CO2-heat pump water heater: characteristics, system design and experimental results P Nekså, H Rekstad, GR Zakeri, PA Schiefloe International Journal of refrigeration 21 (3), 172-179, 1998 | 542 | 1998 |
CO2 heat pump systems P Nekså International Journal of refrigeration 25 (4), 421-427, 2002 | 420 | 2002 |
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 Y Ishimoto, M Voldsund, P Nekså, S Roussanaly, D Berstad, ... International journal of hydrogen energy 45 (58), 32865-32883, 2020 | 209 | 2020 |
Low-temperature CO2 capture technologies–Applications and potential D Berstad, R Anantharaman, P Nekså International Journal of Refrigeration 36 (5), 1403-1416, 2013 | 188 | 2013 |
Review of vapour compression heat pumps for high temperature heating using natural working fluids O Bamigbetan, TM Eikevik, P Nekså, M Bantle International journal of refrigeration 80, 197-211, 2017 | 177 | 2017 |
Low-temperature CO2 removal from natural gas D Berstad, P Nekså, R Anantharaman Energy Procedia 26, 41-48, 2012 | 128 | 2012 |
Large-scale hydrogen liquefier utilising mixed-refrigerant pre-cooling DO Berstad, JH Stang, P Nekså International journal of hydrogen energy 35 (10), 4512-4523, 2010 | 128 | 2010 |
Modelling and simulation of CO2 (carbon dioxide) bottoming cycles for offshore oil and gas installations at design and off-design conditions HT Walnum, P Nekså, LO Nord, T Andresen Energy 59, 513-520, 2013 | 113 | 2013 |
Reducing the exergy destruction in the cryogenic heat exchangers of hydrogen liquefaction processes Ø Wilhelmsen, D Berstad, A Aasen, P Nekså, G Skaugen International Journal of Hydrogen Energy 43 (10), 5033-5047, 2018 | 110 | 2018 |
Comparison criteria for large-scale hydrogen liquefaction processes DO Berstad, JH Stang, P Nekså International journal of hydrogen energy 34 (3), 1560-1568, 2009 | 99 | 2009 |
Theoretical analysis of suitable fluids for high temperature heat pumps up to 125 C heat delivery O Bamigbetan, TM Eikevik, P Nekså, M Bantle, C Schlemminger International journal of refrigeration 92, 185-195, 2018 | 95 | 2018 |
Liquid hydrogen as prospective energy carrier: A brief review and discussion of underlying assumptions applied in value chain analysis D Berstad, S Gardarsdottir, S Roussanaly, M Voldsund, Y Ishimoto, ... Renewable and Sustainable Energy Reviews 154, 111772, 2022 | 77 | 2022 |
Investigation of dry ice blockage in an ultra-low temperature cascade refrigeration system using CO2 as a working fluid H Yamaguchi, XD Niu, K Sekimoto, P Nekså International Journal of refrigeration 34 (2), 466-475, 2011 | 67 | 2011 |
Experimental investigation of a prototype R-600 compressor for high temperature heat pump O Bamigbetan, TM Eikevik, P Nekså, M Bantle, C Schlemminger Energy 169, 730-738, 2019 | 58 | 2019 |
Development and analysis of a natural gas reliquefaction plant for small gas carriers P Nekså, E Brendeng, M Drescher, B Norberg Journal of Natural Gas Science and Engineering 2 (2-3), 143-149, 2010 | 58 | 2010 |
The development of a hydrocarbon high temperature heat pump for waste heat recovery O Bamigbetan, TM Eikevik, P Nekså, M Bantle, C Schlemminger Energy 173, 1141-1153, 2019 | 53 | 2019 |
Energy-efficiency technologies for reduction of offshore CO2 emissions MJ Mazzetti, P Nekså, HT Walnum, AKT Hemmingsen Oil and gas facilities 3 (01), 89-96, 2014 | 49 | 2014 |
CO2-a refrigerant from the past with prospects of being one of the main refrigerants in the future P Nekså, HT Walnum, A Hafner 9th IIR Gustav Lorentzen conference, 2-14, 2010 | 45 | 2010 |
Micro technology in heat pumping systems ST Munkejord, HS Maehlum, GR Zakeri, P Nekså, J Pettersen International Journal of Refrigeration 25 (4), 471-478, 2002 | 45 | 2002 |
High-purity H2 production with CO2 capture based on coal gasification K Jordal, R Anantharaman, TA Peters, D Berstad, J Morud, P Nekså, ... Energy 88, 9-17, 2015 | 42 | 2015 |