Sökning: "värmeutbyte"

Hittade 5 uppsatser innehållade ordet värmeutbyte.

  1. 1. Free cooling and PVT integration in a ground-source heat pump (GSHP) system

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

    Författare :Christopher Pourier; [2023]
    Nyckelord :Ground-source heat pump; borehole; GSHP; photovoltaic thermal collector; PVT; free cooling; Ytjordvärmepump; borrhål; GSHP; solfångare; PVT; frikylning;

    Sammanfattning : The performance of ground-source heat pump (GSHP) systems can be negatively affected over time by soil temperature degradation of boreholes (BH) in heating dominated climates. Land area is scarce in the dense urban environments typical of multi-family houses (MFH) and can lead to accelerated degradation- in tight BH fields. LÄS MER

  3. 2. Thermal Performance Analysis of High Temperature Borehole Thermal Energy Storage Design from an Insulation Perspective

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

    Författare :Tobias Magnusson; Joel Ljunggren; [2019]
    Nyckelord :High Temperature Borehole Thermal Energy Storage; HT-BTES; Thermal Energy Storage; TRNSYS; Technology and Engineering;

    Sammanfattning : Thermal energy storage is a growing concept within the sector of energy production. The concept is based on storage of excess thermal energy, for usage during high demand, as a mean of reducing the need for new production. LÄS MER

  4. 3. Estimation of Engine Inlet Air Temperature in Fighter Aircraft

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Gustav Sandvik; [2018]
    Nyckelord :system identification; grey box modeling; engine inlet temperature; heat transfer; fighter aircraft;

    Sammanfattning : An accurate estimate of the gasturbine inlet air temperature is essential to the stability of the engine since its control depends on it. Most supersonic military aircrafts have a design with the engine integrated in the fuselage which requires a rather long inlet duct from the inlet opening to the engine face. LÄS MER

  5. 4. Optimering av sotningsfrekvens i biobränsleeldad CFB-panna : panna 5, Mälarenergi AB, Västerås

    L3-uppsats, SLU/Dept. of Energy and Technology

    Författare :Anna Pettersson; [2008]
    Nyckelord :sotningsintervall; värmeöverföring; överhettare; ekonomiser; luftförvärmare; sotblåsare; sotningsmetod; sotning; CFB-panna;

    Sammanfattning : During the past 30 years the fuels for energy production in heating and power plants have changed. Fossil fuels have decreased in usage whereas bio fuels in Sweden have increased with 60% since the 1970's. Different fuels affects combustion and the release of various substances and particles into the flue gas. LÄS MER

  7. 5. En geokemisk studie av bergartsvariationen på Bullberget i västra Dalarna

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Anders Kjöllerström; [2000]
    Nyckelord :Central Scandinavian Dolerite Group CSDG ; epsilon-Nd; geochemistry; ratio correlation; wallrock assimilation; two-component mixing; Earth and Environmental Sciences;

    Sammanfattning : The Bullberget hill is situated in the Lima parish of the Dalarna province in western Sweden. The major rock forming the hill is Öje basalt. This is cut by a dolerite sill belonging to the same generation as the Åsby dolerite, which is common in the province. The sill displays a continuos transition from a SiO2-content of 54% to 73%. LÄS MER