In a new industry, standards that lay out minimum requirements for the design and installation of earth energy systems are important. This is especially true of an industry that is, or is perceived to be, more expensive to install than comparable conventional systems. Standards are there to ensure minimum standards are met, and to provide confidence for the purchaser that the system will work. They lend credibility to the technology.
CSA C448 Series-13 "Design and installation of earth energy systems" has just been released. It's the product of about 2 and a half years of committee and sub-committee meetings with people from all parts of the GCHP industry, including equipment and pipe manufacturers, design and engineering consultants, mechanical contractors, excavation and drilling contractors, utilities, government agencies, and building inspectors.
Some significant changes were made to the Standard:
You can purchase the new Standard C448 on the CSA website.
The CSA Group has submitted an application to ANSI to develop a Bi-national Standard for the Design and Installation of Earth Energy Systems, and has asked several organizations, including International Ground Source Heat Pump Association (IGSHPA), the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), the Geothermal Exchange Organization (GEO) and the National Ground Water Association (NGWA) to work together to create this Standard.
In my blog I'll be expressing my opinions about what I've the learned about ground coupled heat pump (GCHP) systems over the last 30 years. I've been very fortunate to work with many interesting people who are passionate about this technology...engineers, geologists, mechanical contractors, drillers, excavation contractors...in different parts of the world. I've learned a lot from them and will be using this forum to pass on some of the things I've learned and feel are important. Please feel free to use this information if you feel it's worthwhile...hopefully you can avoid some of the same mistakes I've learned from.