IES for CIBSE Technical Memorandums

Software Solutions for UK Schemes & Methodologies

Comply with CIBSE Technical Memorandums

As the UK moves towards zero carbon, design teams need technical guidance on how to deliver high-performing buildings.


CIBSE’s technical memorandums aim to provide just that. Predicting overheating in buildings (TM52), assessing the risk of overheating in homes (TM59), evaluating operational energy use at the design stage (TM54) and building performance modelling to measure & verify energy performance in-use (TM63) are just a few examples of the methodologies developed to help designers, contractors and building managers close the performance gap and create more efficient, comfortable, net-zero buildings.


Our IESVE software is recommended by CIBSE to undertake the analyses required by each TM, while our building performance experts provide a range of modelling services to support these methodologies.

Thermal Modelling for Overheating

Operational Performance Models

Natural / Mechanical Ventilation Strategies

Solar / Lighting Strategies

sun glare onto building

CIBSE TM52 

Overheating is an area of growing concern for building design, with global temperature rises presenting complex challenges when it comes to balancing occupant comfort against energy and carbon reductions. TM52 provides an adaptive methodology to help predict the risk of overheating in buildings, using dynamic simulation modelling to assess compliance across three criteria.  
IESVE provides a simple approach to analysing thermal comfort and overheating directly within the software. Easy to use, users can extract the results needed for TM52 with just the click of a button once a dynamic simulation has been run using the VE's Energy Simulation application.

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CIBSE TM54

Eliminating the performance gap between design predictions and operational building energy performance will be key to achieving net-zero building targets. CIBSE TM54 provides guidance to help evaluate and more accurately predict operational energy use at the design stage, covering all energy uses - both regulated and unregulated. To support TM54 assessments, IESVE's ApacheHVAC application includes UK standard system prototypes & a system design wizard that generates the system and assignments for TM54 models. While our specially designed Python Scripts allow users to undertake:

  • Parallel Coordinate Charting
  • Parametric Analysis
  • Sensitivity Analysis
  • Uncertainty Analysis
  • Scenario Outcomes
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sun glare through window

CIBSE TM59

The residential sector faces its own unique challenges when it comes to minimising overheating risks and maintaining the comfort, health and wellbeing of occupants. CIBSE TM59 provides a methodology for assessing the overheating risks in homes (both new build and retrofit) using dynamic thermal simulation at the design stage.

IESVE dynamic thermal modelling can be used to simulate internal temperature conditions, allowing you to establish whether threshold conditions of discomfort will be reached. TM59 prescribed profiles are available within IESVE as pre-loaded TM59 profile templates, allowing users to easily select and apply the templates and profiles before beginning simulation and result analysis. A dynamic blind control tool is also available to assess the impact of shading devices in mitigating overheating risks within your design.

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CIBSE TM63

TM63 provides a framework for undertaking measurement and verification of in-use building energy performance, to help better understand and identify where performance gaps occur.  IES's iSCAN analytics platform enables designers, contractors and building managers to meet TM63 requirements. Allowing them to analyse the performance of their buildings and leverage M&V capabilities to track and monitor whether expected benefits have been realised. 

  • Automatically uncover hidden inefficiencies, save energy and reduce costs
  • Hone in on areas that need attention and tune control strategies
  • Design bespoke dashboards around your KPIs and create Command Centres
  • Utilise the data performance metrics to create and refine targets
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IES Content Store

Import and export data from VE models and export data from results files using the Python programming language. Download Parametrics Scripts to undertake analysis for CIBSE TM54 and the TM59 Analysis Report.

Browse Content Store

CIBSE Weather Data

Download CIBSE Weather Data for both 2006 and 2016 directly from the IES website. Test Reference year (TRY) and Design Summer Year (DSY) available based on current weather data and future predicted climate change data (UK Climate Impacts Programme).

Purchase Weather Files

IES Consulting Services

The introduction of schemes and methodologies such as the recently updated CIBSE operational energy TMs, on top of existing regulations and requirements, may seem overwhelming. However, IES Consulting are on hand to take your model to the next level.

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On-Demand Webinar: Using IESVE for CIBSE TM54 Analysis

With a special guest speaker from CIBSE, this webinar provided the key updates to CIBSE TM54 methodology and the implications for the building performance community, and an introduction how to undertake the assessment using IESVE 2022.

Watch Webinar

Training Resources

Take advantage of our training courses and 'Upskill for IES' sessions to see how IESVE can be used to undertake CIBSE TM calculations. 

Further Resources

Blog

CIBSE TM54 & TM63: Operational Modelling with IES

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Article

Python in the VE: VE Scripts - TM54:2022 example

Read Article
Blog

CIBSE TM52, TM59 & Part O: Overheating Assessments with IES

Read the blog
Case Study

Holland Park: CIBSE TM59 Assessment

Read Case Study

Get in Touch

Interested to learn more about what IESVE can do for you? Don't hesitate to contact our team for more information.

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