Last year with the help of @SoftwarmLLC I was able to collect data from one of their heating projects and test 2 separate systems in the process. In this paper I go into how the system functions and how profitable it was at the point in time I took down the information. If anyone has time to read through it constructive feedback is greatly appreciated.
Most plants that I know of tend to. It is typically used for cleaning the trucks and equipment as warm water (~100F) makes scraping off caked on material a bit easier. It is also used in colder parts of the year for mixing the concrete.