Steady state
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 steady-state as a: ‘State where conditions are assumed to be constant, i.e. not changing over time. Steady-state calculations do not take account of changes over time: they analyse a system under fixed conditions. On the other hand, transient calculations take account of changes in the system over time, such as oscillations in temperature.’
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