Energy & Thermal Modelling
Mansim helps engineering teams quantify energy use, heat transfer and thermal risk before committing to design, equipment or operational changes.
We combine building energy simulation, thermodynamic and process models, computational fluid dynamics, thermal finite-element analysis and experimental validation to assess components, buildings, industrial processes and complete energy systems. Our work supports lower energy consumption, stronger thermal resilience, safer operation and practical decarbonisation across energy, data centres, buildings, manufacturing and nuclear engineering.
15+ years
of world-class computational simulation
250+
peer-reviewed publications
200+
organisations supported
25+
countries served
ISO 9001
certified quality processes
What is Energy and Thermal Modelling?
Energy and thermal modelling uses physics-based simulation to predict how heat is generated, transferred, stored and lost within a component, building, industrial process or complete system. Depending on the engineering question, a study may combine building energy simulation, thermodynamic mass-and-energy balances, CFD, thermal finite-element analysis and measured data. The model can reveal temperatures, heat fluxes, energy demand, efficiency, warm-up and cool-down behaviour, thermal storage performance and response to peak or fault conditions. This allows engineers to understand the causes of overheating or energy loss, compare potential improvements and make evidence-based decisions about equipment, materials, controls, retrofit measures and operating strategy.
When is Energy & Thermal Modelling Used
01
Why is the system overheating or failing to maintain temperature?
Identify hot spots, cold regions, thermal stratification and insufficient heating or cooling that may be limiting performance.
02
Where is energy being lost or used inefficiently?
Quantify heat losses, heating and cooling demand, and inefficient thermal behaviour to identify opportunities for energy and cost reduction.
03
Is the heating or cooling system correctly sized?
Assess chillers, heat exchangers, radiators, refrigeration systems, thermal storage and HVAC equipment against actual operating requirements.
04
Will the system remain within temperature limits under critical conditions?
Test peak loads, start-up, shutdown, charging, discharging and equipment-failure scenarios to assess thermal resilience and operating margins.
05
How should thermal storage, heat recovery or low-carbon technologies be integrated?
Evaluate storage capacity, heat recovery, heat pumps and renewable-energy integration to determine suitable configurations and operating strategies.
06
Which design or operating strategy gives the best thermal performance?
Compare materials, geometries, equipment configurations and control strategies before prototyping, procurement, retrofit or capital investment.
Meet the Experts
Dr Mohammad Elsarraj
Dr Mohammad Elsarraj holds a BEng and PhD in Mechanical Engineering from the University of Manchester. His expertise spans building energy modelling, thermal simulation and CFD, with experience across residential, commercial and healthcare environments. At Mansim, he applies tools including IES-VE, ANSYS and STAR-CCM+ to assess energy performance, ventilation and thermal behaviour, while his research focuses on real-time energy and environmental monitoring.
Dr Pouyan Sardari
Dr Pouyan Talebizadeh Sardari is a Senior Research Fellow at the University of Nottingham and leads Mansim’s R&D programme. He has published more than 150 journal articles and has been recognised among the world’s top 2% of scientists. His expertise spans thermal management, computational simulation and systems integration, with current research focused on Li-ion batteries, power electronics, electric motors, heat pumps and thermal energy storage.
Frequently Asked Questions
Energy & Thermal Modelling Projects
Discuss Your Energy & Thermal Modelling Project
Tell us the engineering decision you need to make, the information you already have and the timescale you are working to. Your enquiry will be reviewed by a CFD engineer, who will acknowledge your enquiry within one working day and identify the most proportionate next step.
