Most modern hydronic heating and/or cooling systems are closed systems that must be maintained at some minimum pressure. This would seem to be a simple concept, but it is surprising how often a lack ...

How hot does your engine run? Is it on the cool side? The hot side? Where should it be? How big of a radiator should you run? Antifreeze or water? Tap or distilled? Do you need a pressurized cooling ...

Pressurized systems at Michigan Technological University include everything from small, unheated, low-pressure laboratory setups to large, extremely high-pressure heated metal vessels weighing several ...

IN LAST MONTH'S column ("Active and passive solar pre-heat systems," pg. 36), the final system we addressed was the closed-loop pressurized system. One of this system's major Achilles heels is the ...

R290, commonly known as propane, has a long history as a refrigerant and is now seeing renewed adoption in heat pump systems ...

Conventional district heating systems are generally designed around the load. However, an alternate approach would be to design around potential heat sources, including the waste heat from power ...