Heating and Cooling systems
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Overview liquid heat transfer fluids and product families

Nothing is more important than the right concept in order to choose the optimal temperature control unit. First, you have to fix the temperature range for the required application. It is therefore necessary to know some details on the process and the process equipment you plan to use. Maximum and minimum heat transfer fluid temperatures need to be determined, not only the required process temperature range but also it is important to determine the ‘driving force’ temperature difference so that energy transfer rates can be calculated based on the available surface areas of the process equipment to be utilised. Often equipment surface areas are fixed and cannot be changed without modifications to expensive processequipment. The only effective possibility to increase energy transfer rates to a process is by increasing the driving force temperature difference. Next, you have to clarify the question on which heating or cooling utilities are used. Maybe you have an existing utility infrastructure that can be used for primary heating or cooling purposes via heat exchangers such as in a secondary temperature control unit or, if no site utilities are available, you may require a separate individual heat transfer unit with electric heating or a process-cooling unit with mechanical compressors. No matter what type of unit is chosen we will tailor your installation according to your wishes. It will belong to one of these modular families.


NEW - LAUDA Module-Configurator for Heating and Cooling systems - individual system planning online

Simply use the link to our new LAUDA Module-Configurator Heating- and Cooling systems for the planning of your first system. The individual modules can be individually adapted to meet your requirements. Tried-and-tested modules, which can be compiled especially for your application, offer you tailor-made solutions, hence simplifying planning.

Our contact form at the end of the module configurator sends us your individually-composed project for further enquiries. Please feel free to contact our experts should you have any questions pertaining to the modules. We will be glad to advise you.

Liquid heat transfer fluids

Liquid heat transfer fluids
In the first place, the available heat transfer fluids differ in their possible operating temperature ranges. High vapour pressures above 100 °C are often a disadvantage of the aqueous based heat transfer fluids. Cross contamination with products and materials of construction of the processing equipment itself are other considerations to be taken into account. Flammability, toxicity, price, lifetime, as well as local regulations, represent further selection criteria. Fluid selection can be a difficult decision and LAUDA will help you to make the right choice using their vast experience and testing facilities.

Product families

Heat transfer units

Heat transfer units use, depending on the required outflow temperature, either synthetic thermal oils or water as the heat transfer fluid. ITH systems are electrically heated and can then heat or cool the fluid to produce a controlled liquid flow with a highly accurate
temperature. LAUDA heating and cooling systems from the ITH family always consist of the electric heater module and a maximum of one additional heat exchanger module (cooler). In this combination it is possible to build systems with an extended working temperature range.

Process cooling units

Process cooling units are individual cooling units that control temperatures of different consumer circuits. They have single-stage refrigeration circuits or two-circuit cascade cooling systems and are water- or air-cooled. A unique feature of LAUDA chiller technology allows the combination of an additional electric heater or heat exchanger for running a large working temperature range. Depending on the application, different heat transfer fluids may be used.

Process cooling units DV

Process cooling units DV are a specialty for all kinds of applications and are supplied without heat transfer fluid circuits (i.e. as
in VOC condensers by direct cooling with the actual evaporating refrigerant and not via a heat transfer fluid).

KH (Kryoheater)

Kryoheaters are again individual systems but with an extreme temperature range and are the optimal link between future requirements for temperature control systems and the possibilities of the most modern heat transfer fluid techniques. They contain numerous LAUDA innovations: from single-stage compressors to two-circuit cascades and simultaneous control of the highest temperature ranges. Kryoheaters form the ideal solution for universal equipment.

Secondary circuit units

Secondary circuit units use primary thermal energy from available steam, central thermal fluid ringmains, cooling water and cooling brine networks. Temperature control is made possible via the automatic bleeding of the required energy from the respective primary source. The energy extraction and supply takes place via heat exchangers or through a direct connection into a central ringmain circuit in the case of heat transfer fluids.

KP (Kryopac)

Kryopac are special secondary circuit units. In order to obtain even higher purity in modern production processes, chemical reactions are now run at very low temperatures. Therefore, LAUDA have developed and patented the LN2-Kryopac for use in its module range. Here the cold of evaporating nitrogen is used and transferred on a liquid heat transfer medium. All further modules can be used together with the Kryopac.