McQuay MWM09J Manual page 32

MWM-J_(ii)
(b) Indoor Condition: 25°C DB, 17°C WB
Outdoor Condition: 40°C DB
Indoor DB˚C Indoor WB˚C
16
17
18
Total capacity, TC
Interpolation Method:
17º C – 16º C

=
19º C – 16º C

x = 10.79kW
6
Sensible capacity, SHC
Interpolation Method:
17º C – 16º C

=
19º C – 16º C

y = 10.05kW
5
3 Step:
rd
To obtain the Total capacity and Sensible capacity for
(a) Indoor Condition: 25°C DB, 17°C WB
Outdoor Condition: 37°C DB
Indoor Indoor
DB˚C WB˚C
23 15
Total capacity, TC
Interpolation Method:
37º C – 35º C

=
40º C – 35º C

x = 11.01kW
Sensible capacity, SHC
Interpolation Method:
37º C – 35º C

=
40º C – 35º C

y = 9.99kW
25
...........................................
x – 10.50kW
6
11.36kW – 10.50kW
y – 10.37kW
6
9.03kW – 10.37kW
TC
(kW)
11.16 10.05
......................
x – 11.16kW
10.79kW – 11.16kW
y – 10.05kW
9.92kW – 10.05kW
Outdoor DB, ˚C
TC (kW)
10.50
x
6
11.36
Power Input, PI
Interpolation Method:
17º C – 16º C

19º C – 16º C

z = 4.39kW
6
Outdoor DB, ˚C
35
SHC PI TC SHC
(kW) (kW) (kW) (kW)
4.03 x
Power Input, PI
Interpolation Method:
37º C – 35º C

40º C – 35º C

z = 4.17kW
Performance Data
40
SHC (kW) PI (kW)
10.37
y
6
9.03
z – 4.37kW
6
=
4.43kW – 4.37kW
37 40
PI TC SHC
(kW) (kW) (kW)
y z 10.79 9.92
z – 4.03kW
=
4.39kW – 4.03kW
4.37
z
6
4.43
PI
(kW)
4.39
30