• Consider variable speed drive for variable load on positive displacement compressors.
• Use a synthetic lubricant if the compressor manufacturer permits it.
• Be sure lubricating oil temperature is not too high (oil degradation and lowered viscosity) and not too low (condensation contamination).
• Change the oil filter regularly.
• Periodically inspect compressor intercoolers for proper functioning.
• Use waste heat from a very large compressor to power an absorption chiller or preheat process or utility feeds.
• Establish a compressor efficiency-maintenance program. Start with an energy audit and follow-up, then make a compressor efficiency-maintenance program a part of your continuous energy management program.
Showing posts with label tips. Show all posts
Showing posts with label tips. Show all posts
Sunday, February 10, 2008
TIPS FOR ENERGY EFFICIENCY IN MOTORS
• Properly size to the load for optimum efficiency.
(High efficiency motors offer of 4 - 5% higher efficiency than standard motors)
• Use energy-efficient motors where economical.
• Use synchronous motors to improve power factor.
• Check alignment.
• Provide proper ventilation
(For every 10oC increase in motor operating temperature over recommended peak, the motor life is estimated to be halved)
• Check for under-voltage and over-voltage conditions.
• Balance the three-phase power supply.
(An Imbalanced voltage can reduce 3 - 5% in motor input power)
• Demand efficiency restoration after motor rewinding.
(If rewinding is not done properly, the efficiency can be reduced by 5 - 8%)
(High efficiency motors offer of 4 - 5% higher efficiency than standard motors)
• Use energy-efficient motors where economical.
• Use synchronous motors to improve power factor.
• Check alignment.
• Provide proper ventilation
(For every 10oC increase in motor operating temperature over recommended peak, the motor life is estimated to be halved)
• Check for under-voltage and over-voltage conditions.
• Balance the three-phase power supply.
(An Imbalanced voltage can reduce 3 - 5% in motor input power)
• Demand efficiency restoration after motor rewinding.
(If rewinding is not done properly, the efficiency can be reduced by 5 - 8%)
TIPS FOR ENERGY EFFICIENCY IN PUMPS
• Operate pumping near best efficiency point.
• Modify pumping to minimize throttling.
• Adapt to wide load variation with variable speed drives or sequenced control of smaller units.
• Stop running both pumps -- add an auto-start for an on-line spare or add a booster pump in the problem area.
• Use booster pumps for small loads requiring higher pressures.
• Increase fluid temperature differentials to reduce pumping rates.
• Repair seals and packing to minimize water waste.
Balance the system to minimize flows and reduce pump power requirements.
• Use siphon effect to advantage: don't waste pumping head with a free-fall (gravity) return.
• Modify pumping to minimize throttling.
• Adapt to wide load variation with variable speed drives or sequenced control of smaller units.
• Stop running both pumps -- add an auto-start for an on-line spare or add a booster pump in the problem area.
• Use booster pumps for small loads requiring higher pressures.
• Increase fluid temperature differentials to reduce pumping rates.
• Repair seals and packing to minimize water waste.
Balance the system to minimize flows and reduce pump power requirements.
• Use siphon effect to advantage: don't waste pumping head with a free-fall (gravity) return.
Energy Saving Tips on Lighting System
Use energy efficient fluorescent lamps in place of “Conventional” fluorescent lamps.
Usel Compact Fluorescent Lamps (CFL's) in place of incandescent lamps.
Use metal halide lamps in place of mercury / sodium vapour lamps
Use High Pressure Sodium Vapour (HPSV) lamps for applications where colour rendering is not critical.
Installation of LED panel indicator lamps in place of filament lamps.
Grouping of lighting system, to provide greater flexibility in lighting control.
Installation of microprocessor based controllers
Optimum usage of day-lighting
Installation of "exclusive" transformer for lighting
Installation of servo stabilizer for lighting feeder
Installation of high frequency (HF) electronic ballasts in place of conventional ballasts.
Usel Compact Fluorescent Lamps (CFL's) in place of incandescent lamps.
Use metal halide lamps in place of mercury / sodium vapour lamps
Use High Pressure Sodium Vapour (HPSV) lamps for applications where colour rendering is not critical.
Installation of LED panel indicator lamps in place of filament lamps.
Grouping of lighting system, to provide greater flexibility in lighting control.
Installation of microprocessor based controllers
Optimum usage of day-lighting
Installation of "exclusive" transformer for lighting
Installation of servo stabilizer for lighting feeder
Installation of high frequency (HF) electronic ballasts in place of conventional ballasts.
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