Water at $68$ deg F is flowing at a rate of $25$ gal$/$min through a pipe that is made of $1-$inch sched$40$ pipe. Fully open gate valve is used to control the flow of fluid $.$ The second pipe that is made up of $2-$inch sched $40$ pipe is connected by an elbow. The second pipe is followed by a third pipe made of $1/2-$inch sched $40$ steel pipe. Compute for the total friction loss in all of the pipes $($BTU$/$lbm$)$