What do Killer Whales Eat? Killer whales are carnivore marine mammals, so their diet is full of meat gotten by hunting several species in their habitat. Since there are several ecotypes of killer whales, their eating habits are closely linked to the geographical area where they are located and with their population.
I have an old Crane Sunnyday 15 oil furnace with integral water heating coil for the household use. Based on my oil consumption during the Summer months, when the burner does not operate to heat the hot water cast iron baseboard radiators, I'm using ~1.25 gal/day to heat the water. I am the only one in the house, take one shower/day and wash a few dishes. I use the dishwasher for most stuff and run that every four or five days.
It's used to turn the water into steam (the technical term for that energy is the latent heat of vaporization), and the steam stores that energy. It's a lot of energy: 1 gram of steam has enough energy to raise 7 grams of water from room temperature to boiling. When steam condenses back into water on the cooler surface of food, it gives that energy back, quickly heating the food surface. This is why steam can burn your skin badly and quickly. On the other hand, steam isn't very dense--in fact, it's over 1,600 times less dense than water--and, as soon as the surface of the food reaches the same temperature as the steam, you no longer get the huge benefit from condensation.