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Gas-fired steam boilers of different types and their advantages on the common market gas steam boiler model, what does? According to data accumulated over the years, the statistics, the results are as follows, for your reference to understand. WNS fuel gas steam boiler, low cost, the implementation of the pipeline, so that lower gas prices, fuel cost decreases; the model of high boiler combustion efficiency, fuel savings, investment buying low fuel costs; the whole side pull butt welds, boilers the use of safe, long life, low maintenance costs. High efficiency, there is arranged a tail flue gas condensation recovery, can effectively control the exhaust gas temperature, high thermal efficiency of the boiler; using automatic burner, water continuous electric adjustment, high combustion efficiency. SZS fuel gas steam boiler, with international popular three-pass shell type, all wet back structure, large volume combustion chamber design, burning more fully. Internationally renowned burner, combustion chamber all-corrugated furnace structure, both to strengthen the flue gas disturbance, but also increases the radiation heat transfer area. Not only increases the stiffness of the furnace, and effectively weaken the expansion stress of the furnace; enhance both heat transfer, but also to promote the fuel combustion within the furnace. Vacuum gas hot water boiler, high safety, vacuum boiler because the phase change medium flow system below atmospheric pressure, absolute pressure inside the unit is running is 0.02 ~ 0.08MPa, the unit is in a vacuum state, and thus the explosion does not occur. Long life, internal boiler fouling does not occur, increasing the life of the boiler use. Heat exchanger portion with stainless steel, corrosion-resistant, the design service life of 20 years. High degree of automation, the use of the control device and mechatronic joint control programmable logic controller. Long life, scientific product design, advanced processing technology and strict quality control, all factory production of boiler equipment. The advantages of gas steam boiler in recent years reflects the more comprehensive. Exacerbate air pollution causes the gas steam boiler into the market faster. Gas-fired steam boiler is a clean energy, natural gas fired industrial boilers, and with the traditional burning of fossil fuels such as coal boiler has unparalleled advantages in comparison. Natural gas boiler steam boiler market development trend in the future, the future market development of industrial boilers except by factors affecting the pace of development of our national economy and the scale of investment, etc. In addition, more and more restricted energy policy and energy-saving, environmental protection requirements.
Comparison of heat efficiency comparison of two boiler vacuum boiler pressure boiler: 1, the vacuum boiler water volume is small, a water do not participate in the systemic circulation, the burner startup operation more often than atmospheric boilers, burner thermal efficiency is low, the degree of vacuum under the premise of stable, high-energy vacuum boiler thermal efficiency of 91%, the degree of vacuum devices to change operating subsidiary boilers instability will reduce the thermal efficiency. Operating costs can not be stabilized, as the vacuum pumping equipment and reducing the useful life of the control element, to increase the thermal efficiency of the failure rate will be lower. 2, boiler pressure hot water boiler volume greater than the vacuum, nor participate in a water circulation system, less the number of starts burner, burner high thermal efficiency, thermal efficiency of hot water boilers is 91%, and stable efficiency boiler and hot-water operation, no then the impact of multi-device failure rate, the structure is simple and durable. Comparison of the heat exchanger structure is built of a vacuum through a steam boiler heat exchanger, a short warm-up time. U-carrying stainless steel boiler tube heat exchanger, a cleaning may be opened flange, the other end can not be opened can not be completely cleaned thoroughly heat exchanger. 2, the boiler through the water pressure - heat exchange, the preheating time longer than the vacuum boiler water. Built using copper-line boiler tube heat exchanger, there are two flanges, more thorough cleaning. Compare the life of a boiler, the boiler due to the vacuum suction vacuum boiler work, less time to add water to reduce boiler fouling, corrosion and other problems oxygen, due to the boiler closed, water can not once a year dosing maintenance, boiler pressure has also taken advanced international scale, anti-corrosion measures oxygen, the actual life of the boiler and pressure boiler considerable, even if the long life of the body a little, boiler control elements, the service life of the burner can not be too high pressure boilers. 2, boiler pressure hot water boiler with a water softener equipment boiler fouling problems can be overcome, itself an indirect hot water boiler feed water is also very small, sacrificial anodes to reduce the oxygen corrosion protection internationally, annual boiler maintenance dosing may slow down steel oxygen corrosion, boiler plate and the outer heat insulation take a unique two-component embodiment, with water, acid and alkali resistance, oil and other functions, since the insulation adhesive material applied on the boiler body, with the boiler plate to prevent oxygen corrosion in air, vacuum boiler glass wool insulation, can not prevent oxygen corrosion of the steel sheet with air, so the life of the boiler water is not lower than the vacuum boiler 2 times higher, and the life of no basis.
Hot water boiler in the school dormitory and classroom building are generally used for central heating, drinking water and bathing water aspects of teachers and students and so on. Shanxi Linxian County high school is an important educational school personnel training for the community. 2017, the school responded positively to national coal to gas and other environmental policies, but also to provide students with a more favorable living and learning environment, the school decided to phase out conventional coal-fired boilers, clean and environmentally friendly replacement for the gas boiler. After getting to know and choose the boiler industry, major companies, determined cooperation with professional production of clean fuel boiler fast boiler-by-side to provide a fast 4.2MW integrated condensing gas hot water boiler (WNS4.2-1.0 / 115 / 70-YQ).
Problems existing boiler which a vacuum tube bundle effect bunching effect is widely present in the heat exchanger shell, likewise, vacuum boiler is inevitable. Nusselt proposed an improved condensing heat transfer coefficient formula for 1916. However, due to many differences in bundle properties (heat medium) temperature is saturated, the surface tension outside the refrigerant, the corrected correlation will also be corrected based on experimental results. But again, the bundle effect is still inevitable. 2, it is difficult to maintain the degree of vacuum maintenance and control of the effect of vacuum, vacuum boiler born. When the vacuum boiler stability, the interior portion of the vapor in the vapor space for heat exchange bundle and condensed into a liquid, negative pressure environment part for maintaining a vacuum in the boiler. Theory, boiling and absorbing heat cold water evaporation eventually will be in equilibrium, with the actual amount of heat during operation, the vacuum pump to maintain the boiler typically require external pressure balance, control the heat required to maintain combustion stability of adjusting the water temperature. These external adjustable mechanical means to destroy the balance of the system itself, not only the vacuum boiler system more stable and unstable heat transfer process last longer. 3, exhaust loss if these two exist only in the vacuum boiler, improve energy efficiency research boiler eternal subject. Currently, most vacuum boilers are gas-fired boiler for the boiler, the exhaust gas loss of vacuum insulated with appropriate measures to become a major energy loss.
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