Results 11 to 20 of about 13,306 (305)

Simulation study on performance of a dual-source hybrid heat pump unit with alternative refrigerants

Energy and Built Environment, 2020
To solve the problems of single heat source heat pump systems in severe cold regions, a dual-source hybrid heat pump unit (DSHHPU) is proposed. The mathematical models of the DSHHPU when charging R134a or its alternative refrigerants R32, R290 and R600a ...
Chenguang Bai, Zongwei Han, Haotian Wei, Xiaomei Ju, Xinwei Meng, Qi Fu   +5 more
doaj   +3 more sources

Drop-In Replacement of R134a in a Household Refrigerator with Low-GWP Refrigerants R513A, R516A, and R1234ze(E)

Energies, 2023
This study proposes the experimental evaluation of alternative refrigerants with low global warming potentials (GWPs) such as R1234ze(E), R513A, and the mixture R516A as a drop-in replacement for R134a in a domestic refrigerator with a volumetric ...
Juan M. Belman-Flores, Yonathan Heredia-Aricapa, Juan J. García-Pabón, Vicente Pérez-García, César G. Pérez-Reguera   +4 more
doaj   +1 more source

Multi-objective optimization of a novel reversible High-Temperature Heat Pump-Organic Rankine Cycle (HTHP-ORC) for industrial low-grade waste heat recovery [PDF]

, 2019
Nowadays, a high amount of industrial thermal energy is still lost due to the lack of competitive solutions for energy revalorization. Facing this challenge, this paper presents a novel technology, based on a reversible High-Temperature Heat Pump (HTHP ...
Amat-Albuixech, Marta, Mateu-Royo, Carlos, Moles, Fran, Mota-Babiloni, Adrián, Navarro-Esbrí, Joaquín, Peris, Bernardo   +5 more
core   +1 more source

Super-heavy fermion material as metallic refrigerant for adiabatic demagnetization cooling [PDF]

, 2012
Low-temperature refrigeration is of crucial importance in fundamental research of condensed matter physics, as the investigations of fascinating quantum phenomena, such as superconductivity, superfluidity and quantum criticality, often require ...
Abascal, Adak, Adak, Adak, Adams, Akyürek Şahin, Alföldy, Aliquot, Aliquot, Alison E. 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Saraçoğlu, Savay-Guerraz, Scappaticcio, Schalles, Scheibelreiter, Scheid, Schellenberg, Schmalz, Schmidt, Schmidt, Schmidt, Schmidt, Schmitz, Schuler, Schuler, Schuler, Schuler, Schäfer, Segre, Sharankov, Sharankov, Sharankov, Silvestrini, Silvestrini, Sims-Williams, Sironen, Slater, Smith, Soler, Solin, Solin, Solin, Solin, Solin, Solin, Solin, Solin, Solin, Spadoni, Speidel, Speidel, Speidel, Spickermann, Staab, Stewart, Stopponi, Stylow, Sänger-Böhm, Tabernee, Takmer, Tanriver, Tansey, Tantillo, Tataki, Thomasson, Thonemann, Thonemann, Thornton, Toalster, Tomlin, Tomlin, Tomlin, Tomlin, Traverso, Triantafillis, Tuck, Tzifopoulos, Varone, Ventura Villanueva, Vergone, Vigourt, Vipard, Virlouvet, Vitiello, von Saldern, von Saldern, Vuilleumier Laurens, Waelkens, Wallace, Wallace, Wallace, Wallace-Hadrill, Wannack, Weber, Weber, Weiss, Weiss, Weiss, Weiss, Wojciech, Wolf, Wolff, Wright, Wörrle, Wörrle, Yon, Yon, Youni, Zahariade, Zizza, Zoumbaki, Zwalve, Çetin Şahin, Łajtar, Łajtar, Şahin, Şahin, Šašel Kos, Šašel Kos   +539 more
core   +5 more sources

The Analysis of Next-Generation Refrigerants in Terms of Energy, Exergy, and LCCP Perspective

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2023
In this study, commonly used hydrofluorocarbon (HFC)-based refrigerants R404A and R410A, as well as hydrofluoroolefin (HFO)-based environmentally friendly next-generation refrigerant R1234yf with a low global warming potential (GWP), were analyzed in ...
Mehmet Onur Karaagac, Mustafa Aktaş, Merve Özer, Alper Ergün   +3 more
doaj   +1 more source

Alternative refrigerants and refrigeration cycles for domestic refrigerators [PDF]

, 1992
This project initially focused on using nonazeotropic refrigerant mixtures (NARMs) in a two-evaporator refrigerator-freezer design using two stages of liquid refrigerant subcooling. This concept was proposed and tested in 1975. The work suggested that the concept was 20% more efficient than the conventional one-evaporator refrigerator-freezer (RF ...
Sand, J. R., Rice, C. L., Vineyard, E. A.   +2 more
openaire   +2 more sources

Alternative refrigerants [PDF]

Nature, 1976
JOHN W. BIRKS, THOMAS J. LECK
  +9 more sources

The name of the article is Experimental researches of refrigeration machines retrofit to alternative ozone friendly mixed refrigerants power efficiency

Юг России: экология, развитие, 2015
The problems of refrigeration equipment transfer from ozone destroying refrigerant R22 to alternative mixed refrigerants are considered in the article. The exergy method is chosen from all possible ways of energy factors comparison.
A. Y. Kuzmin, A. V. Bukin
doaj   +1 more source

Development of a dynamic model for ice-on-coil external melt storage systems [PDF]

, 2019
Ice storage systems are commonly used to balance the intermittency of renewable energy and decrease the peak load by switching to off-peak hours. An adequate model is necessary to predict the behaviour of these systems.
Beyne, Wim, De Paepe, Michel, De Vos, Michiel, Monteyne, Hugo, Nonneman, Jasper   +4 more
core   +1 more source

Energy and Thermal Conductivity Assessment of Dimethyl-Ether and its Azeotropic Mixtures as Alternative Low Global Warming Potential Refrigerants in a Refrigeration System

Environmental and Climate Technologies, 2021
Substituting Hydrofluorocarbons with natural refrigerants in domestic refrigerators will significantly reduce the direct contributions of fluorinated gases to global warming which will be of great environmental benefit. In this study, the performances of
Bolaji Bukola Olalekan, Oyelaran Olatunde Ajani, Abiala Israel Olutunji, Ogundana Tunde Oluwatoyin, Amosun Semiu Taiwo   +4 more
doaj   +1 more source