A Carnot heat engine operates between a source at 1000 K and a sink at 300 K. If the heat engine is supplied with heat at a rate of 800 kJ/min, determine (a) the thermal efficiency and (b) the power output of this heat engine.

Problem 5:   Suppose a Carnot engine has an efficiency of 45 % and a cold reservoir temperature of 28.5°C. Part (a)  What is the hot reservoir temperature, in degrees Celsius, of this Carnot engine?  Part (b)  What must the hot reservoir temperature be, in degrees Celsius, for a real heat engine that has an efficiency of 45, which is 70% of the maximum efficiency? Assume it has the same cold reservoir, at 28.5°C.

A Carnot engine is operated between two heat reservoirs attemperatures of 520 K and 300 K. If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it discard to the reservoir at 300 K?

Steam locomotives have an efficiency of 15.0% and operate with a hot steam temperature of 425°C. (a) What would the cold reservoir temperature (in °C) be if this were a Carnot engine? °C (b) What would the maximum efficiency of this steam engine be if its cold reservoir temperature were 150°C? %