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Petter Nekså

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Petter Nekså

Sjefforsker

Petter Nekså
Telefon: 926 06 519
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Avdeling: Gassteknologi
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Daniel Perez Clos Sverre Gullikstad Johnsen Petter Nekså Ragnhild Elizabeth Aune
År 2020
Type Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Trond Andresen Simon Johan Nilsen Lingaas Brede Hagen Petter Nekså
År 2020
Type Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Brede Hagen Matteo Cavo Trond Andresen Petter Nekså
År 2020
Type Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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 ...

Forfattere Koti Dasi Simarpreet Singh A.M. Guruchethan M.P. Maiya Armin Hafner Krzysztof Banasiak Petter Nekså
År 2020
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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...

År 2020
Type Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Mina Shahrooz Per Lundqvist Petter Nekså
År 2020
Type Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=1840573

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 findi...

År 2020
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Simarpreet Singh Prakash Maiya Armin Hafner Krzysztof Banasiak Petter Nekså
År 2020
Type Vitenskapelig artikkel
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Haruhiko Yamasaki Hiroshi Yamaguchi Ônder Kizilkan Takeshi Kamimura Kazuhiro Hattori Petter Nekså
År 2020
Type Vitenskapelig artikkel