Condensation Of Flue Gases In Boilers

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GMAB™ Flue Gas Condensation - Babcock

Flue gas condensation By cooling the flue gas to below its dew point, it is possible to recover large quantities of latent heat. If the flue gas temperature after the boiler is approximately 150ºC it is possible by means of flue gas condensation, to increase the energy efficiency by an additional 20%.

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Flue Gas Dew Point Temperatures - Engineering ToolBox

When the hot flue gases flow through its coil, they are cooled by the heating water that flows back from the radiators to the boiler (return water). The exhaust gases gradually condense. What follows is the heat dissipation of the resulting water vapour to the heating system. To ensure that condensation also occurs, the temperature of the return water must not exceed 57 degrees Celsius. Otherwise it cannot cause the hot flue gases to condense.

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What causes flue gas condensation?

at what temperature does flue gas condensate? The dew point of the water varies based on many considerations, but generally speaking, flue gases begin to condense when the hot water return temperature is between 120°F to 130°F as shown in Figure 3. Figure 3: Example of flue gas condensation temperature based on the hot water return temperature.

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gas condensate boiler – Water Tube Boiler

Protecting Boilers Against Flue Gas Condensation | 2017-08 … Aug 14, 2017· In boilers operating on natural gas or propane, the condensate is primarily water. However, several other chemical compounds come along for the ride, making every drip of condensate a nasty hot acid with a pH in the range of 4.0.

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Low Temperature Corrosion in Boiler and Its Prevention

Aug 21, 2009 · Condensation of these acids results in metal wastage and boiler tube failure, air preheater corrosion, and flue gas duct corrosion. In order to avoid or reduce the cold end corrosion the gas temperature leaving the heat transfer surface in boiler is kept …

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Flue Gas Condensation Could Be Killing Your Boiler | Boiler

Flue-gas condensation - Wikipedia

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Flue Condensation Problems Why | Gas Heating Safety 101

Safety First Flue Condensation Problems. These issues have been observed on all kinds of furnaces, including gas and oil furnaces. Furthermore, if you have this problem or see it on your furnace heating system please consult a professional. If not repaired, eventually, the corrosive condensation dripping down the flue will cause a flue or ventilation failure.

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Condensate Neutralizers - Home - Neutrasafe

combustion; sulfur compounds are added to the natural gas in small amounts as an odorant. Condensation of flue gas produces an acidic solution containing concentrations of nitric, nitrous, sulfuric, and sulfurous and hydrochloric acids. These acids can become more concentrated by repeated condensing and evaporation on heat exchangers and flues.

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Protecting Boilers Against Flue Gas Condensation | 2017-08

Flue gas condensation can occur in any hot water boiler. The causes of this condensation and the importance of properly mitigating it are easily misunderstood. Flue gas condensation is also part of the reason why condensing boilers can have efficiencies up to 99% whereas a typical non-condensing boiler will max out around 80–85% efficiency.

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Protecting Boilers Against Flue Gas Condensation - YouTube

For decades, conventional boilers operating on natural gas, propane, fuel oil or wood were intended to be operated at conditions that prevent the flue gases

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Condensing theory - How do condensing boilers add

Condensation dripping back down the flue causes the flue to corrode and rust prematurely. Flue condensation problems, if left alone, can cause the flue duct to rot and vent hot gases in an area where it could be hazardous to the occupants of the building.

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flue gas condensation question — Heating Help: The Wall

Feb 23, 2004 · Now we come to condensing boilers which uses an aluminum or stainless steel heat exchanger and the cooled return water meets the flue gases furthest away from the flame, and discharges from the hottest part of the heat exchanger, so we are now sucking every drop of heat out of the flue gases, in fact if the return water is 90F the combustion

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Boiler tip of the month - Defective condensate drain

Mar 31, 2021 · Condensate drains are installed in every steam boiler system. Depending on the overall size of the steam network, more than 100 drains may be installed.

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MAXIMUM ENERGY GAIN FROM FLUE GASES

Our flue gas ercs condensation plants recover up to 50 % of the boiler output from thermal energy in heat contained in otherwise unused flue gas. The latent heat of the evaporation or condensation heat is recovered by condensing flue gas. In addition, one part of the sensible heat can be extracted by means of a decrease in tem-

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Heat Exchanger & Chimney Flue Damage From Heating

A heating salesman mentioned that lawsuits were pending (in 1985) against some manufacturers of high-efficiency furnaces (and boilers) - that although condensation problems had been solved through the use of stainless-steel heat exchangers, there were new problems arising from the lower-temperature flue gases.

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Flue Condensation Problems Why | Gas Heating Safety 101

In traditional combustion boilers the steam, and its latent heat, is evacuated through the flue together with the flue gases. The purpose of the condensation technique is primarily to drastically reduce the latent heat dispersed in the flue gases, exploiting to the full …

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Flue temps and condensation — Heating Help: The Wall

Nov 03, 2007 · Condensation I agree, but with some qualifications. The 140°F return temp rule of thumb applies to conventional boilers for preventing flue gas condensation, but with mod/con boilers it's a little more fuzzy as shown in the attached photo taken from Viessmann literature.

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Flue gas condensation - unicalag.it

Protecting Boilers Against Flue Gas Condensation | 2017-08

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Flue Gas Condensers | CleanBoiler.org

In a direct contact unit, water is sprayed in contact with the flue gases, causing condensation and extracting most all of the heat. In units that have a heat exchanger, condensation is likely when there is enough water flow -or- at a cold enough inlet temperature to remove enough heat to cause condensation on the flue gas side of the heat

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Flue Gas Condensation Could Be Killing Your Boiler | Boiler

Protecting Boilers Against Flue Gas Condensation | 2017-08

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