Utilizing thermal building mass for storage in district heating systems: Combined building level simulations and system level optimization

Dominković, Dominik Franjo; Gianniou, Panagiota; Münster, Marie; Heller, Alfred; Rode, Carsten

doi:10.1016/j.energy.2018.04.093

Cited by 89 publications

(55 citation statements)

References 24 publications

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“…To achieve some effect in heat production by controlling the DR, there must be a lot of power within the DR, which means there is a need for a number of buildings using a DR service. A redeeming feature is that the DR usage level can be quite high as the residential buildings store heat well, which means that the mass of the building cools down slowly [13,[16][17][18][19][20][21]. It can be seen in the field test that a couple of hours without heating do not have any notable effect on indoor air conditions, and with the help of DR production can be optimized during as much as 33 percent of the day without causing discomfort to customers.…”

Section: Smart Interaction Between Buildings and Energy System Emissionsmentioning

confidence: 99%

“…The benefit of this for a service user is that there are no service fees at all. Dominkovic et al stated in [20] that in 2029 the benefits of using short-term Thermal Energy Storage (TES) is greater through the increased amount of intermittent generation that can be integrated into the DH system, which implies that the demand for DR implementations may rise in the near future. There is an existing need for further studies, especially in the integration of the available building automation systems and field-tested DR.…”

Section: Economic Feasibility Of the Studied Dr System From Stakeholdmentioning

confidence: 99%

“…Heat demand variations in DH systems, however, produce problematic conditions for efficient heat generation. Therefore, a number of papers have concentrated on buildings' potential for storing heat in district heating systems [13,[16][17][18][19][20][21]. Several pilot projects with DH DR have been conducted in Finland or Sweden.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Demand Response in District Heating Market—Results of the Field Tests in Student Apartment Buildings

Ala-Kotila

Vainio

Heinonen³

2020

Smart Cities

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This article presents the field test of the developed demand response system installed in the central heating systems of existing apartment buildings. The buildings are occupied by students and located in Tampere, Finland, which is within the northern climate zone. The studied buildings are connected to the local district heating network. The presented demand response system takes into account weather forecasts, indoor temperatures and decreases in space heating temperatures when demand for domestic hot water is the highest. The owner of the buildings benefits from peak demand control and can save in fixed fees. If enough buildings would have this kind of demand response control system, there would be a decreased need for utility companies to use peak power plants that typically use fossil fuels for heat production. In this field test, the peak load decrease was 14%–15% on average. During the test, the heating period of February and March, the normalized energy consumption of eight buildings was reduced by 11%, which represents a 9% annual cut in energy, costs and greenhouse gas emissions. Demand Response (DR) heating aims to help in reaching the objectives of the National Energy and Climate Strategy for 2030.

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Section: Smart Interaction Between Buildings and Energy System Emissionsmentioning

confidence: 99%

Section: Economic Feasibility Of the Studied Dr System From Stakeholdmentioning

confidence: 99%

See 1 more Smart Citation

Demand Response in District Heating Market—Results of the Field Tests in Student Apartment Buildings

Ala-Kotila

Vainio

Heinonen³

2020

Smart Cities

View full text Add to dashboard Cite

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“…Generally, there are four main flexibility sources in an energy system: Transmission capacity to neighbouring areas for import/export of electricity, energy storage, demand response, and power-to-heat or power-to-gas technologies [41]. In this paper, the value of energy storage and power-to-heat flexibility sources in meeting carbon and fuel reduction goals was investigated.…”

Section: Discussionmentioning

confidence: 99%

Integrated Energy Planning with a High Share of Variable Renewable Energy Sources for a Caribbean Island

et al. 2018

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Abstract:Although it can be complex to integrate variable renewable energy sources such as wind power and photovoltaics into an energy system, the potential benefits are large, as it can help reduce fuel imports, balance the trade, and mitigate the negative impacts in terms of climate change. In order to try to integrate a very large share of variable renewable energy sources into the energy system, an integrated energy planning approach was used, including ice storage in the cooling sector, a smart charging option in the transport sector, and an excess capacity of reverse osmosis technology that was utilised in order to provide flexibility to the energy system. A unit commitment and economic dispatch tool (PLEXOS) was used, and the model was run with both 5 min and 1 h time resolutions. The case study was carried out for a typical Caribbean island nation, based on data derived from measured data from Aruba. The results showed that 78.1% of the final electricity demand in 2020 was met by variable renewable energy sources, having 1.0% of curtailed energy in the energy system. The total economic cost of the modelled energy system was similar to the current energy system, dominated by the fossil fuel imports. The results are relevant for many populated islands and island nations.

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“…Other research using building thermal mass for energy reduction have been well documented [6][7][8][9][10][11][12][13]. The thermal inertial of a building is one of the controlling factors for the phase shift and amplitude reduction of "heat flow fluctuations" associated with the building's internal temperature response due to weather [11].…”

Section: Introductionmentioning

confidence: 99%

Building Energy Management Using Increased Thermal Capacitance and Thermal Storage Management

et al. 2018

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This study simulates an increased thermal capacitance (ITC) and thermal storage management (TSM) system to reduce the energy consumed by air conditioning and heating systems. The ITC/TSM is coupled with phase change materials (PCM), which enable tank volume reduction. The transient energy modeling software, the Transient System Simulation Tool (TRNSYS), is used to simulate the buildings' thermal response and energy consumption, as well as the ITC/TSM system and controls. Four temperature-controlled operating regimes are used for the tank: building shell circulation, heat exchanger circulation, solar panel circulation, and storage. This study also explores possible energy-saving benefits from tank volume reduction such as losses associated with the environment temperature due to tank location. Three different tank locations are considered in this paper: outdoor, buried, and indoor. The smallest tank size (five gallons) is used for indoor placement, while the large tank (50 gallons) is used either for outdoor placement or buried at a depth of 1 m. Results for Atlanta, Georgia show an average 48% required energy decrease for cold months (October-April) and a 3% decrease for warm months (May-September) for the ITC/TSM system with PCM when compared with the reference case. A system with PCM reduces the tank size by 90% while maintaining similar energy savings.

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Utilizing thermal building mass for storage in district heating systems: Combined building level simulations and system level optimization

Cited by 89 publications

References 24 publications

Demand Response in District Heating Market—Results of the Field Tests in Student Apartment Buildings

Demand Response in District Heating Market—Results of the Field Tests in Student Apartment Buildings

Integrated Energy Planning with a High Share of Variable Renewable Energy Sources for a Caribbean Island

Building Energy Management Using Increased Thermal Capacitance and Thermal Storage Management

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