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Cogeneration for small users: case studies for Brazilian tertiary sector
(1995-12-01)
In this paper we present technical and economic studies of cogeneration systems utilizing combustion engines and gas turbines, applied in two establishments of the tertiary sector, regarding Brazilian conditions (according ...
Ergonomics in clothing: Importance of thermal comfort in a typical Brazilian refrigerator of beef industry
(2017-01-01)
Human exposure to uncomfortable temperatures has been of concern in the last decade, since in these conditions the frequency of occupational accidents and diseases increases in most cases. This study discusses and determines ...
Variable speed refrigeration system with HPF input rectifier stage
(2008-09-22)
This paper is based on the analysis and implementation of a new drive system applied to refrigeration systems, complying with the restrictions imposed by the IEC standards (Harmonic/Flicker/EMI-Electromagnetic Interference ...
INFLUENCE of THE EVAPORATOR POSITION IN STATIC DOMESTIC REFRIGERATORS
(Int Inst Refrigeration, 2011-01-01)
The temperature and velocity distributions of the air inside the cabinet of domestic refrigerators affect the quality of food products. If the consumer knows the location of warm and cold zones in the refrigerator, the ...
A novel HPF voltage source rectifier for variable speed refrigeration systems
(IEEE, 2006-01-01)
A novel single-phase voltage source rectifier capable to achieve High-Power-Factor (HPF) for variable speed refrigeration system application, is proposed in this paper. The proposed system is composed by a single-phase ...
A techno-economic analysis for MCFC cogeneration system
(2003-12-01)
In this paper, a methodology for the study of a fuel cell cogeneration system and applied to a university campus is developed. The cogeneration system consists of a molten carbonate fuel cell associated to an absorption ...
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves
(2014-01-01)
In refrigeration compressors, the suction and discharge valves are responsible for the retention of the refrigerant from the suction chamber to the cylinder and passage from the cylinder to the discharge chamber. As the ...
EVALUATION OF AN IMMERSED BOUNDARY METHOD FOR SOLVING THE FLUID STRUCTURE INTERACTION PROBLEM IN REFRIGERATION COMPRESSOR VALVES
(Int Center Numerical Methods Engineering, 2014-01-01)
In refrigeration compressors, the suction and discharge valves are responsible for the retention of the refrigerant from the suction chamber to the cylinder and passage from the cylinder to the discharge chamber. As the ...
A two phase flow nonlinear parameter estimation for capillary tube-suction line heat exchanger
(2001-12-01)
Here we present two-phase flow nonlinear parameter estimation for HFC's flow through capillary tube-suction line heat exchangers, commonly used as expansion devices in small refrigeration systems. The simplifying assumptions ...
Thermoeconomic Analysis Of A Cogeneration System Of Compression Ignition Engine And Absorption Refrigeration Machine
(American Society of Mechanical Engineers (ASME), 2002)