In a boiler test \(1200 \mathrm{~kg}\) of coal is burnt in 24 hours. The mass of water evaporated is \(12,500 \mathrm{~kg}\). Steam pressure is \(7.6 \mathrm{bar}\). The feed water temperature was \(37^{\circ} \mathrm{C}\). Calorific value of coal is \(32 \mathrm{MJ} / \mathrm{kg}\). The steam is dry and saturated. Calculate

(a) equivalent evaporation from and at \(100^{\circ} \mathrm{C}\),

(b) boiler efficiency, and

(c) boiler power.