In Progress

Detailed Design and Fabrication Methodology for a Small Fluid Test Loop



Given the initial CAD design for a small test-loop, a detailed CAD design must be developed using the principles of parametric design where fabrication and assembly methods and procedures should be evaluated (design for manufacturing). The material to use will most likely be inconel with a Ni layer or Hastelloy-N , a high-temperature material with good response to corrosion.

The test-loop will be used to characterize different type of pumps (the pump will not be designed but an empty space will be at the pump locations and the effect of such a test pump will be simulated later on, for example pressure drop and flow rate).

The working fluid is molten-salt (i.e. liquid fluorides such as FLiBe, LiF–KF (50–50), LiF–NaF–KF (46.5–11.5–42), LiF–RbF (44–56)) or liquid metal (i.e. Na, NaK78, Li). Molten salts and liquid metals can be highly corrosive and corrosivity increases with temperature so a material is needed that can withstand corrosion at high temperatures. The fluid will operate between 450-850 C. Emphasis should be made on molten-salts as most liquid metals react exothermically in contact with air or water and so they place a safety issue.

We should highlight that fluoride salts have very low vapor pressure even at red heat, carry more heat than the same volume of water, have reasonably good heat transfer properties, do not react violently with air or water, and are inert to some common structural metals, for which they are preferred.

The CAD file should add each component used, including initial instrumentation. The instrumentation CAD files can be found at websites such as GrabCAD or at the instruments company website. If it cannot be found so some empty box should be in place which will be fulfilled in the future.

Freelancer profile

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- University degree (preferred) in engineering (mechanical, electromechanical, mechatronic, nuclear, aerospace or similar)


- University degree in applied physics


- Technician (vocational school graduate) in mechanics / electromechanics / aeronautics / electronics + 2 years university studies or industrial experience

- Advanced knowledge of computer aided design (CAD) using Autodesk Inventor, Autodesk Fusion 360 or Solidworks

- Knowledge of basic structural analysis tools (CAE)

- Knowledge of fabrication processes and basic instrumentation is a plus

- Good communication skills writing technical documents in English language

- Good preparing technical presentations



1.- Detailed CAD files (.stp files a must, native format needed as well)

2.- Rendering and snapshots showing different cross-sections and perspectives

3.- Fabrication and assembly report

4.- Structural and thermal analysis report

5.- Detailed Technical / fabrication drawings (.pdf) for all and each component

6.- Bill of materials (list of individual parts and components)

7.- Short presentation (.ppt or .pptx format) showing the different components and other information that is thought important

8.- STL file for 3D printing of a small scale model for showing at a presentation

9.- Any other document or files related to the project

*reports should be written in .doc or .docx and .pdf file formats in a professional and self-content way



14-16 days maximum



- Payment of 15% for deliverable 1

- Payment of 5% for deliverable 2

- Payment of 15% for deliverable 3

- Payment of 15% for deliverable 4

- Payment of 5% for deliverable 5

- Payment of 5% for deliverable 6

- Payment of 5% for deliverable 7

- Payment of 10% for deliverable 8

- Final payment of 25% after received and review of all deliverable and any modification needed is performed

Bonus: 10% for performance and timely delivery

Skills: CAD/CAM, Engineering, Manufacturing Design, Piping, Structural Engineering

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About the Employer:
( 35 reviews ) Grandville, United States

Project ID: #24533424