Ideal for pipeline, construction, and maintenance welding applications, the new, high-efficiency Classic® 300 HE and SAE-300® HE diesel engine drive welders are the latest products from Lincoln Electric The pure DC generator welding output produces the welding arc preferred by pipeline operators and contractors, providing precise arc control for stick, TIG, MIG, flux-cored, and gouging processes in demanding code applications.
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.