image:Wärmeübergabestation 300 kW.jpg, A district heating substation in a residential neighborhood with a thermal capacity of 300 kW. Two components of the heat meter are visible: the metering electronics unit on the right (white/blue box), and the ultrasonic flow meter in the center (bronze tube).
A district heating substation is a component in a district heating system that connects the main network to a building's own heating system.
Presentation: GUIDELINES FOR DISTRICT HEATING SUBSTATIONS
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The station normally has one or more of the following parts:
* Heat exchanger
A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contac ...
- to split primary and secondary side of the system
* Control valve
A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. This enables the direct control of flow rate and the consequential control of process quantities such as pres ...
- to regulate the flow through the heat exchanger
A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contac ...
* Differential pressure controller - to balance the network and improve working conditions of control valve
* Strainer - to remove particles that could block heat exchanger or control valve
* Shut off valve - to stop the flow on primary side in case of service or emergency
* Heat meter
A heat meter attached to a heat exchanger in a District heating substation in a residential neighborhood. Right in white-blue: the calculator; in the center in bronze: the ultrasonic flow meter
A heat meter or energy meter is a device which mea ...
- to measure energy consumption
Energy consumption is the amount of energy used.
Biology
In the body, energy consumption is part of energy homeostasis. It derived from food energy. Energy consumption in the body is a product of the basal metabolic rate and the physical activity ...
and allocate costs
* Temperature controller - to control temperature on secondary side by regulating the flow on primary side
* Temperature sensor - to sense flow and return temperatures required for temperature control
In addition, a district heating substation may also include:
* Pump
* Safety valve
* Manometer
Pressure measurement is the measurement of an applied force by a fluid (liquid or gas) on a surface. Pressure is typically measured in units of force per unit of surface area. Many techniques have been developed for the measurement of pressur ...
* Non-return valve
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.
Check valves are two-port valves, meaning they have t ...
References
External links
Heating Technology
{{DEFAULTSORT:District Heating Substation
District heating