Last month I wrote about early steam heating and how experimentation led to discovery, which led to new products or piping techniques. This time I will be writing about the early days of gravity hot ...

. The system at Edward Little High School features 110,000 ft (32,528 m) of 1/2 in. REHAU RAUPEX® O2 barrier crosslinked polyethylene (PEXa) pipe. At 280,000 sq ft (26,013 sq m), Edward Little High ...

Years ago, I had a high school science teacher ask our class the following question: If a piece of wood and a steel rod sat outside on a 20-degree day, which one would be warmer? While the class ...