- Industry: 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.
Natural gas provided by a utility to a governmental body, in a particular municipality, in exchange for franchise rights in that municipality.
Industry:Energy
The ANSI Z132 has established 60oF and 14.73 psia as the base temperature and pressure to which all volumes are commonly referred.
Industry:Energy
Time rate of heat flow through a unit area and unit thickness of a homogeneous material under steady conditions when a unit temperature gradient is maintained in the direction perpendicular to area, expressed in Btu per hour per square foot of surface, per foot or inch of thickness, per degree Fahrenheit temperature difference across the thickness. Materials are considered homogeneous when the value of the thermal conductivity is not affected by variation in thickness or the size of the sample within the range normally used in construction.
Industry:Energy
Difference in pressure between any two points in a continuous system. Compare PRESSURE DROP.
Industry:Energy
Natural gas reserves dedicated to the fulfillment of gas purchase contracts.
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
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
A gas containing relatively large amounts of unsaturated and/or heavy hydrocarbon gases which burn with a luminous flame.
Industry:Energy
