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 ...

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 ...

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 ...

Holtec International has completed the design and computer simulation phases for its HI-HEAT district heating system. HI-HEAT is the low-pressure steam supply version of the company's Green Boiler ...