revision preference src: Re-using waste heat requires the amount of heat and temperature levels of the waste to match that of the heat needed. Using waste heat requires changing the pressure inside evaporators and condensers of the distillation system in order to control the temperatures needed. <SEP> tgt: Re-using waste heat requires the amount of heat and temperature levels of the waste to match that of the heat needed. Thus, using waste heat requires changing the pressure inside evaporators and condensers of the distillation system in order to control the temperatures needed.