- 産業: Energy
- Number of terms: 18218
- Number of blossaries: 1
- Company Profile:
The American Gas Association represents local energy companies that deliver natural gas throughout the United States.
That volume of gas owned by another company received into and transported through any part of the transmission or distribution system under a transportation tariff.
Industry:Energy
The maximum quantity of gas that can be moved through a pipeline system at any given time based on existing service conditions such as available horsepower, pipeline diameter(s), maintenance schedules, regional demand for natural gas, etc.
Industry:Energy
The transmission of knowledge, skills, attitudes, motivations, etc., concerning the safety requirements of operations, processes, environments, etc., to workers, supervisors, managers, and others. The objective of safety education and training is favorable behavior change.
Industry:Energy
A gas containing certain specific hydrocarbons which are gaseous under normal atmospheric conditions, but can be liquefied under moderate pressure at normal temperatures. Propane and butane are the principal examples.
Industry:Energy
A practice that pipelines are sometimes accused of employing-buying large packages of gas, and deciding later whether its marketing subsidiary bought it for system supply, or whether its marketing subsidiary bought it for resale on the spot market. Independent marketers complain that this practice gives pipelines an undue advantage in the marketplace. Pipelines counter that their pipeline sales and marketing departments are now completely separate functions.
Industry:Energy
Adiabatic (isentropic) compression takes place when there is not heat added to or removed from the system. Compression follows the formula p1V1k=p2V2k, where exponent k is the ratio of the specific heat capacities. Although an adiabatic cycle is never totally obtained in practice, it is approached typically with most positive-displacement machines and is generally the base to which they are referred. Isothermal compression takes place when the temperature is kept constant as the pressure increases, requiring continuous removal of heat generated during compression. Compression follows the formula p1V1=p2V2. However, in practice it is never possible to remove the heat of compression as rapidly as it is generated. Polytropic compression is a compromise between the two basic processes, the adiabatic and the isothermal. It is primarily applicable to dynamic continuous-flow machines such as centrifugal or axial compressors. Compression follows the formula p1V1n=p2V2n, where exponent n is experimentally determined for a particular type of machine. It may be lower or higher than the exponent k used in adiabatic cycle calculations.
Industry:Energy
Natural gas sold on an as-needed basis, without prior scheduling, to the local distribution company at FERC-approved rates. Prior to implementation of various transportation programs, this constituted all gas delivered to an LDC.
Industry:Energy
