TM65 and TM66 are both Technical Memoranda published by the Chartered Institution of Building Services Engineers (CIBSE). TM65 provides guidance on how to calculate the embodied carbon of building services equipment, while TM66 provides a framework for action and assessment for all within the lighting industry to help create a circular economy in lighting.
Here is a table that compares the two Technical Memoranda:
| Feature | TM65 | TM66 |
|---|---|---|
| Purpose | To provide guidance on how to calculate the embodied carbon of building services equipment | To provide a framework for action and assessment for all within the lighting industry to help create a circular economy in lighting |
| Scope | Building services equipment | Lighting products |
| Topics covered | Embodied carbon calculation, low-carbon building services equipment, reuse, remanufacturing, and recycling of building services equipment | Design for circularity, remanufacturing, recycling, end-of-life management |
| Target audience | Building services engineers | Lighting manufacturers, suppliers, installers, and specifiers |
Both TM65 and TM66 are important tools for the circular economy. TM65 can help to reduce the embodied carbon of buildings by encouraging the use of low-carbon building services equipment. TM66 can help to improve the sustainability of lighting by promoting the reuse, remanufacturing, and recycling of lighting products.
Here are some additional details about each Technical Memorandum:
- TM65
TM65 is a comprehensive guide to calculating the embodied carbon of building services equipment. It covers a range of equipment, including:
* Heating, ventilating, and air conditioning (HVAC) systems
* Lighting
* Plumbing
* Electrical systems
* Fire protection systems
* Security systems
TM65 provides guidance on how to calculate the embodied carbon of each type of equipment. It also includes a database of embodied carbon factors for a wide range of materials and components.
- TM66
TM66 is a framework for action and assessment for all within the lighting industry to help create a circular economy in lighting. It covers a range of topics, including:
* Design for circularity
* Remanufacturing
* Recycling
* End-of-life management
TM66 provides guidance on how to design lighting products that can be reused, remanufactured, or recycled at the end of their useful life. It also includes a case study of a lighting manufacturer that has successfully implemented circular economy principles.
Both TM65 and TM66 are important tools for the circular economy. They can help to reduce the environmental impact of buildings and lighting products.