A heat exchanger in your plant has long been used to heat acetylene (flow rate 5500 standard liters per minute) from 65 C to 150 C. The utility stream for this heat exchanger is steam at 20.0 bar absolute pressure; the steam enters as a saturated vapor and leaves as a saturated liquid. Your team is developing a new process, and this same heat exchanger will be used to heat isobutene (flow rate 5500 standard liters per minute) from 65C to 150 C.