Ashell-and-tube heat exchanger with single shell and two passes tube (1-2) uses hot water on the tube side to heat oil on the shell side. there are 20 tube passes made of copper have inner and outer diameters of 20 and 24 mm and the length of the heat exchanger is 3 m. water enters each tube at a rate of 0.2 kg/s at 87 °c and leaves at (a) calculate the convective heat transfer coefficient of the tube inner side. (b) calculate the overall heat transfer coefficient based on the pipe outer area if the shell side convective coefficient is 875 w/(m^2k). (c) calculate the total heat exchange area available (d) calculate the total heat load of the heat exchanger (e) calculate lmtd if the value for f is 0.9

What is an example of a physical property?

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes.which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature.sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent