Which of the following is the best design choice? Assume the budget is $120 and that weight includes the payload. a
Tmax = 11.0 N, W = 8.0 N, Cost = $95
b
Tmax = 12.0 N, W = 8.0 N, Cost = $105
c
Tmax = 16.0 N, W = 8.0 N, Cost = $112
d
Tmax = 18.0 N, W = 8.2 N, Cost = $125

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater