Tue, 10 Jul 2018 03:28:05 +0000
How does a vacuum furnace convert heat
The vacuum furnace forms a vacuum environment with negative pressure inside the closed furnace body and fills the body with heat water. Heat the water by burning or otherwise heating it, then evaporating it – condensing it into a heat exchanger, which heats the water that needs to be heated.
Heat transfer signal of vacuum boiler:
Oil, natural gas, gas, electricity – > combustion heat (electric conversion) – > heat medium water – > after boiling steam condensation heat transfer of — — — — > > heat exchanger heat transfer > water
Vacuum boiler working principle: using the characteristics of low water under the condition of low boiling point, rapid heating sealing furnace heat medium filled in water, high temperature steam, the heat medium water boiling evaporating out water vapor condenses on the heat exchange tube heat exchange tube in cold water, hot water supply.
Standard sea level atmospheric pressure: 1.013 x 105 pa = 101.3 KPa, the water’s boiling point is 100 ℃; The higher the altitude, the lower the atmospheric pressure and the lower the boiling point:
The Tibetan plateau: the average altitude of 4000 m, atmospheric pressure of 62 kpa, at this time the boiling point of water is 87 ℃;
Mount Everest: up to 8848 m, 33 kpa atmospheric pressure, the boiling point is 71 ℃;
Vacuum furnace by pumping air into vacuum state, almost no air to form a low pressure environment, and then use water (less than atmospheric pressure) under low pressure low temperature steam boiling, soda condensation heat transfer way will work the principle of heat output.
Heat medium water is in a vacuum furnace after deoxidization, descaling and other special processing of high pure water, a filling to complete before they go out, when used within the unit closed cycle (vaporization – coagulation – vaporization), does not increase, not decrease, within the unit life does not need to supplement or replace