Lufthansa Group/LSG Sky Chefs – eTemp Rollout

What the Judges Said…

“This project not only conserves 1,000,000 kilowatt hours per year, but also helps meet critical food safety requirements by focusing on the critical food temperature data. It’s a major improvement in a traditionally carbon-intensive industry.”

Lufthansa Group subsidiary LSG Sky Chefs implemented the patented refrigerator sensor eTemp in all of its North American airport catering facilities throughout 2015 and 2016. The eTemp sensors allow refrigeration systems to respond to simulated food temperature, significantly reducing the short cycling that comes from thermostats reacting to volatile air temperatures, the company says.

To implement the project, LSG ran a before and after sub-metered study to measure the actual kilowatt-hour savings that would result from the sensor upgrade. Third-party studies of eTemp have shown a reduction in energy usage ranging from 21 – 27% with an average of 23%, and a measurable food safety impact showing less product temperature fluctuation and fewer violations of 41°F, the company says.

After a rigorous measurement study process on multiple systems, LSG determined that the eTemp upgrade would meet or exceed food safety requirements and reduce kilowatt-hour consumption in their refrigeration infrastructure by over 20%, resulting in a project ROI of approximately 11.3 months.

Unlike traditional methods of reducing short cycling resulting from volatile air temperature response such as thermostat differential settings and software-based control systems, eTemp says its sensors eliminate air temperature from the control data and replace it with critical food temperature data. The company says that this increases food safety while reducing wear and tear as well as kilowatt-hour waste due to short cycling.

Lufthansa Group’s key environmental responsibility action areas are climate protection, especially through fuel efficiency, active noise protection, energy and resource management, sustainable innovation, and research and development. The Lufthansa Group aims to optimize energy and resource management. As a result of the eTemp project alone, the Lufthansa Group conserved nearly 1,000,000 kilowatt hours per year, avoiding 800 tons of carbon dioxide emissions annually.

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