The new law extends the credits for GHP installations through 2023. Residential credits are 26% through 2022, step down to 22% in 2023, and expire Jan. 1, 2024. Commercial credits remain at 10% through 2023.
Why do ground loops in moist soils sometimes perform better than expected? What ground loop design tactics can address building system imbalance? Engineers need to take more responsibility for their full GSHP designs, and these questions are a good place to start.
With a little guidance on ground-source heat pump design temperatures and a few rules of thumb for ground loop flow rates, most engineers are pretty comfortable designing the building side of a ground-source heat pump (GSHP) system.
This month’s Facility File will focus on the B2B June test for an HVAC application on a college campus with a building program to construct a new 12-classroom facility. The project delivery method is integrated project delivery (IPD).
Uniform Solar Energy and Hydronics Code (USEHC) contains some requirements that may be inappropriate given certain conditions, climates, or simple designer discretion. That’s not a problem … unless your locality or state adopts USECH language as binding. Dig into the problem and note a timely opportunity to avoid having these issues set in stone for another few years.
As early as 3000 BC, civilizations began to create codes for public order and safety. The Code of Hammurabi, the old “eye for an eye” law many are familiar with, also included laws for safe building construction.
When ASHRAE’s original book on ground source heat pumps was published 17 years ago, such systems were used mainly in residential settings and, according to the association, the designers who used them were seen as risk takers.