How can low temperature concepts be applied in new urban developments? The RELaTED Task 2.5 describes a set of guidelines that are, in general terms, based on best practices as most new urban development areas are different in relation to visions, DH network topology, temperature levels, buildings installations, tariff structure, management etc. […]
Use of low and ultra-low DH temperatures, that proposes RELaTED project, results in an increase of the energy efficiency of the heating system. However, the low temperatures in general also increase the risk of Legionella. This emphasizes the need of finding safe Legionella solutions for the domestic hot water (DHW) production from district heating (DH). Focus has been on both large installations in multi-family houses and commercial buildings often using a storage tank for hot water, and for smaller installations in one-family houses or in each flat in newer multi-storey houses with instantaneous heating by a heat exchanger. A survey of various challenges and solutions can be found in the IEA Guidebook “Future Low Temperature District Heating Design Guidebook” from [...]
District heating companies, equipment manufacturers, consultants and researchers have discussed definitions of district heating and cooling in general, and also ultra-low temperature district heating. This inform explains the different definitions and most used terms to give the reader not familiar with district heating the background of this system and the technology options. DOWNLOAD THIS DOCUMENT >> Photo by Pixabay from Pexels In the report "Benchmark for performance levels" (C. H. Christiansen, N. Winther, Ecoheat Cities WP2-report, 2012), the following indicative temperature levels and definitions were specified: DH High Temperature System (HT), 100/50 °C DH Low Temperature System (LT), 80/40 °C DH Very Low Temperature System (VLT), 60/30 °C DH Ultra Low Temperature System (ULT), 45/30 °C District cooling [...]
Michaela Meir, R&D manager from Aventa and leader of work package 3 in RELaTED project, explains at this video the solution that this Norwegian company is developing in this project. Both the Spanish company IMAR and Aventa are developing solar collector systems for heating. Aventa’s innovation in RELaTED is that these collector systems are decentralized at the end-user side using the district heating network as storage. The final aim is to install the developed technologies at the RELaTED demo sites. Aventa has developed and produced an all-polymeric solar collector of modular design and flexible in dimensions for building integration. Aventa has pioneer in the delivery of solar thermal collectors fully constructed in polymeric structured sheets. Due to mass production processes [...]
This document presents the use of distributed energy sources and the possibilities for integration and control in district heating systems. The report also explains the legal and practical barriers and solutions as well as pricing options for energy sales. […]
Ljubiša Vladić, Deputy of Production and Distribution Manager at Public Utility Company Beogradske Elektrane, describes the participation and main goals of this Serbian district heating company in RELaTED project. Know more about the contribution of one of the main district heating companies in this recording:
This document elucidates specific problems and solutions for consumer connections in relation to legionella bacteria prevention and treatment, metering and billing options and control opportunities. Moreover, sketches that could be used as specific solutions for consumer interconnection schemes for three of the demonstration sites on public networks in the project are presented. DOWNLOAD THIS DOCUMENT >> The report is a continuation of the report “Low temperature concepts” and is part of a set of reports that define the system architecture of the RELaTED concept. Distribution of Legionnaries’ disease cases per 100.000 population in the EU/EEA countries, 2016. Source: Surveillance report Legionnaires’ disease. In RELaTED Task 2.2 the design and control challenges for connections for ULT DH consumers are [...]
In this video, Kasper Korsholm Østergaard, PhD, R&D Manager at METRO THERM A/S explains some details of their contribution to the RELaTED project ultra low temperature district heating concept. METRO THERM is a Danish-based company with a long tradition in the production of district heating units and heat pumps. METRO THERM is also one of the 14-companies which have coordinated their interests, technologies and investment roadmaps to develop, deploy and test the RELaTED project concept. The most relevant part of the RELaTED project for METRO THERM is the development of a triple function substation and the use of a microbooster heat pump in ultra low temperature district heating.
DH systems were designed many decades ago. In most cases, they are designed and operated to distribute heat at about 80 °C to consumers. RELaTED pursues the development of DH networks with service temperature levels as low as 40-50 ºC. “D.2.1 Low temperature concepts” deliverable reports on the RELaTED low temperature concepts, considering potentialities and limitations imposed by distributed energy sources (DER), low temperature (LT) and ultra-low temperature (ULT) distribution systems as well as heat and domestic hot water demand. DOWNLOAD THIS DOCUMENT >> Operational small corporate DH network in Iurreta (Basque Country, Spain). In RELaTED Task 2.1 the low temperature district heating concept is being defined, and some of the possibilities for integrating distributed energy recourses into [...]
The deliverable D.2.1 “Low temperature concepts” defines the RELaTED low temperature concepts, considering potentialities and limitations imposed by distributed energy sources (DER), low temperature (LT) and ultra-low temperature (ULT) distribution systems as well as heat and domestic hot water demand. […]