Sökning: "Direct refrigerant system"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Direct refrigerant system.

  1. 1. Comparative Analysis of Modern Energy Systems for Ice Rinks

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

    Författare :Pendar Hemati; [2023]
    Nyckelord :Ice rinks; refrigeration; heat recovery; CO2; ammonia; propane; Pistas de hielo; refrigeración; recuperación de calor; CO2; amoníaco; propano;

    Sammanfattning : Ice rinks are highly energy-intensive commercial buildings with an average annual energy consumption of 1,000 MWh, most of it being used to cover the simultaneous heating and cooling demands. The aim of this thesis is to find the most energy efficient energy system for ice rinks by evaluating different system modifications and refrigerants. LÄS MER

  3. 2. Natural Refrigerants in Data Center Cooling with Thermosiphon Application

    Master-uppsats, KTH/Energiteknik

    Författare :VICTOR HEINERUD; ANDRÉ SAHLSTEN; [2016]
    Nyckelord :;

    Sammanfattning : Ever since the computer was invented, there has been a need of data storage and the demand has strictly grown since. This has resulted in a huge amount of data centers and the trend has shown no signs of changing. The data centers are powered by electricity and in 2010 the electricity consumption for data centers stood for 1. LÄS MER

  4. 3. SECONDARY FLUIDS USED IN INDIRECT REFRIGERATION SYSTEMS IN SWEDEN

    Master-uppsats, KTH/Tillämpad termodynamik och kylteknik

    Författare :Patrick Javier Salom Munoz; [2015]
    Nyckelord :Secondary fluids; ground source heat pumps; indirect refrigeration system; regulations; Swedish market;

    Sammanfattning : Interest in indirect (secondary) refrigeration systems has grown since the discovery of the negative effect of environmentally hazardous refrigerants and leakage problems from direct expansion systems. Among the positive effects of indirect systems are: decreased quantities of primary refrigerant, factory built units and confinement of refrigerant to the machine room. LÄS MER

  5. 4. Experimental Evaluation Of Large Scale Propane Heat Pump For Space Heating Application

    Master-uppsats, KTH/Tillämpad termodynamik och kylteknik

    Författare :Salvatore Piscopiello; [2015]
    Nyckelord :Heat pumps; propane; tandem compressor; IMSTART model; hydraulic system design;

    Sammanfattning : A significant part of the environmental impact of a heat pump isgenerally related to the direct emission of the refrigerant fluid during thelife time of the machine. Although the Montreal Protocol has alreadylargely secured its status as a success story by cutting the ozone deplentationrefrigerants drastically, we still have to deal with the challengesresulting from climate change. LÄS MER

  7. 5. Parametric Ram Air Channel Model for Flow Optimization

    Master-uppsats, Fluida och mekatroniska system; Tekniska högskolan

    Författare :Chetan Kumar Nangunoori; Ravichandra Kumar Kumar Bhaskar; [2012]
    Nyckelord :;

    Sammanfattning : Ram air channel or NACA channel is used to direct the ambient air for various purposes in an aircraft, such as pressurizing the cabin or as a coolant to heat exchangers and even more other applications like a cooling of the coolant. It is designed; such that it supplies the required amount of ambient air for various operations as mentioned, even aero-dynamical features should be taken into consideration while designing. LÄS MER