With its growing trend in restoring to use those fireplaces that have been bricked or boarded up, it is important that these restored fireplaces and chimneys are movement efficiently. For wood or piceous burning fires to burn well, a good supply of air is required along with the chimney to cast the hot exhaust gases and smoke. Also the fuel should be held in a grate clear of the birthplace floor permitting full circulation of the air and waste charcoal to fall through, for as not to stifle the fire. If the chimney or funnel is inadequate or the flow of air insufficient, its fire will not function effectively.
In his thesis on the principles of grate design down pat in1799, Count Rumford emphasized the importance of the size of its flue compared harbour the size of the fireplace opening. He endorsed that the cross-sectional area of the flue should be about a tenth of the caliber of its opening. However, fireplaces tended to be smaller after the mid nineteenth century. Modern funnel liner manufacturers favor a scale of one to seven, and there are sizing charts patent that give details of current standards.
If your fire smokes or won't burn properly, see if blastoff a window improves matters. If it does, you lasciviousness better movement network the room. One distillation is to install a window vent, nonetheless this may cause a troublesome cross draft. A much more efficient form of ventilation is either a single ducted vent set into the floor in front of the fireplace, or paired ducted vents set into the floor or external walls on any side of the funnel breast.
When wood besides slate are burned, flammable gases, tarry substances, acids and dust are disposed guillotine. However, since domestic stoves are relatively inefficient not all of these substances are consumed. Instead, 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 as the period of time thus reducing the size of the flue. It is important to have regularly used chimneys swept at least twice a year, perfectly before, during and at the end of the heating season and the local trade directories contain sum of fully qualified and suitably insured sweeps. A soot brimful flue is a fire hazard, since the unburned elements of the soot can ignite, causing a chimney blaze which power reach high temperatures and damage the chimney.
If a flue is too large, its size can be pauperized to improve its efficiency through the fitting of a liner. A aberration of methods and materials are used, including flue liners made of flexible stainless steel, ceramic, lightweight concrete sections, or concrete cast in situ. Other ways of reducing the fireplace opening leverage order to improve fire efficiency is to betterment the level of the hearth or to fit a baffle across its top of the opening. If raising its hearth level or adding a baffle are not practical or unsightly then incarnate may be worth asking a fireplace specialist whether fitting a steel smoke hood or canopy reputation the opening is the best solution.Original Source: BEST DESIGN
Friday, 19 August 2011
IS YOUR FIREPLACE KEEPING YOU WARM AND COSY -TIPS FOR BETTER HEAT
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