International journal of refrigeration, Vol. 36 N° 4. International journal of refrigeration - Juin 2013
| Titre : | International journal of refrigeration, Vol. 36 N° 4. International journal of refrigeration - Juin 2013 |
| Type de document : | Bulletin |
| Paru le : | 04/09/2013 |
Dépouillements
Article : texte imprimé
C.E.L. Nóbrega, Auteur ;
L.A. Sphaier, Auteur
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A desiccant-assisted Brayton cooling cycle as an option for controlling humidity in air refrigeration cycles has been proposed. The modified cycle integrates a desiccant cooling cycle into an ordinary reversed Brayton cycle, using the heat rejec[...]
Article : texte imprimé
Simone Mancin, Auteur ;
Claudio Zilio, Auteur ;
Giulia Righetti, Auteur
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This paper reports the experimental analysis of a mini Vapor Cycle System (VCS) for electronic thermal management in avionic applications. The water cooled miniature scale refrigeration system uses R134a as working fluid and implements a new con[...]
Article : texte imprimé
Performance of virtually non-flammable azeotropic HFO1234yf/HFC134a mixture for HFC134a applications
Yohan, Lee, Auteur ;
Dong Gyu Kang, Auteur ;
Dongsoo Jung, Auteur
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In this study, ‘drop-in’ performance of HFC134a, HFO1234yf and HFO1234yf/HFC134a mixture at three compositions of 5%, 10%, and 15% HFC134a is measured in a heat pump bench tester under summer and winter conditions. Test results show that the COP[...]
Article : texte imprimé
D. Colbourne, Auteur ;
L. Espersen, Auteur
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This study addresses the flammability risk of hydrocarbon (HC) refrigerants within horizontal type ice cream cabinets (ICC). Quantitative risk assessment (QRA) is used to estimate the likelihood of ignition of leaked refrigerant and severity of [...]
Article : texte imprimé
Neal, Lawrence, Auteur ;
Stefan Elbel, Auteur
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This paper compares the standard two-phase ejector refrigeration cycle with a liquid–vapor separator to two alternate, less commonly considered two-phase ejector refrigeration cycles as well as to a conventional cycle with an expansion valve. An[...]
Article : texte imprimé
Mahmood Mastani Joybari, Auteur ;
Mohammad Sadegh Hatamipour, Auteur ;
Amir Rahimi, Auteur
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Exergy analysis was applied to investigate the performance of a domestic refrigerator originally manufactured to use 145 g of R134a. It was found that the highest exergy destruction occurred in the compressor followed by the condenser, capillary[...]
Article : texte imprimé
Bilal Ahmed Qureshi, Auteur ;
Syed M. Zubair, Auteur
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In this paper, thermoeconomic considerations are given to heat exchanger inventory allocation in vapor compression cycles with mechanical subcooling. Investigation is made with respect to constant work rate, heat rejection and cooling rates as w[...]
Article : texte imprimé
M. Hegar, Auteur ;
M. Kolda, Auteur ;
M. Kopecka, Auteur
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This paper presents a test method for determination of energy consumption of bus HVAC unit. The energy consumption corresponds to a bus engine fuel consumption increase during the HVAC unit operation period. The HVAC unit energy consumption is d[...]
Article : texte imprimé
Hanfei Tuo, Auteur ;
Pega Hrnjak, Auteur
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This paper presents the phenomenon of periodic reverse flow and associated boiling fluctuation found in experiments with a parallel microchannel evaporator used in an R134a air conditioning system. A simultaneous flow visualizations and measurem[...]
Article : texte imprimé
Changhyun Baek, Auteur ;
Jaehyeok Heo, Auteur ;
Jongho Jung, Auteur
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The objective of this study is to investigate the control methods of the gas-cooler pressure in a CO2 heat pump. The cooling performance of the CO2 heat pump was measured by varying the refrigerant charge amount, EEV opening, compressor frequenc[...]
Article : texte imprimé
Naoto Haruki, Auteur ;
Akihiko Horibe, Auteur
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Recently, ice slurry has attracted much attention due to its high energy efficiency and heat exchange ability. In this study, the flow and heat transfer characteristics of ice slurry in helically-coiled pipes of a dynamic ice-thermal storage sys[...]
Article : texte imprimé
Salem Jerbi, Auteur ;
Anthony Delahaye, Auteur ;
Jérémy Oignet, Auteur
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The aim of this paper is to present the rheological properties of CO2 hydrate slurry for a use as secondary fluids in refrigeration systems. A set-up composed of a stirred tank reactor and a circulation loop was used to study CO2 hydrate slurry [...]
Article : texte imprimé
Koji Matsumoto, Auteur ;
Yoshito Igarashi, Auteur ;
Daisuke Shirai, Auteur
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In the ice formation process, supercooling, which results in COP degradation of the ice formation system, is avoidable. Thus, controlling supercooling dissolution would provide numerous benefits to the ice formation system. In order to control s[...]
Article : texte imprimé
A. López-Navarro, Auteur ;
J. Biosca-Taronger, Auteur ;
B. Torregrosa-Jaime, Auteur
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This paper presents the results of an experimental installation with an internal melt-ice-on-coil tank which has a total capacity of 172 kWh. The aim of this work is to analyse the freezing process in a tank with counter-current spiral-shaped co[...]
Article : texte imprimé
C. Cogné, Auteur ;
P.U. Nguyen, Auteur ;
J.L. Lanoisellé, Auteur
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A numerical simulation using COMSOL®, a commercial software, has been developed to model heat and mass transfer during vacuum freezing by evaporation of a single puree droplet. The simulations predict local water content, temperature and mass lo[...]
Article : texte imprimé
Ehsan Sanjari, Auteur ;
Mehrdad Honarmand, Auteur ;
Hamidreza Badihi, Auteur
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The examination of the available vapor pressure data in the case of the methane, ethane, propane and butane halogenated refrigerants, allowed the derivation and recommendation of standard equations for this property. In this study a new universa[...]
Article : texte imprimé
This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester-based aluminum oxide (Al2O3) nanoparticle dispersion (nanolubricant) at atmospheric pressure over the temperature range 288 K–318 K. Two Al2O3 par[...]
Article : texte imprimé
Ryo Akasaka, Auteur ;
Katsuyuki Tanaka, Auteur ;
Yukihiro Higashi, Auteur
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The vapor–liquid coexistence curves near the critical point of the binary mixture of 2,3,3,3-tetrafluoropropene (R-1234yf) + difluoromethane (R-32) were measured by means of the visual observation of meniscus disappearance. Eleven, eighteen, and[...]
Article : texte imprimé
F.N. Shamsetdinov, Auteur ;
Z. I. Zaripov, Auteur ;
I. M. Abdulagatov, Auteur
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The thermal conductivity of binary ammonia + water mixtures was measured over the temperature range from 278 K to 356 K and at pressures to 20 MPa using the steady-state hot-wire method. Measurements were made for ten compositions over the entir[...]
Article : texte imprimé
Article : texte imprimé
Wen-Ye Lin, Auteur ;
Xiao-Hua Wu, Auteur ;
Jun-Ling Yang, Auteur
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The thermocompressor is capable to utilize thermal energy directly to product pressure wave for pulse tube refrigerator. To research its performance, an experimental system of a thermocompressor with an annular gap regenerator and its correspond[...]
Article : texte imprimé
J. Romero Gómez, Auteur ;
R. Ferreiro Garcia, Auteur ;
J. Carbia Carril, Auteur
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In this paper, a reciprocating magnetic refrigeration prototype (MR) with a novel and simple design is presented using permanent magnets for operation at room temperature. The design, installation, operation and preliminary results are reported.[...]
Article : texte imprimé
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