• # question_answer A water chiller with a capacity of 30 tons of refrigeration cools $20\,{{m}^{3}}/hr$ of water entering at $12{}^\circ C.$ what is the temperature of water leaving the chiller? A) $5{}^\circ C$                          B) $6{}^\circ C$C) $7{}^\circ C$                          D) $7.5{}^\circ C$

$Q=30\times 3.5167=105.5\,\,kW$  ${{m}_{w}}\times {{c}_{p}}\,({{t}_{i}}-{{t}_{v}})=Q$ $\frac{20\times 1000}{3600}\times 4.187\,(12-{{t}_{0}})=105.5$ ${{t}_{0}}=12-45=7.5{}^\circ C$