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2. A 250-kW diesel engine has two waste heat sources; one engine colling via radiator heat and other, exhaust gas. The radiator heat is via a closed circuit liquid while the exhaust from the engine is in the form of flue gas. The radiator heat is exhausted using a fan while the flue gas is let out of to the atmosphere. The quantity of radiator heat is 30 kW at 90 C while the exhaust heat is 100 kW at 290 C. Please design a heat pump to utilise the heat to generate a chilled water at 5 C using a LiBr VAR (vapour absorption refrigeration) system. What COP we can get from such a system and hence equivalent cooling generation in terms of kW or TOR (tons of refrigeration).

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