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The other product is a HDMI plug-in stick with, in general, lesser specifications than the contemporaneous boxes; [12] these are offered in the entry-level Fire TV Stick Lite, the standard Fire TV Stick, and the high-end Fire TV Stick 4K and Fire TV Stick 4K Max (the third of which effectively replaced the third-generation "pendant" Fire TV [17 ...
Fire TV (box) [1] [2] Fire TV Stick Fire TV (box) [3] [2] Fire TV Stick Fire TV (pendant) [4] [5] Fire TV Cube Fire TV Stick 4K [2] Fire TV Cube Fire TV Stick Fire TV Stick 4K Max Fire TV Cube Fire TV Stick 4K Fire TV Stick 4K Max Fire TV Stick HD Model generation 1st 1st 2nd 2nd 3rd 1st 1st 2nd 3rd 1st 3rd 2nd 2nd Code name Bueller Montoya ...
Large industrial pumps may also serve as the feedwater pump for returning the condensate under pressure to a boiler. Condensate pumps usually run intermittently and have a tank in which condensate can accumulate. Eventually, the accumulating liquid raises a float switch energizing the pump. The pump then runs until the level of liquid in the ...
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 ...
A pump is required to circulate the column bottoms through the heat transfer tubes in the furnace's convection and radiant sections. The heat source for the fired heater reboiler may be either fuel gas or fuel oil. Image 4: Typical steam-heated forced circulation reboiler for distillation towers
The condensate expelled from a condensing boiler is acidic, with a pH between 3 and 4. Condensing boilers require a drainpipe for the condensate produced during operation. This consists of a short length of polymer pipe with a vapour trap to prevent exhaust gases from being expelled into the building.
At the bottom of the shell, where the condensate collects, an outlet is installed. In some designs, a sump (often referred to as the hotwell) is provided. Condensate is pumped from the outlet or the hotwell for reuse as boiler feedwater. For most water-cooled surface condensers, the shell is under [partial] vacuum during normal operating ...
The treatment of boiler water can be put into two parts. These are internal treatment and external treatment. (Sendelbach, p. 131) [4] The internal treatment is for boiler feed water and external treatment is for make-up feed water and the condensate part of the system. Internal treatment protects against feed water hardness by preventing ...