Bindner, Henrik W.

Cai, Hanmin

You, Shi

Low Temperature District Heating (LTDH) has been investigated as a way of heat loss reduction and facilitating renewable energy integration. The technology is promising for space heating in well-insulated buildings, for example, those constructed in Nordhavn. However, LTDH alone is not sufficient for domestic water heating, which requires 50 °C for circulation and 60 °C as set point temperature for the storage tank due to hygiene concern. One solution is using electric heater at the house substation to increase tank water temperature. This setup also gives additional controllability for end users. Centre for Electric Power and Energy (CEE) at DTU has built a flexible heat system (FlexHeatSystem illustrated in Fig. 1) at DTU Risø Campus as combined heat and electricity research facility, which is also integrated into SYSLAB as part of the platform for Decentralized Energy Resources research. This experimental setup consists of three parts. District heating heat source is emulated by using a 22.5kW electric heater in Fig 2, which can supply hot water up to 85 °C. With the possibility of varying the supply water temperature,this heat source can be used to study both low and high temperature district heating scenarios. Electric heater in Fig. 3 is installed at the house substation inside a residential building, to boost the tank water to be over 55 °C when LTDH is assumed. Dump load installed next to the house substation as shown in Fig. 4 is used to simulate water draw scenarios and test whether water temperature at the tapping point can comply with national codes. Flow rate and temperature sensors are installed at selected points to measure energy flow and support controller design and verification We will study fuel-shift solution using this experimental setup. Research will firstly focus additional flexibility that local electrified heating alternatives can offer to the DH system while guarantee user comfort. Furthermore we will study its potential for providing ancillary services to power system. We will conclude with the research with fuel-shift feasibility and implications for industrial application

Online Research Database In Technology

  General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.   Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal  If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.         Downloaded from orbit.dtu.dk on: Mar 29, 2019An Experimental Setup for Investigating Flexibility of District Heating with Fuel ShiftCai, Hanmin; You, Shi; Bindner, Henrik W.Publication date:2018Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Cai, H., You, S., & Bindner, H. W. (2018). An Experimental Setup for Investigating Flexibility of District Heatingwith Fuel Shift. Abstract from International Conference on Smart Energy Systems and 4th Generation DistrictHeating, Aalborg, Denmark.   An Experimental Setup for Investigating Flexibility of District Heating with Fuel Shift   Mr. Hanmin Cai*, Dr. Shi You, Dr. Henrik W. Binder  Department of Electrical engineering, Technical University of Denmark, Elektrovej, 2800 Kgs. Lyngby, Denmark Mobil: 93 51 18 72, Email: hacai@elektro.dtu.dk Keywords: Energy integration; domestic hot water; fuel-shift; low-temperature-district-heating; flexibility; ancillary service Low Temperature District Heating (LTDH) has been investigated as a way of heat loss reduction and facilitating renewable energy integration. The technology is promising for space heating in well-insulated buildings, for example, those constructed in Nordhavn. However, LTDH alone is not sufficient for domestic water heating, which requires 50 °C for circulation and 60 °C as set point temperature for the storage tank due to hygiene concern. One solution is using electric heater at the house substation to increase tank water temperature. This setup also gives additional controllability for end users. Centre for Electric Power and Energy (CEE) at DTU has built a flexible heat system (FlexHeatSystem illustrated in Fig. 1) at DTU Risø Campus as combined heat and electricity research facility, which is also integrated into SYSLAB as part of the platform for Decentralized Energy Resources research.  This experimental setup consists of three parts. District heating heat source is emulated by using a 22.5kW electric heater in Fig 2, which can supply hot water up to 85 °C. With the possibility of varying the supply water temperature, this heat source can be used to study both low and high temperature district heating scenarios. Electric heater in Fig. 3 is installed at the house substation inside a residential building, to boost the tank water to be over 55 °C when LTDH is assumed. Dump load installed next to the house substation as shown in Fig. 4 is used to simulate water draw scenarios and test whether water temperature at the tapping point can comply with national codes. Flow rate and temperature sensors are installed at selected points to measure energy flow and support controller design and verification We will study fuel-shift solution using this experimental setup. Research will firstly focus additional flexibility that local electrified heating alternatives can offer to the DH system while guarantee user comfort. Furthermore we will study its potential for providing ancillary services to power system. We will conclude with the research with fuel-shift feasibility and implications for industrial application.                Hanmin Cai is currently a PhD student at DTU. He is working on demand side management to assist heat and electric network operation, and is involved in Nordhavn project. 

An Experimental Setup for Investigating Flexibility of District Heating with Fuel Shift

http://orbit.dtu.dk/ws/files/161879769/Pages_from_Book_of_abstracts_2017_3rd_International_Conference_on_Smart_Energy_Systems_and_4th.pdf

An Experimental Setup for Investigating Flexibility of District Heating with Fuel Shift

Abstract

Similar works

Full text

Available Versions

Online Research Database In Technology