Cooling an Induction Furnaces
Induction furnaces come in many different shapes and sizes and are cooled by water. The water flows through the furnace coils which are composed of heavy copper tubing. The coils create high levels of heat through the use of electrical currents. The coils if not cooled will ruin the furnace. A circulating pump is used to force water through a furnace to a cooling tower where the heat is extinguished. Three types of cooling towers exist.
One type of cooling tower is called an evaporative cooling tower. Evaporative cooling towers use water sprays and fans to lower the temperature of hot water coming from the furnace. Mostly used in large capacity units cooling towers are highly efficient. Another type of cooling tower is allied a dry air cooling tower. This uses air flow supplied by fans to reduce the temperature of water. Dry air cooling is most effective when air temperatures is cool. Hybrid units operate in dry air coolers during cooler months. They also use the water spray. All three systems can be customized for the use of cooling a furnace.
Cooling systems are essential to the cooling of a furnace. Filters are used to keep water clean and flowing. Heat exchangers are used to maintain the water temperatures and keep water temperatures consistent. Flow sensors, pressure gauges, and water meters are used for monitoring and controlling the devices needs. Another component of cooling a furnace is having an emergency backup system. This system is used to maintain a furnaces cooling in case of a power failure, or emergency.