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Reliability-centered maintenance (RCM) is a concept of maintenance planning to ensure that systems continue to do what their users require in their present operating context. [1] Successful implementation of RCM will lead to increase in cost effectiveness, reliability, machine uptime, and a greater understanding of the level of risk that the ...
For centuries before the iron crane was introduced, colonial and European fireplaces used a chain that hung from first a green wooden chimney lug pole then a fixed iron pole directly over the fire. [3] [4] [5] The chimney crane, by contrast, was bolted to the wall and was hinged in order to swing easily. Numerous pots, kettles and other items ...
A fireplace may have the following: a foundation, a hearth, a firebox, a mantel, a chimney crane (used in kitchen and laundry fireplaces), a grate, a lintel, a lintel bar, an overmantel, a damper, a smoke chamber, a throat, a flue, and a chimney filter or afterburner.
To begin the operation of the fireplace unit, the user must turn on the gas supply and ignite the burners. Once this is done, the unit will operate completely autonomously until the gas supply to the burners is shut off. While in operation, convection will cause the hot air in the firebox to rise to the top of the firebox. As the amount of hot ...
Hypocaust under the floor in a Roman villa in Vieux-la-Romaine, near Caen, France. A hypocaust (Latin: hypocaustum) is a system of central heating in a building that produces and circulates hot air below the floor of a room, and may also warm the walls with a series of pipes through which the hot air passes.
A fireplace poker (also known as a fire iron) is a short, rigid rod made of fireproof material used to adjust coal and wood fuel burning in a fireplace, and can be used to stir up a fire. A fireplace poker is usually metal and has a point at one end for pushing burning materials (or a hook for pulling/raking, or a combination) and a handle at ...
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In the case of a narrow wheel, balancing simply involves moving the center of gravity to the centre of rotation. For a system to be in complete balance both force and couple polygons should be close in order to prevent the effect of centrifugal force. It is important to design the machine parts wisely so that the unbalance is reduced up to the ...