Latest Update: Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/pranatengineers/public_html/admin/connection.php on line 4 Pranat Engineers Pvt. Ltd. Second time awarded by SEEM for the Best Energy Audit Company in India. | PEPL working with ISTSL on feasibility analysis for setting up Solar Power Plants in various States. | PEPL got the Mandatory Energy Audit Work Of Mathura Refinery, Mathura |
Compressed Air Install a control system to coordinate multiple air compressors. Study part-load characteristics and cycling costs to determine the most-efficient mode for operating multiple air compressors. Avoid over sizing — match the connected load. Load up modulation-controlled air compressors. (They use almost as much power at partial load as at full load.) Turn off the back-up air compressor until it is needed. Reduce air compressor discharge pressure to the lowest acceptable setting. (Reduction of 1 kg/cm2 air pressure (8 kg/cm2 to 7 kg/cm2) would result in 9% input power savings. This will also reduce compressed air leakage rates by 10%) Use the highest reasonable dryer dew point settings. Turn off refrigerated and heated air dryers when the air compressors are off. Use a control system to minimize heatless desiccant dryer purging. Minimize purges, leaks, excessive pressure drops, and condensation accumulation. (Compressed air leak from 1 mm hole size at 7 kg/cm2 pressure would mean power loss equivalent to 0.5 kW) Use drain controls instead of continuous air bleeds through the drains. Consider engine-driven or steam-driven air compression to reduce electrical demand charges. Replace standard v-belts with high-efficiency flat belts as the old v-belts wear out. Use a small air compressor when major production load is off. Take air compressor intake air from the coolest (but not air conditioned) location. (Every 5 C reduction in intake air temperature would result in 1% reduction in compressor power consumption) Use an air-cooled after cooler to heat building makeup air in winter. Be sure that heat exchangers are not fouled (e.g. ~ with oil). Be sure that air/oil separators are not fouled. Monitor pressure drops across suction and discharge filters and clean or replace filters promptly upon alarm. Use a properly sized compressed air storage receiver. Consider alternatives to compressed air such as blowers for cooling, hydraulic rather than air cylinders, electric rather than air actuators, and electronic rather than pneumatic controls. Use nozzles or venturi-type devices rather than blowing with open compressed air lines. Check for leaking drain valves on compressed air filter/regulator sets. Certain rubber-type valves may leak continuously after they age and crack. In dusty environments, control packaging lines with high-intensity photocell units instead of standard units with continuous air purging of lenses and reflectors. Establish a compressed air efficiency-maintenance program. Start with an energy audit and follow-up, then make a compressed air efficiency-maintenance program a part of your continuous energy management program.