The Hydraulic Air Compressor (HAC) Demonstrator Project · The Hydraulic Air Compressor (HAC)...
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The Hydraulic Air Compressor (HAC) Demonstrator Project Dean Millar B.Eng.(Hons), ARSM, PhD, FIMMM, CEM MIRARCO Mining Innovation, Bharti School of Engineering, Laurentian University Electrale Innovation Ltd Phone: 705-918-1613 Email: [email protected] Find out more: www.electrale.com
Transcript of The Hydraulic Air Compressor (HAC) Demonstrator Project · The Hydraulic Air Compressor (HAC)...
The Hydraulic Air
Compressor (HAC)
Demonstrator Project
Dean MillarB.Eng.(Hons), ARSM, PhD, FIMMM, CEM
MIRARCO Mining Innovation,
Bharti School of Engineering, Laurentian University
Electrale Innovation Ltd
Phone: 705-918-1613
Email: [email protected]
Find out more: www.electrale.com
Q. What will be demonstrated?
A. Isothermal compressors that are easy to maintain will be cheaper to run
Shaded area =
(Minimum) compression work
12%
12%
76%
Equipment andinstallation
Maintenance
Electricity
US DOE: OFFICE OF INDUSTRIAL TECHNOLOGIES*
https://www.energystar.gov/ia/business/industry/compressed_air1.pdf
*50 kWe motor on the compressor, 2 shifts per day, 5 days per week, $0.05/kWh, 10 years
Modelled and measured processes are both nearly isothermal
0
2
4
6
8
10
12
0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Water discharge (m3/s)
Te
mp
era
ture
in
cre
ase
in
do
wn
co
me
r (m
K)
dT - BM38A
dT - Pavese at al.
0
2
4
6
8
10
12
0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Water discharge (m3/s)
Te
mp
era
ture
incre
ase
in
do
wn
co
me
r (m
K)
dT - BM36A
dT - Pavese at al.
DDDDt
Optimum compresion efficiencies are around 75 to 80%
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25
50
75
100
125
150
175
200
225
250
275
300
0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Water discharge (m3/s)
Fre
e A
ir D
eliv
ery
(S
cfm
)
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
Effic
iency
(%)
BM36A & BM38A FAD
HAC Mk 14 FAD
BM36A & BM38A Eff (%)
HAC Mk 14 Eff (%)0
25
50
75
100
125
150
175
200
225
250
275
300
0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Water discharge (m3/s)
Fre
e A
ir D
eliv
ery
(S
cfm
)
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
Effic
iency
(%)
As we explore the performance map of Dynamic Earth HAC
we expect to obtain even better performance
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10
QH/D
Inp
ut
ma
ss f
low
ra
te o
f a
ir (
kg
/s))
RaggedChutes
DynamicEarth
We are thinking about HAC designs for mine installation
Integrated cooling
No mixing head
Sump in half of drift
Raise forms riser
Co-axial downcomer
Open ended separator
All instruments at base
Simple PID loop
Detrainment occurs at low water flow rates
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~95% of the spend on the HAC Demonstrator was spent in
Northern Ontario / Sudbury
The rubber lined pipe appears rougher than steel pipe
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Literature value: 0.000150 mOur value: 0.000058 mUnlined steel pipe (low): 0.000045 m Unlined steel pipe (high): 0.000090 m
Zero pressure in the downcomer means water ‘free-fall’
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-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (m
H2O
)
Time (s)
600 rpm 700 rpm650 rpm 750 rpm 800 rpm 850 880 rpm
0.27m -0.03m0.15m -0.02m -0.07m - 0.20m
P1P1 (@0.72 m below forebay base)
-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (
mH
2O
)Time (s)
0.98m 0.50m 0.39m 0.21m -0.11m -0.07m -0.13m
P1P2 (@1.50m below forebay
-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (m
H2O
)
Time (s)
1.62m 1.35m 1.24m 1.15m 0.97m 1.01m 0.90m
P2P2 (@2.25m below forebay
-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (
mH
2O
)
Time (s)
2.23m 2.00m 1.87m 1.80m 1.64m1.59m 1.47
P2P1 (@3.00m below forebay
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-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (m
H2O
)
Time (s)
600 rpm 700 rpm650 rpm 750 rpm 800 rpm 850 880 rpm
0.27m -0.03m0.15m -0.02m -0.07m - 0.20m
P1P1 (@0.72 m below forebay base)
-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (
mH
2O
)Time (s)
0.98m 0.50m 0.39m 0.21m -0.11m -0.07m -0.13m
P1P2 (@1.50m below forebay
-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (m
H2O
)
Time (s)
1.62m 1.35m 1.24m 1.15m 0.97m 1.01m 0.90m
P2P2 (@2.25m below forebay
-1.00
0.00
1.00
2.00
3.00
0 200 400 600 800 1000 1200 1400 1600Pre
ssu
re (
mH
2O
)
Time (s)
2.23m 2.00m 1.87m 1.80m 1.64m1.59m 1.47
P2P1 (@3.00m below forebay
Zero pressure in the downcomer means water ‘free-fall’
Detrainment occurs at low water flow rates
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