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By: Anna Crown

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Sunday, 3-Nov-2013 19:06 Email | Share | Bookmark
Is Your Fireplace Keeping You Warm and Comfortable? Pointers Fo

In his thesis on the principles of fireplace design published in1799, Count Rumford highlighted the importance of the size of the flue as compared to the size of the fireplace opening. He recommended that the cross-sectional location of the flue should be about a tenth of the size of the opening. However, fireplaces had the tendency to be smaller after the mid nineteenth century. Modern flue liner makers favor a ratio of one to seven, and there are sizing charts published that provide details on current standards.

If your fire smokes or won't burn appropriately, see if opening a window improves matters. If it does, you need better ventilation in the room. One solution is to install a window vent, although this may cause a problematic cross draft. A much more effective type of ventilation is either a single ducted vent set into the floor in front of the fireplace, or twin ducted vents set into the floor or external walls on each side of the chimney breast.

When wood and coal are burned, flammable gases, tarry substances, acids and dust are given off. However, because domestic stoves are relatively ineffective, not all of these substances are consumed. Rather, they rise up the chimney and some of them condense on the inside of the flue. Unburned carbon combines with these tars and acids, creating soot, which builds up over a period of time, therefore decreasing the size of the flue. It is essential to have regularly used chimney sweeps at least twice a year, preferably before, during, and at the end of the heating season. The regional trade directory sites contain details on fully qualified and appropriately insured sweeps. A soot loaded flue is a fire hazard, because the unburned elements of the soot can fire up, triggering a chimney fire which can reach high temperature levels and damage the chimney.

If a flue is too large, its size can be reduced to enhance its effectiveness by the fitting of a liner. A variety of methods and materials are made use of, including flue liners made from flexible stainless steel, ceramic, lightweight concrete sections, or concrete that has been cast. Other methods of decreasing the size of the fireplace opening in order to enhance fire efficiency, is to raise the level of the hearth or to fit a baffle across the top of the opening. If raising the hearth level or adding a baffle is not useful or is unattractive, then it may be worth asking a fireplace expert whether fitting a metal smoke hood or canopy in the opening is the best solution.Visit This Website\nPhoenix Heating Repair

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