Problem 21HP

Assume that the heat engine in Problem 5.34 has a high temperature of 1000 K and a low temperature of 400 K. What does the inequality of Clausius say about each of the four cases?

Problem 5.34

For each of the cases below, determine if the heat engine satisfies the first law (energy equation) and if it violates the second law.

a. ˙Q H = 6 kW, ˙QL = 4 kW, ˙W = 2 kW

b. ˙Q H = 6 kW, ˙QL = 0 kW, ˙W = 6 kW

c. ˙Q H = 6 kW, ˙QL = 2 kW, ˙W = 5 kW

d. ˙Q H = 6 kW, ˙QL = 6 kW, ˙W = 0 kW

Meteorology Day #8 9/19/16 Week 5 Lecture Notes Continued Elevation: temperature us warmer at ground level than at mountain peak Latitudinal Variation: Balance is seen around latitudes 38 degrees N and 38 degrees S Poles have negative net radiation Equator has positive net radiation Wind and ocean currents redistribute energy mainly through convection Air Temperature Data: Monthly Mean: avg. of daily me