April 26, 2021

RE 2020, Tertiary Decree: 2021, the ecological year


In France, the building sector accounts for 44% of national energy consumption and nearly 25% of CO2 emissions. New standards and regulations are moving towards greater energy efficiency.

consommation énergétique des bâtimentsconsommation énergétique des bâtiments

How can the cable and connectivity industry provide an answer to these new ecological challenges?

CAE GROUPE is sensitive to the problems of the building industry and is taking steps to reduce the environmental impact of its products in the building industry. In this respect, CAE GROUPE is working on defining and making available Product Environmental Profiles (PEP) in order to improve their environmental performance.

 

In line with this approach, CAE GROUPE is in the process of renewing its packaging with new eco-designed versions, with a "Zero Plastic" approach to reduce the proportion of non-recyclable products.

Cycle de vie d'un bâtimentCycle de vie d'un bâtiment

Green technology

If we see that new environmental constraints are aimed at a greener world and greater respect for the environment, it is important to ask how it is possible to reduce the amount of non-recyclable products. It is important to consider how energy efficiency and the carbon footprint of buildings can be improved through cabling solutions.

 

POE: a green solution

POE technology for remote powering of IP products helps to reduce the carbon footprint by minimising the number of cables. Indeed, if POE technology is used in buildings, it will reduce the number of power cables.

Furthermore, the increasing power of POE, currently 90W through 4PPOE, opens the field of possibilities in terms of applications.

Indeed, today the powers evoked by the new standard POE IEEE 802.3bt makes it possible to supply LEDs and thus to manage the lighting of the building through an infrastructure of IP cabling.

The management of the luminaire through the data cable and the POE will make it possible to bring intelligence to the lighting and therefore to considerably reduce the energy bill: presence detector, luminosity sensor adjusting the lux power according to the external luminosity etc

Cycle de vie d'un bâtimentCycle de vie d'un bâtiment

Smart building or Green Building?

The management of lighting through network cabling is one of the aspects of the smart building, this famous intelligent building which will allow through a management of services to reduce energy consumption. This is why BMS (Building Management System) should allow and go in the direction of energy efficiency in order to achieve the famous consumption reductions imposed by the new regulations. It should be noted that from 2025 onwards, BMS will become compulsory, and a decree that has been somewhat overlooked, the BACS decree, requires its installation in buildings.

The normative standards and manufacturers have well understood the environmental challenge that awaits the building world of tomorrow, and certain new standards are moving in this direction. It is important to mention the new Ethernet T1 protocol, which will allow up to 1Gbit/s to be carried over a single pair. As a result, the IS0 11801-6 standard, which is the international standard for building services, mentions this new protocol for building services management. This will therefore promote a BMS that will have to be an "open" and interoperable system as required by the BACS decree.

What about DC?

DC power is becoming increasingly popular in the building industry. It is true that today's decrees, new regulations and new "green" trends will encourage buildings to produce more and more of their energy locally. This production will be largely DC, without any conversion to AC because it will not require transport. It is therefore interesting to keep this energy source in DC so that it can be used directly in building applications. Indeed, most of the applications are powered in DC: LED, electric car, PC, audio video system, etc.  It is therefore unnecessary to convert the current to AC and then back to DC through transformers.

The absence of AC/DC conversion would allow a gain in components, cost and above all a better energy efficiency. Indeed, the absence of conversion will improve energy efficiency (by the absence of transformers which are very energy consuming) but also by eliminating the energy losses linked to this conversion.


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