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    Personal information
    Contact information
    Candidate Profile
     Date Submitted:20-07-2011
     Last Modified:20-07-2011 (02:18)
    Job information
     Current job:Thermal design engineer
     Employment Term:Temp/Contract
     Job location:Anywhere
     Date available:immediately
     Industry:Satellite Manufacturers and Subcontractors
     KeywordsThermal design engineer 3,5 years experience, extensive modelling with Thermica, familiar with ECSS procedures, Master's degree in mechanical engineering (cum laude), post-graduate subjects - CFD, advanced heat transfer, boundary layers, linear algebra, n

    Cover Letter


    To whom it may concern 

    I would like to express my interest for a position as thermal design engineer.

    I am currently employed as thermal design engineer at SunSpace & Information Systems (Pty.) Ltd., South Africa.

    As thermal design engineer I have done extensive thermal modelling in the Systema environment, Thermica and its solver Thermisol. This ranges from concept evaluation to full in-orbit simulation of an entire satellite with orbit manoeuvring, movement of mechanisms and internal heat dissipation.  I thus consider myself competent regarding the thermal modelling of satellite and satellite components in a space environment.

    Currently I am responsible for the correlation of in-orbit thermal data with simulated results of the Sumbandila satellite (launched on a Soyuz-2.1b rocket on 17 September 2009). This includes inter alia the entire thermal re-modeling of the Sumbandila satellite, identifying and evaluating telemetry data, generating a power flow-diagram off all major components, determining satellite attitude and operation mode for optimal thermal correlation.

    As co-author of the in-house “Guidelines for satellite system’s thermal modelling” and “Standards and procedures for satellite system’s thermal testing and reporting”, I am familiar with the ECSS documentation regarding Thermal control, Verification and Testing.

    I look forward to discuss this opportunity in person and am available for an interview at your convenience.




    Curriculum Vitae


    B. Eng (Mech.), M.Sc. Eng (Mech.) Cum Laude


    Professional experience


    SunSpace & Information Systems (Pty.) Ltd., Elektron Street 15, Stellenbosch, South Africa


    5 February 2008 – present


    Thermal design engineer


    Design of the thermal control system of satellites and other space applications. This includes:

    • simulation of satellite’s thermal behaviour in space and testing environment
    • selection and procurement of thermal control hardware
    • testing of satellite’s thermal control system and thermal control hardware

    Work done:                

    This includes:

    • Satellite and satellite components concept designs
    • Co-author of the in-house “Guidelines for satellite system’s thermal modelling” - based on ECSS
    • Co-author of the in-house “Standards and procedures for satellite system’s thermal testing and reporting” - based on ECSS
    • Currently I am responsible for the correlation of in-orbit thermal data with simulated results of the Sumbandila satellite (launched on a Soyuz-2.1b rocket on 17 September 2009). This includes inter alia the entire thermal re-modeling of Sumbandila satellite.


    GEA Air-cooled Systems (Pty.) Ltd., Aberdein Street, Roodekop, Germiston, Gauteng, South Africa.


    5 February 2007 – 31 January 2008


    Thermal design engineer


    As thermal design engineer I was responsible for the:

    • thermal design/ selection of the mechanical equipment
    • coordination of activities amongst the following parties: mechanical designer, drawing office, structural designer and project manager (internal) and the client (external)

    Work done:                

    This includes the following designs during tender phases:

    • High pressure steam condenser for an acid plant in Malawi
    • Air-cooled heat exchangers for clients in the Middle-East
    • Refurbishment of gas coolers for Saldanha Steel in South Africa
    • Multi-million Rand shell-and-tube heat exchanger set for Sappi in Durban, South Africa
    • Various heat exchangers for SASOL in Gauteng district, South Africa
    • Various heat exchangers for Alstom, Foster Wheeler, Murray and Roberts



    As thermal design engineer at SunSpace I have done extensive thermal modelling in the Systema environment, Thermica and its solver Thermisol. This ranges from concept evaluation to full in-orbit simulation of an entire satellite with orbit manoeuvring, movement of mechanisms and internal heat dissipation. I thus consider myself competent regarding the thermal modelling of satellite and satellite components in a space environment. As co-author of the in-house “Guidelines for satellite system’s thermal modelling” and “Standards and procedures for satellite system’s thermal testing and reporting”, I am familiar with the ECSS documentation regarding Thermal control, Verification and Testing.

    As thermal design engineer at GEA I interacted with international and national clients on a weekly basis, liaising between sales engineer, proposal coordinator, manufacturing, client and the rest of the engineering department. This experience honed my ability to manage complex engineering problems, work in a team environment and contributed to the further development of my people skills.

    My post graduate subjects include computational fluid mechanics, numerical methods, advanced heat transfer, industrial heat exchanger design, boundary layers and linear algebra. My computer literacy also includes FORTRAN, MathCAD®, Visual Basic®, Excel®, MS Word®, Matlab®, Mechanical Desktop®, SolidEgde®and HTRI Xchanger Suite®.

    I was privileged to have the world-renowned Prof. D.G. Kröger as co-supervisor of my M.Sc. thesis. Through his mentorship I learned that (i) complex problems should be solved in a systematic manner, (ii) resilience and patients are required to deliver quality work, (iii) always give attention to detail and (iv) understanding the fundamental laws governing an engineering problem is essential and will lead to better solutions.


    Tertiary education


    Received the degree B. Eng (Mech.) in 2005 at Stellenbosch University

    Received the degree M.Sc. Eng (Mech.) Cum Laude in 2007 at Stellenbosch University - thesis title “Evaluation of natural draught wet-cooling tower performance uncertainties”


    StellenboschUniversitymen’s residence 1strugby team, 2004/05 (Captain)

    StellenboschUniversitymen’s residence house committee member, 2003 (Treasurer)

    StellenboschUniversitymen’s residence 2ndrugby team, 2001/02 (Captain)




    Mr H. Steyn, mechanical team leader at SunSpace, jsteyn(at)

    Dr A. Zapke, general manager of engineering and contracts at GEA

    Prof. D.G. Kröger, co-supervisor of M.Sc. thesis, Stellenbosch University

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