Summary
In the air-conditioning and refrigeration industry, several efforts have been made to protect the environment. One of them is to use carbon dioxide as an alternative refrigerant; however, several researchers have shown that the transcritical heat pump system using CO2 has a relatively lower efficiency than a system using a traditional refrigerant, which results in a degraded steady-state system performance. In this study, fuzzy control of the CO2 heat pump system was applied to modulate the heat capacity and improve the system performance. The heat capacity is controlled by the change of the inverter frequency and the system performance is controlled by the superheat adjustment. The capacity modulation and superheat adjustment have been performed independently, based on multi-input multi-output control logic. Performance improvement was obtained for gas cooler water inlet temperature of 30°C and evaporator water inlet temperature of 27°C.
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Details
- Original title: Estudio sobre control por lógica difusa de un sistema de bomba de calor para CO2.
- Record ID : 30002629
- Languages: Spanish
- Source: Frío Calor Aire acondicionado - vol. 38 - n. 431
- Publication date: 2010/12
Links
- See translations: Study on the fuzzy control of CO2 heat pump system.
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Indexing
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Study on the fuzzy control of CO2 heat pump sys...
- Author(s) : LEE J. S., HAN Y. H., KIM M. S.
- Date : 2009/06/23
- Languages : English
- Source: 3rd Conference on Thermophysical Properties and Transfer Processes of Refrigerants
- Formats : PDF
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Optimal control of a heat pump system using fuz...
- Author(s) : LEE G., LEE I. H., CHOI J., et al.
- Date : 2007/08/21
- Languages : English
- Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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Denkanstösse zur Energieoptimierung komplexer V...
- Author(s) : LUDWIG N.
- Date : 2004/03
- Languages : German
- Source: Kälte + Klimatechnik (Die) - vol. 57 - n. 3
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Fuzzy control of time delay systems.
- Author(s) : ZEMANOVICOVA A., KARSAIOVA M.
- Date : 1996
- Languages : Slovak
- Source: Bull. Potravin. Vysk. - vol. 35 - n. 4
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Control bifurcation issues of transcritical CO2...
- Author(s) : SIENEL T., HUFF H.
- Date : 2006/05/29
- Languages : English
- Source: 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
- Formats : PDF
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