With oxygen generation, you make what you need, so there’s very little waste. That’s oxygen that you’re paying for, but getting no benefit. A LOX tank may blow off as much as 10% of its contents every day. The resulting ejection of oxygen creates a loud sound like a steam locomotive coming to a stop. The pressure in the LOX tank builds until a safety blow-off valve achieves its release pressure. Liquid oxygen tanks will periodically blow off pressure, which can be alarming if you’ve never experienced it. The time to break-even is typically from 9 – 18 months. The cost per kilogram for HVO systems is in the range of 7-10 cents, depending on the scale, and larger systems are generally the most economical. compressed tanks at 2200 PSI.Īlso, make sure that you understand the coverages in your insurance policy pertaining to the use of oxygen in your home or business.įor many applications, the argument for making your own oxygen is hard to counter: it’s safer (low pressure tanks), easier (no tanks to lug), and much less costly than delivered oxygen. For good reason, fire marshals are generally much less concerned about generated oxygen tanks that achieve a high pressure of 150 PSI vs. It may be illegal for you to use compressed or LOX tanks in your office building or home. During bad weather, it may not be possible for the delivery truck to reach you.īefore getting tanks delivered, check your local zoning ordinances. If you don’t own tanks, you’ll pay a rental fee. There’s always the possibility of a price increase, or being denied service because, for example, the tanks you own are deemed unsafe. You must schedule your delivery in advance or you’ll have to pay for expedited service. They’re not going to haul those big steel tanks for free. The price of delivered oxygen takes into account your distance from the gas company. Pay careful attention to the contract language, as these contracts typically renew automatically and may require you to cancel well in advance if you intend to renegotiate. To get a permanent, on-site LOX tank, you’ll have to sign a contract with the gas company that will lock you into a price for at least a year. For the LOX itself, you’ll pay a price per 100 CF, as well as delivery and other fees. This setup requires a concrete platform that you must build. For this privilege, the gas company will charge you $20,000+ for the tank, evaporator and other equipment. If you use a large amount of oxygen, you may want to install a permanent, on-site LOX tank. See this article about the benefits of a flow sensor that can store data in the cloud. You can extrapolate from the test to calculate your overall requirements. Find your actual flow rate by measuring usage in an isolated part of your system, e.g. For this reason, I recommend setting up a simple test in which you measure oxygen usage with a flow meter such as the HVO Oxygen Tracker, and, if needed, a temporary oxygen source, such as a compressed tank. It’s not easy to calculate your oxygen requirements accurately, as there are many variables to put into the equation. The short explanation is that the “S” in SCFM implies standard temperature and pressure, whereas CFM implies actual temperature and pressure. To understand the meaning of the word “standard” in these units of measurement, read this article. For flow, it’s typically SCFM (standard cubic feet per minute), SCFH (standard cubic feet per hour), or SLPM (standard liters per minute). If your concern is weight, gas is commonly measured in pounds or kilograms. For volume, the common unit in the US is standard cubic feet (SCF), whereas Europe and elsewhere use standard cubic meters (M3). To quantify oxygen, you may use volume, weight, or flow rate. Results will be published on our website. To make the most economical choice, let’s examine your requirements.Ĭlick here to take our oxygen cost survey. The amount of oxygen you use will impact the cost of compressed, liquid, and generated oxygen. Gas company prices vary significantly depending on where you’re located, whether you’re getting scheduled deliveries, and whether you have an annual contract. This simple question has a not-so-simple answer, as there are many factors that influence the cost of oxygen.
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