A field TEG unit is required to produce a gas (molar mass of 22) that will not condense water at 40°F and 500 psia (4°C and 34 bara). Gas to the glycol unit is water saturated at 110°F (43°C) and 300...

A field TEG unit is required to produce a gas (molar mass of 22) that will not condense water at 40°F and 500 psia (4°C and 34 bara). Gas to the glycol unit is water saturated at 110°F (43°C) and 300 psia (21 bara) and the flow rate is 80 MMscfd (89 × 103 Nm3/h). a. Using a TEG rate of 3 gal/lbm (0.025m3/kg) of water removed, what will be the minimum glycol circulation rate in gpm (m3/h)? b. The TEG unit has a regeneration duty equal to the heat required to vaporize the removed water with an overall efficiency of 33%. Assume a TEG regeneration temperature of 400°F (204°C). Fuel costs are $5.00 per MMBtu ($4.75/GJ). Assume heat of vaporization for water is 1165 Btu/lb (2.707 kJ/g). Compute the daily heater fuel energy cost