Results 121 to 130 of about 1,974 (165)
Some of the next articles are maybe not open access.
Investigation on the fractional nature of a refrigeration evaporator
Applied Thermal Engineering, 2020Abstract The frequency response of an evaporator for commercial refrigeration is investigated to develop a control-oriented model which balances simplicity with accuracy. The dynamics of such devices is highly nonlinear; the response curve was experimentally identified around an operating point by recording the output of the system for several ...
Casagrande D. +4 more
openaire +2 more sources
Azeotropy in the natural and synthetic refrigerant mixtures
International Journal of Refrigeration, 2007Abstract A novel approach for the prediction of azeotrope formation in a mixture that does not require vapour–liquid equilibrium calculations is developed. The method employs neural networks and global phase diagram methodologies to correlate azeotropic data for binary mixtures based only on critical properties and acentric factor of the individual ...
Sergey Artemenko, Victor Mazur
openaire +1 more source
Application of Natural Refrigerants in Refrigeration Plants
Chemical and Petroleum Engineering, 2023M. S. Talyzin, V. G. Ponomarev
openaire +1 more source
Application of Natural Zeolites in Refrigeration
1985Publisher Summary Silica gels, activated alumina, and synthetic zeolites are commonly used in the refrigeration industry mainly for the purpose of desiccation of halocarbon refrigerants. However, natural zeolites cannot be used in refrigeration systems as mined and crushed.
openaire +1 more source
Equations for Thermal Conductivity of Natural Refrigerants
International Journal of Thermophysics, 2001Experimental results for the thermal conductivity of ammonia, propane, butane, isobutane, and propylene are reviewed, with special attention given to the liquid phase. New equations for the thermal conductivity of these five substances applicable for practical use over wide ranges of temperature and pressure including the critical region are proposed ...
J. Yata, M. Hori, Y. Isono, Y. Ueda
openaire +1 more source
2020
Refrigeration system holds an important role in many commercial and household applications The optimal utilization of energy saving technologies in commercial and household refrigeration systems is a key issue for the rational use of energy resources. The scope of this study is an experimantal analysis of the small-scale refrigeration system efficiency
Mykhailo Khmelniuk +2 more
openaire +1 more source
Refrigeration system holds an important role in many commercial and household applications The optimal utilization of energy saving technologies in commercial and household refrigeration systems is a key issue for the rational use of energy resources. The scope of this study is an experimantal analysis of the small-scale refrigeration system efficiency
Mykhailo Khmelniuk +2 more
openaire +1 more source
Performance characteristics of natural-refrigerants- based ejector expansion refrigeration cycles
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2009The thermodynamic analyses and comparison of three natural-refrigerants-based vapour compression refrigeration cycles (ammonia, isobutane, and propane) are presented in this article using a constant pressure mixing ejector as an expansion device. Optimization of the area ratio of the ejector is done based on maximum cooling coefficient of performance ...
openaire +1 more source
Developing Refrigeration Equipment with Natural Refrigerants
Marine Engineering, 2021openaire +1 more source
Natural Working Fluids in Transport Refrigeration
2022There are currently many drivers pushing the transport refrigerationsector towards more sustainable refrigeration systems, being at the sametime more efficient and adopting natural working fluids (NWF) in placeof synthetics. Due to the variety of involved means of transport, on thedifferent and challenging boundary conditions and safety requirementsand
openaire +1 more source
International Journal of Exergy, 2012
Irreversibility analyses of R290, R717, R718 and R744 are carried out in a compression refrigeration cycle. The effects of evaporator temperature, condenser temperature and isentropic efficiency on the irreversibility of the cycle and its basic components are investigated and exergy analysis of the cycle is also presented as a function of evaporator ...
openaire +1 more source
Irreversibility analyses of R290, R717, R718 and R744 are carried out in a compression refrigeration cycle. The effects of evaporator temperature, condenser temperature and isentropic efficiency on the irreversibility of the cycle and its basic components are investigated and exergy analysis of the cycle is also presented as a function of evaporator ...
openaire +1 more source