An adiabatic heat exchanger uses saturated steam to heat water flowing at 60 kg/s from 40℃ to 90℃. The steam exits the heat exchanger at a rate of 5 kg/s as a liquid at atmospheric pressure. If the inlet
pressure is 200 kPa, calculate the:
a) Energy gained by the saturated water using enthalpies.
b) Enthalpy of the inlet steam and the steam quality

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.