McQuay MWM Specifications download pdf (Page 15)

Step:

To obtain the Total capacity and Sensible capacity for

(a) Indoor Condition: 23°C DB, 15°C WB

Outdoor Condition: 35°C DB

Outdoor DB, °C

Indoor DB

°C

Indoor WB

°C

TC (kW) SC (kW)

20 15 2.506 1.363

23 15 x

24 15 2.506 1.931

Total capacity, TC

⇒

x = 2.506kW (Same as Total capacity at 20°C Indoor DB / 15°C Indoor WB & 35°C Outdoor WB)*

Sensible capacity, SC

Interpolation Method:

⇒

ykW931.1

1.363kWkW931.1

C23C24

C20C24

−

−°

−

°°

⇒

y = 1.789kW

(b) Indoor Condition: 23°C DB, 15°C WB

Outdoor Condition: 40°C DB

Outdoor DB, °C

Indoor DB

°C

Indoor WB

°C

TC (kW) SC (kW)

20 15 2.311 1.205

23 15 x

24 15 2.311 1.773

Total capacity, TC

⇒

x = 2.311kW (Same as Total capacity at 20°C Indoor DB / 15°C Indoor WB & 40°C Outdoor WB)*

Sensible capacity, SC

Interpolation Method:

⇒

4ykW773.1

1.205kWkW773.1

C23C24

C20C24

−

−°

−

°°

⇒

y = 1.631kW

* This is due to 2 different conditions with same WB temperature will have the same level of enthalpy. For

more details, please refer to psychrometrics chart

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McQuay MWM Specifications Page 15

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