Case studies – Climate

Going analogue in a digital world

In the autumn of 2015, Polygon was contacted by the American embassy in Oslo, Norway. They were planning new construction in their enclosed area. As a result of the rigorous security regulations at the embassy, the client had several rather unusual requirements for how the work would be carried out. For example, no digital equipment was permitted.

A real challenge! Instead of using the digital equipment our technicians normally rely on, we were forced to calculate the old-fashioned way. And instead of monitoring humidity digitally, we had to use analogue instruments that continuously measure air temperature and humidity. Recording was made graphically on a roll of paper! Furthermore, these thermo-hydrographs had to be adapted manually to equip them for use in this specific assignment.

To avoid moisture damage to furniture, flooring and other materials, the Embassy wanted to maintain a relative air humidity of between 35 and 40 percent throughout the construction process. After careful calculations, our Polygon engineers came to the conclusion that they would need 50 condensation dehumidifiers and eight thermo-hydrographs to achieve the desired results.

Fortunately, it turned out that the team had reckoned accurately. When the construction project was completed just over three months later, they could proudly say that they had succeeded in keeping the humidity at the desired levels, twenty four hours a day, throughout the entire construction period. The client was satisfied and highly impressed by Polygon’s flexibility.