Mixing-process heat recovery (see nr. 4 in the picture).
The mixing of rubber requires a huge effort owing to the viscosity of the material. If you have ever kneaded flour at home you should know this fact very well. The friction in the mixing process produces a considerable heat in the rubber, which must be cooled to avoid burning or deterioration. To this purpose we use the cold water from the well, which lowers the temperature of both the machinery and the rubber. This water heats up, flows into an underground tank and is finally sent to the offices as a contribution to the heating system. Its temperature at this stage is about 22°C, which is not enough to heat the rooms directly, this is why we have installed a high-efficiency heat pump. (yielding Cop. = 520%).