Formulae used:

Energy Cost = Motor Power X Power Factor X Hours Operation X Service Factor.

One of the Cheaper and Popular brand of Screw Compressors in Malaysia.

100 HorsePower [ 75 Kw ] Screw type Air Compressor.

Operation of: — 24 hours X 365 days a year.

Energy cost of RM 0.25 per Kwh, it will be higher if energy cost goes up!

More presentation call or contact me

at 6012-4982163

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List all the air operated equipments and devices.

Decide how they are use, all the time or some of the time. Select load or use factor for the devices or equipments.

Example; 15%, 25%, 35%, etc., use factor, if use all the time the use factor will be 100%.

Determine the pressure range and volume of air required for each and every devices and equipments.

The Air Compressor should maintain a minimum pressure at least equal to the highest of these pressures ranges.

Use formulae:

P1V1 = P2V2

Use Formulae:

Air Consumption = Vl / u+l

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Unstable networks ( systems ) frequently switch between load and idle [no-load]

Energy losses due to blowdown

- 60 kw Compressor
- Discharge time approximately 1 minute
- 15 load – idle cycle per hour
- Receiver tank volume 2000 l
- 4000 hours in operation per year
- Energy cost RM0.25 per kwh

4000 hours per year X 15 load – idle cycle per hour

60,000 load – idle cycles per year X 1 minute

60,000 minutes blowdown =1000 hours blowdown time

Therefore;

Energy Loss = 1000 hours blowdown time X 45/2 kw [ consumption when idling on blowdown]

22,500 kwh X 25 cents

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Based on Average capacity utilization [ 70% ] on All Compressors

If a conventional compressor is operated at 70% of its maximum capacity, then it idles for up to 30% of the time. [ Note, these idle time you need to pay ], using a quarter of the energy required for a full load.

Average utilization [ 70% ] of a 75 KW Compressor

=> 70% full load

=> 30% idling with approximately 25 – 30% of full load consumption

4000 hours per year X 30% idle X 25% of 75 KW X electrical cost [RM0.26/kwh]

1200 hours X 18.75 KW X 25 (cent/kwh)

8000 hours per year X 30% idle X 25% of 75 KW X electrical cost [RM0.26/kwh]

2400 hours X 18.75 KW X 25 (cent/kwh)

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Planning & Optimising YOUR Compressed Air System

3 Stages

Stage 1 = Measurement

Stage 2 = Analysis

Stage 3 = Simulation

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Measuring volume flow with Energy Balancing System

Analysing YOUR compressors provide the following important informations:

- Leakage
- Current pressure band
- Daily & weekly curves of compressed air demand
- Energy consumed by the Compressor or compressors
- Utilization of each & every compressors [ Load / Idle / Stand-by Time ]

Now, we have the basic information and we can start

” **Thinking** ”

about how to optimize YOUR Compressed Air System.

Simulation by

Change of Pressure Band.

Replacement of one or more old inefficient standard compressor or compressors with modern compressor or compressors.

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4 ways to measure of the actual values

1. Venturi Meter, —- a method using apecture.

2. Method using a pressure head sensor.

3. Calorimeter,

4. Ultrasound flow measurement.

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Average Overall Cost of a Compressed Air Station !

Generating or producing Compressed Air Costs a lot of energy, therefore Money !

Studies show that the maximum Free Air Delivery is only needed at peak time, and most Compressors are only used at 50 – 70% of their capacity.

2. Blowdown time

3. Pressure at Compressor Outlet

4. High Pressure Differential

5. Direct Drive

6. Leaks

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I can help you earn at least 3X the compressor price!

Would you be interested?

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The Biggest Rotary Twin Screw Oil-Injected Air Compressor install in Penang in year 1990.

2009, all the Compressors from this factory landed in Scrapyard about 5 years later.

2nd Biggest Centrifugal Compressor install in a Factory in Perai, Penang.

500 Horsepower, 415 V

The Biggest Dynamic Compressor in Penang.

800 Kilowatt, 11 KV electric Motor

External Air Filter for 3-stage Centrifugal Air Compressor, install in a factory in Perai, Penang, Malaysia.

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