Primary Cooling Circuits
The basic function of a primary (house) cooling circuit is to transfer heat from either a process, or secondary cooling loop. The primary coolant collects heat from the process and is then cooled, usually by air.
Water-to-water heat exchangers are commonly used with primary cooling circuits. In this configuration, the fluid being cooled flows through the heat exchanger, transferring heat into the secondary (process) fluid circuit. The primary circuit then carries the heat to a cooling source, where it is dissipated, and the fluid is cooled. The cooled fluid then returns to the heat exchanger to absorb more heat from the secondary circuit. Using a water-to-water heat exchanger helps to ensure that components receive fluid at the correct flow rate and temperature, making them more effective and reliable.
Kalrez® was the first high performance perfluoroelastomer designed for plasma, high temperature, and wet process applications, and was introduced in the 1970s. Many users think of Kalrez® in a similar way we have all come to think of “Kleenex®” – that is – as a generic product and just about any type of Kalrez® will be OK. However, there are now many versions (“compounds”) of Kalrez® based on the intended application, and the differences are substantial.
The table below is a great starting point,
If you are measuring the temperature of a static surface, whether or not its temperature is changing, all is good. But what happens when you are changing the surface and its emissivity is also changing? Your pyrometer inaccuracy can increase substantially.
The solution? Emissivity compensation.
Many customers continue to rely on oil-sealed rotary vane pumps for many applications. They often struggle with issues related to vacuum oil, including oil leaks, dealing with used oil after oil changes, and oil back-streaming issues that impact their production process. Our partners at Trillium offer some low cost dry pump upgrades that are perfect for customers who want to eliminate the problems mentioned above but don’t want to spend $15-$30K for a new dry pumping system. If you would be interested in upgrading, and you have 3 phase power and process cooling water available at your facility, please reach out to IES for more information.
Upgrade with Trillium and IES.
Trillium specializes in providing world-class vacuum pump repair, new and refurbished
Recirculating chillers are commonly used in mass spectrometry laboratories to provide precise and stable cooling for various components of the mass spectrometer. These chillers offer a continuous flow of temperature-controlled heat transfer fluid, typically water or a water-glycol mixture, to remove heat generated by the instrument.
It is worth noting that the specific configuration and requirements of recirculating chillers can vary depending on the mass spectrometer model, laboratory setup, and cooling needs. Manufacturers of mass spectrometry instruments often provide recommendations and compatible options for recirculating chillers to ensure optimal cooling for their systems.
DuPont™ Kalrez® perfluoroelastomer parts have been used successfully in highly aggressive sealing environments for over 40 years. Kalrez® parts have excellent chemical and thermal stability and have been specially formulated and processed to meet the unique requirements of wafer processing environments. DuPont offers molded O-Rings and custom seals using a series of specialty products and ultrapure processing for the semiconductor industry. Ultrapure processing is standard for all semiconductor product grades.
Click Read More to see process types, service temps, and more >>>
Customers who wish to control three phase heaters require power controllers. How do you decide which method of control to select? ‘Two-leg versus three-leg control’ and ‘zero cross versus phase-angle control need to be considered.’ The following will help you decide when each method is appropriate.
Switching all three legs of a heater load is only necessary for the following:
Grounded ‘Y’ heater: Each phase controls to neutral. Grounded heaters have 4 wires attached. The center of the ‘Y’ heater is connected to the neutral
Typically, the manufacturer of your processing system will know how much heat is needed to be removed from the relevant location in order to operate safely and efficiently. If you need to size a recirculating chiller for a new application, here are some suggestions:
Watts = [(ΔT)°F x K] / S
Where:
DuPont™ Kalrez® perfluoroelastomer parts have been used successfully in highly aggressive sealing environments for more than 40 years. Kalrez® parts have excellent chemical and thermal stability and have been specially formulated and processed to meet the unique requirements of wafer processing environments. DuPont Kalrez® seals are available in standard and custom sized O-rings, as well as customized shapes, that meet the demanding requirements of wafer processing in thermal environments. A proprietary ultraclean process and cleanroom handling is standard for all Kalrez® products utilized in the Semiconductor Industry.
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