08/10 Challenge Conventional storage tanks with sparge pipes (simple pipes with drilled steam distribution holes) tend to have uneven water temperature control, steam hammer, heavy vibration caused by collapsing steam bubbles, and low efficiency. The steam temperature control valve also ‘hunts’ when approaching the water temperature set point due to the reduced steam pressure. Solution Kadant Johnson designed a direct steam injection heater that rapidly and accurately heats liquids by injecting steam directly into the fluid inside a mixing chamber. The direct injection heater provides two options to the above problem: 1. Replace the sparge pipe with a direct injection heater. The water in the storage tank is circulated through the direct injection heater to mai

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