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 [...]
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. […]
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 [...]
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. […]
The energy price assessment performed in the document “D4.1 – Energy Price Assessment" provides a comprehensive review of the main heat production systems and primary energy sources associated with District Heating systems in Europe. Geothermal heat flow density in Europe. EC 2012. © EC, 2012. District heating (DH) systems are one of the most energy efficient heating systems in urban environments and they are also key systems in the de-carbonization of heating energy in European Cities. Renewable and waste heat sources are foreseen at the same time as de-carbonized heat sources and the way to guarantee competitive energy costs with limited influence of fossil fuel supply price volatility. To achieve this, conversion of DHs is needed. RELaTED will [...]
RELaTED project trifold. District heating is one of the most energy efficient systems to deliver heat in urban environments. Despite this fact, energy market requires a conversion of actual DH concept. This is the main objective of RELaTED concept, that will provide an innovative system of decentralized Ultra-Low Temperature (ULT) network solution that can pave the way for expanding and modernizing existing district heating networks. Find more information about RELaTED low temperature DH solutions in project dissemination materials. […]