Question

Draw a neat sketch of aqua-ammonia vapor absorption system. On this sketch:

1. Indicate thermodynamic state points with (1) at the inlet of pump.
2. Show the direction of the following energy transfers to various components:

e_A = energy transfer to absorber

e_p = energy transfer to pump

e_g = energy transfer generator

e_D = energy transfer to dephlegmator

e_c = energy transfer to condenser

e_e = energy transfer to evaporator

 (iii)  Mention for each of the energy transfers in (ii) above whether it is in the form of work or heat.

 (iv)   With heat sink temperature of 27⁰C, heat source temperature of 127⁰C and refrigeration temperature of –13⁰C, find max COP of the vapour absorption system and mention the assumptions made.