Is it feasible and beneficial to run an HVO oxygen generating system with photovoltaic (PV) solar panels? That is the topic I’ll be exploring in this post. I consulted with professional solar installers on the technical questions regarding modern PV solar systems.
You just made an investment in an HVO system because you want to save money on oxygen, have a safe work environment, and you like the idea of flipping a switch to make all the oxygen you need. Now you can focus on your business rather than having to check your tank levels, place orders, schedule delivery, replace empties, and pay oxygen bills.
To capitalize on your investment, put your system in a proper space and care for it so it can live a long and happy life. The things you need to do are pretty straightforward, especially if you begin with a little planning.
In part 1, we talked about the density of oxygen, gas measurement standards, and how to calculate gas volume for a container of a given size at a given pressure. In this post, we’re going to use that knowledge to configure an HVO system that is capable of producing the amount of oxygen that you require.
When you buy a container of ice cream, you may think that a quart is a quart until you learn that one brand contains a lot more air than another. You can weigh the two containers and you’ll know that the heavier one contains more product. The same is true for gases: two tanks may be “full” from the top to the bottom, but the volume of stored gas is based on density, which is mostly determined by pressure.
Like most common gases, oxygen expands to fill its container. But how much oxygen is actually inside? You may know that an oxygen cylinder contains some number of cubic feet of oxygen, but the cylinder doesn’t look like it could possibly hold that much. It’s the compressibility of oxygen that makes it possible to squeeze a mass of gas into a small space.
This simple question has a not-so-simple answer, as there are many factors that influence the cost of 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. The amount of oxygen you use will impact the cost of compressed, liquid, and generated oxygen. To make the most economical choice, let’s examine your requirements.
HVO gives you a choice between a basic, reliable product, dubbed the Classic Plus™️, and the Pro Plus™, which has a built-in ultrasonic oxygen sensor, and is “cloud-connected”, with sophisticated data tracking, monitoring, and configuration options. In this post, you’ll learn the differences between them, and how to decide which is best for your application.
The HVO oxygen-generating system turns itself on and off automatically based on the pressure in the oxygen storage tank. It is programmed to keep the tank pressure within a range of “setpoints”. Here’s how it works:
When the system turns on for the first time, the tank pressure is at zero PSI. This triggers the “charging” process.
Charging consists of running the oxygen concentrators that are attached to the HVO system, compressing the generated oxygen, and storing it in an oxygen-clean tank.
Tank pressure is monitored continuously. When the pressure reaches the high threshold (100 PSI for the Standard, 150 PSI for the Mighty Mite and MAX), the system goes into “discharging” mode, at which point the oxygen concentrators and the compressor are turned off. All that can be heard is the quiet hiss of oxygen running through the regulator.
Once the pressure drops below the low threshold (30 PSI for the Standard, 100 PSI for the Mighty Mite and MAX), the charging process is triggered again.
If the oxygen generating capacity is well-matched to the output requirements, you’ll receive a continuous supply of oxygen.
If you find that your oxygen requirements have grown since your original purchase or you’re thinking about buying a large HVO system, this post will be helpful.
Did you know that HVO has the only expandable oxygen-generating system on the market? This means that you can start with a system that has one oxygen concentrator generating 10 LPM and add capacity to generate 80, 100, 120 LPM, or even more. Because of this, you can preserve your original investment. This makes the Total Cost of Ownership (TCO) for an HVO system lower than any competing product on the market today.
This post pertains to systems that use the Seeing Eye Cloud Service.
Most of our customers use a WiFi connection to get IoT data up to the cloud, but you can use an Ethernet cable. This is a great option when it’s easy to run a cable to the HVO system. A hard-wired connection will provide higher bandwidth, better latency, and greater reliability.
In our literature, you’ll often see the abbreviation “PSI”, which stands for “Pounds per Square Inch” or, more precisely, “Pound force per Square Inch”. What it expresses is the number of pounds of force applied to an area of one square inch.