Overview
FrançaisABSTRACT
The article deals with centralized district heating system design. It presents the advantages and disadvantages of the main primary energy resources and different types of heat production facilities that can be used in centralized district heating systems. It describes, from the operational point of view, different types of thermal sub-stations. It also presents economic aspects of heat production and tariffs for centralized district heating systems.
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Read the articleAUTHORS
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Eduard MINCIUC: Senior Lecturer - Doctor of Engineering, POLITEHNICA University, Bucharest
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Ion-Sotir DUMITRESCU: Senior Lecturer - Doctor of Engineering, POLITEHNICA University, Bucharest
INTRODUCTION
District heating is the name given to the distribution of heat to a number of buildings in a city, district or housing complex, using a heating fluid circulating in a network of pipes.
In recent years, there has been a tendency to refer to these installations as heat networks, but it is preferable to reserve this name for the network itself, i.e. the heating fluid transport pipes that link the heat source to the substations (points where heat is delivered to users).
The article "Heat networks. Transport"
The advantages and disadvantages of distribution by heat networks
are discussed at
of power to be supplied to the network ;
a load curve giving the power to be supplied to the grid over the course of a year as a function of the calendar;
rated flow curve showing the number of hours during the year when a given percentage of the maximum installed power was supplied;
load factor, ratio of the sum of power demanded by users at a given time to the sum of subscribed power;
instantaneous efficiency, ratio of the power supplied to all users to that supplied to the network at the same instant;
average annual yield: ratio of the sum of annual consumption by customers to that supplied to the network over the same period.
District heating systems, which use high-pressure, high-temperature fluids and distribute them across the public domain and residential buildings, must take into account the potential hazards these fluids may present: installations must be built in compliance with all applicable regulations, and every effort must be made to ensure safety.
Users are generally the occupants of premises heated by district heating via centralized and/or individual...
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KEYWORDS
power plants | | | | heat | combined heat and power
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Bibliography
Regulations
Directive 2003/87/EC of the European Parliament and of the Council of 13 October 2003 establishing a scheme for greenhouse gas emission allowance trading within the Community and amending Council Directive 96/61/EC.
Directive 2006/32/EC of the European Parliament and of the Council of April 5, 2006 on energy end-use efficiency and energy services and repealing Directive 93/76/EEC.
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