answer what u can neatly plz

htp

.2) A double-pipe heat exchanger consists of five hairpins connected in series. The hairpins are each 20ft long with 4 -in. schedule 40 outer pipes, 2-in. schedule 40 inner pipes and internal return bends. Nozzles are made of 2-in. schedule 40 pipe. 40,000lb/h of a petroleum fraction having the properties given below will flow in the annulus. (a) Calculate the heat-transfer coefficient, h0, for the annulus. (b) Calculate the total pressure drop, Po, for the annulus. (c) What percentage of the total pressure loss occurs in the nozzles? (d) If schedule 40 pipe is used, what size nozzles would be required to keep the pressure drop below 7 psi? Ans. (a) 179Btu/hft2F. (b) 8.9 psi. (c) 41%. (d) 3-in. nozzles