VSDs are profitable where equipment


Posted November 18, 2021 by silwall

Xenon, krypton and sulfur hexafluoride-filled glazing can do an even better job than argon at thermal insulation.
 
An EMS can provide an abundance of information about building performance, but someone has to figure out what they want the EMS to do and then give it directions. Calibrating controls, testing and balancing are key to any well-maintained HVAC system, but are especially critical to optimize control efforts.

Variable speed drives and energy-efficient motors

Variable speed drives (VSDs) are nearly always recommended as a reliable and cost-effective upgrade.

VSDs are profitable where equipment is oversized or frequently operates at part-load conditions. Savings of up to 70 percent can be achieved by installing VSDs on fan motors operating at part-load conditions. They may be applied to compressor or pump motors and are generally used in variable air volume (VAV) systems. They are also cost effective in water-side applications. Backward-inclined and airfoiled fans are the best VSD candidates.
http://www.silwall.com/products/molecularsieve/276.html
Air-handler configurations controlled by variable inlet vanes or outlet dampers squander energy at part-load conditions. Using throttle valves to reduce flow for smaller pumping loads is also inefficient. The efficiency of motors begins to drop off steeply when they run at less than 75 percent of full load; they can consume over twice as much power as the load requires. VSDs operate electronically and continually adjust motor speed to match load.
http://www.silwall.com/products/corkpad/279.html
The power to run the VSD is proportional to the cube of the speed (or flow), which is why this technology is so efficient. If the speed is reduced by just 10 percent, a 27 percent drop in power consumption should result. A VSD pilot study performed by EPA found that VSD retrofits realized an annual average energy savings of 52 percent, an average demand savings of 27 percent and a 2.5-year simple payback.
http://www.silwall.com/products/molecularsieve/275.html
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Issued By silwall
Phone 18656157170
Business Address Air-handler configurations controlled by variable inlet vanes or outlet dampers squander energy at part-load conditions.
Air-handler configurations controlled by variable inlet vanes or outlet dampers squander energy at part-load conditions.
Country American Samoa
Categories Accounting
Tags brake system molecular sieve
Last Updated November 18, 2021