Sökning: "exergy analyses"

Visar resultat 6 - 10 av 13 avhandlingar innehållade orden exergy analyses.

  1. 6. Computational Fluid Dynamics Modeling of Biomass Gasification in Fixed-bed Reactors Using Highly Preheated Agent

    Författare :Yueshi Wu; Weihong Yang; Jan Stasiek; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomass; high temperature agent gasification; CFD modeling; exergy efficiency; Energy Technology; Energiteknik;

    Sammanfattning : Biomass gasification is considered to be one of the most promising energy recovery technologies for the widespread utilization of biomass. Mathematical models have been developed to understand the gasification process inside gasifiers. LÄS MER

  3. 7. Exergy and Parametric Analysis: Methods and Concepts for a Sustainable Built Environment

    Författare :Marco Molinari; Folke Björk; Gudni Johannesson; Bjarne W. Olesen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Energy use in the world is continuously increasing. In the last 30 years the use of primary energy worldwide has more than doubled and it is mainly supplied with fossil fuels. A more efficient use of energy in the built environment has to be pursued if a more sustainable development is to be attained. LÄS MER

  4. 8. Methodology for the modelling of thermally activated building components in low exergy design

    Författare :Dietrich Schmidt; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building engineering; Byggnadsteknik;

    Sammanfattning : There is still an obvious and indisputable need for an increase in the efficiency of energy utilisation in buildings. Heating, cooling and lighting appliances in buildings account for more than one third of the world’s primary energy demand and there are great potentials, which can be obtained through better applications of the energy use in buildings. LÄS MER

  5. 9. An analysis of architectural and urban planning strategies for developing energy efficient cities in China

    Författare :Zhenhong Gu; Fredrik Gröndahl; Dong Wei; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Energy efficiency; Nanjing; China; urban planning; passive house; low exergy system; Building Environmental Assessment; LCA; Swedish housing; Hammarby Sjöstad; eco-village; game theory; systems theory; soft systems methodology; Industrial Ecology; Industriell ekologi;

    Sammanfattning : This thesis presents a detailed analysis of architecture and urban planning strategies for developingenergy-efficient cities in a Chinese context. The overall aim of the work is to examine how Chineseurbanisation and city construction can be improved from an energy-saving perspective. LÄS MER

  7. 10. Optimal Design of District Energy Systems: a Multi-Objective Approach

    Författare :Cong Wang; Ivo Martinac; Birgit Müller; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; multi-objective optimization; robust design optimization; district energy; Civil and Architectural Engineering; Byggvetenskap;

    Sammanfattning : The aim of this thesis is to develop a holistic approach to the optimal design of energy systems for building clusters or districts. The emerging Albano university campus, which is planned to be a vivid example of sustainable urban development, is used as a case study through collaboration with the property owners, Akademiska Hus and Svenska Bostäder. LÄS MER