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- Zero Gas
- Gas at atmospheric pressure.
- Zero Gas Governor
- See GOVERNOR, ZERO GAS.
- Zero, Absolute
- See ABSOLUTE ZERO.
- Zinc Oxide
- An infusible white solid used in preparation of synthetic natural gas to absorb sulfur from naphtha.
- Zone
- A geographical area. A geological zone, however, means an interval of strata of the geologic column that has distinguishing characteristics from surrounding strata.
- Zone
- A geographical area. A geological zone, however, means an interval of strata of the geologic column that has distinguishing characteristics from surrounding strata. Also, a space or group of spaces within a building with heating and/or cooling requirements sufficiently similar so that comfort conditions can be maintained by a single controlling device.
- Zone Heat
- A central heating and/or cooling system which is arranged so that different temperatures can be maintained in two or more areas of the building being heated or cooled or simultaneously heated or cooled.
- Zone Rate
- See RATE, ZONES.
- Zone, Storage
- See STORAGE, UNDERGROUND.
- Zone-Gate Method
- A method of developing zoned rates. This method involves first segregating costs by zone as if each zone were a separate entity, then developing the unit costs of gas flowing through each zone. The customers in downstream zones pay the costs associated with their gas flowing through the upstream zones.