Search for dissertations about: "geothermal heat pumps"

Found 5 swedish dissertations containing the words geothermal heat pumps.

  2. 1. Thermal Interference Between Neighbouring Ground-Source Heat Pumps : Tools to Calcualte it and Solutions to Limit it

    Author : Maria Letizia Fascì; Joachim Claesson; Alberto Lazzarotto; Loius Lamarche; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ground source heat pumps; thermal interference; neighbouring geothermal boreholes; finite line source; mitigation strategies; Energiteknik; Energy Technology;

    Abstract : Ground Source Heat Pumps (GSHPs) have emerged as a promising technology for decarbonization of the heating sector. However, their increasing prevalence in densely populated areas may lead to considerable changes in the ground temperature, which can ultimately lead to reduced performance of the systems. READ MORE

  4. 2. District heating and cooling systems transition : Evaluation of current challenges and future possibilities

    Author : Marwan Abugabbara; Avdelningen för Installations- och klimatiseringslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multi-domain modelling; Modelica; Heat pumps; 5GDHC; BLTN; Validation;

    Abstract : District heating and cooling systems offer a cost-effective and secure supply of heating and cooling to connected buildings. They are widely recognised as a key solution to decarbonise the building sector due to their high potential of integrating renewable energy sources. READ MORE

  5. 3. State-of-the-art Integrated Refrigeration Systems in Supermarkets : An Energy Efficiency Evaluation Based on Field Measurements Analysis and Computer Simulations

    Author : Mazyar Karampour; Samer Sawalha; Björn Palm; Silvia Minetto; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon dioxide CO2 ; Supermarket; Supermarket refrigeration; Trans-critical cycle; Field meas-urements; Computer simulation; System integration; State-of-the-art; Heat recovery; Air condi-tioning; Reference HFC system; Geothermal energy storage; Energiteknik; Energy Technology;

    Abstract : Supermarkets have become a vital feature of modern society. However, they have significant impact on the environment due to the large amount of refrigerants needed in the refrigeration system, and due to the large energy use in the supermarket, they are the commercial buildings with highest energy intensity. READ MORE

  6. 4. Performance evaluations of high-temperature cooling systems in Mediterranean climate

    Author : Henrikki Pieskä; Christophe Duwig; Saqib Javed; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-temperature cooling; building energy simulations; exergy; Högtemperaturkyla; byggnadsenergisimuleringar; exergi; Strömnings- och klimatteori; Fluid and Climate Theory;

    Abstract : Cooling demand in Europe is predicted to grow 25-50% between 2020-2050. Meanwhile, the EU aims to lower the greenhouse gas emissions from its building stock by 60%. Therefore, it is essential to find solutions that can meet the growing cooling demand with less energy and integrate renewable energy sources. READ MORE

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

    Author : Marco Molinari; Folke Björk; Gudni Jóhannesson; Ivo Martinac; KTH; []
    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