I have a passion for system design for different applications and open for any new opportunities:
- Design of the newest modern solutions for hydraulic and pneumatic systems in close collaboration with leading fluid power companies.
- Hydraulic system calculation and analysis; simulation of hydraulic process (MathCAD, Excell, Web-programming).
- Preparing of conceptual layouts/schematics of hydraulic and pneumatic systems in accordance with ISO 1219.
- Design and stress analysis of hydraulic manifolds (Creo, SolidWorks).
- Test and troubleshooting of hydraulic systems.
- Technical support for customers during the equipment installation, start-up problem troubleshoots.
More info about my background and skills you can find at my LinkedIn profile: https://www.linkedin.com/in/dzyanis
This web site is my business card and in the same time a professional blog about hydraulic and pneumatic system design. Also, I’m creating online calculators to solve some routine hydraulic calculations. In addition, I try to catch all fluid power innovations in online/press media and review the new issues of fluid power magazines to reflect most interesting articles.
Welcome to fantastic world of fluid power system design!
Please feel free to leave any comments under the posts and contact me by E-mail if you have any questions.
My latest posts
The main rule for hydraulic tank sizing is: “bigger is better”, but because there isn’t always exists a possibility to find a lot of space for tank (mostly in mobile applications) we need to know and follow min requirements for system calculation.
Just wanted to summarize all info I have for estimation of hydraulic tank volume:
|Industrial application – Mineral Oil|
|2.5 times of all pumps flow + 10% for air cushion||3..5 times of all pumps flow + 10% for air cushion|
|Industrial application – HFC/HFD|
|5 times of all pumps flow + 10% for air cushion||8 times of all pumps flow + 10% for air cushion|
|Mobile application – Open loop pumps|
|1.5..2 times of all pumps flow + 10% for air cushion||2.5 times of all pumps flow + 10% for air cushion|
|Mobile application – Close loop pumps|
|1..2 times of all CHARGE pumps flow + 10% for air cushion||1.5..2 times of all pumps flow + 10% for air cushion|
Please correct me if I’m wrong.
These calculations can help you to estimate the pressure losses, and flow velocity in the conduit (hose, pipe or tube) and check/correct conduit ID.
- The recommended flow velocity in conduits you can find at the article Recommended flow velocity.
- The assumption: pressure losses on elbows, fittings at calculated conduit is zero.
- Height difference between IN and OUT points needs to calculate hydrostatic pressure what will be added to pressure losses, if IN point is below OUT (use positive value), or subtracted from pressure losses, if IN point is upper than OUT (use negative value). Use value “0” if height difference can be neglected.
- To find Darcy friction factor there are different formulas used:
- Darcy equation – for laminar flow.
- Churchill’s all-regime (1977) – the best approximation what I found for critical and transient flow.
- Haaland’s approximation (1983) to the Colebrook–White relation – for turbulent flow.