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Ventilation Fan Belts, Synchronous and Cogged

Last Updated: 02/27/24
Ventilation Fan Belts, Synchronous and Cogged

A ventilation fan belt is a belt, driven by the crankshaft of an engine, that turns a fan for drawing cooling air through the radiator. Synchronous drive belts are designed to reduce both belt slippage and frictional losses. Cogged V-belts are designed to reduce the bending resistance as the belt travels around the sheave (pulley) and have less frictional losses than standard V-belts.

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Life Cycle Cost Savings

Life Cycle Costing (LCC) aims to quantify the financial impact of a product over its entire life cycle to assist consumers in making decisions that will save them money over the long term.

GSA's Proving Groundopens in new window found that the use of cogged V-belts and synchronous-drive fan belts are a low-investment way to reduce the inefficiencies in ventilation fans caused by bel slippage and bending resistance. GPG found an energy savings of 2 - 20% for synchronous belts, with about half that savings for cogged fan belts. Payback is between 1 and 4 years, depending on the type of fan belt.

Guiding Principles
Contributes to meeting The Guiding Principles for Sustainable Federal Buildings
Additional Guidance

GSA's Green Proving Ground recommends replacing V-belts with synchronous drive belts on all variable air volume (VAV) fans. On constant volume (CV) fans, belts should be replaced at end-of-life with cogged V-belts.