Hamed Jafari
System Engineer Ventilation (Thermal-Fluids / System Architect R&D Group) at Airios- Claim this Profile
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English Full professional proficiency
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Dutch Elementary proficiency
Topline Score
Bio
Experience
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Airios
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Netherlands
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Appliances, Electrical, and Electronics Manufacturing
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1 - 100 Employee
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System Engineer Ventilation (Thermal-Fluids / System Architect R&D Group)
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May 2022 - Present
• Developed control philosophies for residential climate control plants with regard to temperature and humidity. • Developed control philosophies for hydraulic balances of ductwork and flow budgeting. • Designed and executed tests for proof of concept and translated raw data to usable information via analysis and reporting. • Designed PID controller for HVAC systems. • Developed control philosophies for residential climate control plants with regard to temperature and humidity. • Developed control philosophies for hydraulic balances of ductwork and flow budgeting. • Designed and executed tests for proof of concept and translated raw data to usable information via analysis and reporting. • Designed PID controller for HVAC systems.
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Senior Mechanical Engineer (Thermal-Fluids / LNG & Cryogenics)
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May 2021 - Jun 2022
• Simulated NG liquefaction cycle both using self-developed code (Excel+REFPROP) and Aspen HYSYS.• Documented Operation, Overpressure Protection, Emergency Shutdown, and Isolation philosophies under engineering principles and HAZID & HAZOP methodologies. • Designed pressure-relieving systems using API 520, API 521, API 526, and ASME Sec. VIII Div. 1 and delivered PSV Load Calculation, Relief Load Summary, and Blowdown Drum Sizing documents.• Developed 0-D (+ CFD for validation) thermal-hydraulic model for Printed Circuit Heat Exchanger analysis.• Developed 0-D thermodynamic scheme for compressors performance analysis.• Performed hydraulic calculations and delivered Pipe / Line Hydraulic documents.• Developed 1-D Shell & Tube LNG vaporizer model counting for 6 flow regimes (i.e., liquid forced convection > subcooled nucleate boiling & bubbly flow > slug flow > annular flow > mist flow > gas forced convection) containing 3 sub-models: A. Multiphase (liquid-vapor) fluid properties calculation scheme. B. Multiphase (liquid-vapor) transport properties calculation scheme. Subcooled and saturated boiling crisis (Departure from Nucleate Boiling) estimation scheme.• Performed Subcritical / Supercritical fluid property and transport property calculations for pure substances and mixtures. Show less
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Senior Mechanical Engineer (Thermal-Fluids / LNG & Cryogenics)
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May 2020 - Apr 2021
• Studied lube oil clogging in Heat Exchanger as a function of NG pressure, temperature, and composition, and oil type.• Performed hydrodynamic analysis of micro-scale particles using CFD and 0-D models.• Studied capturing mechanisms of different filters (i.e., coalescer, activated carbon and molecular sieve adsorber, and cyclone separators) and their best configuration.• Analyzed the efficacy of cyclone separator for micro-scale LO separation incorporating cost and efficiency factors.• Studied different pre-cooling scenarios in LNG plants incorporating safety, cost, and efficiency factors.• Studied insulation system for vacuum jacketed pipes incorporating cost and efficiency factors.• Analyzed financial viability of the LNG plant supply chain incorporating OPEX, CAPEX, Payback, Lifespan, etc.• Studied LNG cycles (e.g., Expander Cycle, APCI C3-MR, POCLP, PRICO, MFC, Liquefin, and Shell DMR) and selection criteria.• Studied different aspects of the LNG industry such as gas conditioning units, onshore/offshore supply chain, unloading/offloading and storage technologies, BOG management, LNG quality, LNG process control & automation, regasification terminals, etc. Show less
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Korea Institute of Industrial Technology | Thermochemical Energy Conversion R&D group
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Cheonan, Chungcheongnam-do, Korea
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Researcher (Thermal-Fluids / Thermal Power Plant)
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Mar 2017 - Mar 2020
• Developed a 1-D scheme for the thermal and hydraulic calculation of PC boilers in different operating conditions. • Designed and optimized convective (HRSG / Tube Banks), radiative (Furnace), and mixed heat exchangers (Platen Superheater) in the utility boilers. • Designed the overall frame of a 550 MWe PC boiler for the pressurized oxy-combustion system. • Optimized the performance of Samcheonpo #1 560 MWe PC boiler regarding fuel blending, air distribution between burners and OFAs, fuel/air distribution between burner levels, etc., to maximize output and minimize NOx and slagging/fouling risks while maintaining safe operation. • Analyzed thermodynamics of the thermal power plants using Aspen Plus. • Held/participated in R&D brainstorming, information sharing, and data transferring sessions. Show less
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Building Mechanical Facilities Engineer
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Feb 2015 - Feb 2017
• Made HVAC and Plumbing plans using 2D & 3D AutoCAD and Revit MEP. • Prepared BIM documentations. • Performed energy analysis, ductwork, piping, BAS, fire/smoke safety using ASHRAE standard codes (e.g., ASHRAE HVAC Applications, ASHRAE HVAC Fundamentals, ASHRAE HVAC Systems and Equipment, ASHRAE Standard 62.1, etc.). • Designed HVAC BAS (instrumentation). • Performed HVAC and Plumbing calculations utilizing commercial and personally developed programs. • Performed CFD analysis using ANSYS Fluent ensuring proper circulation and ventilation of air in apartment units. • Studied noise in HVAC systems. • Evaluated different HVAC systems according to client's preferences and technical considerations. • Performed calculations related to Solar Water Heating systems. • Analyzed mechanical facilities' market and suggested the proper and cost-effective type to the customer. • Established meetings with clients/team members to discuss different aspects of the project. • Field inspections to ensure the exact implementation of the design. • A regular presence in the project site and ensuring implementation of HVAC draft. • Purchased the technical building facilities (air conditioners, pumps, water tanks, firefighting equipment, water equipment, etc.). Show less
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Education
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Sungkyunkwan University
Master's degree, Mechanical Engineering