Characteristics of different types of vacuum vacuum phase transition phase transition boiler fuel boiler according to the classification method is the most important, this approach allows people to buy the right. With the increase in the degree of industrialization and deepen people's needs, vacuum phase transition boilers in the market accounted for an increasing share of different types of boilers vacuum phase transition characteristics determine the most suitable location for it. Based on this situation, we should understand its classification and a variety of other features to facilitate proper purchase. Here we will tell you different types of vacuum phase transition characteristics of the boiler. Vacuum phase transition boilers and boiler can be called a vacuum, it works and focus on the vacuum phase transition. The fuel can be divided into four categories, but may be three and wherein a category is thus divided into the following two categories, and describes the characteristics of the major categories. When (a) an electrically heated vacuum heating boilers vacuum phase transition phase transition into the operating electric boiler, inside a vacuum environment. At this time, the intermediate medium oxygen in water will be discharged to the outside electric boilers vacuum phase transition, and therefore does not cause oxidation corrosion in the boiler, cause damage to the device. Meanwhile, vacuum hot water boiler heating heat exchanger portion of the material used is stainless steel, corrosion will not occur. Further, the electric vacuum hot water boiler only once was added a small amount of the heat medium water, increase nor decrease is running, the internal no scaling. (B) Such a phase change in vacuo fuel (gas / coal) boilers vacuum phase transition is the import burner, its high combustion efficiency, low noise and exhaust emissions. Internal exchanger made of stainless steel, in this regard to ensure high heat transfer efficiency, on the other hand can ensure a clean water quality. At the same time, its smoke tube interior spiral spoiler, in order to improve heat transfer efficiency, and lower operating costs. Further, it is the overall use of square configuration, the boiler and the heat exchanger is a one-piece design, so that a small volume of its structure compact shape the United States. On the face of vacuum phase transition boiler rough classification, and describes the different categories with the characteristics, so that we can be aware of their knowledge. This knowledge is part of the basics when buying a vacuum phase transition boiler, we need to keep in mind, so that in the selection of purchase, to make the most appropriate choice, to choose the most desirable machine.

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May 5, the District Environmental Protection Bureau, Jia Guangsheng nuclear industry two hundred forty-three Brigade, WONG-school and other relevant units after receiving the notice from coal-fired boilers out of progress were examined, the examination requires companies to accelerate the implementation of the main responsibility, solid promote renovation work, to ensure the completion of coal-fired boilers out of the task on time.

Vacuum hot water boiler how much you know? "A" 1. What is a vacuum hot water boiler? A: The so-called vacuum hot water boiler, also known as phase-change vacuum hot water boiler. Refers to normal operation when the internal pressure below atmospheric pressure boiler medium, by heating the cold phase change heat boiler embodiment. (Internal vacuum-tight vacuum hot water boiler body, the heat medium water pressurized combustion, the generated steam heat exchanger for soft drinks, high thermal efficiency, the heat medium water at the factory in disposable infusion process, without replenishment operation. Vacuum hot water boiler unique design, form a safe, stable, etc.) 2. composition principle structure of the vacuum hot water boiler? A: vacuum hot water boiler furnace divided into two parts; the upper half portion of a vacuum chamber (vacuum vapor chamber), which is provided with a tubular interior space of the vapor - water heat exchanger for heating flowing through the heat exchanger Recycled water. The operating principle: vacuum hot water boiler is running, the negative pressure in the vacuum furnace body heat medium water absorbs heat energy released by burning fuel, Boiling water circulating system encounters a stainless steel heat exchanger of the low temperature steam, low temperature steam rises, heating recycled water to users for heating or hot water. Itself is cooled steam condenses into water droplets fall to the surface again after the heating medium is heated, thereby completing the entire cycle. Heating medium water constantly in the body with a closed circulation heating evaporation == == == heat medium condensed water, condensed water without added thus, no danger of burning air. Vacuum hot water boiler using soda condensation heat, all heat exchangers operating condition, soda condensation heat transfer coefficient is the highest. 3. What is a vacuum? A: The vacuum does not mean absolute pressure is zero, as long as the external pressure is lower than, for example, can be called a vacuum: a vacuum when the pot boiler shell is commissioning a vacuum state, and maintain -375pxHg - between 76mmHg.. 4. What is the degree of vacuum? A: refers to the degree of vacuum in the gas lean degree of vacuum in the book, usually with a low degree of vacuum and high vacuum to FIG. High degree of vacuum represents a good degree of vacuum means, a low vacuum degree difference represents the degree of vacuum means. Vacuum degree is lower than the actual value of the pressure of the system shows the atmospheric pressure value, i.e., the degree of vacuum = atmospheric pressure - absolute pressure. Vacuum of international standard units: Pa (Pa). Why The vacuum heating medium water heated hot water boiler in a vacuum state? A: water at different pressures, different boiling temperature which, at one atmosphere pressure (0.1Mpa), the boiling temperature of water is 100 deg.] C, and under a pressure 0.8Kpa the boiling temperature of the water was 4 ℃. Vacuum hot water boiler is operating within a pressure range of vacuum degree of 2.67Kpa ~ 66.6Kpa corresponding saturation temperature is 15 ℃ ~ 85 ℃. Thus, in a vacuum state, the heat medium is easily Boiling water. 6. origin vacuum hot water boiler? A: The basic principles of vacuum hot water boiler was born in 1972, Zurich University. In 1975 the Japanese company TAKUMA Based on this principle has developed a vacuum hot water boiler and patented invention, then gradually popularized throughout the world, this technology has been developed and the development of Korean companies have emerged TAKUMA Korea, China in the late 1980s Some manufacturers have developed vacuum hot water boiler, but due to technical problems, mainly due to gas generated immiscible declining degree of vacuum problems can not be solved electrochemical reaction occurs boiler water and vacuum seal of iron, has not been promoted . 1990s South Korea's manufacturing enterprises to enter the Chinese market relatively late in 2003 about the domestic boiler manufacturers began producing vacuum boilers.

A number of factors affecting vacuum gas boiler thermal efficiency of domestic basically coal to natural gas in to work, the choice of vacuum gas boiler vigorous, very large to avoid the contamination of dust, smoke the same time the risk of nitrogen oxides and other gases He won the curb. Thermal efficiency is an important measure of the provisions of vacuum gas boiler, behind everyone together to explore a number of factors boiler thermal efficiency of gas under the influence of vacuum. Through the investigation of the persons concerned, vacuum gas boiler heat loss is probably due to it containing the two: combustion air and flue gas emissions than ideal sufficient heat loss. Emission reduction of heat loss to be fitted at the end of the stack waste heat boiler recirculation gas is arranged in vacuo, or in the selection of the more advanced features FGR boiler. Combustion air ratio is not fully resolved over failure: universal gas ejector-type vacuum boiler with burner, the air-fuel ratio can not be caused to be automatically adjusted. Portion of the gas boiler is a mechanical vacuum blower burner, not over the air-fuel ratio factors initiator has the following points: air-fuel ratio over the probability roughly fall into two categories comprising: when the excess air stream, having a limited excess cold is the action of heat, vacuum gas boiler initiation energy increases, the thermal efficiency of the gas boiler reduced in vacuo; non-compliance when the airflow, burning is insufficient happens, vacuum gas boiler thermal efficiency decreased.

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