The project involves fitting professional kitchen extractor hoods with heat recovery systems on the exhaust air fan. This recovery can be performed in three different ways:
via an air-to-air recuperator integrated into the hood which propels the preheated air into the kitchen (integrated compensation).
via a separate air-to-air recuperator which also allows the make-up air to be preheated through a plate heat exchanger.
via an air/water heat recovery unit to pre-heat domestic hot water
The company will be able to save an estimated 70-100% on heating consumption in the kitchen, and around 50% on domestic hot water production, by installing this technology, which has been on the market for over 5 years. However, implementing this measure can be complex with a medium-to-long-term return on investment, and requires the temporary shutdown of production during the technical installation stage.
Adjustment of air exchange flow rates to actual needs using a CO2 sensor
The project aims to install one or more CO2 sensors on the air intake of air handling units (AHUs) in supermarkets and to adjust the flow rate of new air introduced into the shopping centre as needed. This way, the airflow is increased during busy periods and reduced the rest of the time.
Air handling units ensure the air exchange and heating/cooling of the commercial premises. The AHUs operate at a fixed flow rate over time slots programmed according to opening hours.
By installing this technology, which has been available on the market for more than 5 years, the company can achieve significant savings on its electricity bills and reduce its carbon footprint. This measure is relatively simple to implement, has a quick return on investment and does not require production shutdown during the technical installation.
Implementation of a variable speed system on dust or fumes extractor fans
The project consists in setting up a speed regulation system on the extractor fan, activated by the machines in operation which actually require the extraction of sawdust or fumes. It involves the addition of valves and a speed variator on the extractor fan. The valves open only when the machine is operating and the fan flow rate adjusts according to the pressure.
Installing this technology, which has been available on the market for more than 5 years, the company can save significantly, up to 50%, on its electricity bills (depending on the baseline production regime) and reduce its carbon footprint. This measure is quite simple to implement, can show a rapid return on investment, and does not require a production shutdown during installation.
The use of articulated arms to extract dust and fumes is a system that optimises dust collection.
Dedicated profiled nozzles must be placed as close as possible to the points generating dust or fumes.
It is necessary to set up a heat recovery system on the extracted air flows with air reinjection to balance the pressures.
By installing these technologies, which have been available on the market for over 5 years, companies can save up to 20% on electricity costs and reduce their carbon footprint. This measure is quite simple to implement and would entail a medium-to-long term return on investment. However, this measure requires a production shutdown during installation.
Unclogging of dust filters using a differential pressure sensor rather than a timer
Most filter unclogging installations are equipped with a timer which injects compressed air against the flow to remove the sawdust. However, this practice is energy-intensive and does not work if the filters are clogged. Instead of ordering filter unclogging, it would be better to install pressure sensors upstream and downstream of the filters. The operation entails controlling filter unclogging by differential pressure sensor (pressure difference upstream and downstream of each filter), i.e. only when the filter bags are saturated with sawdust and when unclogging is really necessary.
The use of this technology, which has been on the market for over 5 years, can save businesses up to 5% in electricity costs and reduce their carbon footprint. This measure is quite simple to implement, can show a rapid return on investment, and does not require a production shutdown during installation.
The project consists in controlling the quantity of exchanged air required in an oven, by installing a speed variator on the exhaust fan controlled by an O2 sensor and a humidity sensor.
By installing this new technology, the company may save up to 20% on gas or fuel oil consumption and also reduce its carbon footprint by around 20%. This measure is rather difficult to implement, has a quick return on investment, but requires a production shutdown during installation.
Replacement of a traditional oven with a multi-level oven (baking ovens)
The project consists in replacing a conventional oven that does not allow to bake different products simultaneously with a multi-level oven that optimises the capacity of the oven, thus reducing its operating time for the same production.
Installing this technology, which has been available on the market for more than 5 years, will allow the company to save up to 10% on its electricity consumption as well as somewhat reduce its carbon footprint. While the cost of energy alone cannot justify this measure, it allows greater flexibility and potentially an optimisation of baking time and therefore an increase in yield. This measure is not easy to implement and requires a production shutdown during installation.
Company halls and workshops, often characterised by large open spaces and high ceilings, present a particular challenge when it comes to installing an energy-efficient, targeted heating system. The ideal heating system for halls must therefore be able to heat the different work areas individually and produce heat at the right height.
Halls and workshops have specific heating requirements due to their size and use. It is therefore essential to carry out a thorough requirements analysis before installing a new heating system.
Controlling good ventilation and the operating costs associated with your company’s centralised ventilation system
The main function of a ventilation system is to ensure a pleasant climate and high air quality within the establishment. This need is associated with energy consumption (generally in continuous service) and must be used in the best possible way.
Optimising your company’s centralised ventilation system
To ensure that the ventilation system is working properly and monitor the financial impact, regular analysis of requirements and technological monitoring are necessary. In the detailed description below, you can find the analysis to be applied in the case of ventilation renewal.
As a first step, we strongly advise you to carry out a detailed analysis of your company’s current ventilation situation and requirements, and to anticipate possible changes in requirements in the future (building project, change of use of certain rooms, etc.)
On the basis of this analysis, the new ventilation system can be sized.
