how does a chimney work diagram

To open up an old chimney the flue must be cleaned and inspected by a professional chimney sweep and possibly relined to meet regulations. All the pieces and parts of your chimney are simply a mystery.

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Understanding how your chimney works will help you to keep up with regular inspections and maintain a safe efficient and aesthetically pleasing chimney in your home.

. The bricks the flue the liner the cap the crown chase cover flashing damper and the smoke chamber. The chimney flue made from insulated metal or terracotta safely carries combustion gases up the chimney. The throat of the chimney is located at the intersection between the chimney and the fireplace at the base of the chimney and at the top of the firebox.

Clay liners are the least durable of the three and are usually the original lining of a chimney. The mechanism behind a kitchen chimney is very simple. See the diagrams below and read the descriptions of the different chimneys how the parts work together and some of the maintenance and repairs chimneys require.

The chimney cap keeps objects from falling into the chimney and with a spark arrester keeps sparks from escaping. If you suspect that your chimney has an issue or if you have not had it inspected within the last year give us a call at 781 893-6611 or click here to get in touch. A chimney may in fact contain more than one flue and its type is dictated by the heat-producing appliance required.

Once the chimney is built install sheet metal on all four sides of the 2-inch opening between the outside of the chimney and the combustible materials. Below is a picture of me looking up into the throat of the chimney from our living room fireplace. Wind Induced Downdraught can give rise to a situation where smoke from a shared chimney stack is blown down a nearby chimney that may not even be in use at the time.

The Anatomy of a Chimney will help you to better understand how things work with your fireplace gas or wood stove even your furnace. They work together as a system. Here are the basic parts.

Chimney liners encase the walls of your chimney and lead smoke up and out of it. The air inside a chimney needs to be hotter that the outside so it will pull in air from the fire and the cold rooms the fire is trying to heat. This can happen when a house has two flues sharing a single stack or two separate houses sharing a single stack.

A fireproof box that fits into an existing fireplace. Chimney Sweep Service Terms. Smoke and oil droplets emitted during the cooking process are drawn into the chimney.

If you are like most people you chimney is just a way that smoke from your fireplace exits your home. A door in the middle of the firebox that allows for easy removal of ash. First off your chimney is designed to provide an exit path for the combustibles that you burn inside your fireplace.

A kitchen chimney can be ducted or ductless. Use the flashing where the chimney and roof meet and as a lining installed under the chimney cap. The parts of a chimney can be broken down into nine distinct categories.

When the chimney sweep comes to your chimney sweep appointent you will have working knowledge of your chimney and understanding of any work the chimney sweep does on your chimney from. Install metal flashing where the chimney goes out through the walls. Lighter warmer air is able to rise up and out of your chimney and is replaced by.

When air pressure in a home is in balance air is flowing into the home at the same rate that it is flowing out of the home. 4 primary factors that affect chimney draft. Knowing the parts of a chimney will allow you to notice when an essential component becomes damaged or is no longer functioning.

Recommended chimney cap materials include stone and concrete either pre-cast or cast in place. That supply of air is dependent on the ability of the chimney to exhaust flue gases as they are created by. The chimney drives the system by exhausting flue gases from the stove and simultaneously pulling fresh combustion air into the stove.

The hotter the air and gases inside a chimney get the stronger the draft will be. This movement of combustion air and exhaust is called draft. In many fireplaces a damper can be found located within the throat of the chimney.

A chimney simply put is a vertical tube designed to draw combustion products smoke and gasses from an appliance like a wood stove or fireplace to the atmosphere outside the house. Air pressure is the weight of the atmospheric pressure exerted onto earth. It should extend past the chimney wall by at least 2 inches 5 centimeters and have a drip edge to channel water away from the chimney.

As the hot gas rises through the chimney flue and fresh air enters the appliance it creates a difference in pressure known as a draft. But like your car dishwasher and other things. Additionally if the chimney is taller.

The height of the chimney will also effect drafts. The diagram on the right provides an insight into this phenomenon which is know as wind. The purpose of a cap with a spark arrestor is to prevent the entry of rain animals and debris while freely allowing the exhaust to exit the home through the chimney flue.

Crowns are sloped to guide water away from your chimney protecting the internal chimney parts and masonry. Cracks and fading mortar where chimney pipes come out of the crown. The diagram below dissects a masonry chimney with one flue.

The Anatomy of a Chimney. There is much more to understanding the anatomy of a fireplace and chimney system but this is a great place to start. The smoke and gasses rise up the chimney through a process known as draft and flow.

The grease is trapped by the filters while the moisture and smoke are channeled out through the ducts and released into the outside environment. The chimney cap goes over the top of the brick flue housing. Chimney Sweep Services Chimney Diagram.

The hotter the gases are compared to the outside temperature the stronger the draft will be. The purpose of a chimney is to take the combustion products smoke and gasses from the appliance to the atmosphere outside your home and at the same time to draw air for combustion into the appliance. A chimney crown is a concrete slab that sits on top of your masonry chimney protecting the chimney around the flue.

When you have a roaring fire going in your home the warmer gasses in the flue rise while the cooler fresh air from the outside has more pressure. A compartment at the base of a fireplace that catches ash. A continuous supply of air is crucial to maintaining a steady hot fire.

We offer a. The taller the chimney the stronger the draft. In essence it is the difference in pressure between.

The smoke dome and wind shelf work together to funnel smoke and gases out the chimney. Cracks in the crown. They can be made from aluminum stainless steel or clay.

In order for the chimney to work well a draft needs to be created inside it. A door in the chimney thats behind the fireplace or outside the house where debris can be removed. When its time to replace your liner in your masonry chimney stainless steel is the way to go.

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