what do you know about vacuum hot water boilers?

1. What is a vacuum hot water boiler? Answer: so-called vacuum hot water boiler, also called vacuum phase change hot water boiler. When the boiler is working normally, the inner medium pressure of the boiler is lower than the atmospheric pressure, and the cold water is heated by phase change heat. Vacuum sealing inside the body of vacuum hot water boiler, negative pressure combustion of heat medium water, steam exchange between steam and heat exchanger, high heat efficiency, one-time treatment and perfusion of heat medium water in factory, no need to replenish water in operation. The unique design of vacuum hot water boiler has formed the characteristics of safety, stability and so on.

2. The composition and structure principle of vacuum Hot Water Boiler? Answer: the furnace body of a vacuum hot water boiler is divided into two parts: the upper part is a vacuum chamber (negative pressure steam chamber), and a tubular steam-water heat exchanger is installed in the space to heat the circulating water flowing through the heat exchanger. Operation principle: during the operation of vacuum hot water boiler, the heat medium water inside the furnace under negative pressure of vacuum absorbs the heat energy released from fuel combustion, boiling vaporizes into low temperature steam, and the low temperature steam rises to meet the system circulating water in stainless steel heat exchanger. Heating circulating water to the user for heating or sanitary hot water. The water vapor itself is cooled and condensed into droplets falling onto the surface of the heat medium and then heated again, thus completing the whole cycle. Heat medium water The cycle of "boiling = evaporation = condensation = heat medium water" is constantly carried out in the enclosed body, so there is no need to replenish condensate water and there is no danger of empty burning. The condensation heat transfer coefficient of steam-water condensation in vacuum hot water boiler is the highest in all heat transfer conditions.

3. What is a vacuum? Answer: vacuum state does not mean absolute pressure is zero, as long as lower than external pressure, can be called "vacuum". For example: vacuum boiler operating inside the shell is debugged as vacuum and maintained between-375pxHg--76mmHg.

4. What is vacuum? A: vacuum refers to the degree of gas rarity in vacuum, usually expressed as "high vacuum" and "low vacuum". High vacuum means good vacuum, low vacuum means poor vacuum. The value of vacuum degree indicates that the actual value of system pressure is lower than that of atmospheric pressure, that is, vacuum degree = atmospheric pressure-absolute pressure. International standard unit of vacuum: Pa (Pa).

5. Why is heat medium water in vacuum hot water boiler heated in vacuum? Answer: the boiling temperature of water is different under different pressures. Under an atmospheric pressure (0.1Mpa), the boiling temperature of water is 100 ℃, while the boiling temperature of water is 4 ℃ under 0.8Kpa pressure. The vacuum hot water boiler works within the pressure range of vacuum degree 2.67Kpa~66.6 Kpa, and the corresponding saturation temperature is 15 ℃ ~ 85 ℃. Therefore, in vacuum, heat medium water is easy to boil and vaporize.

6. The origin of vacuum hot water boiler? A: the basic principle of vacuum hot water boiler was born in 1972 at Zurich University of Technology. In 1975, Japan's TAKUMA Company developed a vacuum hot water boiler on the basis of the principle, which was patented for invention, and was gradually popularized all over the world. This technology has been developed and developed by Korean enterprises, and South Korean TAKUMA, has appeared one after another.

Why need chemical industrial boilers? Why need chemical industrial boilers? Industrial boilers have a very important role in our lives. Life products are basically required for industrial boilers and is closely related to the. Industrial boilers, industrial production, the use of fuel combustion or electrical energy into heat, the thermal heating equipment or material of the workpiece. In general, the boiler is also industrial boilers, but usually does not include them within the scope of industrial boilers. Industrial boilers main components are: masonry industrial boilers, industrial boiler exhaust systems, industrial boilers and industrial boilers combustion preheater means. There are many industrial boilers used in industrial machinery. A foundry cupola furnaces, induction furnaces, resistance furnaces, electric arc furnaces, vacuum furnaces, open-hearth, a crucible furnace. Iron alloy casting oven annealing furnace and the like; in the forging shop, or various furnace for heating the ingot before forging billet, there are various heat treatment after forging furnace for stress relief; in metal heat treatment plant, there are a variety annealed to improve the mechanical properties of the workpiece; means for normalizing, quenching and tempering heat treatment furnace; preheating furnace shop welding and weld seam of the furnace zone; furnace; workshop suitable for powder metallurgy sintered metal. Industrial boilers are widely used in other industries, such as the metallurgical industry metal smelting furnace, sintering furnace ore and coke; petroleum industry cracking furnace retort furnace; industrial furnace gas; Portland cement kilns and industrial glass melting, annealing lehr; baked goods and other industrial furnaces. Ways to enhance the level of energy saving chemical plant boiler which

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Compare prices of gas boiler and boiler vacuum pressure boiler 1, the boiler and the boiler safety vacuum pressure of gas boiler price comparison: atmospheric pressure hot water boiler, run, safer, food safety installation required approval; vacuum boiler negative pressure operation, absolute security without food safety regulator for approval to install and does not require annual inspection. 2, the vacuum boiler pressure boiler feature comparison: Direct direct pressure hot water boiler, only way to supply hot water, not pressurized; indirect pressure hot water boiler only single supply hot water, hot water pressure; vacuum hot water boiler can be a machine that can simultaneously supply multiple hot water, hot water system pressure 1.0Mpa, high up to 2.0MPa. 3, vacuum pressure boilers with heat boiler comparison mode: pressure hot water boiler with water as heat medium, through the water - water heat exchanger externally heated water; vacuum boiler using high-purity deoxygenated water as heat medium, by steam - water condensation heat transfer external heating hot water. Due to the different thermal medium, it is faster than the boot vacuum hot water boiler pressure hot water boiler. 4, compared to the vacuum boiler with atmospheric life of the boiler: pressure hot water boiler service life of not more than ten years; vacuum hot water boiler due to internal never scaling, the service life of 20 years. 5, the price of gas boiler vacuum boiler pressure boiler installation requirements comparison: multi-pressure boiler equipment, complicated installation, long duration, large investment; vacuum boiler installation is simple and convenient. Pressure hot water boiler so that the boiler room and requires specialized dedicated kotelshchik, the vacuum boiler does not require a dedicated boiler room and kotelshchik, can be installed in the basement, the roof or intermediate floors. 6, the initial vacuum pressure boilers and boiler investment comparison: multi-pressure hot water boiler equipment, initial investment is large; the vacuum boiler because less equipment, installation flexibility, a small room, investment savings of over 30%.