Single versus multiple-effect evaporation on a common duty

Hold the product target constant

Use identical feed composition, feed temperature, final concentration, operating hours and product-quality acceptance. A lower evaporation duty is not an energy advantage if it produces a different concentrate. Keep feed heating and final cooling inside or outside both cases consistently.

Allocate the temperature budget

For each effect, record proposed pressure, boiling temperature, boiling-point elevation and usable temperature difference. Include the final-concentrate viscosity and the cooling-water condition that the vacuum system must tolerate. Extra effects cannot be assumed to fit an unchanged thermal budget.

Compare the operating day

Request start-up heat, normal and minimum-load utility rates, cleaning downtime and the basis of the guarantee. List area, footprint, access and control scope beside utility demand. The quote should separate measured evidence from a preliminary heat balance.

Modules and record to prepare

tube bundle · vacuum condenser

Download a blank operating and evidence record. It contains no measured project results.

Discuss the actual duty or return to the suitability matrix.