In a spiral heat exchanger, each fluid flows through a single channel. If suspended solids settle on the heat transfer surface, the increased fluid velocity creates a scrubbing effect that removes the deposits. At the same time, the cold fluid enters at the periphery and spirals inward, exiting at the center.
How does heat exchanger operate?
Heat exchangers, metal shells and tubes, work by transferring heat from one place to another. The hot flue gas heats the metal as the gas makes its way to the exhaust outlet of the furnace. As this is happening, the hot metal heats the air circulating over the exterior of the heat exchanger.
Can you clean a plate heat exchanger?
To clean your plate heat exchanger, first drain both sides and isolate it from your system fluid (generally done with isolation valves). Then, flush water through both sides until it runs clear. After running the cleaning agent through your PHE, flush it with water again until both sides discharge clear.
What is a spiral heat exchanger?
Alfa Laval spiral heat exchangers are designed to handle the toughest heat transfer challenges. Whether it’s frequent fouling from dirty media, or limitations from pressure drop and floor space, they are the ultimate problem solver for liquid-to-liquid and two-phase duties.
Why choose Alfa Laval welded heat exchangers?
Alfa Laval welded heat exchangers maximize energy efficiency and heat recovery, with innovations that deliver exceptional thermal performance and reliability, for a wide range of duties. But it’s more than technology.
Why choose Alfa Laval spirals?
When tubes start to foul, pressure drop increases pushing the fluid to find alternative flow paths. The result is that fouling and clogging of the tubes happens very quickly. With Alfa Laval spirals, on the other hand, fouling and clogging is virtually eliminated.
How do selfclean™ heat exchangers work?
Alfa Laval’s SelfClean™ construction makes SpiralPro model heat exchangers a smart choice when working with dirty fluids, sludges, emulsions, slurries, fibres or particle loaded liquids. Since the fluids flow continuously in one single channel, the fluid force acts against any deposits, “pushing” them through the channel and out the other end.
