DUAL LOOP FURNACE COOLING SYSTEM
The optional Dual Loop Furnace Cooling System is designed to protect the furnace chamber and other critical components from corrosion and lime build-up that may cause clogging or hot spots. The system provides an economical, low maintenance supply of coolant while occupying minimum floor area.
One side of the system consists of a closed loop that delivers treated coolant to the furnace. The other side is an open loop that uses raw water to remove heat from the furnace coolant through a plate/frame heat exchanger. The Dual Loop Furnace Cooling System is available in several sizes with capacities designed to accommodate VAC AERO’s complete line of furnaces.
- Coolant from the furnace reservoir is pumped in a closed loop through one side of a liquid/liquid heat exchanger and into the furnace.
- Heated coolant from the furnace is returned to the furnace reservoir.
Cooling water from the remote sump reservoir is pumped through the other side of the liquid/liquid heat exchanger where it extracts heat from the furnace coolant. The heated cooling water is pumped to a cooling tower where it is cooled by evaporation. The cooling water is then returned to the remote sump reservoir through a gravity feed.
- A float valve maintains a constant level in the remote sump reservoir by periodically inletting make up water to offset evaporative losses.
- A thermostatic control prevents the water temperature from dropping lower than a preset temperature by turning on the cooling tower blower only when required.
The major components of the Dual Loop Furnace Cooling System consist of the following:
- Ready-to-install Furnace Cooling Package with reservoir, pump, heat exchanger, valves and gauges mounted and connected on a single
- structural steel base. Optional air or natural gas powered back-up pumps are available.
- Remote Sump Package including reservoir, tower pump, valves and gauges.
- Evaporative cooling tower with corrosion-resistant shell.
- Electrical Control Package in NEMA 12 enclosure for operation of entire cooling system. Controls can be configured to operate with 480V/3Ph/60Hz, 575V/3Ph/60Hz or 380V/3Ph/50Hz.