Sökning: "calorific value"

Visar resultat 1 - 5 av 24 avhandlingar innehållade orden calorific value.

  1. 1. Determining the quality of natural gas and biomethane : Development of a correlative method and instrument prototype for measuring gas quality

    Författare :Taras Koturbash; Vladimir G. Kutcherov; Andrew R. Martin; Khaled Loubar; KTH; []
    Nyckelord :Natural gas; biomethane; calorific value; Wobbe Index; ultrasonic measurement; sound attenuation; Energy Technology; Energiteknik;

    Sammanfattning : The composition of natural gas highly depends on its origin: natural gas from various deposits, substitute natural gas that can be produced from fossil fuels or renewable sources. The intermixing of gases from various supply sources during pipeline transportation also leads to more complicated and unpredictable gas composition variations at the consumption site. LÄS MER

  3. 2. Thermally homogenous gasification of biomass/coal/waste for medium or high calorific value syngas production

    Författare :Anna Ponzio; Wlodzimierz Blasiak; Petr Stehlik; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning :  Today’s problems with emissions of green house gases, land filling of waste and depletion of the oil reserves calls for new energy systems based on alternative fuels like biomass and waste. Gasification is an attractive technology for the use of such solid fuels. LÄS MER

  4. 3. Stump as a fuel : the influence of harvesting technique and storage method on fuel quality of Norway spruce

    Författare :Erik Anerud; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Uncertain long-term availability of fossil fuels and the negative environmental impact of using it have created an urgent need for reliable renewable energy sources. Wood fuel, particularly forest residues is one of these sources which are in high demand in Sweden today. LÄS MER

  5. 4. Skrovmål : kosthållning och matlagning i den svenska flottan från 1500-tal till 1700-tal

    Författare :Ulrica Söderlind; Johan Söderberg; Milton Nuñez; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Navy warships; naval operations; provisions; diet; food; drink; protein; fat; carbohydrates; Sweden; maritime archaeology; economic history; interdisciplinary; Economic history; Ekonomisk historia;

    Sammanfattning : The thesis investigates war and naval life from a new and different perspective than earlier studies. Naval warfare is studied from the perspective of provisions, diet, and nutrition. LÄS MER

  7. 5. Mathematical modeling of municipal solid waste plasma gasification in a fixed-bed melting reactor

    Författare :Qinglin Zhang; Weihong Yang; Wlodzimierz Blasiak; Halina Kruczek; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mathematical modeling; plasma gasification; municipal solid waste; fixed-bed;

    Sammanfattning : The increasing yield of municipal solid waste (MSW) is one of the main by-products of modern society. Among various MSW treatment methods, plasma gasification in a fixed-bed melting reactor (PGM) is a new technology, which may provide an efficient and environmental friendly solution for problems related to MSW disposals. LÄS MER