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many facilities with steam-generating capability overlook the economy and convenience of using some of that steam to heat water or other liquids.
Constantemp® Feedforward System
Obvious though it seems, many facilities with steam-generating capability overlook the economy and convenience of using some of that steam to heat water or other liquids.
Leslie Constantemp® heaters use a tightly-coiled circulating exchanger to transfer heat energy from the isolated steam flow to the desired liquid. These systems can take advantage of very low steam pressures and can deliver liquids at precisely defined temperatures.
Leslie Constantemp® steam heaters are available in two steam inlet pressure ranges: 2-15 or 15-200 psig. Heating is instant on demand with capacities up to 7,200 gallons per hour. Temperature variation is a maximum of ±3°F. The standard coil material is copper but Admiralty and cupro-nickel coils are available as special-service options.
The heart of the Leslie Constantemp® steam water heater is the feedforward blending device. The hot and cold water blend ratio is accurately proportioned to maintain the set temperature for all flow demands. Water is blended instantly; automatically; with virtually no lag in response time.
Should movement of the blending valve be restricted by foreign matter carried in the water flow a yielding spring arrangement allows the diaphragm and stem to move up uncovering a heat damper, the characterized blending valve. This damper allows more cold water to enter the blended mix eliminating the possibility of overheating or scalding.
Available sizes include 15, 30, 45, 60, 75, 90, 105 and 120 GPM models with adjustable ranges from 105°F to 180°F.