Баллон гелия на сколько шаров? Какой объем гелия в баллоне?

Table -50 11.2 (114) -45 11.5 (117) -40 11.7 (119) -35 12.0 (122) -30 12.2 (124) -25 12.5 (127) -20 12.7 (130) -15 13.0 (133) -10 13.2 (135) -5 13.5 (138) 0 13.7 (140) +5 14.0 (143) +10 14.2 (145) +15 14.5 (148) +20 14.7 (150) +25 15.0 (153) +30 15.2 (155) +35 15.5 (158) +40 15.7 (160) How to choose the right cylinder:    • Как выбрать гелиевый баллон. Как выгодно к...   If you've decided to support my work, please use my Sberbank card: 5469980123971943 Yulia Sergeevna R. Hello everyone, today I'll answer a question. How many balloons can you inflate from one cylinder? And those who watch to the end will learn a simple method for determining whether your cylinder is diluted with air. To answer this question, you need to know how much helium is in the cylinder. For example, let's take a 40-liter cylinder. To determine the amount of helium in a cylinder, the most common method is an approximate (obvious) one, which assumes that a 40-liter cylinder contains 6 cubic meters (6000 liters) of helium. So, take 150 atmospheres and multiply them by 40 liters, and you get 6,000 liters, or 6 m³. However, this only works for ideal gases, i.e., gases where the distance between the gas molecules is much greater than the size of the molecules themselves. When the pressure of helium is low, it is quite similar to an ideal gas. However, at high pressure, the density of compressed helium increases, and the distances between the helium molecules decrease so much that the molecules begin to repel each other, at which point helium ceases to be an ideal gas. Taking this into account, we get 5,700 liters, but in theory, in practice, the cylinder will hold no more than 5,500 liters or less. I've personally seen cylinders filled with helium many times, and as I mentioned earlier, the cylinder heats up during filling, which is why cylinders are often underfilled. To reach a volume close to 5,700 liters, you need to fill it several times. Wait for the cylinder to cool or increase pressure. The temperature of the compressed gas in the cylinder is assumed to be equal to the cylinder surface temperature. Cylinder temperature is measured with a contact thermometer. Non-contact temperature meters are not suitable in this case due to their large measurement error. If compressed gas enters the cylinder (filling the cylinder with helium), the cylinder temperature increases. If compressed gas leaves the cylinder (discharge of helium from the cylinder), the cylinder temperature decreases. Cylinder temperature also depends on the ambient temperature. The normal cylinder temperature is considered to be +20 degrees Celsius. At this temperature, the pressure with a full cylinder will be 150 bar. A change in temperature causes a change in pressure. For example, if the temperature is 0 degrees Celsius, the pressure will drop to 140 atmospheres. If it rises to +30 degrees Celsius, the pressure will increase to 155 atmospheres. So, we've determined how much helium is in a 40-liter helium tank, or at least roughly estimated how much it should contain. Now, how many balloons can be inflated with one tank? This isn't entirely straightforward: different manufacturers inflate balloons of the same stated size at different rates. Our balloon sizes are in inches, and for example, a manufacturer claims their balloons are 12 inches, but if we compare Belgian and Columbia balloons, we'll see that Columbia is larger. This is probably why Belgium also makes 14-inch balloons. A 14-inch Belgian balloon inflates like a 12-inch Sempertex. Or take a 12-inch Chinese balloon; it's not only smaller than a Columbia, for example, but also smaller than an 11-inch Qualatex (USA). Therefore, it's difficult to say exactly how many balloons can be inflated with one tank; there's a margin of error when filling the tank and when inflating the balloons. Personally, I use these numbers as a guide; they may be underestimated, but it's better to be that way than to have illusions. I'll list the most essential items. A 12-inch Sem or 14-inch Bel balloon requires 400 balloons. A 12-inch Jemar balloon, like China, requires 450 balloons. 40-inch meter-long balloons require 110 balloons. Stars, hearts, and circles require roughly the same amount of helium, but of course, a star requires less, a heart requires more, and a circle requires even more helium—a little less than 400 balloons. The figures vary in size and volume, but if you exclude giant walking figures, you can roughly estimate that you can easily inflate 120 figures from a single balloon. Of course, all of this is fairly arbitrary; remember that temperature affects these figures: the warmer the temperature, the more balloons you can inflate from a single balloon.