Sökning: "Per Lundqvist"

Visar resultat 16 - 20 av 29 avhandlingar innehållade orden Per Lundqvist.

  1. 16. End-user activity-based service design in the built environment context : Exploring everyday life in KTH Live-in-Lab

    Författare :Elena Malakhatka; Per Lundqvist; Marco Molinari; Shaun West; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; service design; human activity system; building system; service system; actors network analysis; living lab; sustainable building; Energy Technology; Energiteknik; Building Service and Energy Systems; Installations- och energisystem;

    Sammanfattning : The main goal of this thesis is to communicate the motivation, process, and result of the research project dedicated to exploring the topic of Service Design, based on end-user activities analysis in the built environment context. We have elected to use a KTH Live-in-Lab as a testbed in relation to the chosen living lab network of actors and stakeholders. LÄS MER

  3. 17. Combined solar and pellet heating systems for single-family houses : How to achieve decreased electricity usage, increased system efficiency and increased solar gains

    Författare :Tomas Persson; Per Lundqvist; Simon Furbo; Högskolan Dalarna; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pellet; pelleteldning; kamin; panna; solvärmesystem; varmvattenberedning; systemutformning; småhus; elbesparing; verkningsgrad; emissioner; rökgasförluster; skorstensförlust; diskmaskin; tvättmaskin; Thermal energy engineering;

    Sammanfattning : In Sweden, there are about 0.5 million single-family houses that are heated by electricity alone, and rising electricity costs force the conversion to other heating sources such as heat pumps and wood pellet heating systems. Pellet heating systems for single-family houses are currently a strongly growing market. LÄS MER

  4. 18. Solar heat pump systems for heating applications : Analysis of system performance and possible solutions for improving system performance

    Författare :Stefano Poppi; Per Lundqvist; Chris Bales; Kai Siren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar heat pump systems; techno-economics; solar thermal; system improvements; cost-effectiveness; Energiteknik; Energy Technology; MacSheep;

    Sammanfattning : Solar heat pump systems (SHPs) are systems that combine solar energy and heat pumps. SHPs have been investigated for several decades and have been proven to increase the share of renewable energy and reduce electric energy demand in residential heating applications. LÄS MER

  5. 19. Solar-driven refrigeration systems with focus on the ejector cycle

    Författare :Wimolsiri Pridasawas; Per Lundqvist; Hans-Martin Henning; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar Cooling; Solar-Driven Refrigeration System; Ejector; Ejector Refrigeration Cycle; Exergy Analysis; Dynamic Analysis; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : Interest in utilizing solar-driven refrigeration systems for air-conditioning or refrigeration purposes has grown continuously. Solar cooling is com-prised of many attractive features and is one path towards a more sus-tainable energy system. LÄS MER

  7. 20. Modelling the dynamics of domestic low-temperature heat pump heating systems for improved performance and thermal comfort : a systems approach

    Författare :Dimitra Sakellari; Per Lundqvist; Savvas Tassou; KTH; []
    Nyckelord :Technology; heat pump; domestic heating and ventilation; low-temperature hydronic heat distribution; systems approach; integration; simulation; energy efficiency; TEKNIKVETENSKAP; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The present environmental concerns and the rising human requirement for solutions with better comfort and lower costs have resulted in an increased awareness for the energy use in the built environment. Technical advances in building structural systems and materials, heating and other comfort-providing systems and controlling strategies all lead to the integration of building technology with the function of buildings and the aesthetics. LÄS MER