Built about 1898, it is one of the last traditional farm-built prune dryer buildings in Washington, using a wood fire and natural draft to dry locally-grown fruit.
12.
KSO condenser is cooled with a dry cooling system, a natural draft condenser that uses towers to distribute air across fin blades in order to dissipate heat.
13.
Through the 1950s and 1960s, this style of furnace was used to replace the big, natural draft systems, and was sometimes installed on the existing gravity duct work.
14.
That movement or flow of combustion air and flue gas is called " natural draft ", " natural ventilation ", " chimney effect ", or " stack effect ".
15.
The spray pond is the predecessor to the natural draft cooling tower, which is much more efficient and takes up less space but has a much higher construction cost.
16.
The flue system and stack combined to provide a natural draft to carry the smelter exhaust gases, and it was claimed to be capable of handling three to four million cubic feet per minute of gas.
17.
The natural draft in the tunnel ( and the 4.7 % gradient ) acted as a chimney encouraging the smoke to flow uphill towards the oncoming vehicles and out of the ( eastern ) entrance portal.
18.
I've been able to find a bunch of information on how to get maximum efficiency from an oil fired boiler with natural draft & mdash; measure flue temperatures and CO 2 percent and adjust the draft accordingly.
19.
But not all large scale iron production in Africa was associated with natural draft furnaces those of Meroe ( Sudan, first to fifth centuries CE ) were produced by slag-tapping bellows-driven furnaces, and the large 18th-19th century iron industry of the Cameroon grasslands by non-tapping bellows-driven furnaces.
20.
Natural draft furnaces were particularly characteristic of African savanna woodlands, and were used in two belts across the Sahelian woodlands from Senegal in the west to Sudan in the east, and in the " Brachystegia-Julbenardia " ( miombo ) woodlands from southern Tanzania south to northern Zimbabwe.
