HEM Training Course

Copyright 2009-2010 ESRU, University of Strathclyde


This course comprises a number of exercises that are designed to introduce you to the different aspects and features of the HEM tool.

What is HEM?

HEM is a flexible approach to mapping the possible carbon and energy performance of a dwelling. It has pre-simulated results embedded as a data table in the tool and applies the appropriate system and context calculations to provide instant energy, carbon and cost results. Each individual dwelling is described by a specific combination of parameters which allows a discrete model to be identified which is then used to represent the dwellings behaviour.

How to download HEM?

1. Download HEM installer from http://www.esru.strath.ac.uk/
2. Run Installer and point the browser to your home directory. The Installer creates a shortcut on the Desktop and Programs menu,
3. The following directories will be created:
..\Esru\HEM\bin (for HEM executable)
..\Esru\HEM\data (for data tables)

Note: If you are working on a machine without write permission to the C: drive, you will need to install and run HEM on a local drive where you have permission to write.

Structure of HEM

There are three main parts of HEM structure
1. Interface:
The Interface is used to pass the input variables to the calculation engine.
2. Calculation Engine:
The Calculation Engine runs and accesses data held in the tables.
3. Data tables:
Data tables hold parameter values such as costs, efficiencies, emission factors etc. and can be edited by the user if required.


Using key determinants of energy performance
Investigating individual upgrades for different built forms
Investigating cost implications for upgrades
Report creation