scholarly journals Lessons Learnt from Substation Inspection on Low Temperature District Heating Networks

2021 ◽  
Vol 11 (1) ◽  
pp. 33
Author(s):  
Antonio Garrido-Marijuan ◽  
Olaia Eguiarte ◽  
Roberto Garay-Martinez ◽  
Margus Raud ◽  
Indrek Hagu
Keyword(s):  
Low Temperature ◽  
District Heating ◽  
Lessons Learnt ◽  
New Generation ◽  
The City ◽  
Heating Networks

District heating networks are considered to be a key element for the decarbonization of Europe. The RELaTED project seeks to contribute to the decarbonization of these infrastructures with the demonstration of low temperature district heating networks. One of the demonstration sites consists of more than 50 substations within a subsection of a larger network in the city of Tartu (Estonia), where the temperature was lowered by 10 °C. To ensure the benefits of this new generation district heating network and the fulfillment of comfort requirements, data have been monitored and analyzed at the substation level in an automatic way to facilitate the inspection of every user.

scholarly journals RELaTED Project: New Developments on Ultra-Low Temperature District Heating Networks

Proceedings ◽  
2020 ◽  
Vol 65 (1) ◽  
pp. 25
Author(s):  
Antonio Garrido Marijuan ◽  
Roberto Garay ◽  
Mikel Lumbreras ◽  
Víctor Sánchez ◽  
Olga Macias ◽  
...  
Keyword(s):  
Low Temperature ◽  
High Performance ◽  
Waste Heat ◽  
District Heating ◽  
Hot Water ◽  
Thermal Systems ◽  
Heating Source ◽  
Wide Range ◽  
Thermal Sources ◽  
Heating Networks

District heating networks deliver around 13% of the heating energy in the EU, being considered as a key element of the progressive decarbonization of Europe. The H2020 REnewable Low TEmperature District project (RELaTED) seeks to contribute to the energy decarbonization of these infrastructures through the development and demonstration of the following concepts: reduction in network temperature down to 50 °C, integration of renewable energies and waste heat sources with a novel substation concept, and improvement on building-integrated solar thermal systems. The coupling of renewable thermal sources with ultra-low temperature district heating (DH) allows for a bidirectional energy flow, using the DH as both thermal storage in periods of production surplus and a back-up heating source during consumption peaks. The ultra-low temperature enables the integration of a wide range of energy sources such as waste heat from industry. Furthermore, RELaTED also develops concepts concerning district heating-connected reversible heat pump systems that allow to reach adequate thermal levels for domestic hot water as well as the use of the network for district cooling with high performance. These developments will be demonstrated in four locations: Estonia, Serbia, Denmark, and Spain.

Heat Pump Efficiency in fifth Generation Ultra-Low Temperature District Heating Networks using a Wastewater Heat Source

Energy ◽  
2021 ◽  
pp. 121318
Author(s):  
Tobias Reiners ◽  
Michel Gross ◽  
Lisa Altieri ◽  
Hermann-Josef Wagner ◽  
Valentin Bertsch
Keyword(s):  
Low Temperature ◽  
Heat Source ◽  
Heat Pump ◽  
District Heating ◽  
Pump Efficiency ◽  
Fifth Generation ◽  
Heating Networks

scholarly journals Assessing the techno-economic impact of low-temperature subnets in conventional district heating networks

2017 ◽  
Vol 116 ◽  
pp. 260-272 ◽  
Author(s):  
J.F. Castro Flores ◽  
B. Lacarrière ◽  
J.N.W. Chiu ◽  
V. Martin
Keyword(s):  
Low Temperature ◽  
Economic Impact ◽  
District Heating ◽  
Heating Networks

scholarly journals A review of low-temperature sub-networks in existing district heating networks: examples, conditions, replicability

2021 ◽  
Author(s):  
Stefan Puschnigg ◽  
Gabriela Jauschnik ◽  
Simon Moser ◽  
Anna Volkova ◽  
Matthias Linhart
Keyword(s):  
Low Temperature ◽  
District Heating ◽  
Heating Networks

scholarly journals Evaluation of integration of solar energy into the district heating system of the city of Velika Gorica

2016 ◽  
Vol 20 (4) ◽  
pp. 1049-1060 ◽  
Author(s):  
Andreu Felipe ◽  
Daniel Schneider ◽  
Goran Krajacic
Keyword(s):  
Low Temperature ◽  
District Heating ◽  
Economic Assessment ◽  
Heating System ◽  
Solar Heating ◽  
District Heating System ◽  
High Penetration ◽  
The City ◽  
Heating Plant ◽  
Reduction Of Costs

In the current situation the district heating system supplies the 32% of the total thermal consumption in the City of Velika Gorica. The main issue in the district heating system is the utilization of 14 small and distributed heat plants, each providing heat to a separate and individually disconnected heating grid. Reduction of costs and CO2 emissions can be reached with a high penetration of renewable sources. The aim of this paper is to evaluate and design the integration of a Central Solar Heating Plant with Seasonal Storage into the district heating system of the City. An economic assessment was made with a pessimistic and an optimistic prediction of the solar heat cost for ground mounted collectors and roof mounted collectors. The seasonal storage was chosen to be pit thermal energy storage; the system was modeled as a low-temperature district heating system with the real thermal demands of a district heating plant.

The role and costs of large-scale heat pumps in decarbonising existing district heating networks – A case study for the city of Herten in Germany

Energy ◽  
2019 ◽  
Vol 180 ◽  
pp. 918-933 ◽  
Author(s):  
Eftim Popovski ◽  
Ali Aydemir ◽  
Tobias Fleiter ◽  
Daniel Bellstädt ◽  
Richard Büchele ◽  
...  
Keyword(s):  
Large Scale ◽  
District Heating ◽  
Heat Pumps ◽  
The City ◽  
Heating Networks

Evaluating the cost of heat for end users in ultra low temperature district heating networks with booster heat pumps

Energy ◽  
2018 ◽  
Vol 153 ◽  
pp. 788-800 ◽  
Author(s):  
Jacopo Vivian ◽  
Giuseppe Emmi ◽  
Angelo Zarrella ◽  
Xavier Jobard ◽  
Dirk Pietruschka ◽  
...  
Keyword(s):  
Low Temperature ◽  
District Heating ◽  
Heat Pumps ◽  
End Users ◽  
The Cost ◽  
Heating Networks

Modeling low temperature district heating networks for the utilization of local energy potentials

Bauphysik ◽  
2016 ◽  
Vol 38 (6) ◽  
pp. 372-377 ◽  
Author(s):  
Karl Martin Heissler ◽  
Laura Franke ◽  
Isabell Nemeth ◽  
Thomas Auer
Keyword(s):  
Low Temperature ◽  
District Heating ◽  
Local Energy ◽  
Heating Networks
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