The Impact of Optimal Demand Response Control and Thermal Energy Storage on a District Heating System

Sonja Salo, Aira Hast, Juha Jokisalo, Risto Kosonen, Sanna Syri, Janne Hirvonen and Kristian Martin
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Sonja Salo: Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Helsinki, Finland
Aira Hast: Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Helsinki, Finland
Juha Jokisalo: Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Helsinki, Finland
Risto Kosonen: Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Helsinki, Finland
Sanna Syri: Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Helsinki, Finland
Janne Hirvonen: Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Helsinki, Finland
Kristian Martin: Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Helsinki, Finland

Energies, 2019, vol. 12, issue 9, 1-19

Abstract: Demand response has been studied in district heating connected buildings since the rollout of smart, communicating devices has made it cost-effective to control buildings’ energy consumption externally. This research investigates optimal demand response control strategies from the district heating operator perspective. Based on earlier simulations on the building level, different case algorithms were simulated on a typical district heating system. The results show that even in the best case, heat production costs can be decreased by only 0.7%. However, by implementing hot water thermal storage in the system, demand response can become more profitable, resulting in 1.4% cost savings. It is concluded that the hot water storage tank can balance district heating peak loads for longer periods of time, which enhances the ability to use demand response strategies on a larger share of the building stock.

Keywords: demand response; district heating; hot water storage; rule-based control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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