2017: public's choice
Kirchberg: Replacement of refrigeration system
Replacing a system can in principle be a simple project. Particularly when the system to be replaced has been in operation since the 1970s. Rather than simply installing a newer model in the same spot, however, this project in Kirchberg was approached carefully and with a great deal of forward planning. First of all, the project team formulated comprehensive requirements for the new solution. “The project aims for cost-effectiveness with a healthy dose of sustainability”, says Kurt Loosli, Head of Technology in Kirchberg.
The optimal solution was identified as part of a master’s thesis that combined in-house knowledge with targeted application of the very latest findings. One particular area of focus was finding the best way to integrate the system into upstream and downstream processes and make use of waste heat.
The data now clearly show that while the like-for-like replacement of an old system with a modern one certainly brings something, the real savings potential lies elsewhere. The new system saves 265 megawatt hours of electricity per year, reducing CO2 emissions by some 40 tonnes and saving around CHF 35,000. However, use of the waste heat generates 3,600 megawatt hours of energy, saving 780 tonnes of CO2 and CHF 200,000.
These impressive figures perhaps also explain why this project was the favourite among Emmi’s employees. It demonstrates the value of employees who are proactive, think ahead and are prepared to go the extra mile.
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