Sökning: "refrigeration"

Visar resultat 21 - 25 av 138 uppsatser innehållade ordet refrigeration.

  1. 21. Internal strain in the magnetocaloric alloy MnCoSi

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Olivia Vaerst; [2021]
    Nyckelord :MnCoSi; Magnetocaloric Effect; Arc Melting; Strain; X-Ray Diffraction; Williamson-Hall; Rietveld Refinement; Physics and Astronomy;

    Sammanfattning : Cooling systems based on magnetic refrigeration are a promising and environmentally friendly alternative to commonly used gas-compression refrigeration. Magnetic refrigeration is based on the magnetocaloric effect. LÄS MER

  3. 22. Development of a Plug and Play Solution for Commercial Off-grid Solar Refrigeration : Presenting a Battery Supported System Providing the AC Power Required to run a Coolfinity 300L Commercial Refrigerator

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Martijn de Groot; [2021]
    Nyckelord :Solar refrigeration; Off grid refrigeration; Photovoltaic performance estimation; DC to AC conversion;

    Sammanfattning : In this report the design and testing of a plug and play system to run Coolfinity’s Icevolt 300 refrigerator on solar panels is discussed. Such a system will be able to provide adequate cooling for food & beverages in area’s with unreliable or no electricity available. LÄS MER

  4. 23. CFD Simulation of a Fin-Tube Evaporator under icing

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Abhay Mahesh Hervatte; [2021]
    Nyckelord :CFD; Refrigeration; HVAC; Evaporator; Thermodynamics; Icing;

    Sammanfattning : The study involves development of a methodology to simulate a fin-tube evaporator under icing conditions using CFD in Ansys® Academic Fluent 2021R1. It aims to build on previous studies performed on heat pumps. It was performed by Abhay M. Hervatte in collaboration with Bosch Thermoteknik AB, Tranås, SE during the spring term of the year 2021. LÄS MER

  5. 24. Aqua Ammonia as Secondary Fluid in Ice Rink Applications

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Brianna Kilberg; [2020]
    Nyckelord :Ice rink; secondary fluid; aqua ammonia; ammonia water; thermophysical properties; corrosion; pressure drop; pumping power; refrigeration;

    Sammanfattning : Refrigerant management is crucial in the attempts to slow climate change. Emissions from the refrigeration sector are primarily due to poor management and unsafe destruction of refrigerants currently in circulation. Safe refrigerant management and improving system operating efficiency can result in a reduction of emissions. LÄS MER

  7. 25. Dimples in corrugated channels to improve efficiency in plate heat exchangers

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Gustav Karlsson; [2020]
    Nyckelord :Dimples; Plate Heat Exchangers; Heat Transfer Enhancement; CFD; Large Eddy Simulation; Reynolds Averaged Navier Stokes Simulation; chemical engineering; kemiteknik; Technology and Engineering;

    Sammanfattning : The development of new heat exchanger patterns is ever changing. Companies are constantly pushing innovation to satisfy costumer needs in terms of thermal efficiency, reliability and serviceability. In this thesis, the implementation of dimples in the corrugated pattern of a plate heat exchanger is investigated to increase the thermal efficiency. LÄS MER