Training Manual on Energy Efficiency - APO Asian Productivity ...
Training Manual on Energy Efficiency - APO Asian Productivity ...
Training Manual on Energy Efficiency - APO Asian Productivity ...
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<strong>Energy</strong> <strong>Efficiency</strong> in Compressed Air Systems<br />
(Every 5<br />
• Use an air-cooled after-cooler to heat building makeup air in winter.<br />
• Be sure that heat exchangers are not fouled (e.g. with oil).<br />
• Be sure that air/oil separators are not fouled.<br />
• M<strong>on</strong>itor pressure drops across sucti<strong>on</strong> and discharge filters, and clean or<br />
replace filters promptly up<strong>on</strong> increase in pressure drop.<br />
• Use a properly sized compressed air storage receiver. Minimize disposal<br />
costs by using lubricant that is fully demulsible and an effective oil–water<br />
separator.<br />
• C<strong>on</strong>sider alternatives to compressed air such as blowers for cooling,<br />
hydraulic rather than air cylinders, electric rather than air actuators, and<br />
electr<strong>on</strong>ic rather than pneumatic c<strong>on</strong>trols.<br />
• Use nozzles or Venturi-type devices rather than blowing with open<br />
compressed air lines.<br />
º (Compressed air leak from 1mm hole size at 7 kg/cm<br />
• Use drain c<strong>on</strong>trols instead of c<strong>on</strong>tinuous air bleeds through the drains.<br />
• C<strong>on</strong>sider engine-driven or steam-driven air compressi<strong>on</strong> to reduce electrical<br />
demand charges.<br />
• Replace standard V-belts with high-efficiency flat belts as the old V-belts<br />
wear out.<br />
• Take air compressor intake air from the coolest (but not air-c<strong>on</strong>diti<strong>on</strong>ed)<br />
locati<strong>on</strong>.<br />
C reducti<strong>on</strong> in intake air temperature will result in a 1% reducti<strong>on</strong><br />
in compressor power c<strong>on</strong>sumpti<strong>on</strong>.)<br />
2 pressure would<br />
mean power loss equivalent to 0.5 kW.)<br />
• Check for leaking drain valves <strong>on</strong> compressed air filter/regulator sets.<br />
Certain rubber-type valves may leak c<strong>on</strong>tinuously after they age and crack.<br />
Replacement is the best choice.<br />
• In dusty envir<strong>on</strong>ments, c<strong>on</strong>trol packaging lines with high-intensity photocell<br />
units instead of standard units with c<strong>on</strong>tinuous air purging of lenses and<br />
reflectors.<br />
• Establish a compressed air efficiency-maintenance program. Start with<br />
an energy audit and follow-up, then make a compressed air efficiencymaintenance<br />
program a part of your c<strong>on</strong>tinuous energy management<br />
program.<br />
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