Transcription of 4. MATERIALAND ENERGY BALANCE
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4. MATERIALAND ENERGY BALANCE
79 Bureau of ENERGY Efficiency4. MATERIAL AND ENERGY BALANCES yllabusMaterial and ENERGY BALANCE :Facility as an ENERGY system, Methods for preparingprocess flow, Material and ENERGY BALANCE quantities, as they pass through processing operations, can be described by materialbalances. Such balances are statements on the conservation of mass. Similarly, ENERGY quanti-ties can be described by ENERGY balances, which are statements on the conservation of there is no accumulation, what goes into a process must come out. This is true for batch oper-ation. It is equally true for continuous operation over any chosen time and ENERGY balances are very important in an industry. Material balances are fun-damental to the control of processing, particularly in the control of yields of the products.
Energy balances are often complicated because forms of energy can be interconverted, for example mechanical energy to heat energy, but overall the quantities must balance. 4.2 The Sankey Diagram and its Use The Sankey diagram is very useful tool to represent an entire input and output energy flow in any energy equipment or
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