diffusion pump वाक्य
उदाहरण वाक्य
मोबाइल
- The diffusion pump is widely used in both industrial and research applications.
- Older instruments may have used oil diffusion pumps for high vacuum regions.
- The oil diffusion pump is operated with an oil of low vapor pressure.
- Most modern diffusion pumps use silicone oil or polyphenyl ethers as the working fluid.
- The two main types of molecular pumps are the diffusion pump and the turbomolecular pump.
- The outside of the diffusion pump is cooled using either air flow or a water line.
- One major disadvantage of diffusion pumps is the tendency to backstream oil into the vacuum chamber.
- Unlike turbomolecular pumps and cryopumps, diffusion pumps have no moving parts and as a result are quite durable and reliable.
- Data presented in Table 3 demonstrates polyphenyl ether to be superior to other fluids that are commonly used in diffusion pumps.
- An oil diffusion pump is used to achieve higher vacuum ( lower pressure ) than is possible by use of positive displacement pumps alone.
- Diffusion pumps blow out gas molecules with jets of oil or mercury, while turbomolecular pumps use high speed fans to push the gas.
- For this specific film analysis, the source for contamination was traced to an oil diffusion pump and replaced with an oil free pumping system.
- Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump is typically used to maintain an outlet pressure around 0.1 mbar.
- As the vapor jet hits the outer cooled shell of the diffusion pump, the working fluid condenses and is recovered and directed back to the boiler.
- His first major development was the improvement of the diffusion pump, which ultimately led to the invention of the high-vacuum rectifier and amplifier tubes.
- Automatic valves and diffusion pump like injection into a large buffer-tube in front of the backing pump prevents any overpressure from one pump to stall another pump.
- The pumped gases continue flowing to the base of the pump at increased pressure, flowing out through the diffusion pump outlet, where they are compressed to ambient pressure by the secondary mechanical forepump and exhausted.
- Initially, a low or roughing vacuum is achieved with either a rotary vane pump or diaphragm pumps setting a sufficiently low pressure to allow the operation of a turbo-molecular or diffusion pump establishing high vacuum level necessary for operations.
- Although its use has been mainly associated within the high-vacuum range ( down to 10 " 9 mbar ), diffusion pumps today can produce pressures approaching 10 " 10 mbar when properly used with modern fluids and accessories.
- Sebacic acid and its derivatives have a variety of industrial uses as plasticizers, lubricants, diffusion pump oils, cosmetics, candles, etc . It is also used in the synthesis of polyamide, as nylon, and of alkyd resins.
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