Browsing by Author "Verbeck, Moritz"

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Cost savings and CO2 emissions reduction potential in the German district heating system with demand response
(2022-01-25) Ju, Yuchen; Lindholm, Joakim; Verbeck, Moritz; Jokisalo, Juha; Kosonen, Risto; Janßen, Philipp; Li, Yantong; Schäfers, Hans; Nord, Natasa
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Demand response (DR) has been an effective technique to maximize the proportion of renewable energies integrated into energy supply systems. This article investigated the benefits of DR on three building types (apartment building, office building and cultural center) and analyzed DR impacts on operation, production costs and CO2 emissions of three district heating (DH) production scenarios. The results indicate that the application of DR cuts 2.8%-4.9% off heating costs for building owners based on different energy production scenarios and building types. From the perspective of DH producers, the large-scale application of DR reduces the total DH demand by 3.6% to 3.9%. It results in higher financial benefits, less CO2 emissions and optimization of energy production in all the analyzed scenarios. The maximum total energy generation cost-saving rate is 12.6%, and the CO2 emissions reduce at most 32.3% because of a more renewable production mix. Moreover, DR control increases the full load operation hours of the heat pump, leading to higher efficiency, and decreases the operation hours of the boilers, leading to less pollution. It indicates that the application of DR effectively decreases fossil fuel usage and improves the energy efficiency of DH systems.
Demand response in the German district heating system
(2023) Ju, Yuchen; Lindholm, Joakim; Verbeck, Moritz; Jokisalo, Juha; Kosonen, Risto; Janßenc, Philipp; Li, Yantong; Schäfers, Hans; Nord, Natasa
A4 Artikkeli konferenssijulkaisussa
The renewable energy share in energy supply systems is increasing for carbon neutrality. The realization of carbon neutrality can be supported by demand response (DR) strategies. This paper analyzed the DR control benefits of a German district heating (DH) system. For the first step, in German conditions, three building types were simulated by IDA-ICE software with and without a rule-based DR control. Secondly, a community was established based on the heat demand of the simulated buildings. This paper selected two different production scenarios. One scenario consisted by a biofuel CHP and gas boilers and the other one included a heat pump, an electric heater, and a solar thermal storage. After that, the production of the two scenarios with and without DR was optimized by the HGSO tool and it calculated the total production costs and CO2 emissions. It indicates that building owners and DH producers all earn benefits from the application of demand response. The maximum heating cost saving by DR is 4.9% for building owners. In the optimized two production scenarios, DH producers gain higher financial benefits and there are less CO2 emissions. The maximum total generation cost and CO2 emission savings are 12.6% and 8.6%, respectively.
Energy, cost and emission saving potential of demand response and peak power limiting in the German district heating system
(2023) Suhonen, Janne; Lindholm, Joakim; Verbeck, Moritz; Ju, Yuchen; Jokisalo, Juha; Kosonen, Risto; Janßen, Philipp; Schäfers, Hans
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
The demand response and peak power limiting could potentially reduce the peak power and energy demand. This study examines the effect of rule-based demand response and peak power limiting on the peak power and energy demand of heating. Study was conducted as a co-simulation where buildings and district heating production were simulated separately but both inclusively. Results indicate that demand response provides 2.8–4.7% energy saving and 2.3–3.4% total district heating cost saving potential. Moreover, according to the simulations, demand response provides 32% emission reduction in district heating production in contrast to the reference case. Peak power limiting provides significant reduction in the peak power and district heating base cost. However, its ability to provide additional reduction in the energy demand and emissions is confined compared to the demand response due to the effective time of the limit. Chosen acceptable temperature range can be maintained decently.
Simulation of demand response on buildings and district heating production
(2022-12-01) Ju, Yuchen; Lindholm, Joakim; Verbeck, Moritz; Jokisalo, Juha; Kosonen, Risto; Janßenc, Philipp; Li, Yantong; Schäfers, Hans; Nord, Natasa
A4 Artikkeli konferenssijulkaisussa
Demand response (DR) has effectively maximized renewable energies integrated into energy supply systems. This paper investigated DR benefits on three building types and the district heating (DH) production of a community consisted by these buildings in German conditions. Firstly, the buildings and the DH production were simulated without DR by tools IDA-ICE and HGSO, separately. Secondly, the three buildings were simulated by a rule-based DR control. After that, the tool HGSO calculated the total production costs and CO2 emissions based on the power demand with DR. The results show 2.8%-4.8% heating cost savings by DR for different building types. For DH producers, DR application reduces the total DH demand and CO2 emissions by 3.8% and 32.3 %, respectively.