熱泵組合性多效蒸發可節省蒸汽用量，但隨著效用數增加設備成本也會大幅增加。熱泵或蒸汽再壓縮(MVR)組合型多 效蒸發系統即可降低設備成本又可做到完全不用蒸汽，具有取長補短的作用。熱泵或蒸汽再壓縮的原理就 是將單效蒸發或多效蒸發過程中蒸汽被冷卻水冷凝的熱量利用起來用于廢液的再蒸發,因此理論上沒有熱 量的損失，可不需要外部供熱。但實際上壓縮機的功力不可能100%轉化成熱能(被蒸發液的熵),所以存在 效能系數(COP)。效能系數取決于多個因數，MVR的效能系數大致在下表所示的范圍之內。我們可根據客 戶 的實際情況和要求設計合理、省能的熱泵組合性多效蒸發濃縮系統。
The combined multi-effect evaporation of heat pumps can save steam consumption, but the cost of equipment will also increase significantly as the number of utilities increases. The heat pump or vapor recompression (MVR) combined multi-effect evaporation system can reduce equipment costs and eliminate the need for steam at all, which has the effect of complementing each other. The principle of heat pump or steam recompression is to use the heat of the steam condensed by cooling water in the single-effect evaporation or multi-effect evaporation process to re-evaporate the waste liquid. Therefore, there is no heat loss in theory and no external heating is required. But in fact, the compressor's power cannot be 100% converted into heat energy (entropy of the evaporated liquid), so there is a coefficient of efficiency (COP). The performance coefficient depends on a number of factors, and the performance coefficient of MVR is roughly within the range shown in the table below. We can design a reasonable and energy-saving heat pump combined multi-effect evaporation concentration system according to the actual situation and requirements of customers.