Use Chilled Water for Precise Greenhouse Cooling & Control
How Greenhouse Cooling Works
Hydronics is the use of water as the heat-transfer medium in heating and cooling systems. Historically, in large-scale commercial and institutional buildings, a hydronic system may include both a chilled and a heated water loop, to provide for both heating and air conditioning. Chillers and cooling towers may be used separately or together as means to provide water cooling, while boilers heat water.
Chilled water cooling is a hydronic process by which chilled water is circulated through a loop piping system. Circulator pumps force the water through a heat exchanger, where a fan draws warm air out and cools it as it passes over cold coils. A system may be broken up into individual temperature zones using either multiple circulator pumps or a single pump and electrically operated zone valves.
Like a radiant heating system, chilled water cooling is controlled and regulated by the operation‘s environmental controls, allowing scientists to precisely control the temperature of their plants and the greenhouse climate. Direct digital controls not only provide precise environmental control, but also allow for energy and cost savings.
Precise Greenhouse Cooling Alternative
Chilled water cooling systems are equally efficient. One type of chilled water cooling system consists of the passage of warm air across cold coils. The air is then dehumidified for office or residential applications.
The difference between this type of system and the system Delta T Solutions offers is that our process does not dehumidify the air as it is cooled. In the institutional greenhouse setting, the air is cooled to a temperature at or around dew point to avoid condensation of the air.
Customized Greenhouse Cooling Solutions
Chilled water cooling provides precise control to research institutions at an expense that is not easily justified for commercial grower. The system was not designed economically for commercial growers, but may appear in some commercial settings where very tightly controlled temperature ranges are a high priority.
Consider these factors when selecting chilled water cooling systems:
To date, Delta T Solutions has installed several chilled water cooling systems, and we currently have more projects on the drawing board. To learn more, contact us at 800-552-5058, or email: firstname.lastname@example.org
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