Sökning: "secondary refrigerant"
Visar resultat 1 - 5 av 8 uppsatser innehållade orden secondary refrigerant.
1. Comparative Analysis of Modern Energy Systems for Ice Rinks
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)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
2. ManagementPractical Aspects of Aqua Ammonia as Secondary Refrigerant in Ice Rinks
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : The transition from fluorinated gases to natural refrigerants could be key to reducing the impacts of climate change. Ice rinks are energy-intensive buildings, with large heating and cooling demands. The pumping power required to move the secondary refrigerant typically accounts for a sizable amount of the energy use of the refrigeration system. LÄS MER
3. Aqua Ammonia as Secondary Fluid in Ice Rink Applications
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)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
4. Study of high flash point ethyl alcohol-based secondary fluids applied in Ground Source Heat Pumps systems
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : Ethyl alcohol (ethanol) as secondary fluids is very popular as heat transfer fluid for indirect refrigeration system with ground source heat pump systems (GSHP) in several countries such as Sweden, Norway, Switzerland, Finland and other European countries. There have been several researches about the future ofthe refrigeration sector, refrigerants and refrigeration systems. LÄS MER
5. SECONDARY FLUIDS USED IN INDIRECT REFRIGERATION SYSTEMS IN SWEDEN
Master-uppsats, KTH/Tillämpad termodynamik och kylteknikSammanfattning : 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