Sökning: "refrigerant"

Visar resultat 1 - 5 av 30 avhandlingar innehållade ordet refrigerant.

  1. 1. Phase-out of refrigerant R22

    Författare :Anders Johansson; KTH; []
    Nyckelord :Retrofit; Phase-out; CFC; HCFC; HFC; R22; R407C; R417A; R404A; R134a; Ozone depletion; Zeotropic refrigerant mixture; Circulated composition; Measurement; Energy; Energy efficiency; System; Systems analysis; Modelling; Simulation; Prediction;

    Sammanfattning : .... LÄS MER

  3. 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

    Författare :Pavel Makhnatch; Rahmatollah Khodabandeh; Angelo Maiorino; KTH; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  4. 3. CFC and HCFC refrigerant retrofit : a theoretical, practical and environmental evaluation of alternatives

    Författare :Lars Herbe; KTH; []
    Nyckelord :Refrigerants;

    Sammanfattning : .... LÄS MER

  5. 4. Properties of oil and refrigerant mixtures : lubrication of ball bearings in refrigeration compressors

    Författare :Roger Tuomas; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Sammanfattning : A refrigeration compressor contains highly loaded mechanical contacts that have to be lubricated. The lubricant used in refrigeration compressors consists of an oil and refrigerant mixture, and the refrigerant concentration can be up to 40 wt%. LÄS MER

  7. 5. Propane as refrigerant in residential heat pumps

    Författare :Olivier Pelletier; KTH; []
    Nyckelord :Propane; Refrigerants; Heat pumps;

    Sammanfattning : .... LÄS MER