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Petter Nekså

Chief Scientist

Petter Nekså

Chief Scientist

Petter Nekså
Phone: 926 06 519
Email:
Department: Gas Technology
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=1824113

Low temperature Rankine cycle is a prominent solution for power generation in Waste Heat Recovery (WHR) application. The performance of this cycle is affected by various parameters including characteristics of the heat source, working fluid and constraints in the system. In cases where the heat sour...

Authors Mina Shahrooz Per Lundqvist Petter Nekså
Year 2020
Type Academic chapter/article/Conference paper
Publication
https://www.sintef.no/en/publications/publication/?pubid=1824081

The thermal exergy contained in the liquid metal in ferroalloy production makes it an interesting source for energy recovery. The heat released during casting is rarely utilized today. This work investigates the feasibility of continuous power production from batch wise ferroalloy casting using an e...

Authors Trond Andresen Simon Johan Nilsen Lingaas Brede Hagen Petter Nekså
Year 2020
Type Academic chapter/article/Conference paper
Publication
https://www.sintef.no/en/publications/publication/?pubid=1822029

India is ranked first in milk production, and its goal is to increase annual production to 300 million tons by 2024. The dairy industry requires multi-temperature cooling and simultaneous heating. In the present study, the ejector based transcritical CO₂ system with two evaporators (LT at -10°C, MT ...

Authors Koti Dasi Simarpreet Singh A.M. Guruchethan M.P. Maiya Armin Hafner Krzysztof Banasiak Petter Nekså
Year 2020
Type Academic article
Publication
https://www.sintef.no/en/publications/publication/?pubid=1824105

The expander is one of the key components of an ORC as the cycle efficiency strongly depends on the expander efficiency. This paper presents a method for design optimization of a radial inflow turbine (RIT) using a mean-line model. The novelty of this work lies in the equation-based formulation of t...

Year 2020
Type Academic chapter/article/Conference paper
Publication
https://www.sintef.no/en/publications/publication/?pubid=1816892

Experimental evaluation of a multiejector CO2 cooling system of 33 kW cooling capacity is conducted for an Indian supermarket at high ambient temperature context. The test-rig is designed to depict the actual supermarket cooling requirements in India with three different cooling temperature levels s...

Authors Simarpreet Singh Prakash Maiya Armin Hafner Krzysztof Banasiak Petter Nekså
Year 2020
Type Academic article
Publication
https://www.sintef.no/en/publications/publication/?pubid=1815475

The dry ice sublimation process of CO2 is a unique technique in which temperature ranges below the triple point of −56 °C can be achieved in a CO2 refrigeration system. However, during the evaporation process of the actual refrigeration system, the dry-ice blockage maybe happens in the evaporator, w...

Authors Haruhiko Yamasaki Hiroshi Yamaguchi Ônder Kizilkan Takeshi Kamimura Kazuhiro Hattori Petter Nekså
Year 2020
Type Academic article
Publication
https://www.sintef.no/en/publications/publication/?pubid=1824107

Off-gas from the metal industry is a significant surplus heat source that is often not utilized due to lack of internal and external heat demands. Power production from the surplus heat in the off-gas could be a promising option for utilization. This work considers an off-gas at 150 °C from a metall...

Year 2020
Type Academic chapter/article/Conference paper
Publication
https://www.sintef.no/en/publications/publication/?pubid=1826639

A cylindrical cooled probe (cold-finger placed in cross-flow) has been used to investigate fouling in the off-gas duct located upstream from the gas cleaning system during primary aluminium production. Hard scale was formed on the front side of the probe whereas loose deposits accumulated on the rea...

Authors Daniel Perez Clos Sverre Gullikstad Johnsen Petter Nekså Ragnhild Elizabeth Aune
Year 2020
Type Academic chapter/article/Conference paper