Search for dissertations about: "thesis on refrigeration and air conditioning"

Showing result 1 - 5 of 6 swedish dissertations containing the words thesis on refrigeration and air conditioning.

  1. 1. Load Shifting and Storage of Cooling Energy through Ice Bank or Ice Slurry Systems modelling and experimental analysis

    University dissertation from Stockholm : KTH

    Author : Marino Grozdek; Per Gunnar Lundqvist; Michael Kauffeld; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; refrigeration systems; cool thermal energy storage system; ice; modelling; simulation; field measurement; experiment; indirect system; ice-on-coil system; external melt; ice slurry; homogeneous storage; heterogeneous storage; TECHNOLOGY Engineering mechanics Mechanical and thermal engineering Thermal energy engineering; TEKNIKVETENSKAP Teknisk mekanik Mekanisk och termisk energiteknik Termisk energiteknik;

    Abstract : Ice based Cool Thermal Energy Storage (CTES) systems have attracted much attention during last few decades. The reasons are mainly of economical and environmental nature. READ MORE

  2. 2. New refrigerants for vapour compression refrigeration and heat pump systems : evaluation in a context of the requirements set by the F-gas Regulation and the Paris Agreement goals

    University dissertation from Universitetsservice US-AB

    Author : Pavel Makhnatch; Rahmatollah Khodabandeh; Angelo Maiorino; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; refrigerant; retrofit; drop-in; HFC; HFO; F-gas Regulation; Kigali Amendment; Montreal protocol; Life cycle climate performance; LCCP; climate change; Energiteknik; Energy Technology;

    Abstract : Given the global commitment to reduce the impact of fluorinated gases on climate and the regulations controlling their use in the European Union (EU), this thesis investigates new refrigerants that have been recently proposed to meet the demands of the refrigeration industry in the EU, which must satisfy the legislative requirements of the F-gas Regulation and facilitate meeting the goals of the Paris Agreement.The legislative requirements of the EU have intensified refrigerant development with reduced GWP. READ MORE

  3. 3. Solar-driven refrigeration systems with focus on the ejector cycle

    University dissertation from Stockholm : KTH

    Author : Wimolsiri Pridasawas; Per Lundqvist; Hans-Martin Henning; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar Cooling; Solar-Driven Refrigeration System; Ejector; Ejector Refrigeration Cycle; Exergy Analysis; Dynamic Analysis; TECHNOLOGY Engineering mechanics; TEKNIKVETENSKAP Teknisk mekanik;

    Abstract : Interest in utilizing solar-driven refrigeration systems for air-conditioning or refrigeration purposes has grown continuously. Solar cooling is com-prised of many attractive features and is one path towards a more sus-tainable energy system. READ MORE

  4. 4. Investigation of Vapor Ejectors in Heat Driven Ejector Refrigeration Systems

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Jianyong Chen; Björn Palm; Hans Havtun; Ian W. Eames; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vEjector Refrigeration System; Ejector; Efficiency; Performance; Exergy Analysis; Experiment.; Energiteknik; Energy Technology;

    Abstract : Refrigeration systems, air-conditioning units and heat pumps have been recognized as indispensable machines in human life, and are used for e.g. food storage, provision of thermal comfort. These machines are dominated by the vapor compression refrigeration system and consume a large percentage of world-wide electricity output. READ MORE

  5. 5. Solubility of HFC Refrigerants in Long-Chained Hydrocarbons and Pentaerythritol Esters Measurements and Development of Predictive Models

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Åsa Wahlström; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Restrictions for environmental reasons on the use of CFCs and HCFCs, the traditional working fluids in heat pumps, refrigeration plants and air conditioning, have led to the use of pure HFCs and blends of HFCs. However, since HFCs have a different influence on compressor oils, new oils that are compatible with HFCs need to be found. READ MORE