District heating; Combined heat and power plant; Heat pump; Economic analysis; CO2 reductions
Abstract :
[en] Biomass Combined Heat and Power (CHP) plants connected to district heating networks are a very good opportunity to increase the share of renewable sources into energy systems. Frequently, important consumers are connected to ensure a stable base demand of heat throughout the year but they often have higher requirements in terms of temperature (i.e., steam) which involves high level of temperatures in the district heating network during the whole year and high levels of heat losses in the network.
This contribution presents the possibility to decrease the level of temperature at which the district heating network operates and to use high temperature heat pumps connected locally at the consumption point to produce steam when needed. An investigation of the global design and integration through thermodynamic simulation models is realized for the University of Liège district heating network. This study is intended to determine the heat pump coefficient of performance and, therefore, to assess the balance between the savings in terms of heat losses and the additional heat pump electricity consumption.
Disciplines :
Energy
Author, co-author :
Sartor, Kevin ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes de conversion d'énergie pour un dévelop.durable
Lemort, Vincent ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Dewallef, Pierre ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes de conversion d'énergie pour un dévelop.durable
Language :
English
Title :
Improved District Heating Network Operation by the Integration of High Temperature Heat Pumps
Publication date :
23 September 2013
Event name :
The 8th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES
Event place :
Dubrovnik, Croatia
Event date :
du 23 au 27 septembre 2013
Audience :
International
Main work title :
Digital proceedings of the 8th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES
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