A protection device 1 for a heat exchanger, comprising a grid 10 with an upstream surface 11 and a downstream surface 12, both located on opposite sides of the grid 10, the grid 10 being attachable to the heat exchanger 40 with attachment means 11 so that the downstream surface 12 can face a side of the heat exchanger 40, wherein the protection device 1 further comprises a shock absorber 20 attached to the grid 10 so that the shock absorber 20 least partly protrudes from the downstream surface 12 of the grid 10.

Freeze-protection systems and techniques are identified, particularly for equipment of swimming pools and spas. Included within structures subject to receiving water subject to freezing are means for accommodating expanded volumes of the water as it freezes. In this manner, the expanded volumes are less likely to cause damage to the structures themselves.

A heat exchange tube and a heat exchanger are provided. A tube wall of the heat exchange tube includes a first wall and a second wall, a first segment of the first wall includes one of a first groove or a first protrusion, a second segment of the first wall includes one of a second groove or a second protrusion, a first segment of the second wall includes the other one of the first groove or the first protrusion, the first protrusion is arranged in the first groove, the second segment of the second wall includes the other one of the second groove or the second protrusion, and the second protrusion is arranged in the second groove. At least part of each of the first segment and the second segment of the first wall is arranged between the first segment and the second segment of the second wall.

The system and method for installing external corrosion guards of the present disclosure comprises a method of protecting tubing in tubular heat exchangers from external corrosion that includes the installation of protective collars or guards around the tube outer diameter at the tubsheet plate, anti-vibration baffle, and/or pass partition plate levels. The external corrosion guards can be installed using a ridge method, where a ridge sits on a plate level, using a mechanical expansion method, and using a mechanical rolling method.

A multilayered material system includes at least one of a liner sheet and a cellular core, and a multilayered composite joined to the at least one of a liner sheet and a cellular core. The multilayered composite includes hollow microspheres dispersed within a metallic matrix material.

The present disclosure relates to a device for reducing fouling in tubes of a heat exchanger and heat exchangers including such anti-fouling device(s). The anti-fouling device includes an elongated displacement body insertable in the heat exchanger tube to reduce the flow cross-sectional area in a portion of the tube. It further includes a mount connected to the elongated displacement body for attaching the device to an end of the heat exchanger tube. The mount is configured to hold the displacement body, when inserted into the tube, in a spaced relationship to the inner surface of the tube. The disclosed anti-fouling devices effectively reduces fouling in heat exchangers in a reliable manner over an extended period of time without requiring maintenance or external controls, can be provided at relatively low cost, is easily installable and can be retrofitted also to existing heat exchangers. It is particularly useful for mitigating fouling related issues in heat exchangers subjected to hot combustion or process gases such as those encountered in the production of carbon black, fumed silica or other particulate matter without contaminating the product recoverable from the process gas or having an adverse influence on the properties thereof.

In one instance, an isolator for a heating, ventilating, and cooling (HVAC) system is provided that is a formed plastic member that is disposed between dissimilar metals of the bottom of the condenser and a base pan that supports the condenser or between two dissimilar metals of another HVAC heat exchanger. The isolator separates the two dissimilar metals involved from each of those components and also provides gaps or apertures to drain any water that otherwise might become standing water that potentially causes oxidation or increased oxidation. Other aspects are disclosed.

A multilayered material system includes at least one of a liner sheet and a cellular core, and a multilayered composite joined to the at least one of a liner sheet and a cellular core. The multilayered composite includes hollow microspheres dispersed within a metallic matrix material.

Shell-and-tube equipment includes a tube bundle, an inlet tube-sheet, and an anti-erosion device including an outer tubular element and an inner tubular element. A first tubular end of the outer tubular element is connected the inlet tube-sheet, whereas a second free tubular end of the outer tubular element extends in an inlet channel. The inner tubular element is inserted into the outer tubular element, so as to substantially cover the entire internal surface of the outer tubular element, and into at least a portion of the corresponding tube to a point beyond the joint or the second side of the inlet tube-sheet whichever is further from the outer tubular element. The inner tubular element is joined to the outer tubular element by means of mechanical or hydraulic expansion of at least a first tubular portion of the inner tubular element against the internal surface of the outer tubular element.

The present invention relates to a heat exchanger for a motor vehicle, including a plurality of plates, the plates being stacked on top of one another along a stacking axis so as to form a bundle of plates, at least a first plate and at least a second plate which define a first circulation path configured for circulation of a first fluid, at least the second plate and at least a third plate which define a second circulation path configured for circulation of a second fluid, the bundle of plates having a first distribution chamber which supplies the first circulation path with first fluid, and a second distribution chamber which supplies the second circulation path with second fluid. The heat exchanger includes at least one purification device arranged in one of the distribution chambers.