Driving force
Assessing risks in insulation retrofits using hygrothermal software tools, Heat and moisture transport in internally insulated stone walls, by Joseph Little, Calina Ferraro and Beñat Arregi, published by Historic Environment Scotland in 2015, defines a driving force or driving potential as: ‘A differential within a system which forces the movement of mass or energy to allow the system to reach equilibrium. Example: a temperature differential is the driving potential which forces heat from warm areas to cold areas to establish a uniform temperature’
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