We measure what matters to you
We measure what matters to you
Operators often face questions and problems, which can not be solved with existing data. To address these needs, we develop customized solutions that range from the design of the measurement setup to construction and installation of the facilities, data processing and evaluation of results. We develop our measurement concepts according to scientific standards; this usually includes an external assessment of the results (peer review concept). Apart from providing our clients with detailed results and data, we strive to publish selected findings in scientific journals, especially if the measurement activities are funded by public authorities.
Everyone opens a refrigerator door differently
Door opening project “Nimrod”
Door openings of refrigeration units are necessary for customers to take out products. However, they have a negative impact on energy consumption, as heat and humidity enter the cooling cabinet. This aspect has not yet been considered in the development of refrigeration units as well as in control and monitoring systems.
On behalf of an operator, ChillServices evaluated a total of 32,000 door openings over a period of two months with regard to data on opening time, opening duration, opening angle and opening and closing speed. The data was generated by means of gyro sensors installed on the doors, which were sent to an online database via Bluetooth-based data loggers. All data was linked to existing contextual data, such as cabin content and cabin type, in order to obtain a meaningful analysis.
All measured data was linked to existing context data, such as product groups and cabinet types, to obtain a meaningful analysis.
The results revealed significant deviations between real opening cycles and the values established in industry standards (e.g. DIN EN ISO 23953). Moreover, differences with regard to product group, time of day and weekday were documented. Using parallelly developed CFD models and laboratory tests, the data allowed to reliably calculate and predict the moisture ingress into the cooling cabinet.
Even a closed refrigerator is not tight
Door gap project "Fram"
Gaps between doors of refrigeration units are a permanent cause for the penetration of warm and humid air. Precise information on air mass flows entering through door gaps is not available from cabinet or door manufacturers, nor are supermarket operators in possession of a database for evaluating different door systems.
On behalf of an operator, ChillServices has measured the amount of moisture produced in various refrigeration units in an active store over a period of six months. For this purpose, the condensate was collected and measured using pumps and flow sensors.
Additionally to the continuous condensate measurements, the door gaps were regularly taped (on weekends) to determine the effect of partial seals. To further investigate the impact of door openings on condensate levels, the doors were equipped with magnet-based contact sensors. The results clearly indicate the relevance of door gaps on the energetic behavior of cooling cabinets. Moreover, the most effective ways to save and optimize energy in this area could be identified.
Science for practical use
Modelling and Measurement
Refrigeration innovations and in particular the optimization of energy flows require an understanding of the devices currently used for the presentation of goods: the refrigeration units. In order to understand the behaviour and energy requirements of refrigerated cabinets, experiments under both laboratory and practical conditions are necessary.
ChillServices has set up laboratory facilities with various partners and in different constellations for the detailed investigation of air flows in refrigerated cabinets as well as measuring facilities in active supermarkets. ChillServices has extensive know-how in the areas of Computational Fluid Dynamics (CFD) modeling, energy balancing, development and adaptation of need-centered measurement technology, design and 3D printing and injection molding of necessary devices, and much more. In addition to setting up the measurement systems in real-world applications, ChillServices has created state-of-the-art data system architectures and interfaces to collect and analyze data in a reliable, fast and secure manner.
These projects with metrological challenges showed that ChillServices was able to develop solutions for complex and extensive applications.