Sökning: "ground heat"

Visar resultat 1 - 5 av 102 avhandlingar innehållade orden ground heat.

1. 1. Capacity-controlled Ground Source Heat Pump Systems for Swedish single-family dwellings

   Författare :Hatef Madani; Per Lundqvist; Joachim Claesson; Jose Miguel Corberan Salvador; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Heat Pump; Capacity control; ground; ground source; geothermal;

   Sammanfattning : The overall objective of this thesis is to develop a structured method to approach the challenge of better understanding the techniques and potential for capacity control in Ground Source Heat Pump (GSHP) systems used in Swedish single-family dwellings. This thesis aims at development of a generic model of the system that can be used for comparative, descriptive, and predictive analysis of capacity controlled GSHP systems in single-family dwellings. LÄS MER

3. 2. Design of ground source heat pump systems. Thermal modelling and evaluation of boreholes

   Författare :Saqib Javed; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ground-coupled; optimization; simulation; borehole; Ground source heat pump; ground heat exchanger; thermal response test; fluid temperature; sensitivity analysis;

   Sammanfattning : Ground source heat pump systems are fast becoming state-of-the-art technology to meet the heating and cooling requirements of the buildings. These systems have high energy efficiency potential which results in environmental and economical advantages. LÄS MER

4. 3. Direct Ground Cooling Systems for Office Buildings

   Författare :Taha Arghand; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ground heat exchangers; Energy renovation; Renewable energy; GeoTABS; Active chilled beams; Geocooling systems; TABS; ground-coupled cooling; Passive ground cooling; Thermal comfort; Direct ground cooling; Energy efficiency; Boreholes; Ceiling cooling panels; High-temperature cooling; Optimization; Comfort cooling;

   Sammanfattning : The solving of crucial global energy challenges hinges on improving energy efficiency in building energy systems. Accomplishing energy-efficiency targets often entails incorporating sustainable energy sources into the energy supply system. LÄS MER

5. 4. Thermal modelling and evaluation of borehole heat transfer

   Författare :Saqib Javed; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ground source heat pump; fluid temperature; borehole; short-term; thermal response test; groundwater-filled; optimization; load aggregation; simulation; recovery; step-response; long-term; ground heat exchanger; times; design; ground-coupled;

   Sammanfattning : The use of ground source heat pump systems to provide heating and cooling inbuildings has increased greatly in the last decade or so. These systems have a highpotential for energy efficiency, which has environmental and economicadvantages. LÄS MER

7. 5. Solar Colletors Combined with Ground-Source Heat Pumps in Dwellings - Analyses of System Performance

   Författare :Elisabeth Kjellsson; Avdelningen för Byggnadsfysik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heating in dwellings; TRNSYS simulations; solar collectors; ground-source heat pumps; ground heat;

   Sammanfattning : The use of ground-source heat pumps for heating buildings and domestic hot water in dwellings is increasing rapidly in Sweden. The heat pump extracts heat from the ground by a U-pipe in a vertical borehole. In order to reduce the electricity demand in the system, the combination with solar collectors is introduced. LÄS MER