(b) A heat storage system developed on part of the lime cycle, based on the exothermic reaction of lime (Cao) with water

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B A Heat Storage System Developed On Part Of The Lime Cycle Based On The Exothermic Reaction Of Lime Cao With Water 1 (37.08 KiB) Viewed 10 times

(b) A heat storage system developed on part of the lime cycle, based on the exothermic reaction of lime (Cao) with water to produce slaked lime (Ca(OH)2), and the corresponding endothermic dissociation of slaked lime to re-form lime is developed. In this system, the volatile product is steam, which is condensed and stored. Assuming that the slaked lime powder is 40% of its bulk density, and that the heat evolved by condensing steam is wasted, calculate the heat storage capacity in kWh per cubic metre of Ca(OH)2. DATA: Ca(OH)2(s) CaO(s) + H20(9) AH,' = 109 kJ/mol H2O() H2O(g) AH, = 44 kJ/mol Bulk density of Ca(OH)2 = 2240 kg/m