The spiral plate heat exchanger is made from two long metal plates around a core to form two concentric spiral flow passages, one for each fluid.
The plate edges are welded one side for each fluid. Channel plate width and spacing are optimized for the specified duty, maximum heat transfer, and ease of access.
The plate gap is maintained by piece which are called distance piece. Also we have an option model which do not require them.
Related to these structure KUROSE spiral heat exchanger has unique advantages over other types of heat exchangers like the shell and tube.
・Strong on customized solutions
・Low maintenance cost due to easy access
・High heat transfer efficiency, higher than in shell & tubes
・Design experience from more than 50 years of manufacturing
Type 1 has two concentric spiral channels, one for each fluid.
The spiral channels provide optimum heat transfer and flow conditions for a wide variety of fluids, while keeping the overall size to a minimum.
Type 2 be used as a condenser under deep vacuum conditions, reboiler, gas cooler and heater.
Vapor in cross flow and cooling medium in spiral flow. This flow direction
can achieve extremely low vapor side pressure drop.
And large flow cross-section can accept large vapor volumes.
Also, short height of cross flow section is suitable in liquid to liquid duty with large flow imbalance.
The fully countercurrent system(KSH-1) is able to exchange heat even if temperature difference is extremely close.
Spiral is very good at using with fluids that tend to cause fouling. Single channel geometry reduce the fouling, and it called “self-cleaning”
Self-cleaning means that when fouling occur in spiral channel, taking it away from. Because the entire flow have to pass through fouling section.
It means that velocity of fouling-section increase. So scrubbing effect will happen.
Spiral flow passage easily creates turbulent flow.
Optimum flow speed can be gained by selecting the most suitable spiral channel.
High Overall Heat Transfer Coefficient can be achieved.
Generally, when install the spiral type, to cut down maintenance cost.
Compare that with any other heat exchanger* This example is only for reference. It is not the actual data.
SHE equipment volume is far compact comparing to Tubeler Heat Exchanger.
Plant space can be saved and plant initial cost can be saved.