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Reference project
Final odor treatment and energy recovery in new city center nightclub
Introduction.
No resident complaints, reduced energy cost and less environmental impact
This project brings us to the heart of one of the biggest Swedish cities, where our current client runs a high-end establishment.
This former cinema from 1927 has been rebuilt and restored by Sweden’s largest entertainment group into a luxury establishment—a nightclub with fine-dining and two bars. The Italian restaurant strives to bring its “Italianness” to a new level, aiming to capture the essence of everything Italian. The establishment, in its current form, opened in early 2018.
The problem.
The plan was to lead the kitchen exhaust air from the establishment into a residential area—more specifically a courtyard next to the restaurant with apartment balconies being located just above.
Since the exhaust location had already been noticed by the residents, our client, being a top-class player in the Swedish entertainment business, was determined to eliminate the risk of complaints and negative publicity right from the start.
The solution.
To handle the odor problem, the client contacted us at Mellifiq. We were happy to help them solve their kitchen exhaust problem!
For this particular mission, we found that the perfect solution would consist of an Ozonetech RENA Kitchen Solutions system in combination with our catalytic mixed-bed filter Nodora.
First, the Ozonetech RENA ozone system continuously removes grease from the kitchen exhaust air by injecting ozone into the kitchen duct. The treated air then passes through the Nodora filter, which eliminates remaining odors and purifies the air. The hot, clean air then passes through the combined heat exchanger and exhaust fan. Thanks to the Ozonetech RENA system and the tailored Nodora solution, the need to maintain and manually clean the heat exchanger and the exhaust fan is minimized. Finally, the purified exhaust air is discharged.
Nodora is a modular system with an extremely low pressure drop (i.e. low energy consumption) relative to its treatment capacity. Nodora also exhibits a high ratio between cleaning capacity and footprint—making it suitable when purification requirements are high and space is limited.
Mellifiq delivery
Dimensions (HxWxD)
970 x 750 x 265 mm (Ozontech). 970 x 750 x 265 mm (Nodora)
Input power
1.75 kW (Ozontech)
Noise level
49 dB (Ozontech)
Pressure drop
80 Pa (Nodora)
Evaluation.
After our systems had been installed and they had tackled the first work batches, the processed kitchen exhaust was first evaluated using healthy, standard, human noses. The result was very satisfying: a completely odor-free exhaust.
To confirm the perceived results, analytical measurements were conducted, processed and analyzed in terms of overall performance and odor removal efficiency. The measurements showed an odor removal of 99.8%, at an overall pressure drop of only 80 Pa. In addition, since heat is recovered, the overall energy consumption has been reduced. Also, not to forget: due to the grease-free kitchen ducts, the risk of a duct fire is now close to zero.
RENA Kitchen Solutions
The high-performance and remotely monitored Ozonetech RENA system is oxygen-fed and liquid-cooled. This is the only way to have a stable production of large quantities of concentrated ozone over time—which in turn is the only way to continuously and automatically remove grease from kitchen ducts with an absolute minimum of maintenance and replacing parts.
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