Dynamic simulation and thermal modelling (DSM modelling) Available by Leading Level 5 Commercial Energy Assessors

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Dynamic simulation and thermal modelling (DSM modelling)

Dynamic simulation and thermal modelling (DSM modelling) enables us to create a 3D model of a building and accurately test its energy performance. This crucial information on predicted annual energy use and calculating internal heat gain is used to make informed decisions for producing an accurate Level 5 Commercial Energy Performance Certificate (Level 5 EPC).

How can DSM modelling help your project meet budget costs, energy and carbon emission targets?

By using DSM, we can see how different materials or systems will influence your energy consumptions. We can run what if scenarios and identify the most accurate cost-effective solution for you.

The DSM simulation can be used for:

  • Accurate Building Regulation Part L ADL2A L2A Energy calculations
  • Thermal modelling for overheat analysis, BREEAM and BB101
  • Natural ventilation performance and strategies
  • Carbon Dioxide levels room by room
  • Building heating and cooling loads
  • Daylight calculations and solar gains
  • Effect of shading from surrounding buildings and objects
  • Level 5 DSM EPC’s

The DSM calculations runs thousands of algorithms at 10-minute intervals throughout the year, linking to actual historical weather data and accurate sun path analysis. Along with taking into consideration within the calculations adjacent or surrounding buildings and objects to be included within the model, so the true solar gains, shading from other buildings or objects and overheating of the building are calculated accurately.

This method has a distinct advantage when the Building Regulations Part L ADL2A criterion 3 summer solar overheating is an issue, because the standard Simplified Building Energy Model (SBEM) (Levels 3 & 4) methodology and DSM features are not available in SBEM which is unable to model or calculate this accurately.

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The importance of energy efficient buildings

Commercial Energy Performance Certificates are required in the UK for buildings over 50m2 that are on the market or about to be put onto the market for sale or for letting.

With an Energy Performance Certificate, your property will be given an energy efficiency rating from A (most efficient) to G (least efficient). As part of the government’s clean growth strategy, changes to the minimum energy efficiency standards were introduced, targeting buildings with low energy efficiency. Since April 2018, commercial properties will not be able to sign new tenancy agreements unless they reach a minimum EPC rating of E.

How Dynamic Simulation Modelling works

As accredited level 5 Commercial Energy Assessors, we can help guide you through the DSM requirements and provide a background on what you need to be compliant with current and upcoming Building Regulations.

We can take your building layout drawings, specifications and turn them into a 3D model and run energy simulations over a period of time, building in hourly weather data on local weather and solar gain. From this simulation, you will be able to gain important information like peak summer time temperatures, natural ventilation strategies and carbon dioxide levels room by room – all of which could have a serious impact on your future operational costs and Energy Performance Certificate rating.

Make informed design decisions between SBEM Levels 3 & 4 to DSM Level 5 – Simulation modes

Our Commercial Energy Assessors

Make informed design decisions between SBEM Levels 3 & 4 to DSM Level 5 – Simulation modes

We have the technology to switch at any time between SBEM levels 3 & 4 to Level 5 DSM and Simulation modes to obtain the best Commercial Energy Performance Certificate for your building. As an example, once we have completed the compliance calculation we can generate overheating data to check the building against Criteria 3 of ADL2. We can readily investigate alternatives for you to find the most cost-effective options giving the best overall performance for your building.

With in-depth knowledge of Commercial Energy Performance Certificates and experience of using Dynamic Simulation Modelling at every stage of a project, we can optimise your building for energy efficiency and help you comply with the Energy Regulatory requirements. By using DSM, we can make instant adjustments for budget, scheduling and other specific requirements, helping you to make the right decisions.

Our Commercial Energy Assessors

We our experienced and accredited energy assessors with extensive Building Construction, Building Services knowledge. With our background as Chartered Quantity Surveying Practice, we have significant knowledge in Pre-Contract / Design Stage, Post-Contract (Construction phase), Operational phase, Life Cycle Costing and carryout Dynamic Simulation Modelling Services (DSM). Contact LCEA Ltd today to find out more about our DSM Level 5 services.

A Level 5 DSM Energy Performance Certificate

With strict energy efficiency legislation in place, it is important to achieve an accurate energy rating for your Commercial Energy Performance Certificate.

Buildings are divided into three different categories, each with their own level Commercial of EPC: Level 3, 4 or 5. The different levels are defined by the complexity of the building and the sophistication of the heating and ventilation systems.

A simple building will come with relatively common characteristics, such as simple heating systems and natural ventilation, whereas complex buildings might use uncommon fabrics or installations. Given the increasing complexity of modern buildings, all new buildings are likely to be categorised as Level 4 or above.

City Buildings

The Level 5 DSM analysis offers the following advantages listed below over the standard SBEM analysis (levels 3 & 4): –

Introducing Dynamic Simulation Modelling

The Level 5 DSM analysis offers the following advantages listed below over the standard SBEM analysis (levels 3 & 4): –

  • Hourly weather data with time-step control
  • Orientation modelled at 1o increments
  • Ability to model geometry in more detail for better results
  • Improved daylight modelling and solar shading options
  • Inter-zone heat transfer
  • Better modelling of thermal mass
  • Overall more accurate analysis / assessment
  • ventilation with enhanced thermal coupling to structure;
  • automatic blind control; and
  • atria.

DSM offers an accurate perception of your future building and an opportunity to exceed standards for your Energy Performance Certificate.

Introducing Dynamic Simulation Modelling

Dynamic Simulation Modelling (DSM) is a highly effective way to calculate the energy efficiency of a building before it is built, refurbishment, fitout works or any changes to an existing building before they have been implemented. With DSM, you can create a detailed thermal model of your proposed building and analyse a range of sustainability factors, like the potential for heating, ventilation and cooling. While DSM is required for all complex Level 5 Energy Performance Certificates, it can be used to provide insightful analysis for buildings of all levels.

By using DSM to find out the building’s predicted annual energy usage and the effects of the average internal temperature, you can make accurate, informed decisions about what’s best for your building.

“This publication is the copy right of Low Carbon Energy Assessors (LCEA) Ltd and is not a statement of the law, but is intended to help building / energy & sustainability managers, owners and occupiers of buildings on how the Regulations work in practice, how to apply the Regulations, what their responsibilities are and when Commercial Energy Performance Certificates (EPCs) Level 5 DSM are likely to be required under EPBD.”

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Looking for Commercial EPC / EPC'S? Contact Us for a FREE quote



If you require any additional information, please do contact our Surveying Department for more assistance on +44 (0)203 504 0135



32 Bloomsbury Street, Bloomsbury, London. WC1B 3QJ

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