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Mass and Energy Balances in Food Processing
Published in Susanta Kumar Das, Madhusweta Das, Fundamentals and Operations in Food Process Engineering, 2019
Susanta Kumar Das, Madhusweta Das
The basic principle of mass balance involves law of conservation of mass within a system. Thus, mass balance for any process in generalized form can be written as Inflow(inputs)=outflow(outputs)+accumulation
Air infiltration and natural ventilation
Published in Ian Beausoleil-Morrison, Fundamentals of Building Performance Simulation, 2020
The method presumes that mass flows are driven exclusively by pressure differences across openings in the building envelope or through openings connecting zones. Mass balances are formed and solved to respect the principle of the conservation of mass. Al-though the method considers the conservation of mass within the network, the conservation of momentum is not considered. This assumption implies that momentum effects are negligible, which is not true for some airflow situations.
Introduction, Reformers and Stream Energy Interchange
Published in David Pritchard, Shaik Feroz, Mass and Energy Balancing, 2021
In manufacturing, a unit process is a single component part of the end-to-end manufacturing process that transforms raw materials into finished goods. Unit processing is the basic processing in process/chemical engineering. Together with unit operations, it forms the main principle of the varied chemical industries. Each genre of unit processing follows the same chemical law much as each genre of unit operations follows the same physical law.
Primary recovery factor as a function of production rate: implications for conventional reservoirs with different drive mechanisms
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2019
Arshad Raza, Raoof Gholami, Richard Wheaton, Minou Rabiei, Vamegh Rasouli, Reza Rezaee
In this study, the material balance commercial tool (MBAL) of Petroleum Experts software was used as it provides a better understanding of the reservoir behavior and allows us to model any types of reservoir fluids. The material balance concept is based on the principle of the conservation of mass. The equations of the material balance were developed by Schilthius and equate the cumulative observed production (expressed as the underground withdrawal) to the expansion of the fluid in the reservoir, resulting from the finite pressure drop. This tool consists of an input section where fluid, rock, and reservoir properties can be imported together with a history matching and production prediction section. In the input section, the aquifer type and its properties, relative permeability curves, transmissibility parameters, history of the production and injection of the well and the reservoir can be defined. The data used in this study was chosen such that different drive mechanisms (i.e., solution gas, gas cap, weak water, and strong water in oil reservoirs together with the volumetric, weak, and strong water in the gas reservoirs (Dake 2001)) could be simulated.