Value chain requirements & specifications.
The collection of value chain requirements and specifications was carried out at the beginning of the project using the following categories: hygrothermal performance, energy performance, fire performance, sound performance
Development of elements composing the system: Methodology and design
The E2VENT module embeds two distinct active systems. The SMHRU is aheat recovery unit that allows the air renewal while limiting the thermal losses; the LHTES based on phase change materials provides a heat storage system that can be used for cooling peak shaving. Those two systems are piloted by a Buildiing Energy Management System. The designs of SMHRU and LHTES are visible in the following illustrations.
Fig1: Illustration of the SMHRU integration in the wall
Fig2: Illustration of the LHTEs integration in the wall and its functioning modes
Both heat exchangers are integrated in a box manufactured by ELVAL. The efficiency of the systems relies on the convective thermal exchange obtained but also on the energy consumption of fans and the robustness of the system. The prices of each components are evaluated and an equilibrium between costs and efficiency is discussed.
Prototypes, measurements and testings on a test bench
Once manufactured the prototypes were shipped, assembled and installed on the test bench in Nobatek's premises. The correct functioning of the two piloted systems was tested, validating the piloting rules. Then acoustic, IR measurements, piloting modes were assessed.
Fig 3: Pictures of the SMHRU (left); LHTES partially assembled (center) and the 3 types of PCM encapsulation (right)
Fig 4: Picture of the SMHRU, LHTES and BEMS on the test bench.
Pilots
The baseline for the two buildings as demo cases was first measured. Then the overall design of the renovations were proposed. Due to the absence of cooling needs, no LHTES was installed in Gdansk.
The installation was successfull on both sites at the end of 2017, and the commissioning and monitoring showed the benefice of the E2VENT module in reducing the energy consumption of the buildings while improving the internal confort.
Fig5: Pictures of the renovation in Burgos
Fig6: Pictures of the renovation in Gdansk
Exploitation and dissemination
The Key Exploitation Results have been defined and assessed regarding their market potential. For public dissemination, 2 websites are online - one focusing on the project and one on the product providing all necessary information. Regarding scientific dissemination, 7 articles in peer reviewed journals have been published, and participation in conferences, fairs, workshops were numerous.
