Brickwork

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Brickwork

 

a system of barriers in a boiler unit that separates the firebox and gas flues from the environment. Brickwork is used in boilers that do not have all-welded, gas-tight shields. The purpose of boiler brickwork is to impart the proper direction to the flow of flue gases in the boiler unit, to reduce the heat losses to the surroundings, and to prevent suction of outside air into the gas flues in case of a rarefaction in them or leakage of the flue gases into the boiler room if the pressure in the gas flues exceeds atmospheric pressure. The outside temperature of boiler brickwork should not exceed 55°C for an air temperature of 25°C. Boiler brickwork is made of fireclay bricks, refractory concrete, or some other refractory material.

brickwork, brick masonry

References in periodicals archive ?
An entire brick wall down the side of the house fell into the pathway, largely in one piece.
She recalls how she got her hands on a tin of green paint and, for reasons she cannot remember, began to happily paint sausage shapes on the brick walls of her neighbours.
If you look at our church, three sides are stone as it should be but the south side as a temporary brick wall.
Every morning, on my way to work, I pass these beautiful townhouses surrounded by a four foot brick wall that borders a development.
Bedroom two has two double glazed windows, an exposed brick wall and recessed ceiling spots.
6m-high brick wall when a section of it suddenly toppled over and pinned him against a shed.
CHALLENGE The challenge of this combination project, according to Tirmizi and Scot Campbell was to make two separate apartments feel like they were always one apartment and in this case, a brick wall split the apartments previously, so the only way to achieve a large opening to unify the two apartments was to punch through the brick wall.
WE have a long, curved brick wall surrounding our garden.
I hope that what happened at Rangers hasn't blown it apart but from an adminis-tration point of view, Scottish football has hit a brick wall.
IT'S not often that I am handed the keys to a new car and told to drive it at a brick wall.
Summary: Two men have died after a brick wall collapsed at a building site in a village.
THEY normally adorn well-tended gardens and allotments but this little sunflower has simply sprung up from a brick wall.