A chemical plant rejects 2MW of waste heat at 350C and 4MW at 200C. Moreover the plant consumes 5MW of electrical energy. In the past, the waste heat was just dumped into the environment (20C), but now there is a plan to use it for power production to reduce the electricity bill. a. Determine the entropy generated by dumping the waste heat and the corresponding work loss. b. Estimate what percentage of the electric power consumed in the plant could be produced by a suitable system, when 20% of the maximum possible is lost to irreversibilities