Search for dissertations about: "Efficiency factors of space heating"

Found 5 swedish dissertations containing the words Efficiency factors of space heating.

  1. 1. Efficiency factors for space heating system in buildings

    University dissertation from Umeå : Umeå University

    Author : Christian Brembilla; Umeå universitet.; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Efficiency factors of space heating; hydronic panel radiator; hydronic floor heating; multilayer wall; numerical modelling; room control volume; decrement factor; time delay; heat conduction; heat convection; heat radiation; heat storage; thermal inertia; Euler solver; Newton-Raphson method; synthetic weather file; feedback and feed-forward control strategies; adaptive control; validation methodology; uncertainty bands; robustness of model predictions; thermostatic booth simulator; differential sensitivity analysis; transient model of panel radiator with multiple storage elements; active thermal mass; benchmark performance indicator; linear regression model; calibration through uncertainty bands; hybrid model of low-energy building: law driven data driven; outdoor temperature compensation heating curve; solar radiation model; finite difference method; heat equation;

    Abstract : The thesis focuses on the efficiency of the space heating system. In particular, the efficiency factors measure the efficiency of thermal zone. The efficiency factors measures how the energy is used in a space heating. READ MORE

  2. 2. Buildings and district heating - contributions to development and assessments of efficient technology

    University dissertation from Umeå : Umeå University

    Author : Per-Olof Johansson; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; District heating; hydronic space heating; natural circulation; lowered return temperature; primary energy; add-on-fan blower;

    Abstract : The objective of this thesis is to contribute to improved performance of district heating systems by focusing on three items. Item 1: Study of three methods for improving the performance of sub-systems within buildings connected to the distribution network. The methods can be considered as more or less innovative. READ MORE

  3. 3. Energy renovation of multi-family buildings in Sweden An evaluation of life cycle costs, indoor environment and primary energy use, and a comparison with constructing a new building

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Lina La Fleur; Linköpings universitet.; Linköpings universitet.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Residential buildings account for 27% of the final energy use in the European Union. In cold climates, space heating represents the largest proportion of the energy demand in residential buildings. By implementing energy efficiency measures (EEMs) in existing buildings, energy use can be significantly reduced. READ MORE

  4. 4. Towards sustainability with building services systems : – by focusing on material choices, energy use and thermal indoor climates in residential buildings

    University dissertation from Avd Installationsteknik, LTH, Lunds universitet

    Author : Mats Dahlblom; [2020-03-12]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; residential apartment buildings; building services systems; energy use; hvac; hydronic heating system; heating control; feedback control loop; indoor temperature measurements; individual metering and billing; indoor temperature variations; thermal comfort; vertical temperature gradient; case study;

    Abstract : For a development to be considered sustainable, social, economic and environmental requirements must be met. The Swedish sustainable development goals, based on Agenda 2030, contain 16 national environmental quality goals. The National Board of Housing, Building and Planning is responsible for achieving the goal "A good built environment". READ MORE

  5. 5. Exergy Analysis in Buildings A complementary approach to energy analysis

    University dissertation from Stockholm : Byggvetenskap

    Author : Marco Molinari; KTH.; [2009]
    Keywords : Exergy; Energy; Building systems performance; Built environment.;

    Abstract : Though mandatory to be pursued, improved energy efficiency is not the only target to reach. The quality of energy has to be assessed as well. Most of the overall energy use in residential building is for low temperature heat, i.e. READ MORE