energy savings through compressed air - kwhydro · a) the ability to off load the air compressor b)...
TRANSCRIPT
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Energy Savings Through Compressed Air
Peter Gray, Air Solutions Canada
Thursday June 22
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• Today, my objective is to point you in the right direction of some “low cost/no cost” areas to focus on:
• Reducing the hydro consumption of a compressed air system is typically simplistic.
• From our experience there are some easy, low hanging fruit to pick in most compressed air systems.
Low Hanging Fruits
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1. Leak Detection
2. Zero Loss Condensate Drain Traps
3. Selecting The Correct Type of Air Compressor
4. The Importance of Storage
5. Where To Start
6. Heat Recovery
Agenda
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What do leaks cost you?
Costs were calculated using 100psig, with an average energy rate of $0.13/kWh, and assuming 6,240 annual running hours and 4.4cfm/bhp
Pick #1 – Leak Detection
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Step One: Ultrasonic leak detection
Step Two: Calculate energy and compressed air loss
Step Three: Repair the leaks
Step Four: Enjoy ROI
How Do You Detect Leaks?
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• Our client was operating 3 x 150hp compressors • We identified 141 leaks in their system
• Following a leak detection study and repair of these leaks, we enabled the “shutdown” of one 150hp compressor and annual energy savings of $67,000
Our Biggest Success to Date
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What Does A Leak Detection Look Like
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What Does A Leak Detection Look Like After We Fix Them:
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• How many pieces of equipment are in a compressed air station
• A solenoid drain discharging every two minutes for 10 seconds requires approximately 2.2 kW electrical power
• 2.2 kW x $0.13 x 12 Hours/day x 260 = $892.32 in annual energy savings
• Zero loss drains qualify for $100 prescriptive incentives per drain
Pick #2 – Zero Loss Condensate Drain Traps
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What Does A Zero Loss Drain Cost ?
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- $892.32
- $100.00
- $892.32
- $100.00
- $892.32
- $100.00
- $892.32
- $100.00
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• Modulation• Load/Idle• Variable Speed
What’s best for you:
Pick #3 – A Perfect Match
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Modulation Control
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Load Idle
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• Motor power consumption is exactly matched to CFM consumption
• Start-up kW “in rush current” is almost completely eliminated
* One size does not fit all
Variable Speed
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• Compressed air best practice required a minimum of 3 gallons of primary (wet) storage for every 1cfm
• 1000 cfm of compressed air requires a minimum of 3000 gallons of storage
• Therefore, an air compressor producing 500cfm, requires a minimum storage tank of 1,500 gallons
Pick #4 – The Importance of Storage
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The benefits of correctly sized storage are:
a) The ability to off load the air compressor
b) Avoid pressure drops and swings
c) Reduce the velocity of the compressed air speed.
d) Cooling the compressed air temperature
e) Condense moisture from the system using cyclonic motion, gravity and cooling. All of these are free
f) Reducing down stream filtration + dryer moisture loading
Pick #4 – The Importance of Storage
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Example of Lack of Storage
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Corrected by Adequate Storage
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15%
15%
70%
Maintenance
Equipment
Electricity
Cost of Owning an Air Compressor
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Step 1 We recommend you perform an Energy Audit
* You cant improve what you dont measure
Where Do We Begin ?
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Step Two: We monitor pressure in PSIG over a 9 day period
Air Demand Analysis
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Step Three: We measure the flow and volume in CFM over a 9 day period via flow controller
Air Demand Analysis
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Step Four We monitor the hydro power consumed by the main drive motor to establish the peak kW and kW/hr’s
Air Demand Analysis
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Friday - At Full Production Step 5: The Report Air Demand Analysis
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With No Production 90kW of Energy
Desiccant Air Dryer Purging
Sunday – No Production
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The ‘End Game’
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Executive Summary
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29
Executive Summary
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Executive Summary
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RETROFIT PROGRAM SUCCESS …..
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205 196
1
100
Applications Completed
Our Success Has Included …..
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To Date We Have Managed To Reduce Over…
5,400 Peak kW
Peak kW Reduction
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To Date ……. Almost Twelve Million kW/hr’s have been eliminated all one click
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This has resulted in over $3 Million dollars in hydro savings all one click
Hydro Savings
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Heat Recovery -Air
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Heat Recovery -Water
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Join Us Anytime At Our Facility …..
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Telephone: 905-628-2662
“Everything Compressed Air”
Follow Us On Social Media!
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Questions ?
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Thank you & Cheers !
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