A Dilute Aqueous Solution Is to Be Concentrated in an Evaporator

question 18

Multiple Choice

A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because

• A)Total heat transfer area of all the effects is -less than that in a single effect evaporator system
• B)Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect
• C)Boiling point elevation in a single effect system is much higher than that in any effect in a multi-effect system
• D)Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system

---

Definitions:

Original Cost

The initial purchase price or cost of acquiring an asset before any depreciation, amortization, or impairment costs are deducted.

Fair Value

An estimate of the market value of an asset or liability, based on the current price at which it could be bought or sold in an open market.

Legal Life

The period in which an asset is legally allowed to be used for its intended purpose, or the duration of intellectual property protection under law.

Useful Life

The estimated period over which a fixed asset is expected to be usable by an organization.