Blar i Institutt for arkitektur og teknologi på forfatter "Madsen, Henrik"

Viser treff 1-7 av 7

    • Assessment of GHG emissions from materials during building design - Methods for improved reliability and quality 

      Resch, Eirik (Doctoral theses at NTNU;2021:15, Doctoral thesis, 2021)
      Construction materials in buildings contribute significantly to climate change. Globally, nations have committed to drastic reductions of greenhouse gases (GHG), among them Norway which has committed to 50-55% reduction ...

    • Carbon dioxide-based occupancy estimation using stochastic differential equations 

      Wolf, Sebastian; Cali, Davide; Krogstie, John; Madsen, Henrik (Peer reviewed; Journal article, 2019)
      In the existing building stock, heating, cooling and ventilation usually run on fixed schedules, in many cases, even all day. In particular, ventilation systems often run with a constant air flow rate that is adjusted based ...

    • climify.org: an online solution for easy control and monitoring of the indoor environment 

      Cali, Davide; Kindler, Ekkart; Ebrahimy, Razgar; Bacher, Peder; Hu, Kevin; Østrup, Michelle Lind; Bachalarz, Magnus; Madsen, Henrik (Journal article; Peer reviewed, 2019)
      Real energy performance of new and retrofitted buildings often consistently differs from expectations. While occupants might complain about poor indoor climate, the energy use in such buildings is often higher than expected, ...

    • CO2-based grey-box model to estimate airflow rate and room occupancy 

      Wolf, Sebastian; Alonso, Maria Justo; Cali, Davide; Krogstie, John; Mathisen, Hans Martin; Madsen, Henrik (Journal article; Peer reviewed, 2019)
      In the existing building stock, heating, cooling and ventilation often run on fixed schedules assuming maximal occupancy. However, fitting the control of the HVAC system to the building’s real demand offers large potential ...

    • Control of Heat Pumps with CO2 Emission Intensity Forecasts 

      Leerbeck, Kenneth; Bacher, Peder; Junker, Rune Grønborg; Tveit, Anna; Corradi, Olivier; Madsen, Henrik; Ebrahimy, Razgar (Peer reviewed; Journal article, 2020)
      An optimized heat pump control for building heating was developed for minimizing CO 2 emissions from related electrical power generation. The control is using weather and CO 2 emission forecasts as inputs to a Model ...

    • A Markov-Switching model for building occupant activity estimation 

      Wolf, Sebastian; Møller, Jan; Bitsch, Magnus Alexander; Krogstie, John; Madsen, Henrik (Peer reviewed; Journal article, 2019)
      Heating and ventilation strategies in buildings can be improved significantly if information about the current presence and activity level of the occupants is taken into account. Therefore, there is a high demand for ...

    • Room-level occupancy simulation model for private households 

      Wolf, Sebastian; Cali, Davide; Alonso, Maria Justo; Li, Rongling; Korsholm Andersen, Rune; Krogstie, John; Madsen, Henrik (Journal article; Peer reviewed, 2019)
      This work presents a novel occupancy simulation model for residential buildings. The main contribution is that occupancy is simulated at room level, as opposed to more course spatial resolutions in previous studies. The ...