FALLING FILMEVAPORATION SYSTEMS

Home / Evaporation duty calculator & project brief

Evaporation duty calculator & project brief

Calculate a transparent mass balance and carry it directly into a secure project enquiry.

MASS BALANCE / STEADY STATE

No density conversion: enter kg/h, never L/h. Assumes conserved non-volatile solids, no additions, losses, reaction or accumulation. Brix is an approximation for real food mixtures. This is not thermal sizing or a rated equipment capacity.

Example: 1,000 kg/h at 12% to 60% gives 200 kg/h concentrate and 800 kg/h evaporated water.

Read the result correctly

The calculation separates three mass-flow rates. It does not determine heating area, utility consumption, minimum wetting or suitability. State property and utility data in the enquiry so those checks can follow.

Assumptions & worked example → Discuss this duty

Will your liquid maintain a falling film?

Step 1: enter a conserved-solids mass balance. Step 2: compare measured properties with an explicitly chosen screening envelope. Step 3: price a proposed energy configuration.

Editable examples, not equipment ratings. The 100 cP and 1% defaults are screening assumptions, not universal suitability limits. Steam economy 2.5 and electricity 8 are illustrative inputs; replace with a verified proposal. TVR requires motive-steam conditions; MVR requires vapour lift and compressor data. Temperature-budget inputs are editable screening assumptions. The displayed effect count only compares your entered thermal budget; it is not an engineering selection or an approved rating.

Result appears here. No information is submitted.

P = F × xin / xout; V = F − P; steam = V / economy. Utility cost per tonne of water = steam price / economy + electricity price × specific power. Assumes steady state, conserved non-volatile solids and no additions, entrainment or reactions. Excludes feed heating, cooling water, chemicals, labour, downtime and capital. Brix requires a validated solids approximation.