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Separate the heat-recovery decision from the hydraulic demand of the liquid circuit.
A multi-effect train reuses vapour heat across pressure levels. The number of effects must fit the temperature budget, product boiling-point elevation, heat-transfer performance and required concentration path. It is not an independent promise of economy.
TVR uses motive steam; MVR uses an electrically driven compressor or fan. These options can be evaluated with different effect arrangements. Define vapour condition, required pressure rise, start-up heat and residual condensation before comparing them.
The pump has its own flow, pressure rise and efficiency. Its shaft demand is additional to a thermal evaporator balance. Motor and drive losses, vacuum equipment and other auxiliaries belong in the plant electrical assessment.
Separate steady production from start-up, changeover, cleaning and maintenance. Apply site tariffs only after utility quantities are defined. Report the operating schedule and measurement boundary; this website makes no fixed savings guarantee.
Keep the loop moving. The circulation pump sets the flow through the heater. That flow is distinct from the incoming feed and from the mass of water evaporated. Selection must follow the concentrated liquid throughout the planned operating range, including start-up and restart after cooling.
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Support the operating pressure. The vacuum system works with the condenser and air-leakage boundary. It supports the pressure chosen for product temperature and heat transfer; it does not independently set product quality.
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Recover heat within a defined duty. Effect count describes the evaporation arrangement, while TVR and MVR describe vapour recompression. They can be evaluated together. The circulation pump remains an additional electrical load regardless of the heat-recovery choice.
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