Regenerators
- Home
- Regenerators
Avoid wasting energy
Economically, recovering heat from a hot product stream and transferring it to an incoming cold stream makes sense. While there are numerous techniques for recovering heat from non-particulate fluids, those that contain particulates, such as pulpy juice from fruits and vegetables, present a challenge.
The Regenerator (or Triple Tube) efficiently re-uses heat by utilising two opposing fluid paths that are wider than those found in conventional annular or wide gap heat exchangers, thereby minimising blockages caused by difficult products.
Two O-ring seals are used to secure the tubes to the special headers. Between these two O-rings is an external weep detection port that enables the detection of a seal failure.
Heat Recovery
As the cost of energy continues to rise and our awareness of environmental issues grow, efficiency is one of the most frequently asked questions today. Economically, it makes sense to recover heat from hot product stream and transfer it to incoming cold stream. By recovering as much heat as possible in each scenario, we can significantly reduce energy consumption and associated steam consumption and costs.
The degree of heat recovery in a pasteuriser is product-dependent. We have achieved up to 93 percent efficiency with thin liquids such as water or milk by varying the design of the heat exchanger Hipex selects. The regeneration process is not limited to thin liquids; we can achieve up to 50% regeneration with more viscous liquids such as banana puree and even up to 85% with thick fruit purees. This capability of reusing heat significantly reduces energy consumption.
Waste heat sources are almost certain to exist in any building, whether it is an office or a factory. There comes a point at which recovering energy from these sources becomes economically viable.
- Boiler blowdown
- High temperature exhaust gas streams
- Hot liquid effluents
Although there are numerous methods for recovering heat from non-particulate fluids, it is generally the case that those containing particulates such as pulpy juice from fruits and vegetables, present a problem.
Hipex offers a variety of options for even the most demanding products that can help reduce a process’s overall energy consumption or provide useful heat for other purposes.
Direct heat regeneration is accomplished by running hot product directly against the incoming cool product stream; this allows us to use a single heat exchanger for both sides of the regeneration process, significantly reducing size and material consumption. The Triple Tube is a direct regenerator that efficiently re-uses heat transferred directly from one product stream to the other. By providing two opposing fluid paths that are larger than those found in conventional annular or wide gap heat exchangers, blockages caused by difficult products are minimised.
Tubes can be sized and formed in a variety of ways to tailor to the performance the specific product. Two O-ring seals are used to secure the tubes to the special headers. Between these two O-rings is an external weep detection port that enables the detection of a seal failure.
In critical applications where the incoming product must be kept separate from the outgoing stream, an indirect regeneration system can be used, in which an intermediate water loop separates the two product paths and two separate heat exchanger banks are used, one for each side of the regeneration process.
