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Thermo-Economic Evaluation of a Virtual District Heating Network Using Dynamic Simulation
Resimont, Thibaut; Sartor, Kevin; Dewallef, Pierre
2018
 

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Keywords :
Combined Heat & Power (CHP); District Heating Network (DHN); Dynamic modelling; Economic analysis; Waste incineration
Abstract :
[en] In the current context of energy transition, district heating systems are considered as a convenient yet efficient solution to reduce both primary energy consumption and greenhouse gases emissions. The use of locally available alternative heat sources, as for example the heat rejected by waste incinerators, constitutes an opportunity to valorize low-grade heat. Despite a higher initial investment cost, waste incinerators present the advantage to have a zero fuel cost that balances this initial capital expense. In the present contribution, a reference case study based on the IEA EBC Annex 60 framework is used as a first attempt to explore dynamic effects related to the distribution of heat through district heating networks. It consists of a small set of reference dwellings with different heating profiles depending on the type of buildings and their level of insulation. The costs for the different operating scenarios and the consequent advantages of a combined heat and power waste incinerator as a heat source are determined. This paper illustrates the use of a plug flow dynamic model intended to predict the heat transport delay, the heat losses and the pumping work due to long piping instead of the classical steady-state approach usually used for district heating networks profitability assessment. A comparative assessment of both the unit cost of heat and CO2 emissions savings is performed for two different heating technologies, namely a combined heat and power waste incinerator combined to backup boilers and a natural gas boiler.
Research center :
Université de Liège: Département d'aérospatiale et mécanique - Laboratoire de thermodynamique
Disciplines :
Energy
Author, co-author :
Resimont, Thibaut ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes de conversion d'énergie pour un dévelop.durable
Sartor, Kevin ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes de conversion d'énergie pour un dévelop.durable
Dewallef, Pierre ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes de conversion d'énergie pour un dévelop.durable
Language :
English
Title :
Thermo-Economic Evaluation of a Virtual District Heating Network Using Dynamic Simulation
Alternative titles :
[fr] Evaluation thermo-économique d'un réseau de chaleur virtuel en utilisant la modélisation dynamique
Publication date :
June 2018
Number of pages :
12
Event name :
ECOS2018: the 31st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Event place :
Guimaraes, Portugal
Event date :
17 au 22 juin 2018
Audience :
International
Name of the research project :
EcoSystèmePass: Étude et Conception d'un Outil de SYnthèse de Systèmes Thermodynamique pour l'Économie d'énergie et la mitigation des Émissions Polluantes de production de biomasse en Serres
Funders :
FEDER Tropical Plant Factory
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since 25 June 2018

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