Results 131 to 140 of about 423 (182)

Multi-effect absorption chillers

International Journal of Refrigeration, 1993
Abstract Multi-effect absorption heat pump cycles are promising to yield cooling performances which far exceed the performance of single-stage cycles. In this paper, several types of cycles are analysed. For this purpose, the respective multi-effect cycle is decomposed into elementary building blocks of single-stage absorption cycles with known ...
F Ziegler, R Kahn, F Summerer, G Alefeld
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Solar Fired, Compressor Assisted Absorption Chillers

Solar Energy, 2002
This paper presents the results of a thermodynamic and heat transfer analysis of solar fired, compressor assisted absorption chillers. The objectives are to determine and evaluate the feasibility of using vapor compressors to lower the operating temperature of the primary generator, simplify the maintenance and reduce the cost of solar/waste heat ...
James B. Bergquam, Joseph M. Brezner
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Absorption chillers applied to CHP systems

Building Services Engineering Research and Technology, 1995
The parameters that should be considered at the design stage of a combined heat and power (CHP) project have been determined for situations when absorption refrigeration is to be used. Single and double stage chillers are considered together with system features such as hot water, steam or heat recovery driven, in terms of the hot temperature heat ...
R. Tozer, R. James
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Absorption Chillers and Heat Pumps

2016
Introduction Heat Pumps Heat-Driven Heat Pumps Description of Current Absorption Products Outlook for Absorption Technology Absorption Cycle Fundamentals Carnot Cycles Absorption Heat Pump, Type I Absorption Heat Transformer, Type II Absorption Heat Pump as Combination of Rankine Cycles Reversible Analysis with Variable Temperatures Irreversibilities ...
Keith E. Herold, Reinhard Radermacher, Sanford A. Klein   +2 more
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Performance of a Residential-Sized GAX Absorption Chiller

Journal of Energy Resources Technology, 1998
This research effort involved experimentally testing an advanced-cycle, ammonia-water absorption chiller with a cooling capacity of 17.6 kW (5 refrigeration tons (RT)). The system was a generator-absorber heat exchange (GAX) cycle and was sized for residential and light commercial use, where very little absorption equipment is currently used.
Douglas K. Priedeman, Michael A. Garrabrant, James A. Mathias, Roger E. Stout, Richard N. Christensen   +4 more
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Thermoeconomic life-cycle costs of absorption chillers

Building Services Engineering Research and Technology, 1997
Thermoeconomics, which is a blend of thermodynamic and economic analysis, can be used to determine life-cycle equipment costs. This paper deals with the application of thermoeconomic theory to absorption chillers. Both initial and operating costs are considered. The best chiller selections for specific operating conditions are identified.
R. Tozer, R. James
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Simulation of an ammonia–water absorption chiller

Renewable Energy, 2013
Abstract An increased interest in absorption chillers has been observed [1] because these systems can utilize solar, geothermal and biomass energy sources, but also because they are quiet, vibration-free, require little maintenance and are ecological [2] .
Brice Le Lostec, Nicolas Galanis, Jocelyn Millette   +2 more
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Feasibility Study of the Absorption Chiller Integration

Applied Mechanics and Materials, 2015
Paper presents feasibility study of the absorption chiller integration. In the search model system of air conditioning uses absorption chiller instead of the standard vapor compression chiller due to the fact of insufficient electrical supply of the building. Calculated payback periods show limits of the effective applying of the absorption chiller.
Sofia Kolbaya, Tatiana Simankina, Viktor Albrekht   +2 more
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A novel lithium bromide absorption chiller with enhanced absorption pressure

Applied Thermal Engineering, 2012
Abstract Although lithium bromide absorption chillers (LBACs) are widely used to provide thermal comfort by utilizing waste heat, they suffer from low efficiency. This paper presents an experimental investigation on a novel reformed LBAC based on the absorption principle of the lithium–bromide/water solution in the sub-steady equilibrium state that ...
Guozhen Xie, Qingping Wu, Xiaoming Fa, Lirong Zhang, Pradeep Bansal   +4 more
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Dynamic simulation program with object-oriented formulation for absorption chillers (modelling, verification, and application to triple-effect absorption chiller)

International Journal of Refrigeration, 2010
Abstract A new dynamic simulation program for predicting the transient behavior of absorption chillers with arbitrary cycle configurations has been developed. This program combines an object-oriented formulation and a parallel processing program architecture.
H. Matsushima, T. Fujii, T. Komatsu, A. Nishiguchi   +3 more
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