Publications and responsibilities
Norge mister 20 TWh årlig i varmetap – disse forskerne vil bruke energien i stedet
Episode 393 – Om varmetap med Petter Røkke og Petter Nekså
Liquid hydrogen as prospective energy carrier: A brief review and discussion of underlying assumptions applied in value chain analysis
In the literature, different energy carriers are proposed in future long-distance hydrogen value chains. Hydrogen can be stored and transported in different forms, e.g. as compressed dense-phase hydrogen, liquefied hydrogen and in chemically bound forms as different chemical hydrides. Recently...
Equation-oriented methods for design optimization and performance analysis of radial inflow turbines
This paper presents methods for design optimization and performance analysis of radial inflow turbines. Both methods are formulated in an equation-oriented manner and involve a single mathematical problem that is solved by an efficient, gradient-based optimization algorithm. In addition, the...
Millilardprosjekt skal gjera Barents-gass til ein del av klimaløysinga
Vi kan bruke spillvarme til å lage norske avokadofarmer
Multiejector CO2 cooling system with evaporative gascooler for a supermarket application in tropical regions
In the present study, the performance of a 33 kW multiejector trans-critical CO2 cooling system is experimentally evaluated for a supermarket application with/without internal heat exchanger and evaporative cooling. In order to enhance the overall performance of the system for tropical regions, the...
Experimental investigation of dry ice cyclone separator for ultra‐low temperature energy storage using carbon dioxide
CO2 cascade heat pump system has been developed to realize an ultra‐low temperature below the triple point of 0.518 MPa and − 56.6°C or less by flowing dry ice solid‐gas state of CO2 in a refrigeration system. Solid CO2 in the refrigeration system may cause to block the flow in the evaporation...
Large-scale production and transport of hydrogen from Norway to Europe and Japan: Value chain analysis and comparison of liquid hydrogen and ammonia as energy carriers
Low-carbon hydrogen is considered as one of the key measures to decarbonise continental Europe and Japan. Northern Norway has abundant renewable energy and natural gas resources which can be converted to low-carbon hydrogen. However, Norway is located relatively far away from these markets and...