who dose the chimney absorb smoke physically /// Who do i build a mud house?

Question

im building a fire place. got any tips that may help. please explain its physics.

what are the steps of building a mud house in a desert and how do these steps help.

Answer 1

A chimney is a closed pipe connecting a high pressure air mass to a low pressure air mass (the elevated end). Remember that air has weight and the higher you go up a column of air, the less it weighs. So air and possibly the smoke within it flow upward from high pressure to the low pressure exit at the top of the chimney. This effect is enhanced if a window in the same room is left open so that heavy cold air may flow into the room. I mentioned the word possibly because even if there is no smoke, the chimney effect will still work. Also, hot air from a fire in the fireplace will rise because it is lighter than heavy cold air. So this rising hot air will lift up the chimney and drag smoke along with it.

To build a mud house you need a good source of clay, shovels to dig the clay, a few brick or block molds, a source of water, and hot sun (or an oven). Dig the clay and mix some with water to make a medium density mush. Fill the mold (s) with the clay mush and place them into the hot sun or an oven to bake dry. After the molded clay has been baked dry, remove the clay bricks from the molds, stack, and cover them. Continue the process until you have sufficient quantity to build the necessary walls for the house. A good size for such clay blocks might be the same size as a common cinder block "cap block."

The blocks may be simply stacked as needed to construct your house, or they may be cemented in place using more of the clay mush mentioned earlier.

Window and door openings may be made by installing strong wood frames in the appropriate places. Screw or bolt the window or door mounting hardware into these frames. Build the block structure completely around those frames.

Roof structures vary in design and complexity. The simplest roof might be made of small beams made from small trees with their branches stripped off. Install the beams next to each other and place them such that one end is higher than the other. This gives the roof a "pitch" so that rain water will run off. This pitch should be at least four inches up per foot of length. Cover the beams with a thatch of long marsh grass at least one foot thick, or, if available, sheet tin screwed down to the wood beams.

While laying the clay blocks, consider making a fireplace in one wall with a suitable chimney extending well above the roof line. This fireplace might be used for cooking and heating in the event you decide to actually live in the house.

Answer 2

The hot air rises, creating a vacuum that pulls in air from the front of the fireplace to heat up and rise, creating a flow. Also, if a bit of breeze, air flowing over the chimney top can create a low pressure area (bernouli effect) that pulls air up the chimney, again creating flow.

Tips: use the proper materials - firebrick or flue liner anywhere in contact with fire or smoke. Outside materials don't have to be firebrick, but do need to be non-flammable.

Answer 3

In an appropriate technology class we learned how to build with adobe or make home made clay bricks. The key is testing the clay first . To do so you add a little water , and compress into a ball then throw on a hard surface if clay stays together it is good for building if it crumbles , it is not suitable . To make bricks you use 1/2 course sand mixed with clay and add 10% portland cement , mix completely and add just enough water to make it stick together then compress in brick press, carefully remove and keep damp for a week .
For adobe you use clay mixed with straw on other fiber and add a little water , you then ram it into a form in place where you want to build wall , and it should be a minimum of 12 inches thick , as clay dries you remove and reposition form , and then continue to ram mix into form until desired height of wall is reached . On top of wall you place a ledger and build a roof out of wood to be covered with shingles , tin or roofing straw for a thached roof , or you can use sod if it doesn t rain too much .

Answer 4

I hope you are not currently taking any engineering courses without taking profession writing along with them. They flunk for grammatical mistakes today. Please rewrite your question so that others can understand what it is that you are asking and press the keys on your keyboard slowly and then re-read what you have typed. If you have dyslexia or similar or other visual concerns, have someone read for you.