FLEXWELL district heating cable Table of Contents System description General System structure FLEXWELL district heating cable range Planning, design engineering Pressure loss chart Heat losses Components T-joint Through connection, PN 16, types 30/91 to 147/220 Through connection, PN 25, types 30/91 to 200/310, welded Through connection, PN 25, types 30/91 to 75/171, GR version Connector, PN 16, types 98/171 to 147/220, versions A and DE Connector, PN 25, types 30/91 to 200/310, G version, welded Wall leadthrough Wall leadthrough with core bore or fiber cement liner pipe (impermeable to pressure from water) House entry bend Underground construction, installation Loop-in method, type of routing/installation Loop-in method, building entries Dimensions for axis and wall distances, connector types 30/91 to 75/171 Dimensions for axis and wall distances, connector types 98/171 to 147/220 Dimensions for axis and wall distances, welded connector types 30/91 to 200/310 Installation through protective pipes Installation through protective pipes Horizontal directional drilling (HDD) method Installation without trenches Information for underground construction - technical regulations, standards, information on execution Information for underground construction, trench dimensions Information for underground construction, wall openings Information for underground construction, core bores Information for underground construction, through connection Information for underground construction, T-joint - downward branch Information for underground construction, T-joint - upward branch Information for underground construction, house entry bends Distance from other supply lines Subject to technical changes

FLEXWELL district heating cable 2. Range of applications Max. permitted operating temp. Tb,™: -170 to +150 °C Max. permitted operating pressure p: PN 25 bar FLEXWELL district heating cable is the registered name of a flexible pipe system from BRUGG Pipe Systems, used to transport district heat and domestic hot water. This pipe - which is laid directly in the ground - has proven its merits in practice for many years under a wide range of extreme conditions. FLEXWELL district heating cable has a helically corrugated inner pipe made of stainless steel. The materials used are extremely resistant...

FLEXWELL district heating cable

FLEXWELL district heating cable 1 Stainless steel carrier pipe 2 PUR foam 3 Steel casing 4 Anti-corrosion protection 5 PE-LD casing 6 Monitoring wires FLEXWELL district heating cable Type DN Carrier pipe Casing pipe External diameter Minimum Volume Weight Maximum d1 x s1 s2 D bending radius carrier pipe delivery lengths* * based on maximum possible drum capacity and normal production length Subject to technical changes BRUGG PIPESYSTEMS Flexible solutions

FLEXWELL district heating cable (1 Mass flow rate -^ [kg/h] Example: Mass how rate 7000 kg/h; FLEXWELL district heating cable type 75/171 -> Pressure loss 90 Pa/m Subject to technical changes BRUGG y PIPESYSTEMS Flexible solutions

FLEXWELL district heating cable I FHK 5.210 FLEXWELL district heating cable Heat losses q [W/m] for one UNO pipe Heat loss during operation: q = U (Tb -Te) [W/m] U = Heat transfer coefficient [W/mK] Tb = Averageoperatingtemperature [°C] Te = Average ground temperature [°C] Type of installation, FHK UNO: Pipe distance: Coverage height: Ground temperature: Soil conductivity: Conductivity of PUR foam: 06.06.2018 Subject to technical changes BRUGG PIPESYSTEMS Flexible solutions

FLEXWELL district heating cable 1 FLEXWELL district heating cable with connector 2 Monitoring wires 3 T-piece 4 PE-HD shrink sleeve 5 Shrink-on collar 6 Shrink-on collar 7 Rigid PUR foam Depending on the pressure level, the T-pieces are supplied with either standard or welded connectors. 06.06.2018 Subject to technical changes BRUGG PIPESYSTEMS Flexible solutions

FLEXWELL district heating cable Structure of through connection, PN 16 5 6 4 3 Structure 1 FLEXWELL district heating cable with connector 2 Monitoring wires 3 Connecting pipe with support sockets 4 PE-HD shrink sleeve 5 Shrink-on collar 6 Rigid PUR foam Dimensions of through connection FHK-Type L 06.06.2018 Subject to technical changes BRUGG PIPESYSTEMS Flexible solutions

FLEXWELL district heating cable 1 FLEXWELL district heating cable with connector 2 Circumferential seam weld (provided by customer or others) 3 Connecting pipe with welding lip 4 PE-HD shrink sleeve 5 Shrink-on collar 6 Rigid PUR foam 7 Monitoring wires 1 FLEXWELL district heating cable Types 30/91 to 147/220 FLEXWELL district heating cable Type FHK 200/310 1 FLEXWELL district 4 heating cable 2 Shrink-on collar 3 Metal plate collar 4 Sealing plug 5 Weld ring 6 Rigid PUR foam 7 Jointing compound Dimensions of through connection FHK type L 0 Dm„ 06.06.2018 Subject to technical changes BRUGG...

FLEXWELL district heating cable Connector, PN 25 Types 30/91 to 75/171, GR version The FHK connector with the type GR graphite ring seal (Figure 1) is specifically designed for use with FLEXWELL district heating cable for heating and domestic water pipes, up to a dimension of DN 65. It is used to make all connections on pipe installations in buildings and shafts, and for through-type and T-joints. The monitoring wires pass through a watertight exit on the connector. This connector can withstand loads of up to nominal pressure stage PN 2511 at a maximum temperature of 150 °C. Version for domestic...

I FHK 5.320 Connector, PN 16 Types 98/171 to 147/220, versions A and DE The FHK connector (Figure 1)isa connecting component specifically designed for FLEXWELL district heating cables. It is used to make all connections on pipe installations in buildings and shafts and also for through-type and T-joints (FHK 5.305 and FHK 5.300}. Two variants of the connector can be supplied (Figure 2). When delivered, the pipe ends are protected with plastic caps to prevent impurities from entering the inner pipe. Type A connector is intended for hot water pipes. The type DE connector is additionally available...