High temperature borehole thermal energy storage - A case study [Elektronisk resurs]
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Malmberg, Malin (författare)
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International Ground-Source Heat Pump Association Research Conference 2018, March 27-29
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Mazzotti, Willem, 1991- (författare)
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Acuña, José, 1982- (författare)
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Lindståhl, Henrik (författare)
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Lazzarotto, Alberto (författare)
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Ground-Source Heat Pump (medarbetare)
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KTH Skolan för industriell teknik och management (ITM) (utgivare)
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KTH Skolan för industriell teknik och management (ITM) (utgivare)
- Publicerad: 2018
- Engelska.
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Ingår i: Research Conference Proceedings. ; 380-388
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Sammanfattning
Ämnesord
Stäng
- Combining High-Temperature Borehole Thermal Energy Storages (HT-BTES) with existing Combined Heat and Power (CHP) systems running on waste fuels seems to be a promising approach to increase the energy efficiency of district heating systems through recovery of excess heat summertime from the waste-to-energy operation. This paper presents a case study from Sweden where the potential for charging and discharging waste heat at 95°C from a CHP-plant in summer into and from a HT-BTES is investigated. The interaction between the HT-BTES and the CHP-plant has been simulated with the software tool TRNSYS using the DST (Duct Ground Heat Storage Model) and a number of other TRNSYS tools. The aim of the study has been to design the size and operation of the HT-BTES with regard to energy and power coverage. Several different potential system configurations are presented in this paper, with 1 300 to 1 500 boreholes of 300 m depth. The result shows that it is possible to retrieve around 93 GWh/year of stored heat winter time, with the use of heat pumps using ammoniac as refrigerant. The discharge temperatures from the BTES range between 40-60°C, and up to 70°C in the initial discharge period.
Ämnesord
- Engineering and Technology (hsv)
- Mechanical Engineering (hsv)
- Energy Engineering (hsv)
- Teknik och teknologier (hsv)
- Maskinteknik (hsv)
- Energiteknik (hsv)
Indexterm och SAB-rubrik
- High Temperature borehole thermal energy storage
- HT-BTES
- Ground Source Heat Pump
- GSHP
- TRNSYS
- Combined Heat and Power
- CHP
Inställningar
Hjälp
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