a Danfoss Platform for Flensburg Secondary Network

Transcription

1 DSP MINI a Danfoss Platform for Flensburg Secondary Network General description and application The DSP MINI is designed for use in district heating networks, suitable for heating and for providing DHW for single family houses. It provides an alternative solution to an oil or gas boiler. The DSP MINI is designed for heating, domestic hot water and floor heating. The wall-mounted construction saves space which is needed for installation and service. The DSP MINI is designed as a wall-mounted sta tion. Each station is equipped with micro plate heat exchangers for DHW and optional for heating manufactured by Danfoss, which significantly increase substation performance and lifetime. All components are placed at the front of the station, which makes it very easy to access them during maintenance or servicing. The mounting bracket significantly reduces the time required to mount the substation to the wall. The connections are predefined and allow installers to prepare installation before station is available on the site, which reduces the time between delivery and startup. Piping prepared with automatic welding machines ensures the highest possible welding quality. DSP MINI is equipped with high quality Danfoss components, which are tested, approved and optimized for safe and reliable operation: Comfort 0 controller Motorized control valves AVTB self-acting temperature controller AVPB-F Differential pressure controller with flow limitation Brazed MicroPlate Heat exchanger, XB0 Primary side polyurethane insulation according 0% ENEV 0 Metal box with door Operating parameters Primary side Maximum temperature 9 C Maximum pressure 0 bar (g) Connection DN 0 / Rp ¾ Heating Maximum temperature* 9 C Maximum pressure* 0 bar (g) Connection DN 0 / Rp ¾ Domestic Hot Water Maximum temperature 9 C Maximum pressure 0 bar (g) Connection DN 0 / Rp ¾ Max dimensions (mm) Width / Height / Depth 0 / 000 / 0 mm Weight (incl. packing) max. 0 kg * In case of floor heating with heat exchanger the maximum temperature is 0 C and the maximum pressure is bar(g) Materials Pipes, fittings, valves (primary side) PGH, CuSnZnPb (Rg), Red bronze (Rg), brass MS (nickel plated) Pipes, fittings, valves (heating side) PGH, EN-GJL-0 (GG) Pipes, fittings, valves (DHW side).0,.0, CWN Heat exchanger.0 with Cu brazed Insulation (heat exchanger) PU foam (λ=0.0 W/mK) Insulation (piping primary side) PU foam (λ<0.0 W/mK) Danfoss 0. VD.MG.B.0

2 Circuit diagram 0 xdn FL-S-DL-U-D-/ 0 A0 xdn 0 FL-S-DL-R-D-/ Ball valve with M0 Manometer Manovalve Strainer Drain valve Insert energy meter Pressure controller AVPB-F Control valve VM 0 Shut off valve mm Temperature controller AVTB Pump Heat exchanger Safety valve Ball valve Ball valve DVGW Ball valve Bimetal thermometer application key Safety valve Temperature sensor Safety temperature monitor (STW) Check valve Danfoss 0. VD.MG.B.0

3 0 A0 0 xdn FL-S-DL-R/FB-D-/ 0 0 A0 9 xdn FL-S-DL-R/FB/WT-D-/ Ball valve with M0 Manometer Manovalve Strainer Drain valve Insert energy meter Pressure controller AVPB-F Control valve VM 0 Shut off valve mm Temperature controller AVTB Pump Heat exchanger Safety valve Ball valve Ball valve DVGW Ball valve Bimetal thermometer application key Safety valve Temperature sensor Safety temperature monitor (STW) Check valve VD.MG.B.0 Danfoss 0.

4 0 xdn FL-S-KP-U-D-/ 0 A0 xdn 0 FL-S-KP-R-D-/ Ball valve with M0 Manometer Manovalve Strainer Drain valve Insert energy meter Pressure controller AVPB-F Control valve VM 0 Shut off valve mm Temperature controller AVTB Pump Heat exchanger Safety valve Ball valve Ball valve DVGW Ball valve Bimetal thermometer application key Safety valve Temperature sensor Safety temperature monitor (STW) Check valve Danfoss 0. VD.MG.B.0

5 0 A0 xdn 0 FL-S-KP-R/FB-D-/ 0 0 A0 9 xdn FL-S-KP-R/FB/WT-D-/ Ball valve with M0 Manometer Manovalve Strainer Drain valve Insert energy meter Pressure controller AVPB-F Control valve VM 0 Shut off valve mm Temperature controller AVTB Pump Heat exchanger Safety valve Ball valve Ball valve DVGW Ball valve Bimetal thermometer application key Safety valve Temperature sensor Safety temperature monitor (STW) Check valve Function The DSP Mini substation is the connecting part between the heat supplier and the consumer of the heating and domestic hot water. The task of the substation is to adapt the heat condition suitable for the consumer and meet the demand from the heat supplier and consumer. The water is coming from the district heating utility and is fed into the station at the appropriate pressure and temperature. This can be higher in winter and lower in the summer. The district heating water flows in the primary flow through the shut-off valves and the strainer. Pressure gauges and thermometers are installed in the flow and return to detect the pressure and temperature. Depending on the variant, the connection of the secondary side (heating) is carried out directly or indirectly (via heat exchanger). Furthermore, on the primary side, in the flow circuit we have a control valve, depending on the variant, control valves are used to adapt the heat conditions (secondary temperature) by controling the flow of district heating water. The inputs are comming from using our Danfoss Comfort 0 controller with weather compensating function. The district heating water then flows back to the district heating supply via the primary return through the shut-off valves and the strainer. On the primary side, high temperature connections for radiator heating or similar are used depending on the application selected. In the secondary circuit, a circulating pump distributes the heating water to the heating devices, this is available depending on the application. If the application selected has domestic hot water production included, this is connected to the primary side and is prepare via a heat exchanger and with a self-acting control valve. To limit the flow of primary district heating water, a flow limiter with integrated differential pressure control is provided in the return of the primary side, here the maximum flow from the contract can be adjusted. To measure the energy consumed, an insert for a heat meter is available and M0 connections are provided in the primary side ball valves. VD.MG.B.0 Danfoss 0.

6 Capacity, weight and dimensions Capacity Max. Code Description [kw] Heat exchanger Pipe diameter Weight Heating Dp (kg) available approval number HE DHW HE DHW DH HE DHW kpa G0000 DSP MINI APP DHE TWE * *** n/a XB0H **** FL-S-DL-U-D-/ G000 DSP MINI APP MHE TWE * *** n/a XB0H+--0 * FL-S-DL-R-D-/ G000 DSP MINI APP FBH TWE 0** *** n/a XB0H+--0 ** FL-S-DL-R/FB-D-/ G000 DSP MINI APP FBH TWE 0** *** XB0L--0 XB0H ** FL-S-DL-R/FB/WT-D-/ DN 0 / Rp ¾ G000 DSP0 MINI APP DHE * n/a n/a 0 **** FL-S-KP-U-D-/ G000 DSP0 MINI APP MHE * n/a n/a * FL-S-KP-R-D-/ G000 DSP0 MINI APP FBH 0** n/a n/a ** FL-S-KP-R/FB-D-/ G000 DSP MINI APP FBH 0** XB0L--0 n/a 0 ** FL-S-KP-R/FB/WT-D-/ Type * Calculated with deg ΔT (0/ C) ** Calculated with 0 deg ΔT (/ C) *** Calculated with 0 deg ΔT (0/0 C) **** No pump is available in this application DSP MINI APP DHE TWE Type No. of hex Application no. Type of heating Type of DHW MINI APP DHE = Direct heating TWE = Instantaneus MINI APP FBH = Floor heating = Connections MINI APP MHE = Mixing heating MINI APP MINI APP MINI APP MINI APP MINI APP 9 0 Radiator heating return Radiator heating supply Drain valve Primary out Primary in MAG Heating return Heating supply Domestic hot water Drain pipes Cold water Configuration Contact the sales staff responsible for additional details and a quotation for the DSP MINI. Danfoss GmbH Tel.: CS@danfoss.de Danfoss DHS-SMT/PL 0. VD.MG.B.0