Falling film evaporators, due to their high heat transfer coefficients, low energy loss, rather a low holdup time, and the ability to handle high capacities have broad applications in food industries. Thus, this kind of evaporator is being used in the production of temperature sensitive compounds such as syrups. In this study, through modelling of the falling film evaporator with the use of...

• 2D analysis of heat transfer in a laminar falling film evaporator. The sources irreversibilities were identified, located and quantified. local entropy generation varies with the operating design conditions. overall is impacted by one. thermal evaporation efficiencies also impact generation. An evaporative flowing gravity on vertical plate heated fluid studied to determine temperature, evapor...

In the present investigation, a nonlinear mathematical model is developed for the analysis of Septuple effect flat falling film evaporator (SEFFFE) system used for concentrating weak black liquor in a nearby paper mill. This model is capable of simulating process of evaporation considering variations in boiling point rise (), overall heat transfer coefficient (U), heat loss from evaporator (Ql...

The performance of a falling-film evaporator trial plant during the first year after installation at the CG Smith Sugar Illovo mill is described. Operating under conditions similar to those experienced in the mill's raw house first effectevaporator, the unit confirmed most of the reported characteristics of this type of plant and proved easy to operate. Problems experienced were associated most...

In this work, the performance of an innovative evaporator based on water falling film was investigated. The studied has been equipped with a recirculation system to maximise wetted surface. Tests have carried out in lab-scale adsorption unit connected test bench recently realised at Politecnico di Milano labs for evaluating heat transfer performances under realistic operating conditions. Severa...

Recently, the development of environmentally friendly refrigerants has emerged as a major issue in industry. Owing to high cost developing new refrigerants, falling-film evaporators are attracting increasing interest, given their reduced refrigerant usage compared with flooded evaporators. In falling–film evaporators, distributor at top evaporator uniformly delivers through multiple holes over ...

A dynamic model for the simulation of a new single-effect water/lithium bromide absorption chiller is developed. The chiller is driven by two distinct heat sources, includes a custom integrated falling film evaporator-absorber, uses mixed recirculation and is exclusively cooled by the ambient air. Heat and mass transfer in the evaporator-absorber and in the desorber are described according to a...