Danfoss DSE Data sheet

Product Sheet Flexible Heat Exchanger Stations Type DSE

General description and application

Typical Uses

• District heating building connections

• Commercial building hydronic separation

• Tall building pressure breakers

Heat exchanger stations are designed for hydronic separation of LTHW and CHW systems. Suitable for district energy connections, commercial buildings, and renewable applications, the stations come complete with all relevant items to enable heat transfer, balance, control, and service of the primary to secondary system connection.

The stations can be installed individually, or in parallel as duty/duty or duty /standby supplies. PN25 versions are available on request for use as tall building or high pressure system breakers.

The stations include:

-A heat exchanger to transfer the energy between systems

-A controller which can provide individual heat exchanger control, be linked to control multiple units, and be connected to a building management system over-ride

-Pressure independent control valve for flow and motorised control in a dynamic pressure system

-An MID approved ultrasonic energy meter for measurement, monitoring, and billing accurate consumption data

-A commissioning valve for measurement of flow

-A secondary side safety valve

-Primary and secondary strainers

-Ball or butterfly isolation valves

The stations are factory tested to the pressure equipment directive (PED)

General Operating Parameters

*other parameters are available on request

Please note, this is a generic specification and not necessarily related to your project. For exact specification, please refer to the bill of materials, and specification pages for your project.

Station Details

Station DetailsStation Details

Pipework Sizes DN40-200

Maximum permissible supply temperature 95 ºC

PN Rating 16 Bar

Flow Rate Range 0.83 l/s to 40 l/s

Maximum Differential Pressure (Primary) 4 Bar

Safety Valve Rating (secondary) 6 Bar standard (higher upon request)

Pipes and pipe fittings, flanges P235GH-TC1, C22.8, CuS

Heat Exchanger 1.4404 with CU brazing compound

Insulation PU-Hardfoam, black, λ =0.027 W/mK

Product Sheet Standard Heat Exchanger Stations Type DSE

LTHW ∆T

kW LTHW

Capacity

∆T

Function

The heat is drawn from the primary heat source, commonly a boiler, district heating supply, or CHP, through the isolation valve, strainer, balancing valve, and heat exchanger, then back via the return pipe to the primary heat source.

On the secondary side of the stations, the flow enters and passes through the isolation valve and strainer, to the heat exchanger, where is gains energy to supply the building with heat or cooling water. A safety valve is located on the secondary flow to ensure an excess of pressure is not experienced on the secondary system. This can be provided with the required opening pressure.

A pressure independent control valve balances and limits flow through the pipework, to achieve the required secondary outlet temperature. The flow control is independent of pressure fluctuations in the system and the motorised valve element has full authority control at all load conditions.

The energy meter is positioned on the return, with two sensors, one on the flow, one on the return. The energy meter measures the volumetric flow rate, and the difference in temperature between flow and return, to calculate the energy used by the connection. The meter is supplied with an m-bus output to feed the energy usage to the building management system or meter reading system

The controller senses the secondary return temperature, and modulates the control valve to achieve the desired secondary flow temperature. An outdoor sensor can be added to provide weather compensation. A number of applications can be provided by one controller, with an application key supplied with the station to control the station as per the application.

The station is provided with fully isolation provided by ball or fully lugged butterfly valves, temperature and pressure gauges, test points, and drain points.

Station Flow Rate and Capacities

Capacity

Pipework Size Code Connection

DN40 DSE1 MAXI IG 40-040 1.1/2" BSP threaded 2.05 0.82 172 258 52 85 kPa 41 kPa

DN50 DSE1 MAXI IG 50-050 2" BSP threaded 3.50 1.4 294 441 88 91 kPa 45 kPa

DN65 DSE1 LARGE IT 65-65 2.1/2" PN16 Flanged 5.50 2.2 462 692 138 92 kPa 41 kPa

DN80 DSE1 LARGE IT 80-80 3" PN16 Flanged 7.50 3 629 944 189 82 kPa 39 kPa

DN100 DSE1 LARGE IT 100-100 4" PN16 Flanged 10.00 4 839 1259 252 81 kPa 39 kPa

DN125-1 DSE1 LARGE IT 125-125-15ls 5" PN16 Flanged 15.00 6 1259 1888 378 82 kPa 38 kPa

DN125-2 DSE1 LARGE IT 125-125-20ls 5" PN16 Flanged 20.75 8.3 1741 2612 522 84 kPa 41 kPa

DN125-3 DSE1 LARGE IT 125-125-25ls 5" PN16 Flanged 25.00 10 2098 3147 629 89 kPa 43 kPa

DN150 DSE1 LARGE IT 150-150 6" PN16 Flanged 30.00 12 2517 3776 755 84 kPa 40 kPa

DN200 DSE1 LARGE IT 200-200 8" PN16 Flanged 40.00 16 3357 5035 1007 80 kPa 39 kPa

Notes *1-These figures are primary duty at the max design flow rate and the ∆T described Notes *2-These figures are at maximum capacity, with a heat exchanger selected to lose 30 kPa. If you require a lower pressure loss please discuss this with your Danfoss representative

Max Design

Flow Rate (l/s)

Min

Design

Flow Rate

(l/s)

(*1)

Capacity

∆T 30

(*1)

CHW

(*1)

Max Primary

Station ∆P

(*2)

Secondary Station ∆P

Max

(*2)

Please note, this is a generic specification and not necessarily related to your project. For exact specification, please refer to the bill of materials, and specification pages for your project.

Product Sheet Standard Heat Exchanger Stations Type DSE

16 Bar

Unit Schematic

Key Components

Position Type Position Type

500 Control box 159 Isolation Valve

1 Heat exchanger 160 Pocket for thermometer sensor 12 Isolation Valve 160 Temperature Gauge 14 Temperature Gauge 175 Secondary Flow Drain Point 16 Pressure Gauge 181 Secondary Return Drain Point 18 Strainer 183 Air vent 20 Sensor for energy meter 184 Immersion Sensor 24 Hydronic Balancing valve 186 Safety valve 26 Air vent 187 Safety valve 29 Primary Flow Drain Point 195 Pressure Gauge 31 Primary Return Drain Point 196 Temperature Gauge 35 Pressure Independent Control Valve 197 Isolation Valve 40 Ultrasonic Energy meter 752 ECL controller 42 Sensor for energy meter 44 Pressure Gauge 46 Temperature Gauge 48 Isolation Valve

Component Types

Component type DN40 DN50 DN65 DN80 DN100 DN125-1 DN125-2 DN125-3 DN150 DN200

Max Flow Rate l/s 2.05 3.5 5.5 7.5 10 15 20.75 25 30 40

Heat Exchanger (See note 1) XG XG XG XG XG XG XG XG XG XG

Controller ECL 210 ECL 210 ECL 210 ECL 210 ECL 210 ECL 210 ECL 210 ECL 210 ECL 210 ECL 210

Energy Meter Sonometer 30 Sonometer 30 Sonometer 31 Sonometer 31 Sonometer 31 Sonometer 31 602 Ultraflow 602 Ultraflow 602 Ultraflow 602 Ultraflow

Pressure Independent

Control Valve

Strainers FVF FVF FVF FVF FVF FVF FVF FVF FVF FVF

Balancing Valve MSV-BD MSV-BD MSV-F2 MSV-F2 MSV-F2 MSV-F2 MSV-F2 MSV-F2 MSV-F2 MSV-F2

Temperature Sensor ESMU 100 ESMU 100 ESMU 100 ESMU 100 ESMU 100 ESMU 100 ESMU 100 ESMU 100 ESMU 100 ESMU 100

Safety Valve SYR 1915 SYR 1915 SYR 2115 SYR 2115 SYR 2115 SYR 2115 SYR 2115 SYR 2115 SYR 2115 SYR 2115

Isolation Valves IVR 954 IVR 954 VFY-LH VFY-LH VFY-LH VFY-LH VFY-LH VFY-LH VFY-LG VFY-LG

Temperature Gauges TDL 150 TDL 150 TDL 150 TDL 150 TDL 150 TDL 150 TDL 150 TDL 150 TDL 150 TDL 150

Pressure Gauges M80 0-16 Bar M80 0-16 Bar M80 0-16 Bar M80 0-16 Bar M80 0-16 Bar M80 0-16 Bar M80 0-

Air Vent Manual Manual Manual Manual Manual Manual Manual Manual Manual Manual

Drain Points IVR 954 IVR 954 IVR 954 IVR 954 IVR 954 IVR 954 IVR 954 IVR 954 IVR 954 IVR 954

Note 1-The heat exchanger selections will vary depending on duty requirement and temperature requirements

ABQM ABQM ABQM ABQM ABQM ABQM ABQM ABQM ABQM ABQM

M80 0-

Please note, this is a generic specification and not necessarily related to your project. For exact specification, please refer to the bill of materials, and specification pages for your project.

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