5. water enters a 2.5 cm internal diameter thin copper tube of a heat exchanger at 30C at a rate of 0.3kg/s ans is heated by steam condensing outside at 120 c. if the average heat transfer coefficient is 800 w/m2k, determine the length of the tube required in order to heat the water to 100C

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

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.