McQuay MWM 007F, Manual

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P P Perf
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or
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T
T T Ta
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Interpolation and Extrapolation method can be used to get the total capacity, TC and sensible capacity, SC
at those temperatures which are not stated out in the table.
Example:
Model: MWM 010F / MLC 010C
Indoor Condition: 23°C DB, 15°C WB
Outdoor Condition: 37°C DB
Solution:
Overall
Based on the Performance table on Pg.(15),
1. Refer to the Indoor DB column,
- 23°C is located between 20°C and 24°C (Thus, Interpolation need to be applied)
2. Refer to the Indoor WB column,
- 15°C only available in the case of Indoor DB = 20°C. (Thus, Extrapolation between 16°C
WB and 17°C WB during 24°C indoor DB is required)
3. Refer to the Outdoor DB column,
- 37 °C is located between 35°C and 40°C. (Thus, Interpolation need to be applied)
Please follow the steps below in order to get the required capacity.
3
rd
Step
Interpolation of Outdoor DB
Find TC, SC for
(a) Indoor: 23°C DB, 15°C WB
Outdoor:
37°C DB
2
nd
Step
Interpolation of Indoor DB
Find TC, SC for
(a) Indoor:
23°C DB , 15°C WB
Outdoor: 35°C DB
(b) Indoor:
23°C DB , 15°C WB
Outdoor: 40°C DB
1
st
Step
Extrapolation of Indoor WB
Find TC, SC for
(a) Indoor: 24°C DB,
15°C WB
Outdoor: 35°C DB
(b) Indoor: 24°C DB,
15°C WB
Outdoor: 40°C DB
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