The experience in the thermal sector has enabled TWK to develop innovative and increasingly heat-oriented projects, that the international market judges more convenient: it is the case of bivalent and shared electric units.
TWK srl produces heat-regulation groups for the production of heat through electric energy (E.E.), methane gas or gas oil. The company’s equipment is widely used in plenty of industrial sectors, from textile to wood-processing, from plasticization to chemistry, from mould sector to the food one.The experience in the thermal field has enable TWK technicians to develop projects with an optimized level of efficiency and functionality, as well as innovative projects, increasingly focusing on E.E. heating. The opening of the industrial market towards the use of E.E. to produce thermal power that is already consolidated moreover in extra European countries, has been well accepted also by many European industries, while in Italy it is not considered convenient. Over the last few year, with the advent of power production alternative solutions, it was highlighted that the restricted use of heat moved from heated fluids is much more convenient if it is produced by using EE instead of traditional fuels (Methane gas, GPL, gas oil). In some cases the possibility of a low-cost heating must be taken into account. In this situation TWK after long and detailed researches has developed the new DMX thermoregulators that offer the end user carrier fluids passing in a very short time from 300°C to 60° C with 15-20 minute cycles, with direct exchange and very low energy consumption that in this case might be produced by heating systems with traditional fuel systems or with E.E. Quite a longed-for solution is heat adjustment with heat provided by mixing systems got by means of units called Oilmix, in case diathermic oil is used or Watermix, in case it was hot water or overheated water. In both of them heat transfer occurs by means of a warmer fluid called ‘primary fluid’, heated by a centralized system that sometimes is complex bureaucratically and expensive to be developed that, when entered in the stream, through this mixing and stabilization system for temperature called ‘secondary circuit’, keeps the temperature required for use constant. Over the last few years this solution has greatly improved by applying additionally a dedicated heating element consisting of a heating body working with E.E. The system mounted onboard the machine not far from its use, is simply called ‘bivalent’ since it is equipped with two possible types of heat source: the one coming from a centralized plant and the one produced by E.E., that can be easily selected through a simple exchange operation through an electric selector. Both previously described solutions ensure a thermoregulation accuracy, a safe operation and compliance with (EN) European Regulations, that are very important for the free market. Another key step forward in TWK’s research regards the new equipment projects for fume recovery, with medium-low capacities, coming from complex technological processes that, by using the traditional carrier fluids, water or diatermic oil, are flowed hot to the used ones in the same production line. For some years TWK has developed hybrid heat recovery systems called REC, that foresee the shared use of the recovery unit with a traditional gas or electric heat source. These shared units can recover the maximum possible heat and in parallel integrate it when it is necessary, with the heat produced by E.E. or with traditional fuels.