1. A gas manometer whose calibration, which is the same for all ideal gases, can be calculated from the measurable physical constants of the instrument. 2. A manometer that measures absolute pressure.


Related Terms

BAFFLE

A plate or wall for deflecting gases or liquids.

BAG FILTER

A device containing one or more cloth bags for recovering particles from dust laden gas or air which is blown through it.

BLAST FURNACE GAS

Lean combustible by-product gas resulting from burning coke with a deficiency of air in a blast furnace.

ATMOSPHERIC BURNER

A gas burner in which all air for combustion is supplied by natural draft, the inspiriting force being created by gas velocity.

COMBUSTION RATE

The quantity of fuel fired per unit of time, as pounds of coal; per hour or cubic feet of gas per hour.

BOILER CONVECTION SECTION

The part of a furnace between the radiant section and the stack. The area is filled with tubes or pipes which carry process steam and which absorb heat via convection heat transfer from the hot gases passing through the area on their way out of the stack. The convection section forms an obstacle to the combustion gas flow and can greatly affect furnace draft in the radiant section of the furnace.

DAMPER

A device for introducing a variable resistance of regulating the volumetric flow of gas or air.

AIR DRAFT

The difference between atmospheric pressure and some lower pressure existing in the furnace or gas passages of the steam-generating unit.

DUCT

A passage for air or gas flow.

LPG

Liquefied Petroleum Gas

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