Glossary

actual level: This is the liquid level actually in the vessel.
adiabatic combustion: Burning fuel with no radiant heat losses.
adiabatic process: No heat lost or gained.
aeration factor: The actual density of a froth, divided by its clear liquid density.
affinity or fan laws: Relates speed of centrifugal machines to head, flow, and work.
afterburn: Reignition of flue gas in the convective section of a fired heater.
air to open: Control valves are operated by air pressure. A control valve that is opened by air pressure is air to open.
apparent level: This is the liquid level that appears in the gauge glass or is displayed on the control panel.
available NPSH: The difference between the pressure at the suction of a pump and the vapor pressure of the liquid.
barometric condenser: Condensation under vacuum by direct contact with the cooling water.
blown condensate seal: Vapor or steam flowing through the condensate outlet nozzle of a condenser.
boiler codes: Laws describing the safe design for boilers and other pressure vessels.
boiler feedwater: Water that has been softened or demineralized and deaerated.
bottom dead center: The piston position in a cylinder when it is closest to the crank shaft.
carbonic acid: Corrosive CO ₂ dissolved in water.
cavitation: Flashing of liquid in a confined space, such as a nozzle.
centipoise: The most common measure of viscosity.
centistokes: A measure of viscosity.
chain-locked open: The practice of passing a chain through a valve handle and locking it in place, to...

< Previous Excerpt

Purchase This Book

Working Guide to Process Equipment, Third Edition

TABLE OF CONTENTS

Glossary

Contact Preferences

This is embarrasing...

Customize Your GlobalSpec Experience

Select Your Free Newsletters

Industry Newsletters

Select Your Free Product Alerts

This is embarrasing...