Isobar® Heat Pipes (sometimes called heat tubes) are super-thermal conductors that have the capacity to transfer large amounts of energy at high speeds in both heating and cooling applications. Isobar® Heat Pipes use two-phase heat transfer technology that are able to move thermal energy up to 250+ times faster than standard copper material.
Acrolab’s standard Isobar heat pipes come in a variety of diameters and sizes. Standard straight Isobars are used in heating, cooling, and isothermal applications. Acrolab can assist you with the design and size of Isobar that is right for your application.
Acrolab’s Baffle Isobar heat pipes are best used in applications where water blockage and pressure drops occur in difficult to reach areas. These Baffle Isobars can replace your current standard baffles with minimal if any modification(s) to tooling.
Acrolab’s Stepped Isobar® heat pipes allow for maximum surface area contact utilizing a multi-diameter design.They are typically used in core pins to delivery optimal cooling where a typical water channel cannot.
Acrolab’s Hollow Isobar® heat pipes have a through-hole down the center for multiple functions. They are typically applied in blow molding applications or around a nozzle or component where heating or cooling can be applied from remote location(s) if required.
Core pins can sometimes be the bottle neck for a tool cycle time. Acrolab manufactures Core Pin Isobar® heat pipes that allow the core pin the capability of cooling at very high speeds. By incorporating a cooling tail, the core pin has the ability to cool and/or heat the entire core pin quickly and uniformly. Acrolab can supply and install to suit your requirements.
Acrolab manufactures custom Isobar® heat pipes of all shapes and sizes. We can assist your team with designing Isobar heat pipes for applications ranging from plastics, to agricultural, to extreme temperature conditions. Designs can range from circular, to finned, to multi-geometry with bends. Our application engineers can work with your team to develop an Isobar heat pipe that will work best for your application.
The Isobar® Heat Pipe achieves thermal conductivity by incorporating a sophisticated solid-state passive pump inside a contained copper unit. This pump takes the form of a fine metallic wick placed tight to the inner wall of a sealed Isobar.
In a Isobar® heat pipe, a small quantity of working fluid is placed in an evacuated tube. Heat is applied to the base of the tube, causing the temperature of the working fluid to rise — as this fluid heats, it vaporizes. This vapor then migrates to the colder end of the tube where it condenses and is absorbed by the wick. This wick, through its capillary action, returns the working fluid to the evaporator section, regardless of orientation.
Isobar® Heat Pipe technology works equally well with process tooling drawing their energy from heated platens and with integrally heated molds. Energy sources such as oil, steam, or electric heaters may be used. Since the latent heat transfer of evaporation is large, considerable quantities of energy can be transferred and significantly increase the thermal recovery rate under isothermal conditions.
Commonly used Isobars are: straight, baffled, finned, and stepped. For these types of Isobars, temperatures can range from 50°F to 500°F. Acrolab also engineers low temperature Isobars that operate at temperatures from -103°F to 50°F. These special Isobars are application dependent and are available upon request.
Acrolab application engineers have a vast knowledge of thermal dynamics and heat pipe design and integration.
We will consider maintenance,value-add, design, integration, performance, feasibility, and timing for client solutions.
Our “outside the box” style of thinking allows Acrolab to deliver unique and even multiple solutions for client requirements.
Acrolab Isobars are a 3 in 1 solution. They can provide cooling, heating and/or thermal uniformity management in your application.