Direct steam injection (DSI) heaters inject. steam directly into the circulating water loop. For processes which return the jacket water. below 212Â°F (100Â°C), they achieve 100% heat transfer by using both the sensible and the latent heat of the steam. Above this temperature there is a minimal drop in efficiency. Let us compare the efficiency of an indirect (shell and tube type) heat exchanger to a DSI heater.
Most owls do not migrate but they can be nomadic in searching for the best food sources. Some species, such as the snowy owl, have regular irruptions and will sometimes appear unexpectedly far outside their regular range. A group of owls is called a parliament, wisdom, bazaar or study. Baby owls are called owlets. Owls have been found in the fossil record up to 58 million years ago. The largest recorded owl fossil, Orinmegalonyx oteroi, stood about three feet tall. Owls have long been cultural symbols and they have been found in cave paintings in France, in Egyptian hieroglyphics and even in Mayan art.
Strix is a genus of owls in the typical owl family, one of the two generally accepted living families of owls, with the other being the barn-owl. Common names are earless owls or wood owls, though they are not the only owls without ear tufts, and wood owl is also used as a more generic name for forest-living owls. Neotropical birds in the genus Ciccaba are sometimes included in Strix. These are medium-sized to largish, robustly built, and powerful owls. They do not have ear tufts and most are