Glycol Heating And Cooling Systems

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Glycol heating and cooling systems.

Glycol is a water miscible coolant that is frequently used in heat transfer and cooling applications. Ethylene glycol and propylene glycol. Glycol is also routinely used in thermal energy storage systems to allow low temperature operation where ice is made at night and used during the day to provide cooling for the building. Convenience in cooling systems where components are frequently disconnected and reconnected the glycol is typically captured and added back to the system.

A central bath of glycol food safe antifreeze 70 glycol 30 water is used to cool all refrigeration equipment on your site. Ethylene glycol has a high boiling point low freezing point and is stable over a wide range of temperatures. Glycol water mixtures are commonly used to provide protection in closed loop heating and cooling systems. Glycol comes in two varieties.

The glycol system works much in the same way a standard household heating system works. In geothermal heating cooling systems ethylene glycol is the fluid that transports heat through the use of a geothermal heat pump. The hvac applications that most commonly use glycol are snow and ice melting systems ground source heat pumps solar water heating systems chilled water cooling systems and in the hydronic systems that require pipe burst protection due to their location or activity level. Maintenance of glycol cooling heating control system apart from the attention needed during the daily use the regular check and maintenance of glycol cooling heating control system are also very important.

Since glycol has a lower specific heat than water higher concentrations of glycol in your closed loop water will reduce the heat carrying capacity of the system. There is a one time initial cost to fill the system with 30 40 glycol. Ethylene glycol is the most common antifreeze fluid for standard heating and cooling applications because of its outstanding heat transfer efficiency. It provides better heat transfer parameters than water and can be mixed with water to provide a variety of heat transfer characteristics.

Ethylene glycol is also commonly used in chilled water air conditioning systems that either place the chiller or air handlers outside or must cool below the freezing temperature of water. It also has a low viscosity so less power is required for recirculating pumps. Instead solutions based on propylene glycol are commonly used. Too much glycol will therefore increase energy costs as the system works harder to accomplish the desired heating or cooling.

Cost glycol systems are usually slightly more expensive than water systems.