A method, including: flowing a fluid stream including one or more freezable components over a cooled surface, wherein the cooled surface has a cooled surface temperature below a freezing temperature where at least one of the freezable components solidifies out of the fluid stream as a frozen deposit on the cooled surface; separating the frozen deposit from the cooled surface by mechanically deforming at least part of the cooled surface; and heating the frozen deposit separated from the cooled surface to melt, vaporize, or sublimate the frozen deposit.

The invention relates to a method for cleaning a plate heat exchanger, in which method the plate pack (2) of the plate heat exchanger is removed from the outer casing, the plate pack (2) is stretched in its longitudinal direction so that the spaces between the plates of the plate pack increase, and then the plate spaces of the plate pack are cleaned.

A flow conduit intended for use in a fouling environment includes at least one solid surface of a thermally adaptive material. The at least one solid surface is configured to undergo a shape change as a result of thermal cycling such the shape change dislodges unwanted material accumulated on the at least one solid surface during operation of the flow conduit in the fouling environment.

A method for exchanging heat between a heat exchange fluid and a perishable product fluid. The method comprises providing the heat exchange fluid to an enclosure 5 of a heat exchanger and providing the perishable product fluid to a tube 53 comprising a flexible portion in the enclosure 51. The method comprises exchanging heat between the heat exchange fluid in the enclosure and the perishable product fluid in the tube 53 and interrupting providing the perishable product fluid to the tube 53. The method further comprises compressing the flexible portion of the tube 53 to decrease a volume of the tube 3 and to press a substantial part of the perishable product fluid out of the tube 53. The method may comprise changing the heat exchange fluid at a first temperature to a heat exchange fluid at a second temperature different than the first temperature.

A method for exchanging heat between a heat exchange fluid and a perishable product fluid. The method comprises providing the heat exchange fluid to an enclosure 5 of a heat exchanger and providing the perishable product fluid to a tube 53 comprising a flexible portion in the enclosure 51. The method comprises exchanging heat between the heat exchange fluid in the enclosure and the perishable product fluid in the tube 53 and interrupting providing the perishable product fluid to the tube 53. The method further comprises compressing the flexible portion of the tube 53 to decrease a volume of the tube 3 and to press a substantial part of the perishable product fluid out of the tube 53. The method may comprise changing the heat exchange fluid at a first temperature to a heat exchange fluid at a second temperature different than the first temperature.

A method for exchanging heat between a heat exchange fluid and a perishable product fluid. The method includes providing the heat exchange fluid to an enclosure 5 of a heat exchanger and provides the perishable product fluid to a tube 53 including a flexible portion in the enclosure 51. The method includes exchanging heat between the heat exchange fluid in the enclosure and the perishable product fluid in the tube 53 and interrupting providing the perishable product fluid to the tube 53. The method further includes compressing the flexible portion of the tube 53 to decrease a volume of the tube 3 and to press a substantial part of the perishable product fluid out of the tube 53. The method may include changing the heat exchange fluid at a first temperature to a heat exchange fluid at a second temperature different than the first temperature.

A method for exchanging heat between a heat exchange fluid and a perishable product fluid. The method includes providing the heat exchange fluid to an enclosure 5 of a heat exchanger and provides the perishable product fluid to a tube 53 including a flexible portion in the enclosure 51. The method includes exchanging heat between the heat exchange fluid in the enclosure and the perishable product fluid in the tube 53 and interrupting providing the perishable product fluid to the tube 53. The method further includes compressing the flexible portion of the tube 53 to decrease a volume of the tube 3 and to press a substantial part of the perishable product fluid out of the tube 53. The method may include changing the heat exchange fluid at a first temperature to a heat exchange fluid at a second temperature different than the first temperature.

To provide a solution conveying and cooling apparatus that enables removal of a deposit of solid material, or a fouling deposit, inside the apparatus with extremely simple work equipment by fewer on-site workers in a short tune without any dangerous work such as hydroblasting. The solution conveying and cooling apparatus has a rigid outer tube for a cooling medium and a plurality of rigid outer tubes for solution arranged parallel to each other inside the rigid outer tube for a cooling medium. A thin inner tube is disposed inside each of the rigid outer tubes for solution, this thin inner tube having an outer diameter smaller than an inner diameter of the rigid outer tube for solution at normal temperature and pressure, and expanding by an increase in at least one of temperature and pressure of a solution conveyed and as a result contacting with an inner surface of the rigid outer tube for solution that is cooled by the cooling medium.

A flow conduit intended for use in a fouling environment includes at least one solid surface of a thermally adaptive material. The at least one solid surface is configured to undergo a shape change as a result of thermal cycling such the shape change dislodges unwanted material accumulated on the at least one solid surface during operation of the flow conduit in the fouling environment.