BHP with the use of a two-stage mixed scheme for connecting the hot water system to the TN through the removable plate heat exchanger "DAN"

At the moment, there is no direct requirement in the current regulatory documents, according to which the choice of the scheme for connecting DHW systems to the heating network is carried out. Historically, two-stage water heating is usually used if the ratio of the maximum heat output of the hot water supply system to the heat output of the heating system is from 0.2 to 1. In other cases, a single-stage parallel scheme is used.

The heating circuit coolant comes from the heating network and passes through the ball valve No. 11, is cleaned of mechanical impurities (not retained by the sump of the vehicle inlet unit) with a mesh filter No. 2. Further, the coolant flows through the limit washer and temperature control valve No. 3, actuated by an electric drive according to a signal from temperature sensor No. 4 installed on the DHW supply pipeline (T3) or by a mechanical drive of a direct-acting regulator. If necessary, a differential pressure regulator can be installed upstream of valve No. 3. Passing through the channels of the plate heat exchanger No. 5, the heating medium of the primary circuit transfers heat through the thin-sheet plates to the water of the DHW system, ensuring its rapid heating to the required temperature with any changes in the volume of consumption. The water temperature is controlled by a temperature controller. In the first stage of the heat exchanger for heating cold water, the total potential of the heat carrier from the return pipeline T2 of the heating system and the heat carrier that has given up part of the heat to heat water in the second stage is used. The coolant, which has completely given off heat, is removed from the BTP to the return pipeline of the heating network. The "summer" shut-off valve is located in the thermal input unit of the transformer substation. The circulation of heated water in the DHW system is provided by a circulation pump group, consisting of a working and standby pump No. 6. The control panel automatically turns on / off the pumping group according to the signal from temperature sensor No. 10 (located on the DHW circulation pipeline (T4). The water flow in this pipeline is recorded by water meter No. 7.

BHP marking

TG - BHP hot water systems

08 - Heat exchanger size

2st - Number of heat exchanger stages

1x - Number of heat exchanger strokes

c - Type of pumps - vertical

g - Type of pumps - horizontal

50 - Maximum heat load, kW

* - Technical information available upon request

NOTES:

The weight of the BHP is given without taking into account the weight of water and the package of heat exchanger plates.

The technical characteristics of the BHP are given taking into account the presence of an automation shield.

Upon request, it is possible to automate several BHPs using one switchboard, or automation in a common switchboard of a heating substation.

We reserve the right to make changes to the design of the BHP that do not affect the technical characteristics of the product.

Our specialists carry out an individual calculation of the BHP and its cost with initial parameters different from those indicated in the table.