Innovative delivery: A 60/35 district heating system

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1 Innovative delivery: A 60/35 district heating system Dr Anton Ianakiev Nottingham Trent University Andrew Filer Enviroenergy, Nottingham

2 EUROPEAN INNOVATION PARTNERSHIP ON SMART CITIES AND COMMUNITIES CITYkeys (SCC2) REMOURBAN GROWSMARTER TRIANGULUM New SCC1 WP 2015 STANDARDS (SCC3) SCC1 SCC1 SCC1 SCC1 SMART CITIES INFORMATION SYSTEM (SCIS)

3 Integration of: Energy Transport ICT Three EU cities: - Valladolid (Spain) - Nottingham (UK) - Eskisehir (Turkey) Two follower cities: - Seraing (Belgium) Miskolc (Hungary) 6M Eu for Nottingham over 5 years 3

4 REMOURBAN project The area around Sneinton Road, Sneinton, Nottingham is considered as the most appropriate for the development of the REMOURBAN (DEMO site). The site is very close to the existing district heating. The pipe line is reaching the Bio City which is very close to Sneinton Road ( m). A large number of the properties (65%) in the area are social housing, owned by Nottingham City Council (NCC) and managed on their behalf by Nottingham City Homes (NCH). 4

5 Advantages of Low Temperature District Heating reduce the network supply temperature down to consumer required temperature level heat supply can be diversified by utilisation of industrial excess heat, geothermal heat and renewables like solar thermal, reduced network heat loss by up to 75% comparing with the current system, reduced thermal stress in steel pipes and possibility to use other pipe materials, reduce the risk of water boiling in the network and two phase flow in pumps and other equipment.

6 Maisonettes at Morley Court

7 The application of pre-fabricated panels to a system built construction

8 Nottingham s existing extensive EfW district heating network, currently supplying 4,900 homes close to the Demo site, means that there is an opportunity to supply the blocks with an efficient and low-carbon heating supply. It is proposed that a branch emanating from the return pipe of the primary mains is created to use low temperature heating from the return the first time on this system and maybe in the UK.

9 The heat energy mainly comes from the annual incineration of around 170,000 tonnes of municipal waste at Eastcroft incinerator The Nottingham District Energy Network is comprised of approximately 68km of insulated pipework carrying pressurised hot water around Nottingham City Centre satisfy the heating and hot water requirements of circa 4,900 dwellings and over 100 commercial premises It is a Combined Heat and Power (CHP) Plant, the steam is also run through a generating turbine to produce 60,000MWh of electricity annually.

10 The key environmental benefits are as follows: Energy-from-Waste (EfW) largely removes the requirement for Nottingham and surrounding Boroughs to landfill refuse, removing the associated emissions; Waste analysis data for the EfW plant indicates that around 61% by weight, arises from renewable Biomass media; Our heat customers receive a far more efficient energy supply than those with gas boiler systems, as they only receive 'useful energy'; The Combined Heat and Power (CHP) plant integrates the production of both usable heat and power (electricity) into one single, highly efficient process. In contrast, the heat produced as a by-product of generating electricity at a traditional power station is mostly wasted; Enviroenergy participates in TRIAD avoidance, helping the National Grid meet periods of high demand; The District Energy Scheme offsets approximately 27,000 tonnes of CO 2 emissions annually that would otherwise be produced by alternative use of gas.

11 Enviroenergy Nottingham LTDH network planning map

12 Existing high temperature plantroom Proposed low temperature plantroom Proposed high temperature pipework extension Proposed low temperature pipework umbilical connections

13 The individual properties will be fitted with a domestic heat interface unit (HIU) to provide thermostatically controlled instantaneous hot water and heating supplies in each flat. The water within each property is hydraulically separated from the supply from the district heating heat exchange unit. The HIU will be fitted with a MID rated class 2 meter to measure, and bill, the energy used within the property.

14 The EE Monitor is smart and adaptable multi-functional device for use inside each home to show how much heat energy is being used and what it costs. The EE Monitor gives control to the user ensuring they have the information they need to budget for and manage their energy consumption. The monitor is simple to install and easy to retrofit, with an Ethernet and a GSM solution available. The monitoring and credit control services have been developed with the needs of landlords in mind that debt exposure is minimised and where there is existing debt this can be recovered gradually through a debt recovery service

15 Conclusion The LTDH at Nottingham demo site will prioritise the end users demand, such as what thermal comfort they need, and aims to find the most economical way to satisfy these needs through efficient distribution networks and energy sourced from waste heat. Intelligent control will be embedded in all LTDH associated stages, from generation and distribution to substation and end-user metering. In order to maintain high efficiency of the network it is important to achieve consistently low return temperature and high T which will reduce the volume flow rates leading to smaller pipes and lower costs. A top-up shortcut from the primary flow mains of the existing DH connection will be included to act as a temperature boost for the supply water to this project. This will mitigate the risk of flow water temperature being below the required temperature. The REMOURBAN project provides the opportunity to set up the first substantial Low Temperature District Heating scheme in the UK.