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u
t
v
o
l
t
a
g
e
a
n
d
f
r
e
q
u
e
n
c
y
t
o
c
o
n
t
r
o
l
t
h
e
r
o
t
a
t
i
o
n
a
l
s
p
e
e
d
o
f
t
h
e
i
n
d
u
c
t
i
o
n
m
o
t
o
r
[
1
6
]
,
[
1
7
]
.
V
F
Ds
p
r
o
v
id
e
s
e
v
e
r
a
l
a
d
v
a
n
t
a
g
es
,
t
h
e
m
o
s
t
s
i
g
n
i
f
ic
a
n
t
o
f
w
h
i
c
h
i
s
t
h
at
t
h
e
y
r
e
d
u
c
e
t
h
e
e
n
e
r
g
y
c
o
n
s
u
m
p
t
i
o
n
a
n
d
d
e
m
a
n
d
o
f
e
le
c
t
r
i
c
m
o
t
o
r
-
d
r
i
v
e
n
p
r
o
c
es
s
es
w
i
t
h
h
i
g
h
e
f
f
ic
i
e
n
c
y
v
a
l
u
e
s
e
v
e
n
w
h
e
n
t
h
e
e
l
e
c
t
r
i
c
m
o
t
o
r
i
s
o
p
e
r
a
t
i
n
g
at
l
o
w
c
a
p
a
ci
t
y
[
1
8
]
.
I
n
r
esear
ch
[
1
0
]
d
id
n
o
t
ca
lcu
late
th
e
air
f
lo
w
r
ate
r
eq
u
ir
em
e
n
t
b
ased
o
n
s
tatic
p
r
ess
u
r
e
co
n
d
itio
n
s
th
at
o
cc
u
r
in
th
e
d
u
s
t
co
llecto
r
s
y
s
tem
b
u
t
o
n
ly
b
ased
o
n
th
e
m
i
n
im
u
m
air
f
lo
w
r
ate
r
eq
u
ir
e
m
en
t
,
wh
ile
in
r
esear
ch
[
1
3
]
d
id
n
o
t
tak
e
m
ea
s
u
r
em
e
n
ts
in
d
ata
co
l
lectio
n
,
th
e
est
im
ate
was
o
n
ly
o
b
tain
ed
f
r
o
m
a
f
o
r
m
u
la
wh
er
e
r
ed
u
cin
g
m
o
to
r
s
p
ee
d
b
y
1
0
% wo
u
ld
r
ed
u
ce
p
o
wer
co
n
s
u
m
p
tio
n
b
y
2
7
% [
1
3
]
,
[
1
4
]
.
T
h
is
r
esear
ch
in
v
esti
g
ated
th
e
en
er
g
y
-
s
av
in
g
an
aly
s
is
o
f
a
s
in
g
le
u
n
it
o
f
a
d
u
s
t
co
llecto
r
f
an
m
o
to
r
u
tili
ze
d
in
an
elec
tr
ic
ar
c
f
u
r
n
ac
e
(
E
AF)
r
ef
in
in
g
p
r
o
ce
s
s
with
in
th
e
s
teel
in
d
u
s
tr
y
.
T
h
e
m
o
to
r
h
as
a
p
o
wer
ca
p
ac
ity
o
f
1
,
1
0
0
k
W
.
T
h
e
V
FD
co
n
tr
o
l
s
y
s
tem
is
p
r
o
p
o
s
ed
to
b
e
im
p
lem
en
ted
b
y
co
n
s
i
d
er
in
g
h
ig
h
an
d
lo
w
lo
ad
s
tatic
p
r
ess
u
r
e
co
n
d
itio
n
s
.
T
h
e
h
ig
h
co
n
d
itio
n
o
cc
u
r
s
d
u
r
in
g
th
e
m
a
x
im
u
m
lo
a
d
wh
en
t
h
e
m
eltin
g
p
r
o
ce
s
s
is
ac
tiv
e
with
5
0
Hz
co
n
tr
o
lled
f
r
e
q
u
en
c
y
f
r
o
m
VFD.
On
th
e
o
th
er
h
a
n
d
,
th
e
l
o
w
co
n
d
itio
n
o
cc
u
r
s
d
u
r
in
g
th
e
m
in
im
u
m
lo
ad
,
wh
en
th
e
m
elt
in
g
p
r
o
ce
s
s
is
id
le
with
1
5
Hz
s
et
b
y
VFD.
T
h
e
en
er
g
y
s
av
in
g
s
in
th
is
s
tu
d
y
ar
e
an
aly
ze
d
b
y
a
co
m
p
a
r
is
o
n
o
f
th
e
r
ea
l
p
o
we
r
c
o
n
s
u
m
p
tio
n
b
e
f
o
r
e
an
d
af
ter
th
e
im
p
lem
en
tat
io
n
o
f
VFD,
u
s
in
g
ac
tu
al
m
ea
s
u
r
em
en
ts
as th
e
b
a
s
is
.
2.
M
E
T
H
O
D
Du
s
t
co
llecto
r
s
r
em
o
v
e
an
d
f
i
lter
d
u
s
t,
g
as,
a
n
d
s
m
o
k
e
f
r
o
m
s
m
eltin
g
in
t
h
e
s
teel
in
d
u
s
t
r
y
,
en
s
u
r
in
g
th
at
th
e
air
ex
itin
g
th
e
s
m
eltin
g
ch
im
n
e
y
is
s
af
e
f
o
r
wo
r
k
e
r
s
an
d
th
e
s
u
r
r
o
u
n
d
i
n
g
c
o
m
m
u
n
ity
[
8
]
,
[
1
9
]
.
T
h
e
d
u
s
t
co
llecto
r
o
p
e
r
ates
co
n
tin
u
o
u
s
ly
with
o
u
t
in
ter
r
u
p
tio
n
,
wh
e
r
e
as
th
e
s
m
eltin
g
p
r
o
ce
s
s
o
p
e
r
at
es
o
n
-
id
le,
with
th
e
s
m
eltin
g
f
u
r
n
ac
e
p
o
u
r
i
n
g
s
m
e
lted
p
r
o
d
u
cts
in
to
th
e
lad
le
f
u
r
n
ac
e
to
im
p
r
o
v
e
th
e
m
etal
s
tr
u
ctu
r
e
co
n
te
n
t
an
d
r
ep
len
is
h
s
cr
ap
i
n
to
th
e
s
m
el
tin
g
f
u
r
n
ac
e
[
2
0
]
.
A
d
u
s
t
co
llect
o
r
u
s
es
a
m
o
to
r
f
an
to
ex
tr
ac
t
d
u
s
t,
g
as,
an
d
s
m
o
k
e
f
r
o
m
th
e
s
m
eltin
g
p
r
o
ce
s
s
,
wh
ich
is
th
en
d
is
tr
ib
u
ted
to
th
e
c
h
im
n
ey
v
ia
a
b
ag
f
ilter
[
2
1
]
,
[
2
2
]
.
Feed
in
g
air
s
u
p
p
ly
to
th
e
ex
is
tin
g
d
u
s
t
co
llecto
r
s
y
s
tem
d
u
r
in
g
th
e
s
m
eltin
g
p
r
o
ce
s
s
id
le
is
h
ig
h
er
th
a
n
th
e
n
ee
d
s
,
s
o
it
is
n
ec
es
s
ar
y
to
r
ed
u
ce
th
e
air
f
lo
w
r
ate
b
y
lo
wer
in
g
th
e
r
o
tatio
n
al
s
p
ee
d
o
f
th
e
elec
tr
ic
m
o
to
r
f
an
u
s
in
g
a
VFD
[
2
3
]
,
[
2
4
]
.
I
n
a
f
a
n
m
o
to
r
ch
ar
ac
ter
is
tics
,
th
e
air
f
lo
w
r
ate
is
d
ir
ec
tly
p
r
o
p
o
r
tio
n
al
to
th
e
r
o
tatio
n
al
s
p
ee
d
o
f
th
e
f
an
m
o
to
r
,
th
e
p
r
ess
u
r
e
is
p
r
o
p
o
r
tio
n
al
to
th
e
s
q
u
ar
e
o
f
th
e
r
o
tatio
n
al
s
p
ee
d
o
f
th
e
f
an
m
o
to
r
,
an
d
th
e
p
o
wer
c
o
n
s
u
m
p
ti
o
n
is
p
r
o
p
o
r
tio
n
al
to
th
e
th
ir
d
p
o
wer
o
f
th
e
r
o
tatio
n
al
s
p
ee
d
o
f
th
e
f
an
m
o
to
r
.
T
h
o
s
e
r
elatio
n
s
h
ip
s
ab
o
v
e
a
r
e
s
tated
in
(
1
)
,
(
2
)
,
an
d
(
3
)
s
u
b
s
eq
u
en
tl
y
[
1
8
]
,
[
2
5
]
.
2
1
=
2
1
(1
)
2
1
=
(
2
1
)
2
(
2
)
2
1
=
(
2
1
)
3
(
3)
W
h
er
e
1
=
p
o
wer
at
h
ig
h
le
v
el
,
2
=
p
o
wer
at
lo
w
lev
el
,
1
=
s
tatic
p
r
ess
u
r
e
at
h
ig
h
lev
el
,
2
=
s
tati
c
p
r
ess
u
r
e
at
lo
w
lev
el
,
1
=
m
o
to
r
s
p
ee
d
at
h
ig
h
le
v
el
,
2
=
m
o
to
r
s
p
ee
d
l
o
w
lev
el
,
1
=
a
ir
f
lo
w
r
ate
h
ig
h
lev
el
,
an
d
2
=
a
ir
f
lo
w
r
ate
lo
w
lev
el
.
T
h
e
r
ec
o
r
d
in
g
p
r
im
a
r
y
d
ata
f
r
o
m
th
e
d
u
s
t
co
llecto
r
f
an
m
o
t
o
r
.
Data
f
o
r
elec
tr
ical
p
ar
am
et
er
s
,
air
f
lo
w
r
ate,
an
d
s
tatic
p
r
ess
u
r
e
wer
e
r
ec
o
r
d
e
d
s
im
u
ltan
eo
u
s
ly
at
f
o
r
s
ev
er
al
d
ay
s
,
b
ef
o
r
e
a
n
d
af
te
r
th
e
in
s
tallatio
n
o
f
th
e
VFD.
Fig
u
r
e
1
s
h
o
ws
a
d
u
s
t
co
llecto
r
s
y
s
tem
with
VFD
to
co
n
tr
o
l
th
e
r
o
tatio
n
al
s
p
ee
d
o
f
th
e
f
an
m
o
t
o
r
ac
co
r
d
in
g
to
th
e
s
m
eltin
g
c
o
n
d
itio
n
s
.
I
n
Fig
u
r
e
1
,
s
h
o
ws
th
e
p
r
o
ce
s
s
o
f
with
d
r
awin
g
d
u
s
t
f
r
o
m
th
e
s
m
eltin
g
p
r
o
ce
s
s
in
th
e
elec
tr
ic
a
r
c
f
u
r
n
ac
e
th
r
o
u
g
h
d
u
cti
n
g
u
s
in
g
a
f
a
n
m
o
t
o
r
in
s
talled
a
f
te
r
t
h
e
b
a
g
h
o
u
s
e
f
ilter
wh
ich
f
u
n
ctio
n
s
to
f
ilter
t
h
e
d
u
s
t
b
ef
o
r
e
it
is
d
is
ch
ar
g
ed
i
n
to
th
e
at
m
o
s
p
h
er
e
.
Fo
r
elec
tr
ical
d
ata
co
llectio
n
,
a
p
o
wer
lo
g
g
er
Hio
k
i
3
3
6
0
-
21
m
ea
s
u
r
i
n
g
in
s
tr
u
m
e
n
t
was
in
s
talled
o
n
th
e
3
.
3
k
V
m
ai
n
p
a
n
el
with
m
ea
s
u
r
em
en
t
tim
e
b
ef
o
r
e
an
d
af
ter
VFD
in
s
tallatio
n
in
a
f
ew
d
a
y
s
.
W
h
ile
tak
in
g
air
f
lo
w
r
ate
d
ata
is
tak
e
n
at
th
e
d
is
tr
ib
u
ted
co
n
tr
o
l
s
y
s
tem
(
DC
S)
wi
th
a
s
en
s
o
r
in
s
talled
at
th
e
p
o
in
t
o
f
en
tr
y
air
b
ef
o
r
e
th
e
b
ag
f
ilter
as
well
as
s
tatic
p
r
ess
u
r
e
d
ata
with
s
en
s
o
r
s
in
s
talled
in
th
e
in
co
m
in
g
air
an
d
o
u
tg
o
in
g
air
f
r
o
m
th
e
b
a
g
f
ilter
.
T
h
e
d
etailed
s
p
ec
if
icatio
n
d
ata
o
f
th
e
m
o
to
r
f
a
n
d
u
s
t c
o
llecto
r
an
d
VFD
is
s
h
o
wn
in
T
ab
les
1
an
d
2
.
T
o
f
in
d
o
u
t
th
e
m
o
t
o
r
s
p
ee
d
o
r
s
p
ee
d
r
ef
e
r
en
ce
t
h
at
p
r
o
d
u
ce
s
th
e
r
eq
u
ir
ed
air
f
lo
w
r
ate
ca
n
u
s
e
(
1
)
,
an
d
to
h
av
e
th
e
d
esire
d
m
o
to
r
f
a
n
s
p
ee
d
,
is
u
s
ed
(
4
)
[
2
6
]
,
[
2
7
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
Po
w
E
lec
&
Dr
i Sy
s
t
I
SS
N:
2088
-
8
6
9
4
E
n
erg
y
s
a
vin
g
o
f v
a
r
ia
b
le
fr
eq
u
en
cy
d
r
ive
in
d
u
s
t c
o
llecto
r
fa
n
mo
to
r
s
in
th
e
s
meltin
g
…
(
S
a
r
w
o
Tu
r
in
n
o
)
1401
=
×
120
(
4
)
W
h
er
e
th
e
f
r
eq
u
e
n
cy
r
ef
er
e
n
c
e
is
th
e
f
r
eq
u
e
n
cy
v
alu
e
n
ee
d
e
d
to
g
et
th
e
d
esire
d
m
o
t
o
r
s
p
e
ed
with
a
to
tal
o
f
6
p
o
les
as
s
h
o
wn
in
T
ab
le
1
.
R
e
d
u
ce
d
m
o
to
r
s
p
ee
d
b
ec
au
s
e
o
f
th
e
VFD
eq
u
i
p
p
ed
with
a
s
tat
ic
p
r
ess
u
r
e
s
en
s
o
r
will
au
to
m
atica
lly
s
en
s
e
ch
an
g
es
in
p
r
ess
u
r
e
an
d
will
ad
ju
s
t
th
e
m
o
to
r
s
p
ee
d
to
r
etu
r
n
t
o
th
e
o
p
tim
al
air
f
lo
w
r
ate
s
y
s
tem
.
Fro
m
p
r
ev
io
u
s
r
esear
ch
in
[
1
3
]
a
d
ec
r
ea
s
e
in
m
o
to
r
s
p
ee
d
will
r
esu
lt
in
a
d
ec
r
ea
s
e
in
p
o
wer
co
n
s
u
m
p
tio
n
.
T
h
e
f
o
llo
win
g
c
alcu
latio
n
ca
n
b
e
u
s
ed
to
ca
lcu
late
th
e
an
n
u
al
en
er
g
y
c
o
n
s
u
m
p
tio
n
o
f
a
m
o
t
o
r
f
an
th
at
d
o
es n
o
t
u
s
e
a
VFD
with
d
ata
g
en
er
ated
f
r
o
m
m
ea
s
u
r
e
m
en
t r
esu
lts
b
ef
o
r
e
a
VFD
is
i
n
s
talled
.
1
=
(
5
)
W
h
er
e
1
=
a
n
n
u
al
e
n
er
g
y
co
n
s
u
m
p
tio
n
with
o
u
t
VFD
,
=
m
o
to
r
f
an
’
s
en
e
r
g
y
c
o
n
s
u
m
p
tio
n
a
v
er
ag
e
with
o
u
t V
FD
,
an
d
=
o
p
er
atin
g
h
o
u
r
s
in
y
ea
r
.
Fig
u
r
e
1
.
Du
s
t
c
o
llecto
r
s
y
s
tem
with
VFD
an
d
m
ea
s
u
r
em
en
t p
o
in
ts
T
ab
le
1
.
Du
s
t c
o
llecto
r
f
an
m
o
to
r
s
p
ec
if
icatio
n
s
P
a
r
a
me
t
e
r
s
S
p
e
c
i
f
i
c
a
t
i
o
n
R
p
m
9
8
5
P
o
w
e
r
1
,
1
0
0
k
W
V
o
l
t
a
g
e
3
,
3
0
0
V
o
l
t
A
mp
e
r
e
2
3
5
A
F
r
e
q
5
0
Hz
P
o
l
e
6
F
l
o
w
r
a
t
e
6
2
0
,
0
0
0
m³
/
h
T
ab
le
2
.
VFD
Sp
ec
if
icatio
n
P
a
r
a
me
t
e
r
s
S
p
e
c
i
f
i
c
a
t
i
o
n
N
o
mi
n
a
l
c
a
p
a
c
i
t
y
1
,
5
0
0
k
V
A
/
1
,
2
5
0
k
W
R
a
t
e
d
o
u
t
p
u
t
3
P
h
a
se
,
3
,
3
0
0
V
,
2
6
0
A
P
o
w
e
r
s
u
p
p
l
y
M
a
i
n
c
i
r
c
u
i
t
3
,
3
0
0
V
5
0
H
z
,
-
2
0
%
t
o
-
1
0
%
C
o
n
t
r
o
l
c
i
r
c
u
i
t
1
p
h
a
se
2
0
0
/
2
2
0
V
,
5
0
/
6
0
H
z
P
r
o
t
e
c
t
i
o
n
I
P
4
0
P
a
n
e
l
d
i
m
e
n
si
o
n
3
,
5
0
0
W
;
1
,
2
0
0
D
;
2
,
5
5
0
H
A
p
p
r
o
x
.
w
e
i
g
h
t
4
,
8
0
0
k
g
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
6
9
4
I
n
t J Po
w
E
lec
&
Dr
i Sy
s
t
,
Vo
l.
16
,
No
.
2
,
J
u
n
e
20
25
:
1
3
9
9
-
1408
1402
T
h
e
an
n
u
al
en
er
g
y
co
n
s
u
m
p
ti
o
n
wh
en
u
s
in
g
VFD
is
o
b
tain
ed
f
r
o
m
m
ea
s
u
r
em
en
t
d
ata
a
n
d
ca
n
b
e
ca
lcu
lated
with
(
6
)
.
=
1
(
6
)
W
h
er
e
=
a
n
n
u
al
e
n
er
g
y
c
o
n
s
u
m
p
tio
n
with
VFD
,
1
=
m
o
to
r
f
a
n
’
s
en
er
g
y
co
n
s
u
m
p
tio
n
av
er
a
g
e
with
VFD
,
an
d
=
o
p
e
r
atin
g
h
o
u
r
s
in
a
y
ea
r
.
E
n
er
g
y
s
av
in
g
s
o
b
tain
ed
is
th
e
d
if
f
e
r
en
ce
b
etwe
en
th
e
en
er
g
y
u
s
ag
e
af
ter
th
e
in
s
tallatio
n
o
f
th
e
VFD
m
in
u
s
th
e
en
er
g
y
u
s
ag
e
b
ef
o
r
e
th
e
VFD
is
in
s
tall
ed
,
as
s
h
o
wn
in
(
7
)
[
2
5
]
,
[
2
8
]
,
[
2
9
]
.
=
1
−
(
7)
W
h
e
r
e
=
a
n
n
u
a
l
e
n
e
r
g
y
s
a
v
i
n
g
,
1
=
a
n
n
u
a
l
e
n
e
r
g
y
b
e
f
o
r
e
V
F
D
,
a
n
d
=
a
n
n
u
a
l
e
n
e
r
g
y
a
f
t
e
r
V
FD
.
3.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
3.
1
.
I
ni
t
ia
l
m
e
a
s
urem
ent
da
t
a
I
n
itial
m
ea
s
u
r
em
en
t
d
ata
is
c
ar
r
ied
o
u
t
b
ef
o
r
e
t
h
e
in
s
tallatio
n
o
f
th
e
VFD
,
as
s
h
o
wn
in
T
ab
le
3
.
T
ab
le
3
s
h
o
ws
t
h
er
e
ar
e
1
1
cy
cles
in
o
n
e
p
er
io
d
o
f
th
e
s
m
eltin
g
p
r
o
ce
s
s
an
d
in
o
n
e
c
y
cle
th
er
e
ar
e
two
co
n
d
itio
n
s
,
n
am
el
y
“
o
n
a
n
d
i
d
le
”
,
wh
er
e
th
e
“
on
”
is
th
e
co
n
d
itio
n
o
f
th
e
s
m
eltin
g
p
r
o
c
ess
an
d
th
e
“
id
le
”
co
n
d
itio
n
is
th
e
p
r
o
ce
s
s
o
f
p
o
u
r
in
g
th
e
s
m
elted
r
esu
lts
an
d
r
etr
iev
in
g
r
aw
m
ater
ials
f
o
r
t
h
e
n
ex
t
s
m
eltin
g
cy
cle.
T
h
e
m
ea
s
u
r
em
e
n
t
d
ata
s
h
o
ws
t
h
at
th
e
s
tatic
p
r
ess
u
r
e
v
al
u
e
d
e
cr
ea
s
es
d
u
r
in
g
t
h
e
s
m
eltin
g
co
n
d
itio
n
s
is
id
le
,
b
u
t
th
e
air
f
lo
w
r
ate
s
till
f
lo
ws
in
lar
g
e
q
u
a
n
titi
es
as
well
as
th
e
p
o
wer
co
n
s
u
m
p
tio
n
o
f
t
h
e
d
u
s
t
c
o
llecto
r
f
an
m
o
to
r
,
wh
ich
is
t
h
e
h
ig
h
est
v
alu
e
o
f
s
tatic
p
r
es
s
u
r
e
at
id
le
i
s
0
.
2
8
k
Pa
an
d
th
e
h
ig
h
est
v
alu
e
s
t
atic
p
r
ess
u
r
e
at
th
e
m
eltin
g
p
r
o
ce
s
s
o
n
is
1
.
6
3
k
Pa.
T
h
e
d
ata
in
T
ab
le
3
s
h
o
ws
th
at
th
er
e
ar
e
two
o
p
er
atin
g
c
o
n
d
iti
o
n
s
in
th
e
s
m
eltin
g
p
r
o
ce
s
s
,
s
o
th
e
m
o
to
r
f
an
d
u
s
t c
o
llecto
r
will b
e
ad
ju
s
ted
ac
co
r
d
in
g
to
th
e
c
o
n
d
itio
n
s
o
f
th
e
s
m
eltin
g
p
r
o
ce
s
s
,
n
am
ely
h
ig
h
c
o
n
d
itio
n
s
wh
en
s
m
eltin
g
wo
r
k
a
n
d
lo
w
co
n
d
itio
n
s
wh
en
t
h
e
s
m
eltin
g
p
r
o
ce
s
s
s
to
p
/id
le.
T
h
e
h
i
g
h
-
s
p
ee
d
m
o
to
r
f
an
co
n
d
itio
n
is
s
elec
ted
wh
en
t
h
e
s
m
eltin
g
co
n
d
itio
n
is
o
p
er
atin
g
b
ec
au
s
e
o
f
th
e
lar
g
e
am
o
u
n
t
o
f
d
u
s
t
an
d
g
as
d
u
e
to
th
e
s
m
eltin
g
p
r
o
ce
s
s
,
wh
ic
h
r
eq
u
ir
es
th
e
m
o
to
r
f
an
to
o
p
er
ate
u
n
d
er
m
ax
im
u
m
co
n
d
itio
n
s
.
W
h
en
th
e
lo
w
-
s
p
ee
d
m
o
to
r
f
a
n
co
n
d
itio
n
is
s
elec
ted
as
th
e
s
m
elter
s
to
p
s
o
p
er
atin
g
,
th
er
e
a
r
e
s
till
r
em
n
an
ts
o
f
d
u
s
t
f
r
o
m
th
e
s
m
elter
th
at
m
u
s
t b
e
d
is
p
o
s
ed
of
,
s
o
th
at
th
e
f
an
m
o
to
r
c
o
n
ti
n
u
es to
o
p
e
r
ate
at
a
lo
w
s
p
ee
d
.
3.
2
.
Ca
lcula
t
i
o
n
Fro
m
th
e
m
ea
s
u
r
em
en
t
r
esu
lts
,
t
h
e
d
ata
in
T
ab
le
3
is
th
e
a
v
er
ag
e
d
ata
f
r
o
m
ea
c
h
s
m
eltin
g
p
r
o
ce
s
s
co
n
d
itio
n
.
I
n
T
ab
le
3
,
it
s
h
o
ws
th
at
wh
en
th
e
s
tatic
p
r
ess
u
r
e
is
lo
w,
th
e
m
o
to
r
f
an
will
p
r
o
d
u
ce
a
h
ig
h
er
air
f
lo
w
r
ate
th
an
n
ee
d
e
d
,
s
o
th
at
it
wil
l
co
n
s
u
m
e
u
n
n
ec
ess
ar
y
en
er
g
y
an
d
ca
u
s
e
air
to
h
it
th
e
f
ilter
at
h
ig
h
v
el
o
city
s
o
th
at
it c
an
r
ed
u
c
e
th
e
f
ilter
life
life
tim
e
.
T
h
e
tar
g
et
is
to
r
ed
u
ce
th
e
air
f
l
o
w
r
ate
in
ac
co
r
d
an
ce
with
th
e
s
tatic
p
r
ess
u
r
e
co
n
d
itio
n
s
f
o
r
lo
w
lev
el
,
to
ca
lcu
late
th
e
air
f
lo
w
r
ate
in
ac
c
o
r
d
a
n
ce
with
th
e
s
ta
tic
p
r
ess
u
r
e
co
n
d
itio
n
s
w
h
er
e
f
r
o
m
th
e
in
itial
m
ea
s
u
r
em
en
t
r
esu
lts
,
th
e
lo
we
s
t
s
tatic
p
r
es
s
u
r
e
v
alu
e
is
at
cy
cle
1
0
o
f
0
.
1
6
k
Pa
,
th
e
(
2
)
an
d
d
ata
f
r
o
m
T
ab
le
3
is
u
s
ed
.
2
2
=
379
,
008
2
×
0
.
16
1
.
46
2
=
125
,
468
3
/
ℎ
T
h
e
ca
lcu
latio
n
o
f
t
h
e
r
e
q
u
ir
e
d
m
o
to
r
s
p
ee
d
to
g
e
n
er
ate
an
air
f
lo
w
r
ate
in
ac
co
r
d
an
ce
wit
h
lo
w
-
lev
el
co
n
d
itio
n
s
ca
n
b
e
d
eter
m
in
ed
b
ased
o
n
(
1
)
a
n
d
th
e
d
ata
p
r
o
v
id
ed
in
T
ab
le
3
.
2
=
842
×
125
,
468
3
/
ℎ
379
,
008
3
/
ℎ
2
=
279
T
o
ca
lcu
late
th
e
p
o
wer
co
n
s
u
m
ed
as th
e
m
o
to
r
s
p
ee
d
with
VFD
d
ec
r
ea
s
ed
,
in
(
3
)
a
n
d
d
at
a
in
T
a
b
le
3
ar
e
u
s
ed
.
2
=
882
×
(
279
842
)
3
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
Po
w
E
lec
&
Dr
i Sy
s
t
I
SS
N:
2088
-
8
6
9
4
E
n
erg
y
s
a
vin
g
o
f v
a
r
ia
b
le
fr
eq
u
en
cy
d
r
ive
in
d
u
s
t c
o
llecto
r
fa
n
mo
to
r
s
in
th
e
s
meltin
g
…
(
S
a
r
w
o
Tu
r
in
n
o
)
1403
2
=
3
2
.
1
k
W
Fro
m
th
e
r
esu
lts
o
f
t
h
ese
ca
lcu
latio
n
s
,
it
is
co
n
clu
d
ed
t
o
s
et
th
e
VFD
with
two
s
p
ee
d
co
n
d
itio
n
s
,
wh
er
e
in
th
e
lo
w
co
n
d
itio
n
th
e
VFD
is
s
et
w
ith
a
f
r
eq
u
en
cy
r
ef
er
en
ce
o
f
1
5
Hz
r
esu
ltin
g
in
a
m
o
to
r
r
o
tatio
n
o
f
2
7
9
r
p
m
a
n
d
an
air
f
lo
w
r
ate
o
f
1
2
5
.
4
6
8
m
³/h
a
n
d
its
p
o
we
r
co
n
s
u
m
p
tio
n
b
ec
o
m
es
3
2
k
W
.
W
h
ile
in
th
e
h
ig
h
co
n
d
itio
n
,
th
e
VFD
is
s
et
with
a
f
r
eq
u
en
c
y
o
f
5
0
Hz
,
o
r
th
e
f
an
m
o
to
r
wo
r
k
s
at
f
u
ll
s
p
ee
d
,
wh
ich
r
esu
lts
in
a
m
o
to
r
s
p
ee
d
o
f
8
4
2
r
p
m
with
an
air
f
lo
w
r
ate
o
f
3
7
9
.
0
0
8
m
³/
h
an
d
a
p
o
we
r
co
n
s
u
m
p
tio
n
o
f
8
8
2
k
W
,
as
f
o
u
n
d
in
T
ab
le
4
.
W
ith
th
e
two
co
n
d
itio
n
s
o
f
s
e
ttin
g
th
e
r
o
tatio
n
al
s
p
ee
d
o
f
th
e
f
an
m
o
to
r
o
n
th
e
VFD,
n
am
ely
lo
w
an
d
h
ig
h
,
wh
e
r
e
wh
en
th
e
VFD
co
n
d
itio
n
is
lo
w
,
th
e
m
o
to
r
s
p
e
ed
is
at
279
r
p
m
,
an
d
wh
en
t
h
e
VFD
co
n
d
itio
n
is
h
ig
h
,
th
e
m
o
to
r
s
p
ee
d
is
at
8
4
2
r
p
m
o
r
f
u
ll
s
p
ee
d
.
T
h
is
m
o
to
r
s
p
ee
d
is
b
ased
o
n
th
e
r
e
s
u
lts
o
f
th
e
ab
o
v
e
ca
lcu
latio
n
s
u
s
in
g
th
e
af
f
in
ity
law
to
p
r
o
d
u
ce
th
e
r
e
q
u
ir
ed
ai
r
f
lo
w
r
ate
b
ased
o
n
th
e
s
tatic
p
r
ess
u
r
e
co
n
d
itio
n
s
th
at
o
cc
u
r
in
th
e
d
u
s
t c
o
llecto
r
s
y
s
tem
.
T
ab
le
3
.
M
ea
s
u
r
em
e
n
t r
esu
lts
o
f
ea
ch
s
m
eltin
g
c
y
cle
o
n
th
e
d
u
s
t
c
o
llecto
r
f
an
m
o
to
r
b
ef
o
r
e
th
e
u
s
e
o
f
VFD
C
y
c
l
e
S
mel
t
i
n
g
p
r
o
c
e
ss
S
t
a
t
i
c
p
r
e
ss
u
r
e
(
k
P
a
)
A
i
r
f
l
o
w
r
a
t
e
(
m³
/
h
)
P
o
w
e
r
(
k
W
)
S
p
e
e
d
(
r
p
m)
C
y
c
l
e
1
On
1
.
6
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0
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3
0
8
8
4
7
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4
9
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9
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d
l
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1
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6
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7
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6
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3
8
4
0
T
ab
le
4
.
C
alcu
latio
n
r
esu
lts
o
f
ch
an
g
es in
air
f
lo
w
r
ate,
m
o
to
r
s
p
ee
d
,
an
d
p
o
wer
with
t
h
e
af
f
in
ity
law
No
V
F
D
l
e
v
e
l
S
e
t
p
o
i
n
t
(
%)
F
r
e
q
u
e
n
c
y
r
e
f
e
r
e
n
c
e
(
H
z
)
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p
e
e
d
r
e
f
e
r
e
n
c
e
(
r
p
m)
A
i
r
f
l
o
w
r
a
t
e
(
m³
/
h
)
P
o
w
e
r
(
k
W
)
1
Lo
w
0
15
2
7
9
1
2
5
,
4
6
8
32
2
H
i
g
h
1
0
0
50
8
4
2
3
7
9
,
0
0
8
8
8
2
3
.
3
.
M
ea
s
urem
ent
da
t
a
VF
D
T
h
e
d
ata
in
T
ab
le
4
is
u
s
ed
as
th
e
f
r
e
q
u
en
c
y
in
p
u
t
th
at
s
u
p
p
li
es
th
e
f
a
n
m
o
to
r
f
o
r
h
ig
h
an
d
l
o
w
s
p
ee
d
co
n
d
itio
n
s
.
T
h
e
m
ea
s
u
r
em
e
n
t
r
esu
lts
af
ter
VFD
in
s
talla
tio
n
ca
n
b
e
s
ee
n
in
T
ab
le
5
.
T
ab
le
5
s
h
o
ws
m
ea
s
u
r
em
en
t
d
ata
with
a
lo
w
f
r
e
q
u
en
cy
in
p
u
t
o
f
1
5
Hz
a
n
d
a
h
ig
h
f
r
eq
u
e
n
cy
o
f
5
0
Hz,
th
e
a
v
er
ag
e
p
o
wer
d
u
r
in
g
lo
w
(
i
d
le)
co
n
d
itio
n
s
is
4
1
.
2
k
W
an
d
t
h
e
av
er
ag
e
p
o
wer
d
u
r
in
g
h
i
g
h
(
o
n
)
co
n
d
itio
n
s
is
7
5
6
.
3
k
W
,
th
e
a
v
er
ag
e
m
o
to
r
s
p
ee
d
d
u
r
in
g
lo
w
co
n
d
itio
n
s
is
3
5
3
r
p
m
an
d
th
e
av
e
r
ag
e
m
o
to
r
s
p
ee
d
d
u
r
in
g
h
ig
h
c
o
n
d
itio
n
s
is
9
3
7
r
p
m
an
d
air
f
lo
w
d
u
r
in
g
lo
w
co
n
d
itio
n
s
is
1
5
8
,
4
4
6
m
3
/h
an
d
air
f
lo
w
d
u
r
in
g
h
i
g
h
co
n
d
itio
n
s
is
4
2
1
,
5
2
3
m
3
/h
.
T
h
e
d
i
f
f
er
en
ce
s
i
n
th
e
s
tatic
p
r
ess
u
r
e
an
d
air
f
lo
w
g
r
ap
h
s
b
e
f
o
r
e
a
n
d
af
te
r
in
s
tallatio
n
o
f
th
e
VFD
ar
e
s
h
o
wn
in
Fig
u
r
e
s
2
an
d
3
.
Fig
u
r
e
2
s
h
o
ws
th
e
s
tatic
p
r
ess
u
r
e
an
d
air
f
lo
w
o
f
th
e
s
m
eltin
g
p
r
o
ce
s
s
,
wh
er
e
it
ca
n
b
e
s
ee
n
b
ef
o
r
e
th
e
in
s
tallatio
n
o
f
th
e
VFD.
S
tatic
p
r
ess
u
r
e
h
as
d
ec
r
ea
s
ed
b
y
an
a
v
er
ag
e
o
f
0
.
1
6
k
Pa
ev
er
y
tim
e
th
e
s
m
eltin
g
p
r
o
ce
s
s
s
to
p
s
.
T
h
is
is
b
ec
au
s
e
th
e
am
o
u
n
t
o
f
d
u
s
t
an
d
g
as
p
r
o
d
u
ce
d
is
r
ed
u
ce
d
,
an
d
th
er
e
is
a
p
u
ls
e
je
t
clea
n
in
g
o
p
er
atio
n
o
n
th
e
b
a
g
f
ilter
ev
er
y
tim
e
th
e
s
m
eltin
g
p
r
o
ce
s
s
s
to
p
s
,
as
p
r
ev
io
u
s
ly
co
n
d
u
cted
r
esear
ch
[
3
0
]
.
I
t
ca
n
also
b
e
s
ee
n
th
at
th
e
air
f
lo
w
ten
d
s
to
in
cr
ea
s
e
at
an
av
er
ag
e
r
ate
o
f
4
2
7
,
7
7
1
m
³/h
w
h
en
th
e
s
m
e
ltin
g
p
r
o
ce
s
s
s
to
p
s
b
ec
au
s
e
th
e
s
tatic
p
r
ess
u
r
e
d
ec
r
ea
s
es
,
w
h
er
ea
s
wh
en
s
tatic
p
r
ess
u
r
e
co
n
d
itio
n
s
ar
e
r
ed
u
ce
d
,
air
f
lo
w
r
eq
u
ir
em
e
n
ts
s
h
o
u
ld
also
b
e
r
ed
u
ce
d
b
ec
au
s
e
th
er
e
is
n
o
d
u
s
t
an
d
g
as
g
e
n
er
ated
wh
e
n
t
h
e
s
m
eltin
g
p
r
o
ce
s
s
s
to
p
s
.
T
h
e
d
esire
d
co
n
d
itio
n
is
th
at
th
e
ai
r
f
lo
w
r
ate
d
ec
r
ea
s
es
wh
en
th
e
s
tatic
p
r
ess
u
r
e
v
alu
e
d
ec
r
ea
s
es
,
b
ec
au
s
e
th
e
am
o
u
n
t
o
f
d
u
s
t
an
d
g
as
d
e
cr
ea
s
es
as
th
e
s
m
eltin
g
p
r
o
ce
s
s
s
to
p
s
,
s
o
th
at
th
e
p
o
wer
c
o
n
s
u
m
p
tio
n
o
f
th
e
f
an
m
o
to
r
ca
n
b
e
r
e
d
u
ce
d
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8
6
9
4
I
n
t J Po
w
E
lec
&
Dr
i Sy
s
t
,
Vo
l.
16
,
No
.
2
,
J
u
n
e
20
25
:
1
3
9
9
-
1408
1404
T
ab
le
5
.
M
ea
s
u
r
em
e
n
t r
esu
lts
o
f
ea
ch
s
m
eltin
g
c
y
cle
o
n
th
e
d
u
s
t
c
o
llecto
r
f
an
m
o
to
r
af
ter
i
n
s
tallin
g
th
e
VFD
C
y
c
l
e
S
mel
t
i
n
g
p
r
o
c
e
ss
S
t
a
t
i
c
p
r
e
ss
u
r
e
(
k
P
a
)
A
i
r
f
l
o
w
r
a
t
e
(
m³
/
h
)
P
o
w
e
r
(
k
W
)
S
p
e
e
d
(
r
p
m)
C
y
c
l
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1
On
1
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53
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7
8
3
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1
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1
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CO
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SI
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N
T
h
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tu
d
y
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p
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f
d
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s
t
co
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f
an
m
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to
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s
in
a
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p
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with
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with
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Me
asu
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ts
h
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d
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cted
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air
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.
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r
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en
ts
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also
tak
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to
s
ee
th
e
p
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wer
q
u
ality
as
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f
ec
t
o
f
th
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s
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th
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n
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e
f
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t
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.
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ai
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f
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r
th
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s
p
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d
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f
3
2
2
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6
m
³/h
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d
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3
8
4
,
1
9
3
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at
th
e
s
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o
f
8
7
9
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g
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s
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to
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f
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r
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y
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r
b
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r
e
th
e
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s
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o
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4
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4
0
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h
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r
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ile
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ter
th
e
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s
talled
,
th
e
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g
y
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n
s
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m
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tio
n
was
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4
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1
6
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r
.
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e
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n
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n
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s
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th
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s
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es 1
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2
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3
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1
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.
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