Discussion on vacuum level in water jet vacuum pumps
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The water temperature of a water-jet vacuum pump has a direct impact on the level of vacuum; what methods are used to address this issue regarding water temperature?
A heat exchanger can be added at the water injection inlet. The cooling medium can be chilled water (7°C inlet to 12°C outlet)
Generally, a heat exchange coil can be installed in the tank (the tank or container located below the atmospheric leg), and depending on the situation, circulating cooling water or chilled water can be used as a coolant for cooling.
Agreed. However, depending on the required vacuum level, the temperature at the inlet of the jet pump is controlled; in some cases, direct process water is used in a cycle through a cooling tower, while in other cases deep well water is utilized
The vacuum pumps used in our factory operate for about 7 hours per cycle; the water temperature is around 40 degrees, and deep well water is used for heat exchange, which yields excellent results and is cost-effective.
Our factory uses shell-and-tube heat exchangers for cooling; if the water temperature gets too high, we simply change the water
Use your own process water with a high salt content under vacuum
Water temperature is a factor that affects vacuum level; then does density also affect it? If density does influence vacuum level, will adding salt to create a saltwater solution with higher density increase the vacuum level?
For small systems, it’s sufficient to simply change the water. Or if it operates intermittently, natural cooling is sufficient