Seeking expert advice——can negative-pressure, low-temperature steam be converted into high-pressure, high-temperature steam for use in heat exchangers?
Thread Content
This post was last edited by Lantian on 2019-6-14 at 13:18. Experts, I’ve recently run into a rather tricky problem. One of my clients has a system that generates negative pressure, and as a result, some steam at a temperature below 100 degrees is produced. The client wants to recover this steam for reuse, but they don’t have any equipment designed for handling steam at low temperatures under negative pressure. I have a question: can negative-pressure, low-temperature steam at below 100 degrees be converted into high-pressure, high-temperature steam at 140 degrees using pressure-boosting equipment for use in heat exchangers? Does negative-pressure steam condense into liquid water during the process of being converted into high-pressure steam? I can’t figure this problem out for the time being; I hope experts can give me some guidance.
This is a heat load issue, and it’s actually quite simple: heat transfer occurs between two media, with heat always moving from a higher temperature to a lower one! A well that is already almost depleted will require not only greater pumping force if one wants to continue extracting water from it, but also the injection of new energy into it; otherwise, all efforts will be in vain ； If treatment is carried out by applying pressure, that pressure will be very high (from the perspective of energy conservation, this means new energy is being injected); rather than doing that, it’s better to directly conduct heat exchange with the heat exchanger, as that negative pressure will only draw in heat.
According to calculations using software, 1 ton of low-pressure steam requires 130–140 kWh of electricity. It does consume a bit of energy. However, the data generated by software simulations show that this portion of steam will not condense into water; instead, the compression process causes this steam to become superheated, and 160 kilograms of deionized water must be added to cool it down to saturated steam. In other words, an additional 160 kilograms of saturated steam will be generated.
It doesn’t make sense; the compression process should involve steam gradually becoming unsaturated and then turning into water. There must be an issue with the simulation
It’s not that nothing turns into water; when low-pressure steam is pressurized, high-pressure steam with a mass of 20 kilograms and high-pressure steam with a mass of 980 kilograms are produced. However, an additional 160 kilograms of deionized water is needed to cool down the superheated fluid.
A Garrotz blower is needed to re-compress the steam
What is the maximum pressure that a Roots blower can achieve?
What is the maximum pressure that a Roots blower can achieve?
What is the maximum pressure that a Roots blower can achieve?
What is the maximum pressure that a Roots blower can achieve?
Use it directly to heat water for daily use.