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In one case, a 2,600 US gallons per minute (160 L/s) steam condensate pump exploded when it was operated with its suction and discharge valves closed. The force of the explosion was such that it propelled a 5-pound (2.3 kg) piece of metal casing over 400 feet (120 m) away from the site of the explosion.
Feedwater pumps range in size up to many kilowatts and the electric motor is usually separated from the pump body by some form of mechanical coupling. Large industrial condensate pumps may also serve as the feedwater pump. In either case, to force the water into the boiler, the pump must generate sufficient pressure to overcome the steam ...
Buy One of These Craftsman Power Tool Combo Kits at a Discount, and Lowe’s Will Throw in a Free Battery ... both of which are $100 off and include a free 20-volt, 4-amp-hour (Ah ... Lowe’s is ...
Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value) by condensing water vapour found in the exhaust gases in a heat exchanger to preheat the circulating water.
Basically, your circuit breaker is your home’s first line of protection when equipment goes haywire. Your air conditioning system has a lot of wires and its own switch on your circuit breaker.
The 37-year-old shared the terrifying story on the Tuesday, Dec. 17 episode of her Let’s Be Honest with Kristin Cavallari podcast. ABC/Shutterstock Kristin Cavallari in November 2020
A large power circuit breaker, such as one applied in circuits of more than 1000 volts, may incorporate hydraulic elements in the contact operating mechanism. Hydraulic energy may be supplied by a pump or stored in accumulators. These form a distinct type from oil-filled circuit breakers where oil is the arc-extinguishing medium. [13]
[1] SF 6 gas is electronegative and has a strong tendency to absorb free electrons. The contacts of the breaker are opened in a high-pressure flow of sulfur hexafluoride gas, and an arc is struck between them. The gas captures the conducting free electrons in the arc to form relatively immobile negative ions.
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