FHD-501A – How Hydronic System Components Really Work All pages • 1,104KB
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The Circulator, And How It Moves Water At Bell & Gossett, we make many different types of circulators. Some run at low speeds and are lubricated with oil. Others run at higher speeds and are lubricated with oil. Others run at higher speeds and are lubricated by the system water. Some, like the Series 100,
Download bulletin: FHD-207 (PDF file). This book is intended to simplify the selection of components for a steam heating system.
Download bulletin: FHD-206 (PDF file, 143KB). “Heat transfer units that use steam to produce hot water are known as indirect heaters. They are often shell and tube type heat exchangers and are generally referred to as converters, hot water generators, and instantaneous heaters. The ASME Code for Unfired Pressure Vessels is the nationally recognized authority
“Anyone who has experienced cavitation damage to a pump impeller, shaft, or seals knows that problems relating to net positive suction head (NPSH) can also mean “not pumping so hot.” To prevent damaging cavitation, it is necessary that engineers clearly understand the critical importance of NPSH when selecting pumps for steam condensate systems. This article
Download the Steam Team’s first bulletin: FHD-205 (PDF file, 220KB). “In a two-pipe system, steam supply to the heating units and condensate return from heating units are through separate pipes. Air accumulation in piping and heating units discharges from the system through the open vent on the condensate pump receiver. Piping and heating units must
Download Bulletin FHD-200A Energy Efficient Selection of Steam-to-Liquid Heat Transfer Systems “Traditionally, the engineering of steam-to-liquid heat transfer systems has been done by using the maximum available steam pressure to select the smallest and least expensive heat exchanger. The control valve, steam trap and other ancillary equipment would then be selected using the operating conditions
Back in the days of coal and wood-fired boilers heating contractors used vacuum air vents to help them get the maximum efficiency out of their steam heating systems. They called these old systems “Vapor/Vacuum,” and the principle that made them work was a simple one: At very low pressure,steam takes up about1,700 times more space
Sizing and Selection of F&T Traps F&T, or float and thermostatic, traps handle condensate, air and steam differently than other traps. The thermostatic element is like the element found in radiator traps. It is normally open and its function is to pass air and other non- condensable gases into the return line. Once steam arrives
Good Piping Practice Prevents Water Hammer in Steam Systems One of the most common complaints against steam heat is that a system sometimes develops a hammer-like noise commonly referred to as water hammer. It can be very annoying. However, it may indicate a condition which could produce serious consequences including damaged vents, traps, regulators and