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.
So many areas where a little forethought and awareness can avoid larger problems — sizing, velocity, piping and connections, double trapping, condensate return, proper pressure, blowdown tanks, and more. Read on for some good habits and why they’re worth having.
When designing or replacing a low pressure steam boiler, throw out everything you know about hydronic boilers. A steam system is closer in operation to an air conditioning unit than it is to a hydronic boiler. If you design a steam system using hydronic design methods, it will not operate properly.
Many engineers tend to avoid or delegate the nitty gritty of a ground source heat pump system, from soil moisture effects to building system (im) balance. It's time for designers to get in the loop. Learn more about Grounded In Reality in the December issue. Other topics in the December issue include health care HVAC, Boilders, check out the Back2Basics, and more.