Chemical Engineering Plant Economics
'Lang factor' is defined as the ratio of the capital investment to the delivered cost of major equipments. The value of 'Lang factor' for fixed capital investment, for a solid-fluid processing chemical plant ranges from

6.2 to 6.4
4.2 to 4.4
2.5 to 2.7
1.2 to 1.4

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Chemical Engineering Plant Economics
In declining balance method of depreciation calculation, the

None of these
Value of the asset decreases linearly with time
Annual cost of depreciation is same every year
Annual depreciation is the fixed percentage of the property value at the beginning of the particular year

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