Sökning: "refrigerant charge"

Visar resultat 6 - 8 av 8 uppsatser innehållade orden refrigerant charge.

  1. 6. Evaluating alternative refrigerants for the room air conditioner market

    Master-uppsats, KTH/Tillämpad termodynamik och kylteknik

    Författare :Izabelle Back; Lars Dunberger; [2015]
    Nyckelord :Refrigerant; air conditioner; market; trends; alternative refrigerant; test rig; GWP; R32; R290;

    Sammanfattning : This study aimed to facilitate evaluation of alternative refrigerants for the air conditioner market. In order to achieve this target, two objectives were set. The first being the identification of alternative refrigerant with regard to regulations and trends. LÄS MER

  3. 7. Experimental analysis of variable capacity heat pump system equipped with vapour injection and permanent magnet motor

    Master-uppsats, KTH/Tillämpad termodynamik och kylteknik

    Författare :Umer Khalid Awan; [2012]
    Nyckelord :heat pump; variable capacity; scroll compressor; vapour injection; permanent magnet motor; R410A;

    Sammanfattning : This study analyzes the performance of variable capacity heat pump scroll compressor which is equipped with vapour injection and permanent magnet motor. Refrigerant used in the system is R410A. The study is divided in two phases. In first phase, tests are carried out for heat pump without vapour injection. LÄS MER

  4. 8. Design and Construction of a Small Ammonia Heat Pump

    Master-uppsats, KTH/Tillämpad termodynamik och kylteknik

    Författare :Behzad A Monfared; [2010]
    Nyckelord :ammonia; heat pump; minichannel; heat exchanger; refrigerant charge; COP; tap water heating; space heating; domestic hot water; variable speed; compressor;

    Sammanfattning : In view of the fact that most of the synthetic refrigerants, in case of leakage or release, are harmful to the environment by contributing in global warming or depleting stratospheric ozone layer, many research works have been done recently to find alternative refrigerants posing no or negligible threat to the environment. Among alternative refrigerants, ammonia, a natural refrigerant with zero Global Warming Potential (GWP) and Ozone Depletion Potential (ODP), can be a sensible choice. LÄS MER