In evaporators with MVR, the heating medium in the first effect is vapor developed in the same effect, compressed to a higher temperature by means of a fan or blower (MVR).

Energy Consumption

Since prices for steam and electricity vary by region, the choice between MVR and TVR (and in the case of TVR, the number of stages) depends on local prices, possible utilization of hot condensate, and depreciation of the capital cost. Generally a TVR has lower CAPEX but higher OPEX, whereas an MVR has higher CAPEX but lower OPEX which makes it attractive. Both systems produce the same product quality as long as certain critical design parameter requirements are met.

Features