(1) purchase of air compressor

a. Taking into account the time of purchase only machines are cheap, poor quality found use, operation unstable, long downtime, resulting in production downtime.

b. the time of purchase only consider the stability of operation, ignore the energy consumption ratio of the accumulated enormous waste.

c. ignored procurement service provider security, troubleshooting can not attend in time, parts procurement inconvenience, are causing unnecessary losses.

(2) System Planning

a. air compressor capacity too much, resulting in higher compressor energy waste load.

b. filter installed too many large pressure loss, high energy waste.

c. air compressor is not a centralized gas supply, but the scattered distribution throughout the whole plant, pipelines independent, not only increase the purchase of equipment costs, also increased the cost and operation and maintenance costs of pipeline.

d. air compressor room ambient temperature is too high, the equivalent of reducing the compressor efficiency, exhaust to reduce energy consumption to increase. Every increase in temperature 100 ° C, equivalent to about 3% lower compressor efficiency.

e. pipeline layout is unreasonable, elbow joints too much, increase the pressure loss.

(3) system control and management

a. air compressor outlet pressure value is set too high, resulting in increased energy consumption, the formation of a waste. Pressure for each additional 1 kg/cm2, energy consumption increased by about 6%.

b. more than one compressor while at the same time for loading and unloading for capacity control action or (part load) operation, increase energy waste;

c. poor machine maintenance or expired without maintenance, the accumulation of small problems into big trouble, man-made machines to shorten life expectancy.

d. room had dirty environment, causing air compressor filter, oil filter and cooling oil separator oil change frequently.

e. pipeline precision filter does not change in time, resulting in excessive pressure loss and energy waste.

f. I do not know the seriousness of pipeline leaks, the new purchase to supplement the insufficient amount of air compressor, resulting in waste. To a 7 kg/cm2g, 10 mm leak point calculation, assuming that electricity one yuan / kWh, 8000 hours a year would be a waste of 320,000 yuan in electricity bills.