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

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

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Chemical Engineering Plant Economics
Depreciation

Does figure in the calculation of income tax liability on cash flows from an investment
Is the unavoidable loss in the value of the plant, equipment and materials with lapse in time
Costs (on annual basis) are constant when the straight line method is used for its determination
All of these

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