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(d) In a closed industrial process 2 .5 kg of water at an initial temperature of...

(d) In a closed industrial process 2 .5 kg of water at an initial temperature of 15°C is continually stirred whilst being heated. If the net heat transferred to the system is 3 kJ and the final temperature of the water is 75°C, determine:

i.The internal energy change of the water

ii.The work transferred (stating the direction-in or out)of the mechanical stirrer.

iii.The additional heat flow required for the same temperature increase if there were no work transfer.

For parts (d), assume no heat loss and take: C=4.19kJ/kgK, L=2260kJ/kg for water)

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