glossary
Welcome to our glossary of useful terms and expressions related to sustainability in the m&e sector.
You can search for definitions and explanations using our alphabetical links below or simply by scrolling through.
We hope you find these helpful and you will see as you navigate other pages on the site that each time a glossary term occurs there is a live link to its definition here.
Please contact the site editor Ewen Rose if there are other subjects you think we should include.
- National Calculation Methodology (NCM)
- The procedure for demonstrating compliance with Building Regulations for buildings other than dwellings is by calculating the annual energy use for a proposed building and comparing it with the energy use of a comparable 'notional' building.
- Natural Ventilation
The process of bringing ventilation air into a building through open windows or other openings, due to wind pressure or temperature differences between the outdoor and indoor air, without the assistance of mechanical power.
The provision of ventilation in buildings without the use of fans and other forms of mechanical air movement.