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.
Best Answer: Some do, some don't. The Great Pellet Owl for example, is actually a bobble-head mammal that regurgitates an egg-shaped pellet that needs no incubating and may or may not hatch. If you break open one of these pellets you may find a baby mammal. So far, all the ones I have inspected have been dead.