lämmönjakotukki

lämmönjakotukki is a Finnish term that translates to “heat‑exchange jacket” in English. It is a device used to transfer thermal energy between a fluid and its surrounding environment. The jacket is typically a hollow metal or composite sleeve fitted around a pipe, heat‑exchanger tube, or other equipment. Fluid inside the jacket (often water, coolant, or steam) flows through the inner channel, while a second fluid flows in the outer annular space. Heat from one fluid is conducted through the wall of the jacket and transferred to the other, enabling efficient heating or cooling in industrial, HVAC, and process applications.

Common materials for the jacket wall include stainless steel, aluminum, copper, and thermally conductive polymers. The selection depends on temperature range, corrosion resistance, and cost. The design involves considerations of temperature differential, pressure drop, and flow rates. In many heating systems, the jacket is fed with hot water or steam from a boiler, while the inner pipe circulates cooler process fluid. The reverse configuration is used in cooling systems, where the jacket delivers chilled water to extract heat from the product.

lämmönjakotukit are employed in distillation columns, reactors, condensers, and refrigeration units. They enable compact, modular installation and ease maintenance, as the outer fluid can be serviced without disrupting the inner process. Energy efficiency is a key advantage: by maximizing heat transfer area, the jacket reduces the amount of energy required to achieve the same temperature change. Maintenance typically involves checking for leaks, fouling, and ensuring the thermal contact remains effective.

Because the jacket can be installed on existing equipment, it is frequently used for retrofit upgrades in older plants. Its versatility in material choice and sizing allows it to be adapted to a wide range of pressures (from vacuum to several bar) and temperature ranges (from cryogenic to several hundred degrees Celsius). Overall, the lämmönjakotukki remains an essential component in modern thermal process and building heating solutions.