Thermal network exchange rate project

Contents

Source Data

1. Climatic conditions of the city

2. Determination of estimated hourly heat consumption for heating, ventilation and hot water supply

3. Construction of annual schedule of heat consumption by duration of ambient air temperatures

4. Selection of heat supply system

5. Hydraulic calculation of the main main line of the heat network and one branch nearest to the CHP

6. Total schedule of heat network regulation

7. Construction of piezometric graphs of the main heating network line and branches for winter and summer operation modes

8. Selection of network pumps

9. Determination of makeup water volume. Selection of make-up pumps

10. Selection of main network heaters and peak hot water boilers at the CHP

11. Calculation of loads acting on fixed support

12. Calculation of the rotation angle of the heating line operating for self-compensation

13. Calculation of gland compensator

14. Selection of thermal insulation design and calculation of the thickness of the main thermal insulation layer for the head section of the thermal network

15. Selection of main equipment for CTP

Selection of heat supply system

Heat supply scheme - closed dependent (on assignment).

The diagram of connection of hot water heaters in closed heat supply systems is accepted mixed according to the task.

Water temperature in the giving wasps T1r =150 highway

Water temperature in the OS return T2r =70 highway

Construction of piezometric graphs of the main heating network line and branches for winter and summer operation modes

In closed heat supply systems, the flow rate of water in both pipelines of the heat network during the entire heating period and over the time of day is almost unchanged, so the piezometric graph is symmetrical about the axis of symmetry. Therefore, it is enough for us to build symmetrical piezometers of summer and winter operating modes in the project.

The following requirements shall be taken into account when constructing a piezometric graph:

- maximum head in the return pipeline shall not exceed 60 m of water. in dynamic and static modes;

- head in the return pipeline and static level shall ensure filling of building heating systems;

- supply line piezometer must not cross the water boiling line at its maximum temperature at any point of the route;

- piezometer of supply line must not cross the line of permissible pressures according to conditions of strength of pipelines and equipment at any point of route;

- reverse line piezometer must not cross terrain on any section of the route;

- the head at the "suction" of the network pumps must be at least 5 m of water. St.

Hydraulic calculation of heat network is used to construct piezometric graph.

A piezometric graph is drawn for the main line and branch for all hydraulic modes.

готовые черчежи Хромов.dwg