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Water to Water Heat Exchangers » 1kW to 300kW

Cooling capacities from 1kW to 300kW
Self-contained systems with heat exchanger, coolant storage tank and pump.

Description

Water-to-water cooling systems utilise chilled house water to remove heat from process coolant. They provide a barrier thus protecting your process coolant from potentially harmful cooling water that may be contaminated by corrosion, bacteria, or may simply not be compatible i.e. oil — water, ultra pure deionised water - water. They are ideal for high heat load applications where precise temperature control is needed and chilled house water is available. The LR & LB range of self-contained water-to-water heat exchange units is fully packaged, self-contained, and complete with heat exchanger, pump, coolant reservoir and all necessary controls. The LR range is suitable for mounting in standard 19" racks or bench top location whilst the LB range is free standing.

Heat Exchangers

This usually takes the form of a plate heat exchanger with a matrix of corrugated plates. Dependant on the size requirements, the individual plates will be either brazed together or sandwiched between two heavy end plates and pulled together by tie bolts. Supplied in 304 & 316 stainless steel as standard and Titanium for more aggressive applications.

Water Circuit

A wide range of non-ferrous/stainless steel pumps with varying flows and pressures are available to suit the customer's requirements. Pumps are of positive displacement or centrifugal mono-bloc construction with fan-cooled electric motors having class E or F insulation. A coolant tank of adequate capacity including a generous ullage allowance for drain-back is incorporated within the cabinet. The coolant circuit is completely non-ferrous including copper pipe, two ply reinforced SBR hose and appropriately sized BSP female fittings for inter-connection to external process.

Standard Features:

  • Supplied complete with circuit breakers and on/off switches.
  • Coolant pump starting contactors.
  • Pump motor protection.
  • IP54 protection.
  • 24 V control circuit where fitted.
  • Temperature gauge.
  • Pressure gauge.
  • Coolant safety by-pass.
  • Visual tank level indicator.

Typical Circuit

Cabinet

Bolted construction from pre-fabricated panels generally manufactured from polyester powder coated, Zintec steel with semi gloss finish. Assembled using BZP fasteners. Sufficient working space envelope and easy access panels allow safe, trouble free maintenance.

Typical Applications

  • Resistance Welding Machines
  • High Frequency Generators
  • Furnace Equipment
  • X-Ray Devices
  • Lasers
  • General Process Cooling

Technical Data

Self-contained water-to-water heat exchangers with plate heat exchanger, coolant storage tank and pump.
STANDARD COOLER SPECIFICATION
Model number LR5U10 LR5U40 LR6U80 LB200 LB500 LB1000 LB3000
Product code 10-224 10-226 10-228 10-577 10-578 10-546 10-579
CAPACITY - At 5°C Δ T Difference Primary to Process
Heat removal (kW) 1.0 4.0 8.0 20 50 100 300
Process flow rate (l/min) 4 8 12 30 75 150 300
Primary flow rate (l/min) 2.1 8.2 12.8 22 55 110 330
COOLANT CIRCUIT
Pump type Positive Displacement Positive Displacement Positive Displacement Centrifugal Centrifugal Centrifugal Centrifugal
Pump material Brass Brass Brass St.St. St.St. St.St. St.St.
Maximum pressure (bar G) 4 4 4 5 5 5 5
Tank capacity (litres) 3.6 3.6 4.8 12 12 80 100
Connection size (BTSP) 3/8 3/8 1/2 3/4 1-1/4 1-1/2 2
ELECTRICAL DATA - Voltage tolerance for all coolers +/-10%
Voltage/Phase 230/1 230/1 230/1 400/3 400/3 400/3 400/3
Max current (amps) 1.6 1.6 3.6 2.7 3.0 5.5 18.0
Motor power (kW) 0.18 0.18 0.36 1.1 1.8 2.2 7.5
NOMINAL OVERALL SIZE
Width (mm) 482 482 482 550 550 800 1000
Height (mm) 222 222 267 650 650 1000 1400
Depth (mm) 500 500 500 800 800 1250 1350
Net weight (KG) (approx.) 28 28 37 55 60 225 260