3.8 Proceedings Paper

Performance Evaluation for a Low Temperature Heat Powered for 3-Beds with dual Evaporators Silica Gel Water Adsorption Chillers

Publisher

IEEE

Keywords

Adsorption; chiller; silica-gel; cooling; low temperature; COP; cogeneration

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Funding

  1. CUW EDF
  2. European Union as part of the European Social Fund
  3. Ministry for Science and Higher Education

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The adsorption chiller technology makes possible to construct the chillers that can be powered by a low temperature heat source, which improves the efficiency of the energy and minimises the level of environmental pollutions. It has been found that adsorption chillers are valuable when the heat source is affordable as cogeneration, solar, geothermal, or waste heat sources, especially in situations when the heat is partially dissipated in the environment. On the other hand, adsorption chillers are non-competitive if the heat is delivered from dedicated combustion of fossil fuels, hence the relatively low COP of adsorption chillers against compressor chillers. For this reason, it was proposed and tested three-beds with dual evaporators of 100 kW adsorption chiller driven with low temperature heat from cogeneration. In order to achieve the highest performance, the switching time was optimized. It was found that the best adsorption performance is at switching time of about 900 sec to get the highest COP around 0.645 and total cooling capacity around 90.5 kW.

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