• Biogas purification using membrane micro-aeration: A mass transfer analysis 

      Bakke, Rune; Perera, Degurunnehalage Wathsala U.; Botheju, Paranavidanelage Deshai (Journal article; Peer reviewed, 2014)
      When sulfur containing organic feedstocks undergo anaerobic digestion, sulfides are formed due to the biological activities of sulfur reducing bacteria. Presence of hydrogen sulfide (H2S) negatively affects the usage of ...
    • Comparison of space heating energy consumption of residential buildings based on traditional and model-based techniques 

      Perera, Degurunnehalage Wathsala U.; Skeie, Nils-Olav (Journal article; Peer reviewed, 2017)
    • Control of temperature and energy consumption in buildings - a review. 

      Pfeiffer, Carlos Fernando; Skeie, Nils-Olav; Perera, Degurunnehalage Wathsala U. (Journal article; Peer reviewed, 2014)
      Building sector is one of the largest energy consumers in the world and currently it utilizes 40% of the total energy in the European Union. At the beginning of the article, energy crisis related to the buildings is defined ...
    • Estimation of the heating time of small-scale buildings using dynamic models 

      Perera, Degurunnehalage Wathsala U.; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)
      Most buildings are not continuously occupied, such as office buildings, schools, churches and many residential buildings. Maintaining comfortable conditions only during the occupied periods reduces the energy costs. This ...
    • Modeling and Simulation of A Multi-Zone Building for Better Control 

      Perera, Degurunnehalage Wathsala U.; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Conference object; Peer reviewed, 2014-12-09)
      Buildings are one of the largest energy consumers in most of the countries. Building sector in the European Union (EU) is continuously expanding and currently utilizes 40% of total energy consumption in the union. Out of ...
    • Modeling and Simulation of Multi-Room Buildings 

      Perera, Degurunnehalage Wathsala U.; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)
      Buildings are one of the largest energy consumers in the world which accounts for nearly 40% of the total global energy consumption. In the countries where cold climate conditions predominate, space heating is the key ...
    • Modelling the heat dynamics of a residential building unit: Application to Norwegian buildings. 

      Perera, Degurunnehalage Wathsala U.; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Journal article; Peer reviewed, 2014)
      The paper refers to the development of a continuous time mathematical heating model for a building unit based on the rst principles. The model is described in terms of the state space variables, and a lumped parameter ...
    • Parameter estimation for grey-box models of building thermal behaviour 

      Brastein, Ole Magnus; Perera, Degurunnehalage Wathsala U.; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Journal article; Peer reviewed, 2018)
      Good models for building thermal behaviour are an important part of developing building energy management systems that are capable of reducing energy consumption for space heating through model predictive control. A popular ...
    • Structural observability analysis and EKF based parameter estimation of building heating models 

      Perera, Degurunnehalage Wathsala U.; Perera, M. Anushka S.; Pfeiffer, Carlos Fernando; Skeie, Nils-Olav (Journal article; Peer reviewed, 2016)
      Research for enhanced energy-efficient buildings has been given much recognition in the recent years owing to their high energy consumptions. Increasing energy needs can be precisely controlled by practicing advanced ...