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.
Allied Commercial has added 13- to 25-ton models to its high-efficiency K-Series product line, which currently includes 7.5- to 10-ton high-efficiency gas/electric and electric/electric models introduced earlier this year. Designed for integration into spec and bid, and replacement markets, the company says its high-efficiency K-Series models help commercial buildings meet or exceed sustainability standards while helping users to conserve energy and take advantage of federal and local energy-efficiency incentives.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.