Ask a question about heating media
Thread Content
My workshop uses 1.0MPA low-pressure saturated steam flashed from 4.0MPA. Can this low-pressure saturated steam be used as a heating medium? Will water hammer occur?
It can definitely be used as a heating medium.
As long as there is heat, it can definitely be used as a heating medium； Water hammer depends on design and control of production operations
It feels like there is less pressure and it’s not that good to use. . .
It can definitely be used as a heat source. In pressurized pipelines, due to some external reasons (such as valves suddenly closing, water pump units suddenly stopping, etc.), the flow rate of water changes suddenly, causing alternating changes in pressure that rise and fall sharply. This hydraulic phenomenon is called water hammer, or water hammer. The pressure increase caused by water hammer can reach dozens or even hundreds of times of the normal operating pressure of the pipeline. Such large pressure fluctuations often cause major accidents such as strong vibration of the pipeline, damage to valves, disconnection of pipeline joints, and even pipeline bursts. Therefore, in the design of a pressure water diversion system, water hammer calculations must be performed to determine the maximum and minimum water hammer pressures that may occur. Water hammer pressure is calculated directly by water hammer △P=ρ * C * (V0-V) This is the formula for calculating direct water hammer pressure obtained by Zhukovsky in 1898. When the valve suddenly closes completely, that is, v=0, the calculation formula for the maximum water hammer pressure is △P=ρ * C * V0 △P - water hammer pressure. ρ - density of water. C - propagation speed of water hammer wave. V 0 - flow velocity in the tube before water hammer. V - flow velocity in the tube after water hammer.
As long as the heat can be increased, it can be used for heating. No matter how low the pressure or temperature is, it is OK. As for whether the heating effect is good or not, that is another matter.
It can be used as a heat source. The price of 1.0MPA steam is around 200, and the 0.035MPA steam is used in the device. Not to mention...
The 1.0MPA low-pressure saturated steam that flashes out can be used as a heat source for other equipment! . Water hammer occurs - no! Flash evaporation is carried out in the container, and the steam and liquid are separated from the upper and lower outlets of the equipment respectively!
Yes, our device uses the flashed gas after heating the medium with 3.5MPa steam as the deaerator stripping steam.
Thank you for your guidance. I want to write a paper on this aspect. Thank you for your suggestions.
Of course it can be used as a heating medium. The occurrence of water hammer mainly depends on your process and control plan.
Can be used as heating medium, the reason is: After the fluid flashes, only the state changes, but the thermal energy does not change. What may have changed is that the quality as a heating medium has deteriorated. Water hammer will not occur. :lol
No problem, it can be used as a heating medium； As long as it is properly designed and operated, water hammer will not occur.