Heaters steam-and-water software
Heat exchangers steam-and-water kozhukhotrubny are intended for use as a part of heating systems where hot steam acts as the heat carrier. They are widely applied at the industrial enterprises, in residential and office buildings.
Principle of work
In a heater the heated water moves on pipes, and the heating steam through a branch pipe in the top part of the case comes to interpipe space in which the segment partitions directing to the movement of a steam stream are established. Condensate of the heating steam flows down in the lower part of the case and is taken away from a heater. The uncondensible gases (air) collecting in a heater are taken away through a branch pipe on the device case.
Design and installation of heaters steam-and-water
The heater steam represents the kozhukhotrubny heat exchanger of horizontal type which main knots are: the case, pipe system, forward and back (floating) water chambers, a case cover. Assembly of the main knots of a heater is carried out by means of the demountable flange connection providing a possibility of routine inspection and repair.
Designing heating system, the necessary standard size of the steam-and-water heat exchanger is defined. At the same time the set thermal stream and a consumption of the heated water is considered. Settlement pressure of the water pumped from a network to steam boilers should not exceed 1,2 MPas. The minimum temperature on an entrance is not below +70 °C. Water temperature at the exit depends on length of section and makes from +95 °C to +150 °C. Pressure of the steam heat carrier should not exceed 0,7 MPas.
At installation and connection of heatexchange elements of steam-and-water devices it is more preferable to use the counterflow scheme of movement of steam and the heated water.
Heat exchangers steam-and-water kozhukhotrubny are manufactured in two variations:
- with the elliptic bottom (PP1);
- with the flat bottom (PP2).
Length of rectilinear sections can make 2000 mm or 3000 mm. Range of outer diameters of heatexchange pipes - from 325 to 820 millimeters.
Heaters steam-and-water software can be operated in the following climatic conditions: in a temperate climate 3 and 4 categories of placement in accordance with GOST 15150-69; in humid tropical climate 4 categories of placement in accordance with GOST 15150-69; in arid tropical climate 4 categories of placement in accordance with GOST 15150-69; The Third category of placement assumes placement in the enclosed space with natural regulation of a microclimate, the fourth - in the enclosed space with artificial regulation of microclimatic conditions.
Settlement service life of steam-and-water installations makes 20 years, a warranty period - 2 years from the moment of input of a heater in operation.