Maximum heat recovery with counter-current flow
Alfa Laval SHE Type 1 is a good choice when one, or both, fluids are fouling, due to its self-cleaning effect. Since the fluid flows continuously in one single channel the force of the fluid acts against any deposits, “pushing” them through the channel and out the other end. In a few cases Alfa Laval SHE Type 1 can be used as a condenser, for example when the cooling media is heavily fouling, or very close temperature approach is required (since the counter-current configuration is thermally the most efficient).
The compact nature of the Alfa Laval SHE Type 1 spiral often allows several large shell-and-tubes units to be replaced by one single SHE, giving considerable infrastructure benefits in addition to the reduction in maintenance and cleaning activities. If, or when, the SHE needs cleaning, the covers can easily be removed and the SHE cleaned using a hydrojet.
- Fouling liquids: containing solids, fibres, liquors, slurries and sludges
- Liquid/liquid: preheating, heating, cooling, interchanging and heat recovery