Corrugated-tube heat exchangers for viscous media
This company’s corrugated-tube heat exchangers (photo) are designed to be suitable in larger systems for the treatment of dirty water, effluent and even digestate from anaerobic digestion (AD) plants. For some types of viscous material, a corrugated tube provides sufficient turbulence to prevent the need for additional mechanical agitation, such as in a scraped-surface or screw-driven heat exchanger. Corrugation in the tubes creates turbulence, which prevents viscous materials sticking to the wall of the tube, where they can act as insulation and prevent efficient heat transfer. The turbulence also prevents materials in suspension from dropping out of the carrier fluid and having a similar effect. Corrugated tubes therefore have a higher heat-transfer rate than a smooth tube of the same length, meaning that heat exchangers using corrugated tubes can be made smaller. Booth 3849 — HRS Heat Exchangers Ltd., Watford, U.K.