You have the full 1 hour and 20 minutes to complete this exam. Sensible heat means heat additions to or subtractions from a substance that your senses will tell you has occurred by virtue of a temperature change. Latent heat is heat that is added to a substance that doesn t change the temperature of the substance. The best example of latent heat is the heat we add to water at 212 F in order to change it to steam at 212 F. 6. Work is the product of force times the distance over which it is applied in the direction of the force.
Power is the time rate of doing work.
The faster you want the work done, the more power you need. The units of power we will find most convenient are foot- pounds per second. By the general construction features of the apparatus 10. The heat generated by the burning fuel is less capable of heating the water to generate sufficient steam - less than steam demand. I have a fuel oil cooler on my ship.