Engineering modeling & simulation
CFD, heat and mass transfer, and 0D/1D process models, connected with prototypes, measurements and experimental validation.
ANSYS · IPSEpro · SolidWorks
Sławosz Kleszcz, EngD - R&D Engineer
Understanding systems. Informing decisions.
System
Hydrogen production, energy conversion and control
Modeling
Gas turbine model validated against measurements
Analysis
Energy cost modeling and uncertainty analysis
Automation
Engineering calculations and automated reporting
Decision
Data analysis supporting commercial pricing decisions
01 / Expertise
Engineering, data & business decisions.
Data science & business analytics
Data analysis, pricing and cost models, techno-economic assessment and uncertainty analysis to support engineering and business decisions.
Python · Excel / VBA · Monte Carlo
Software & automation
Python applications, measurement tools and automation that turn models and analyses into repeatable workflows.
Python · LabVIEW · Automation
02 / Selected work
Models, data & practical solutions.
Projects connecting engineering models, data analysis, business decisions and software.
Microclimate control system
Heat and moisture recovery through a periodically reversing airflow.
Techno-economic energy assessment
Combining experiments, process simulation and uncertainty analysis for micro-CHP.
FedEx pricing calculator
Bringing proposal analysis and commercial pricing rules into one workflow.
OriCalc orifice flow calculator
A Windows application for ISO 5167 orifice sizing, measurement-error analysis and engineering reports, now sold as a licensed product.
Gas turbine & digital twin
Connecting a working micro gas turbine with a validated process model.
Hydrogen Hub Center
Integrating hydrogen production, utilization, measurement and control.
Pressure test station
A dedicated stand for internal and external leakage measurements.
Flow measurement system
CFD-supported development of a pressure-based airflow measuring element.
Constant airflow control
Pressure measurement, signal processing and calibration for recuperators.
Two-phase heat exchanger simulation
Transient modeling of heat transfer, condensation and evaporation.
Four-hole orifice simulation
Comparing numerical flow fields with experimental pressure measurements.
Centrifugal fan analysis
Testing theoretical fan characteristics against numerical predictions.
V6 engine model
A mechanical assembly model for understanding engine synchronization.
Underground gas storage assessment
Economic feasibility and uncertainty of CO₂ as a cushion gas.
Solar-powered desalination
Process modeling and financial assessment for water supply on Thirasia.
Glycol system cost estimation
Component selection, hydraulic calculations and quotations in one tool.
Acoustic silencer design
Balancing sound attenuation, pressure loss and manufacturing cost.
Automated product price list
Connecting a 140-page product document to a live pricing database.
Orifice software website
Design and development of the OriCalc product website, from product pages to online sales, demo downloads and licence activation.
Swipe to explore
03 / Publications
Publications
Journal articles, conference papers and conference contributions on heat recovery, air distribution, flow measurement and energy systems.
Exogenous-spatial scale techno-economic methodology for energy application assessment based on levelized cost of electricity: A case study in Norway
A.H.S. Weerakoon, S. Kleszcz, M. Assadi
An analysis of the periodic counterflow heat exchanger for air-to-air heat recovery ventilators
S. Kleszcz, M. Jaszczur, B. Pawela
Hydrogen safety considerations: Mitigating risks and securing operations in enclosed spaces
S. Kleszcz, M. Assadi
A numerical and experimental analysis of multi-hole orifice in turbulent flow
A. Golijanek-Jędrzejczyk, A. Mrowiec, S. Kleszcz, R. Hanus, M. Zych, M. Jaszczur
Development of a microclimate control system based on a highly efficient periodic counterflow heat exchanger
S. Kleszcz
An experimental investigation of the thermal efficiency and pressure drop for counterflow heat exchangers intended for recuperator
S. Kleszcz, P. Mazur, M. Zych, M. Jaszczur
An experimental analysis of the fluid flow on performance and frost formation in exhaust air energy recovery heat exchanger
M. Jaszczur, M. Borowski, M. Karch, S. Kleszcz
Experimental tests of the air flowing out of a swirl diffuser
M. Borowski, M. Jaszczur, M. Karch, S. Kleszcz
Energy monitoring in a heating and cooling system in a building based on the example of the Turówka hotel
M. Borowski, P. Mazur, S. Kleszcz, K. Zwolińska
Analysis of the temperature, humidity, and total efficiency of the air handling unit with a periodic counterflow heat exchanger
M. Jaszczur, M. Borowski, D. Satoła, S. Kleszcz, M. Karch
Analysis and optimization of hybrid renewable energy systems
P. Palej, Q. Hassan, S. Kleszcz, R. Hanus, M. Jaszczur
Numerical and experimental analysis of the air stream generated by square ceiling diffusers
M. Jaszczur, P. Madejski, S. Kleszcz, M. Zych, P. Palej
An experimental and numerical investigation of the thermal and non-thermal efficiency for counterflow heat exchanger
M. Borowski, M. Karch, S. Kleszcz, P. Sala, G. Waryan
Analysis of the anti-icing system used in air handling units with a counterflow heat exchanger
M. Jaszczur, S. Kleszcz, M. Borowski
The use of mathematical modeling for the construction of a control system for a climate chamber
M. Banaś, M. Filipowicz, K. Lalik, S. Kleszcz, S. Podlasek, T. Turlej, M. Kozek
An analysis of the innovative exhaust air energy recovery heat exchanger
M. Borowski, M. Jaszczur, D. Satoła, S. Kleszcz, M. Karch
Swipe to explore publications
04 / About
From complex systems to clear decisions.
I am Sławosz Kleszcz, an R&D engineer with an EngD and experience in universities and industry. I work across numerical modeling, data analysis and software development, connecting engineering research with practical and business applications.
My projects range from energy systems and experimental validation to pricing, cost modeling and Python tools. I combine simulation, measurements and analysis to understand how systems perform and support informed decisions.
Experience
Engineering R&D
AGH / Frapol
Industrial doctoral research and HVAC development: CFD, heat-transfer modeling, controls and experimental validation.
Energy-systems research
UiS
Gas turbines, hydrogen infrastructure and storage: modeling, system development and techno-economic analysis.
Business analytics
FedEx
Data analysis, cost models and Python/Excel tools for pricing, automation and business decisions.