Example 2.14 Water at 90°C is pumped from a storage tank at a rate of 3 Ls1. The motor for the pump supplies work at a rate of 1.5 kJs"!. The water goes through a heat exchanger, giving up heat at a rate of 670 kJ-s-1, and is delivered to a second storage tank at an elevation 15 m above the first tank. What is the temperature of the water delivered to the second tank?

800 kW of heat is added to a heat exchanger with 16 mol/s ethylene flowing through. The fluid enters started at 200°C. What is the final temperature, if the pressure is held at 1 bar?

An ideal Rankine cycle operates with the following design: 100 kg/s of steam enters the turbine at 30 bar and 500°C and is condensed at 0.1 bar. Determine the power produced and the efficiency of the cycle.

A Brayton-refrigeration cycle with a regenerative heat exchanger operates with a compressor and turbine at 86% efficiency. The compressor receives air at 480°R, 14.7 psi which is compressed to 40 psi. Compressed air enters the regenerative heat exchanger at 540°R and cools down to 480°R before entering the turbine. If the refrigeration capacity is 15 tons, calculate: the volume flow rate entering the compressor. the coefficient of performance. the carnot coefficient of performance