A thermodynamic power cycle receives energy by heat transfer from an incompressible body of mass m and specific heat c initially at temperature TH. The cycle discharges energy by heat transfer to another incompressible body of mass m and specific heat c initially at a lower temperature TC. There are no other heat transfers. Work is developed by the cycle until the temperature of each of the two bodies is the same. Develop an expression for the maximum theoretical amount of work that can be developed, Wmax, in terms of m, c, TH, and TC