Sökning: "Borehole heat exchangers"

Visar resultat 1 - 5 av 22 uppsatser innehållade orden Borehole heat exchangers.

1. 1. Construction and Validation of a Lab-scaleBorehole Thermal Energy Storage Model

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Haoyang Dong; [2022]
   Nyckelord :borehole heat exchanger; lab-scale model; experimental construction; experiment test; validation; borrhålsvärmeväxlare; labbmodell; experimentell konstruktion; experimenttest; validering;

   Sammanfattning : Borehole heat exchangers are widely used in heat pumps of residential buildings and industrialsystems. It is known as one of the most energy ecient technologies which provides heatingand cooling by using sustainable geothermal energy. The life time of borehole heat exchangerslasts more than 50 years which is longer than combustion boilers. LÄS MER

3. 2. Data center cooling solutions : A techno-economical case study of a data center in Sweden

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Joel Sjökvist; Fredrik Magnusson; [2022]
   Nyckelord :Energy systems; Data center cooling; Free cooling; Air cooling; Geothermal cooling; Mechanical cooling; District cooling; Building conversion; Dry cooler; Cooling machine; Borehole; PUE;

   Sammanfattning : Given the coinciding growth-trend in the production of consumer electronics and generation of data, the increase in server halls and data centers, as a means for hosting storage capacity for the generated data, has been prominent over the last decades. The establishment of data centers in already existing infrastructure can entail major changes in terms of energy system design. LÄS MER

4. 3. Performance Evaluation of Ground Heating and Cooling Systems - Long-term performance measurements of two case buildings

   Master-uppsats, Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

   Författare :Hao Liu; Hongyi Zhang; [2020]
   Nyckelord :Ground source heat pump GSHP ; System performance; Long-term monitoring; Geothermal; Borehole heat exchangers; Office building; Uncertainty analysis; Deep Green Cooling; Free cooling; Heating; Cooling; Technology and Engineering;

   Sammanfattning : Geothermal energy is one of the oldest and most sustainable energy sources and has been used for thousands of years. The temperature of the ground at shallow depth is fairly constant, above the air temperature in winter and lower than the ambient temperature in summer. LÄS MER

5. 4. Återladdningsförmågan hos en Bergvärmepump

   Uppsats för yrkesexamina på grundnivå, Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

   Författare :Felix Johansson; [2020]
   Nyckelord :;

   Sammanfattning : Geothermal energy that is being used for space heating with help of heat pumps is getting more and more common. In Sweden 2016, there was over 300 000 different facilities using geothermal energy with the help of bore hole heat exchangers, so called ground source heat pumps (GSHP). LÄS MER

7. 5. Modelling the performance of heat pump systems for single-family house applications

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Mar Coronado Pons; [2019]
   Nyckelord :;

   Sammanfattning : Ground source heat pumps (GSHP) extracting the heat through borehole heat exchangers (BHEs) are an extremely efficient way to provide heating. Their performance is affected by the temperature of the thermal source: the ground; the higher it is the temperature of the ground, the higher their performance. LÄS MER