Search for dissertations about: "heat demand density"

Showing result 1 - 5 of 21 swedish dissertations containing the words heat demand density.

  1. 1. District heating in future Europe : Modelling expansion potentials and mapping heat synergy regions

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Urban Persson; Sven Werner; Lars J. Nilsson; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; district heating; energy efficiency; distribution capital cost; heat demand density; plot ratio; excess heat recovery; sequential energy supply; heat utilisation rate; effective width;

    Abstract : This thesis presents a set of methodologies and approaches to investigate and determine the extent by which district heating can contribute to improved energy system efficiency and reduced carbon dioxide emissions in future Europe. The main motivation for suggesting large-scale implementation of district heating as a structural energy efficiency measure to obtain these objectives originates essentially in the predicament that a majority of European buildings today remain highly dependent on fossil fuels to provide energy needed for space heating and hot water preparation. READ MORE

  2. 2. District heating in future Europe: Modelling expansion potentials and mapping heat synergy regions

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Urban Persson; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; excess heat recovery; effective width; district heating; energy efficiency; distribution capital cost; plot ratio; heat utilisation rate; heat demand density; sequential energy supply;

    Abstract : This thesis presents a set of methodologies and approaches to investigate and determine the extent by which district heating can contribute to improved energy system efficiency and reduced carbon dioxide emissions in future Europe. The main motivation for suggesting large-scale implementation of district heating as a structural energy efficiency measure to obtain these objectives originates essentially in the predicament that a majority of European buildings today remain highly dependent on fossil fuels to provide energy needed for space heating and hot water preparation. READ MORE

  3. 3. Latent Heat Thermal Energy Storage for Indoor Comfort Control

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : NingWei Justin Chiu; Viktoria Martin; Motoi Yamaha; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal Energy Storage; Phase Change Material; Indoor Comfort; Heat Transfer; Termisk Energilagring; Fasändringsmaterial; Inomhuskomfort; Värmeöverföring;

    Abstract : Equating Earth’s existence to 24 hours, we, the Homo sapiens, came about in the last four seconds. Fossil fuel came to our knowledge with mass extraction dating from the Industrial Revolution two centuries ago, in other words 4 milliseconds out of Earth’s 24-hour equivalent lifetime. READ MORE

  4. 4. Modeling and Performance Analysis of Alternative Heat Exchangers for Heavy Vehicles

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Wamei Lin; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Countercurrent flow; Graphite foam; Heat exchanger; Thermal performance; Computational fluid dynamics;

    Abstract : Cross flow heat exchangers made from aluminum are common as radiators in vehicles. However, due to the increasing power requirement and the limited available space in vehicles, it is extremely difficult to increase the size of heat exchangers (HEXs) placed in the front of vehicles. READ MORE

  5. 5. Heat driven cooling in district energy systems

    University dissertation from Stockholm : Kemiteknik

    Author : Magnus Rydstrand; [2004]
    Keywords : District heating; district cooling; thermal storage; humidified gas turbines; combined heat and power; cooling;

    Abstract : Abstract The threat of global warming, caused by increasingemissions of carbon dioxide (CO2), is one reason why cooling supply systems mustwork more efficiently in the world today. An increasing share,currently between 10 and 20%, of the global output ofelectricity is consumed to produce cooling. READ MORE