Energy, Work, and PowerLAW OF CONSERVATION OF ENERGYRev. 0Page 7CP-05Conservation of Energy Summary+Energy cannot be created or destroyed, only altered in form.+Simplified energy balance:KE + PE + E= KE + PE + E1 1 added 2 2 removedTo further describe each of the components of the above equation, each component can bebroken down as follows:Energy= KE + PEinitial 1 1Energy= Work done on and heat added to the systemaddedEnergy= Work done by and heat removed from the systemremovedEnergy= KE + PEfinal 2 2The resulting energy balance is provided in Equation 5-5.KE + PE + E- E= KE + PE(5-5)1 1 added removed 2 2Neglecting any heat removed or added to a system, we can replace E and E inadded removedEquation 5-5 with their associated work terms to obtain Equation 5-6.KE + PE + W = KE + PE + W(5-6)1 1 on 2 2 byThe final energy balance is called a "simplified energy balance." Any energy balance is astatement of the Law of Conservation of Energy. In this simplified form, the balance appliesonly to mechanical problems, since we neglected heat. However, more specific energy balancesthat include heat will be discussed in other Fundamental Manuals. For example, specific energybalances for flow systems will be discussed in the Heat Transfer, Fluid Flow, andThermodynamics modules.SummaryThe law of conservation of energy is summarized below.

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