Research student assistant - Safe use of flammable refrigerants - Hiring in process/Finished, not possible to apply

Job description

This is a risk assessment project and the purpose is to develop and improve the knowledge required for the safe use of flammable refrigerants in refrigeration and heat pump systems. The project will evaluate and quantify the refrigerant concentration around a plant in connection with unintentional emissions. In addition, the project will evaluate various available technical solutions for detecting refrigerant leakage, and also the solutions and methods to reduce the risk of occurring flammable concentrations. 

Using CFD tools:

To model and identify the ignition risks and quantify the concentrations of the leaked refrigerants in case of accidental emissions in different scenarios such as domestic heat pumps, restaurant kitchens and other commercial stores that use different types of refrigeration units. An air dispersion model should be used to determine if leaking refrigerant would reach the concentrations required for ignition in several commercial heat pump systems. The investigation of gas dispersion during unintentional emissions in different application scenarios requires careful modeling and the use of simulation tools which makes it possible to model different emission scenarios. The innovative aspect of this study is CFD-modelling of releases of refrigerants. A limited amount of studies have been performed, but the effects of the type of refrigerant, differences in density, effects of temperature of the released fluid, effects of boundary conditions in terms of air movements, room size, possible effects of fans, effects of release of inert gases to mitigate the buildup of flammable concentrations etc should be investigated.

What we offer

• A position at a leading technical university that generates knowledge and skills for a sustainable future.
• Engaged and ambitious colleagues along with a creative, international and dynamic working environment

Qualifications

Requirements

• You should be admitted to first or second-level cycle education at a  Swedish university 
•  Basic knowledge (at undergraduate level or higher) of thermodynamics and heat transfer At least 40% of full-time availability for the project within the entire employment period. Very good knowledge in English Be able to use CFD tools for modeling the safe use of flammable refrigerants. 

Preferred qualifications

• Student at KTH
• Experience and knowledge of modeling with CFD tools
• Up to 50% of full-time availability for the project during the employment period
• Independent and hard-working, organized and target-oriented
• Can take initiative and open for constructive criticism
• Very good English proficiency

Great emphasis will be placed on personal competency. 

Trade union representatives

You will find contact information to trade union representatives at KTH's webbpage.

Application

Log into KTH's recruitment system in order to apply to this position. You are responsible to ensure that your application is complete according to the instructions in the ad.

Your complete application must be received by KTH no later than the last day of application, midnight CET/CEST (Central European Time/Central European Summer Time).

About the employment 

The employment is valid for a limited time according to the agreement - for up to 6 months, with access according to agreement.

Others

Striving towards gender equality, diversity and equal conditions is both a question of quality for KTH and a given part of our values.

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Disclaimer: In case of discrepancy between the Swedish original and the English translation of the job announcement, the Swedish version takes precedence