| Term | Definition |
|---|---|
| WET RETURN |
The portion of the return piping below the water line of the boiler. |
| WET STEAM |
Steam at saturation temperature in the presence of moisture. |
| WET WELL |
A compartment or tank in which wastewater is collected. The suction pipe of a pump may be connected to the wet well or a submersible pump may be located in the wet well. |
| WET WELL LIFT STATION |
A lift station in which there is a single tank. Pumps can be installed in a wet well lift station in either a suction lift or suction head condition. |
| WET-BULB TEMPERATURE |
Equilibrium temperature of water evaporating into air when the sensible heat of the air supplies the latent heat of vaporization. |
| WHITE LIQUOR |
A chemical compound of sodium sulphide and sodium hydroxide, used for breaking down the lignin in wood. |
| WHMIS |
Workplace Hazardous Material Information System. |
| WHMIS LABELS |
The essential information that a person needs in order to handle a particular product safely. |
| WIDE AREA NETWORK (WAN) |
A communication network that connects large numbers of nodes over long-distance communications links, i.e. common carrier telephone lines |
| WINDBOX |
The pressurized ductwork or chamber that supplies combustion air to the burner(s). |
| WORD PROCESSOR |
Computer software either specially designed for or capable of word processing, including text formatting. |
| WORKING FLUIDS |
The substance which does the work in a heat engine; i.e., air is one of the working fluids used with gas turbines, refrigerant is the working fluid in refrigeration. |
| WORT |
The aqueous extract made by slowly cooking the mash of malted grains and pure water during brewing. |
| WROUGHT IRON |
Relatively pure iron produced by puddling pig iron. |