condensing boilers achieve much higher efficiency

After the condensing boilers achieve much higher efficiency superheater tube leak cut off, why in the vicinity of the superheater tube is easy to over-temperature? Superheater tube weld leakage or damage due to overheating the superheater tube leak, except in special circumstances, welding or inability to replace the entire root large workload, the approach generally taken damage superheater tubes the two sealed cut . Damage to the superheater tubes because there is no cooling steam, due to severe overheat quickly broken off, so that between two adjacent rows of superheater tubes form a larger flow cross-section a so-called "corridor smoke." Flue gas flow corridor less resistance, high flue gas velocity, so that improved heat transfer coefficient of the exiled fireside; the presence of the flue gas flue gas corridors radiating layer thickness increases, radiation heat transfer coefficient is improved. Since the main thermal resistance of the heat transfer tube side of the superheater in the flue gas, the flue gas side heat transfer coefficient is improved necessarily superheater flue pipe corridor on both sides of heat absorption increases. Superheater absorption heat increases, not only the temperature difference between the wall and the vapor temperature was raised and steam is increased, so that the superheater tube wall temperature of the flue gas on both sides of the corridor significantly increased.

Third, to maintain a certain temperature difference between flow and return can improve the thermal efficiency

Condensing boiler circulation pump in the heating system used is a keep up the flow of water medium, so that the high-temperature water in the boiler to the end device comes out. But the circulation pump in the boiler is a certain speed, that is, no matter how much power in a condensing boiler combustion, a circulation pump is always in operation speed, the use of variable frequency pump, pump speed changes with power boiler changes, it will make flow and return temperature is maintained constant temperature difference, so to maintain a certain temperature difference between flow and return of the thermal efficiency can be improved.

At the same time, when you start gas condensing boilers achieve much higher efficiency, but also pay attention to check the observation hole, manholes, hand holes, flanges and valves for loose everywhere, if there are loose reinforcement in a timely manner; if after the reinforcement process still leakage problems, will be carried out to check the shutdown.

Response to national environmental policy in recent years, Changzhi City, various enterprises and institutions from themselves, have the condensing boilers achieve much higher efficiency environmental transformation and selection. However, due to various boiler plant manufacturers of products of varying quality, there is a variety of security risks in the operation; taking into account the level of professional fireman some units of non-compliance, the boiler operating procedures less skilled, the above reasons, Changzhi City Special inspection at this year's "safety month" held gas boiler safety planning activities of technical training courses, the city's use of gas-fired boiler units represent 233 enterprises and safety training. Fast boiler has a strong position in the field of clean-type gas boilers, and has a wealth of experience. Changzhi City, the special prosecutor of the special fast Boiler training for each unit represents.

condensing boilers achieve much higher efficiency Related Information

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2010-11-27 · Condensing boilers operate at higher efficiencies at the lowest return temperature possible. The first simple controlled condensers needed over-sized radiators to drop the return temperature. But a heating system is running at "part load" for 95% plus of run time. They run at full load when the temperature outside is below -3C.

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Condensing boiler - Wikipedia. 2019-4-26 · Condensing boilers are water heaters fueled by gas or oil. They achieve high efficiency (typically greater than 90% on the higher heating value) by condensing water vapour in the exhaust gases and so recovering its latent heat of vaporisation, which would otherwise have been wasted.This condensed vapour leaves the system in liquid form, via a drain.

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