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| New water heaters for production of concrete  Heatec has introduced a new line of Firestorm heaters. These heaters are designed to heat water used to make concrete. The heaters have a high thermal efficiency: up to 99%. They raise the temperature of mix water up to 180ºF at flow rates from 20 to 300 gpm depending on the size of the heater. Unwanted atmospheric emissions are almost non-existent. Using heated water to make concrete enables ready-mix plants to extend their working season, which would otherwise be limited by cold weather. The heater heats mix-water as it is used to make the concrete. Because it fully heats the water as it is pumped directly to mixing equipment, only limited water storage may be needed for unusual demands.The heater uses a fired burner. The burner fires into the side of the heater shell. Cold water is sprayed into the top of the shell and migrates downward through diffusion material. The water is heated by direct contact with the hot burner gasses as it flows to the bottom of the shell where it accumulates momentarily. It is pumped directly from the bottom of the shell to the concrete mixing equipment. The shell and other parts of the heater that are subject to corrosion are made from stainless steel. Controls are automated using Programmable Logic Controller technology. A fully modulating burner is used. The heater is available in a variety of sizes. write your comments about the article :: © 2007 Construction News :: home page |