One of the best – and possibly most underutilized – methods for reducing energy consumption in commercial buildings is through the use of a thermal energy storage system.
Thermal energy storage reduces a building’s strict dependence on power supplied by the grid during peak daytime hours when cooling demands are greatest and electricity is most expensive. Instead, the building draws its power at night, during off-peak hours, when electricity costs half as much.
Thermal storage is like a battery for a building’s cooling system. Air conditioning equipment – usually a chiller(s) – produces ice at night, which is used the following day to cool the building without relying on the chiller to handle the bulk of the cooling load.
To understand how important it is to avoid consuming large amounts of electricity during peak hours, one must appreciate how power companies charge for it.
Power use is billed based on monthly consumption and demand. Consumption charges reflect how much energy a consumer used in a specific period of time (generally a month) measured in kilowatt-hours, while demand charges indicate the highest amount of power a consumer used during the same period.
Think of electrical consumption as a vehicle’s odometer recording total energy use while electrical demand is the speedometer climbing as energy use increases. Demand charges simply cannot be ignored, because they can account for 20 to 80 percent of monthly energy costs.
Considering HVAC accounts for 40 percent of energy use in buildings and 30 to 40 percent of peak electrical demand during the summer, thermal storage systems make sense.
Check out these five arguments for thermal energy storage:
Thermal energy storage is an excellent way to reduce a building’s operational expenses. It evenly spreads a building’s energy use by shifting cooling loads to off-peak hours, lowering demand charges and reducing utility costs by as much as 40 percent.
If your utility bills are too high and you’d like to reduce energy consumption in your building, consider thermal storage. For more information, please contact Jonathon Goering by email or phone at 316-265-9655.
Knipp Services works with commercial and industrial building owners to lower operational expenses and increase building comfort.
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