Essays about: "geothermal heat"

Showing result 26 - 30 of 63 essays containing the words geothermal heat.

  1. 26. Study of high flash point ethyl alcohol-based secondary fluids applied in Ground Source Heat Pumps systems

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Luis Enrique Carrion Domenech; [2019]
    Keywords : indirect refrigeration system; secondary fluid; flammability; alcohols; geothermal heat pump systems; properties.;

    Abstract : 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. READ MORE

  3. 27. Deriving Geothermal Reservoir Properties from Tomographic Models

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Samantha Kim; [2019]
    Keywords : Geothermal reservoir; super-critical fluids; optimization; seismic tomography; effective medium model; Iceland; Geotermisk energi; seismisk; mediummodel; reservoir; spricktäthet; superkritisk vätska optimisering;

    Abstract : The effectiveness of the heat transfer in a geothermal reservoir strongly depends on its temperature, pressure and rock type. A porous and fractured rock is essential to provide a hot fluid circulation to a geothermal power plant. READ MORE

  4. 28. Techno-Economic Analysis of Organic Rankine Cycles for a Boiler Station : Energy system modeling and simulation optimization

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Jamel Hudson; [2019]
    Keywords : Organic Rankine cycle; ORC; Working fluids; Boiler station; District heating system; Simulation model;

    Abstract : The Organic Rankine Cycle (ORC) may be the superior cycle for power generation using low temperature and low power heat sources due to the utilization of high molecular mass fluids with low boiling points. They are flexible, simple, easy to operate and maintain, and offer many possible areas of applications including waste heat recovery and power generation from biomass, geothermal and even solar energy. READ MORE

  5. 29. A hybrid low - temperature heating system in geothermal retrofitting for public buildings in the Mediterranean climate

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Boumediene Bizimana; [2019]
    Keywords : Hybrid low-temperature floor heating; Energy performance; Thermal comfort; Indoor air quality; Lågtemperaturgolvvärme; Energiprestanda; Termisk komfort; Inomhusluftkvalitet;

    Abstract : More than 50 % of EU’s yearly energy demand is spent on heating and cooling systems with which most of its source is generated from non-renewable fossil fuel [1]. Furthermore, half of the EU buildings are heated with a non-efficient boiler of about 60% or less efficiency [1]. READ MORE

  6. 30. Heating systems in small houses : A comparison between geothermal heating and district heating

    University essay from KTH/Byggteknik och design

    Author : Victor Fredriksson; Bane Gluhajic; [2019]
    Keywords : Heating system; Geothermal heating; District heating; Comparison; Energy performance; Värmesystem; Bergvärme; Fjärrvärme; Jämförelse; Energiprestanda;

    Abstract : District heating and geothermal heating are in present times two established heating systems that are often compared against each other. The purpose of this work is to describe which factors influence the choice of heating system during the planning stage and what the costs are for each system. READ MORE