Absorption refrigerator

About: Absorption refrigerator is a research topic. Over the lifetime, 3245 publications have been published within this topic receiving 40733 citations. The topic is also known as: gas absorption refrigerator.

Absorption chillers and heat pumps

Abstract: 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 in Absorption Cycle Processes Zero-Order Absorption Cycle Model Absorption Cycle Design Optimization Properties of Working Fluids Analytic Treatment of Thermodynamic Properties Graphical Perspective on Thermodynamic Properties of Absorption Working Fluids Thermodynamic Processes with Mixtures Mixing of Fluids and the Heat of Mixing Specific Heat of Mixtures Desorption Absorption Condensation and Evaporation Compression Pumping Throttling Ammonia Purification Heat Exchangers WATER/LITHIUM BROMIDE SYSTEMS Overview of Water/Lithium Bromide Technology Fundamentals and Operation Crystallization and Absorber Cooling Requirements Corrosion and Materials Compatibility Vacuum Requirements Octyl Alcohol Normal Maintenance and Expected Life Controls Single-Effect Water/Lithium Bromide Technology Single-Effect Water/Lithium Bromide Chiller Operating Conditions Single-Effect with Heat Transfer Models Single-Effect Water/Lithium Bromide Heat Transformer (Type II Heat Pump) Discussion of Available Single-Effect Systems Double-Effect Water/Lithium Bromide Technology Double-Effect Water/Lithium Bromide Cycles Solution Circuit Plumbing Options Operating Conditions of Double-Effect Machines Systems on the Market Advanced Water/Lithium Bromide Cycles Half-Effect Cycle Triple-Effect Cycle Resorption Cycle Additional Water/Lithium Bromide Technology AMMONIA/WATER SYSTEMS Single-Stage Ammonia/Water Systems General Considerations Performance Calculations Examples of Ammonia/Water Absorption Systems in Operations Two-Stage Ammonia/Water Systems Double-Effect Ammonia/Water Systems Double-Lift Ammonia/Water Systems Two-Stage Triple-Effect Ammonia/Water System Generator/Absorber Heat Exchange (GAX) Cycles Concept, Configurations and Design Considerations Branched GAX Systems GAX Cycle Hardware Diffusion Absorption Cycle Introduction Cycle Physics Choice of the Auxiliary Gas Total Pressure of the System Cycle Performance APPENDICES Properties of LiBr/H2O Properties of NH3/H2O Absorption Cycle Modeling Concentration Measurements by Titration Introduction to Engineering Equation Solver Overview of the ABSIM Software Package References Index

A review of absorption refrigeration technologies

Abstract: This paper provides a literature review on absorption refrigeration technology. A number of research options such as various types of absorption refrigeration systems, research on working fluids, and improvement of absorption processes are discussed.

Solar refrigeration options – a state-of-the-art review

Abstract: A state-of-the-art review is presented of the different technologies that are available to deliver refrigeration from solar energy. The review covers solar electric, solar thermal and some new emerging technologies. The solar thermal systems include thermo-mechanical, absorption, adsorption and desiccant solutions. A comparison is made between the different solutions both from the point of view of energy efficiency and economic feasibility. Solar electric and thermo-mechanical systems appear to be more expensive than thermal sorption systems. Absorption and adsorption are comparable in terms of performance but adsorption chillers are more expensive and bulkier than absorption chillers. The total cost of a single-effect LiBr–water absorption system is estimated to be the lowest.

Energy and exergy analysis of single effect and series flow double effect water–lithium bromide absorption refrigeration systems

Abstract: In this paper, the energy and exergy analysis of single effect and series flow double effect water-lithium bromide absorption systems is presented. A computational model has been developed for the parametric investigation of these systems. Newly developed computationally efficient property equations of water-lithium bromide solution have been used in the computer code. The analysis involves the determination of effects of generator, absorber and evaporator temperatures on the energetic and exergetic performance of these systems. The effects of pressure drop between evaporator and absorber, and effectiveness of heat exchangers are also investigated. The performance parameters computed are coefficient of performance, exergy destruction, efficiency defects and exergetic efficiency. The results indicate that coefficient of performance of the single effect system lies in range of 0.6-0.75 and the corresponding value of coefficient of performance for the series flow double effect system lies in the range of 1-1.28. The effect of parameters such as temperature difference between heat source and generator and evaporator and cold room have also been investigated. Irreversibility is highest in the absorber in both systems when compared to other system components.