WOODWARD TECJET 50 GAS CONTROL VALVE OPERATION AND CALIBRATI Caterpillar

The following graphs are based on the density of the gas at 0.82 kg/m^3.

Please use the following equations to modify the graphs to your requirements:

Using the example of landfill gas (60% CH₄ and 40% CO²)

Density = 1.221 kg/nm³

Gas temperature = 50 °C (max. = 65 °C)

Gas flow = 450 nm³/h

To correct the density and/or temperature:

Density = 1.221 * (273/(273+Tgas)) = 1.03 nm³/h

Flow = 450 * 1.221/1.03 = 532 nm³/h

Flow (at 0.82) = 532 * SQR(1.03/0.82) = 596 nm³/h

Maximum differential pressure (DP): 40 kPa

Minimum differential pressure: 3 kPa

Maximum absolute gas pressure (AP): 250 kPa

Figure 5-1. Flow Capacity for the TecJet 50, Version 1

Figure 5-2. Flow Capacity for the TecJet 50, Version 2

Figure 5-3. Flow Capacity for the TecJet 50, Version 3