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Experimental investigation of oil free absorption compression heat pumps with liquid injection screw compressor.
Number: 1118
Author(s) : HAMID K., REN S., TOLSTOREBROV I., HAFNER A., EIKEVIK T. M.
Summary
Ammonia-water combined absorption-compression heat pump (CACHP) based on the Osenbrück cycle is a promising high-temperature heating technology. However, in the case of a large temperature rise, the CACHP is faced with the problem of the compressor discharge temperature being too high, which greatly limits its application. In recent years, several studies have stated that the temperature limitation of the compressor during the compression process is a critical parameter for increasing the achievable sink outlet temperature. oil-free liquid injection twin screw compressors have gained significant attention due to their potential for improved performance and reduced environmental impact. This study presents an experimental assessment of the oil-free ammonia-water liquid injection twin screw compressor, aiming to evaluate its efficiency in a combined absorption-compression heat pump (CACHP) with an ammonia-water mixture as the working fluid. Based on preliminary results, the discharge temperature could be reduced significantly by increasing the rate of ammonia-water mixture lean solution injection.
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Details
- Original title: Experimental investigation of oil free absorption compression heat pumps with liquid injection screw compressor.
- Record ID : 30032655
- Languages: English
- Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
- Publication date: 2024/08
- DOI: http://dx.doi.org/10.18462/iir.gl2024.1118
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Indexing
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- Source: 2002 Purdue conferences. 2002 compressor engineering & refrigeration and air conditioning conferences at Purdue [CD-ROM].
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- Author(s) : STAICOVICI M. D.
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Heat pump systems with ammonia as refrigerant.
- Author(s) : HALOZAN H.
- Date : 2005/05/06
- Languages : English
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