) retrofits in a commercial direct expansion refrigeration system for medium temperature ...
Cabello López, Ramón, Catalán-Gil, Jesús, Llopis, Rodrigo, Nebot-Andres, Laura, Sánchez García-Vacas, Daniel   +4 more
core   +1 more source

Flammability Comparison and Flame Retardancy Research on R32 and R1234yf

Zhileng xuebao, 2021
Halogenated alkanes and halogenated olefins, especially fluorine substitutes, are currently the most widely used synthetic refrigerants. With the implementation of a series of increasingly stringent environmental regulations, most optional fluorinated ...
Shi Yuqi, Yang Zhao, L
doaj  

Обґрунтування застосування робочих речовин «нового покоління» у випарниках холодильних і теплонасосних установок

Holodilʹnaâ Tehnika i Tehnologiâ, 2019
Наведено енергетичне та екологічне обґрунтування застосування озонобезпечних холодоагентів R1234yf, R513a і R448a в холодильних і теплонасосних установках.
К. М. Макєєва, О. О. Книш
doaj   +1 more source

Buhar Sıkıştırmalı Soğutma Çevriminde R134a Yerine R1234yf ve R1234yf/Al2O3 ile R1234yf/CNTs Nanosoğutucu Akışkanların Kullanımının Termodinamiğin I. ve II. Kanunları Bakımından Teorik Olarak İncelenmesi

Gazi Journal of Engineering Sciences, 2021
BİLEN, KEMAL, DAĞIDIR, KAYHAN, ARCAKLIOĞLU, EROL   +2 more
openaire   +2 more sources

Measurement of Kinematic Viscosity of Refrigeration Oil and R1234yf Mixture [PDF]

, 2021
Refrigerant dissolves in refrigeration oil which is used to lubricate the compressor. Because the viscosity of the oil in which the refrigerant is dissolved is significantly reduced, the rate of the reduction is important information to select a proper oil.
Morotomi, Shun, Kariya, Keishi, Miyara, Akio   +2 more
openaire  

Research on the Flammability Limits of R1234yf/R290 and R1234ze(E)/R290 Mixtures

Zhileng xuebao
Propane (R290) is a potential refrigerant substitute for household air conditioners. However, its flammability limits its application. In this study, the flammability limits of R290, 2,3,3,3-tetrafluoropropene (R1234yf), trans-1,3,3,3-tetrafluoropropene (
Shen Jun, Huang Yujie, Zhong Quan, Shi Hechun, Li Huajie, Zhao Huan   +5 more
doaj  

Biological Performance of Titanium Surfaces with Different Hydrophilic and Nanotopographical Features. [PDF]

Materials (Basel), 2023
Illing B, Mohammadnejad L, Theurer A, Schultheiss J, Kimmerle-Mueller E, Rupp F, Krajewski S.   +6 more
europepmc   +1 more source

New Eco-gas mixtures for the Extreme Energy Events MRPCs: results and plans

, 2019
The Extreme Energy Events observatory is an extended muon telescope array, covering more than 10 degrees both in latitude and longitude. Its 59 muon telescopes are equipped with tracking detectors based on Multigap Resistive Plate Chamber technology with
Abbrescia, M., Avanzini, C., Baldini, L., Batignani, G., Battaglieri, M., Boi, S., Bossini, E., Carnesecchi, F., Chiavassa, A., Cicalo, C., Cifarelli, L., Coccetti, F., Coccia, E., Corvaglia, A., De Gruttola, D., De Pasquale, S., Fabbri, F. L., Ferroli, L. Baldini, Frolov, V., Galante, L., Galeotti, P., Garbini, M., Gemme, G., Gnesi, I., Grazzi, S., Gustavino, C., Hatzifotiadou, D., La Rocca, P., Mandaglio, G., Maron, G., Mazziotta, M. N., Miozzi, S., Nania, R., Noferini, F., Nozzoli, F., Palmonari, F., Panareo, M., Panetta, M. P., Paoletti, R., Park, W., Pellegrino, C., Perasso, L., Pilo, F., Piragino, G., Pisano, S., Riggi, F., Righini, G. C., Ripoli, C., Rizzi, M., Rodriguez, O. Maragoto, Sartorelli, G., Scapparone, E., Schioppa, M., Scribano, A., Selvi, M., Serci, S., Squarcia, S., Taiuti, M., Terreni, G., Trifirò, A., Trimarchi, M., Vistoli, M. C., Votano, L., Williams, M. C. S., Zheng, L., Zichichi, A., Zuyeuski, R.   +66 more
core   +1 more source

Energy assessment of an R134a refrigeration plant upgraded to an indirect system using R152a and R1234ze(E) as refrigerants [PDF]

, 2018
In this work the experimental results obtained from a direct expansion refrigerating plant converted into an indirect plant, are presented and discussed in terms of energy consumption for a commercial refrigerating unit plugged to a medium temperature ...
Cabello López, Ramón, Catalán-Gil, Jesús, Llopis, Rodrigo, Nebot-Andres, Laura, Sánchez García-Vacas, Daniel   +4 more
core   +1 more source