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Title: Thermal Energy Measurement
Author: Daniel G. Harris
Source: 1981 International School of Hydrocarbon Measurement
Year Published: 1981
Abstract: Traditionally the form of energy called natural gas has been purchased and sold on a quantitive or volumetric basis. The volume of gas delivered to a customer in total cubic feet at some reference condition was determined and a bill issued at a cost per cubic foot. This concept is acceptable providing all natural gas is of the same quality. Since gas is a form of energy, each unit of volume has a certain amount of available heat. Therefore, since energy is what we are purchasing or selling, the energy content or heating value per cubic foot should be considered




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