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 ?
A Middlesbrough Council spokesman said: "The length of frontage between Units 4 and 5 is taken up, in the approved layout, by on-site parking spaces for customers to the intended shop units, with the resulting external faade consequently comprising the pedestrian entrance to the car park and a brick wall screen, which at present is blank and relatively uninteresting.
Ideally they should get rid of the brick wall altogether and put up more signs.
brick wall, Hessain cloth Ceiling with attached Kitchen including supply of all materials except
The man was suffering from chest and abdominal pain after being crushed between the rear of a van and a brick wall.
Clinical Support Officer Rob Perkins, of West Midlands Ambulance Service, who was first at the scene, said: "The car had hit the brick wall, which had metal railings on top, at speed.
Paul Gaskin, of Elmscroft Road, South Yardley, said the 3ft-high brick wall had now been partly demolished following the most recent smash, and claimed it was potentially lethal.
The best thing to do now is to put a high brick wall in, because otherwise they'll keep slashing the fence and we'll just be back to square one.
In the front of her house, behind a tall, protective brick wall that parallels the street, Berkeley sedge (Carex tumulicola) is thriving.
Furniture is positioned accommodatingly, creating diagonals that draw us into each scene, while windows carry us outside to a groomed yard in Jill and Polly in Bathroom, or up against a brick wall in Manhattan in The Son, both 1987.
It's like knocking your head up against a brick wall.
We've hit brick wall after brick wall, and it's been difficult at times, but I'm confident we're going to solve this case.
The East and South facades, facing Avenue and 55th Street respectively, consist of a glass curtain wall system "framed" by an articulated brick wall that will provide glimpses of the dance studios to the passing public, and add to the energy of the culturally vibrant Clinton District.