Recap: Excursion Hermitage & Hortus

Last Thursday, fifteen Mollier members went on an excursion to the Hermitage in Amsterdam. After spending some time in traffic, we arrived at the Hermitage. With some coffee, tea and cookies we got a warm welcome by Wouter Flach of Kuijpers in one of the presentation rooms.

Sebastiaan Lagendaal, head of Facilities and Safety at the Hermitage, told us about the project “Tussen Kunst en Kas”, meaning “between art and greenhouse”. In this project, they connected the Hermitage to the Hortus Botanicus. He explained us that an ATES was installed in the Hermitage. This is an Aquifer Thermal Energy Storage and it is used to store energy underground in the form of warm or cold water. However the ATES installation of the Hermitage had a heat surplus. For this, a solution had to be found, which came from the botanical garden Hortus Botanicus. The greenhouses of the botanical garden require a lot of heat and the used installations were pretty old and needed renovation. It took some time and a lot of effort, but eventually 450 meter long pipes were placed between the two sites. The heat surplus of the Hermitage is now being transported at 16-17 degrees Celsius to the Hortus, where the temperature is being raised by a heat pump to 55 degrees Celsius. The resulting cool water from the Hortus is being returned to the Hermitage to cool the exhibition halls. This way both sites profit of the arrangement.

After hearing the process of making this all possible, we got a tour around the project. First we walked through the attic of the Hermitage and could see the ducts of the exhibition rooms towards the installation room, where the real art happens. As it takes some time for an ATES system to run fully optimized, we could see that they were still busy adjusting the systems to make sure it is as energy efficient as possible. We then walked towards the Hortus, following the same route as the pipes that connected both sites. Here we could the see the installation used for heating the water and delivering it to the greenhouses, together with the back-up heating system. Back at the Hermitage we had a delicious lunch, after which everyone could go their own way.

We would like to thank Kuijpers and the Hermitage for showing us this interesting and daring project.

Excursion Kuijpers: Amsterdam

In collaboration with Kuijpers, Mollier is organizing an excursion to Amsterdam on the 7th of December. We will visit the Hermitage and the Hortus, two buildings that are connected by a thermal storage system. The Hermitage was renovated by Kuijpers in 2009. The building needed more cooling than heating, so the excess heat is deployed in the Hortus, a botanical garden that needs a lot of heat to maintain the subtropical climate. Because of the 400 meter distance between these two buildings, this is a very interesting project. The control system is extraordinary as well, because the two climates are so different from each other but they are both controlled by the same system.

For more information about the program and to sign up, visit this page.

Recap Excursion Peutz Laboratory

Thursday the 23th of March Mollier is invited at Peutz to visit their laboratories in Molenhoek near the German border. After a train ride of one and a half hour, the group of 15 people found itself at an abandoned train station in the middle of nowhere. A 5 minutes’ walk from Peutz’ experimental area. At arrival a luxurious tea table was waiting for the participants, which was arranged very well. The afternoon started with a short introduction of the director, Casper Esmeijer, and three additional presentations about Peutz, the laboratory and work within the company. The first presentation was given by Albert Alders. The presentation took us along the many projects within the different disciplines, Peutz is invested in. The last two presentations were about working within the company. One of these presentations was given by an alumnus of Mollier, Manon Derks. Which was interested because of her insight in Peutz and the link with our master.

After the presentations we had a small break, which was followed by the visitation of the laboratories. We visited two climate chambers, three interconnected rooms for acoustical measurements, an anechoic chamber, the model room with different scale models for acoustical measurements, the pyrotechnic oven, the fire safety laboratory and the wind tunnel.

We want to thank Vera van der Berg for this interesting opportunity, to get insight in the company and facilities. We also want to thank everybody who presented and took us on the tour through the facilities. We had a great afternoon!



Peutz is a group of independent consultants specialised in a wide range of fields related to the design and building of any type of architectural or industrial development. Specialities range from acoustics, building physics and physics of urban design, noise control, and environmental technology to fire safety, sustainability and the optimisation of working conditions.

Peutz also operates laboratories for specific fields in building physics such as: acoustics, building physics, wind technology and fire safety. These laboratories are used for specific project-related research as well as fundamental research studies.

In case you didn’t notice, acoustics, building physics, wind technology and fire safety are all part of our expertise. This is why Mollier is invited to visit four of the laboratories in Molenhoek!


When: 23rd of March, 13:30 ~ 17:00 (excluding travel time)

Where: Molenhoek

More information:


Sign up at:

Excursion Peutz laboratory

Excursion Doornroosje: CHEOPS x Mollier

The excursion last friday was very interesting,! Together with CHEOPS, Studievereniging Bouwkunde we have organised a trip to one of Netherlands` most interesting music venues. One of the main goals of the trip is to introduce bachelor students to the world of building physics in practice and show them where architecture meets building physics. The 28 participants of the excursion was a perfect blend of bachelor students and BPS master students. Thank you all very much for joining us!

The 21st board would like to thank CHEOPS for this amazing collaboration. We are also very thankful for the very interesting, passionate and educational presentations by Jan Decker from AGS Architekten & Planners BV and Maarten Luykx from Peutz. At last but not least we would like to thank Toine Tax from Doornroosje for having us over and making this excursion possible.

We have a lot of activities coming up in the coming weeks, watch this space for more info soon. We hope to see you there!


Excursion Doornroosje

Mollier and CHEOPS are joining forces! Acoustics, architecture, urbanism, management and building physics and services come together in the new building of Doornroosje, the music venue of Nijmegen. Join us on this awesome trip, including presentations by professionals, a guided tour and lunch! Sign up at Mollier or the CHEOPS desk!

There is a small fee for this excursion: €3,-

You can sign up for the excursion here.

*Note to our international members who are interested, our apologies, but this event is in Dutch*

Mollier goes Beyond Technology! JPV Business Festival

TVVL banner 20 jan


*Note to non-dutch speaking Mollier members, this event is in Dutch.

YoungTVVL organiseert weer het jaarlijkse business festival op vrijdag 20 Januari. Mollier is vaker op dit event geweest en ervaren als zeer interessant.

Op dit event zullen allerlei interessante bedrijven zichzelf presenteren en zullen er ook keynotespeakers hun verhaal doen. Er is ook veel plek om te netwerken met bedrijven. JPV Festival is de ontmoetingsplek voor jonge professionals die zich interesseren in alles wat te maken heeft met ‘de gebouwde omgeving’.

Toegang tot JPVF17 is gratis voor onze Mollier-leden als ze lid worden bij TVVL  (let wel op de annuleringsvoorwaarden voor no-show, de ticket zijn op naam!). Voor meer informatie en het programma zie de website van Jong Professionals Verenigd.

Zorg dat je voor dinsdag 10 januari de lidmaatschap hebt aangevraagd als je nog geen lid bent van TVVL. Geef het aan Diyako door als dit nog niet zo is!

Login en meld je aan op de event pagina:

Young TVVL Business Festival: Beyond Technology

Heijmans Excursion

Last Thursday a group of students of Mollier went to Schiedam towards the new land tunnel of the A4. This excursion was organized by Heijmans. The day started with a general presentation about Heijmans provided by HR manager Floris van Koningsbruggen. He was followed by John Voeten, manager of Heijmans Installation, who presented the design of the tunnel and the bottlenecks they were facing. The excursion ended with a tour around the construction site with a retired employee of the ministry of infrastructure and environment.


Foamglas excursion

On October 9th a group of Mollier members went on a excursion to the Foamglas insulation factory in Belgium. Foamglas is a producer of cellular glass insulation for high performance, durable & ecologically sustainable thermal insulation in building applications. The day started with a presentation about the company, their history and of course the insulation material Foamglas. The presentation was followed by a tour through the factory with a complete view of the production proces from the delivery of recycled glass till customizing the insulation blocks. The tour continued with demonstration of the application of the insulation material.  The last stop of the tour was a visit to the laboratory where Foamglas insulation is tested under different conditions. After the tour a luxury belgian lunch was served.

Successful meeting with ‘Kuijpers installaties’

On September 25th a group of 14 Mollier members went to Zeist for a meeting organized by ‘Kuijpers Installaties’. Kuijpers’ ambition is to build all installations from 2018 energy neutral and healthy. First the ‘strategy plan’ was introduced by an animation video. Then Marjan Minnesma gave an interesting and inspiring presentation about the agenda made by her foundation, Urgenda. The title of this agenda is ‘The Netherlands: 100% renewable energy in 2030. It’s possible if you want it’.