CS249569B1 - Hot service water's three-stage heating device - Google Patents

Abstract

the solution concerns a three-stage device heating of domestic hot water in handover centralized heat supply station fitted with a pipe (1) for heated water. the heated water pipe (1) is connected through the tank heat exchanger surface (6) to heat recycling and heat exchanger area oh the riser (?) to the flow heater (8), provided with a heating supply pipe (5) medium and hot service through the perimeter pipe (2) water. To the heat recovery tank (6) the hot drain (3) is connected water and the inlet (7) is connected to the heater (7) (4) returnable heating medium.

Description

The invention relates to a device for three-stage heating of domestic hot water.

The hitherto used domestic hot water systems in the transfer stations use only the heat of the return primary medium to preheat the domestic hot water. The hot waste water is not diverted to the transfer station, but is discharged through a common cold waste water pipe directly to the sewer and the heat contained therein is not used. The domestic hot water is heated only in a two-stage manner, by preheating with the return primary medium and reheating in the domestic hot water heater.

These drawbacks are overcome by a three-stage hot water heating system in a centralized heat supply station equipped with a hot water pipe according to the invention. Its principle is that the heated water line is connected through the heat recovery surface of the heat recovery tank and the heat exchange surface of the heater to a flow heater provided with a heating medium inlet and a domestic hot water outlet, and a hot inlet is connected to the heat recovery tank. of waste water and the return of the heating medium is connected to the heater ·

By pre-heating the domestic hot water, waste water, further domestic hot water stages, the total amount of energy required to heat the domestic hot water is reduced. By concentrating all three stages of domestic water heating into the transfer station, the design of the whole facility will be simplified, the requirements for claiming additional space in the building will be eliminated and qualified operation of the whole facility will be possible within the common operation at the transfer station.

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The invention and its effects are explained in more detail by way of example with reference to the drawing which is a diagram of a three-stage hot water heating system according to the invention.

The device for three-stage heating of domestic hot water in the centralized heat supply station according to the invention consists of a pipe 1 for hot water, which is connected through the heat exchanger surface 6 of the heat recovery tank 6 and the heat exchanger surface 2 of the flow heater 8. the heating medium pipe 2 and the domestic hot water outlet pipe 2. A hot waste water inlet 2 is connected to the heat recovery tank 6. The return heating medium supply 4 is connected to the heater 7. From the pipe 1, the heated water flows first through the heat exchanger surface housed in the heat recovery tank 6, to which they are led through the inlet 2 of the separated hot waste water before it enters the sewer. The preheated service water further flows through the heat exchanger surface housed in the flow heater 7, to which it flows through the inlet 4, the return heating media before it is discharged from the building. After leaving the heater 7, the pre-heated domestic water is led to an accumulation or flow heater 8, where it is heated by the heating medium to the desired domestic water temperature, which is discharged via a drain pipe.

2. The system does not require complex machinery or construction work. It is immediately feasible at all transfer stations in buildings and in buildings, when hot waste water is separated from cold waste water with excrement.

Claims (1)

Apparatus for three-stage heating of domestic hot water in a centralized heat supply station equipped with a hot water pipe, characterized in that the hot water pipe (1) is connected via a heat exchanger heat exchanger surface (6) and a heater heat exchanger surface (7). (1) to a flow heater (8) provided with an inlet pipe (5) of the heating medium and an outlet pipe (2) of hot service water, wherein a hot waste water inlet (3) and a heater (7) are connected to the heat recovery tank. the return heating medium supply (4) is connected.