Everything You Need To Know To Find The Best cng trailer

Considerations in sizing your mobile natural gas storage trailer/s.

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Contrary to much of the advice in the industry which assumes bigger trailers are always better&#; the actual answer to the above questions is &#; &#;It depends.&#;

In many ways we can look to the aviation industry for similar inspiration. There are business cases for jumbo jets and regional-sized jets alike.

Likewise, CNG and renewable natural gas (RNG) virtual pipeline projects are far too nuanced for a one-size-fits all strategy. Just throwing the largest trailers at the project will certainly work &#; but may end up costing much more as compared to right-sizing a trailer solution for a project.

The following are some of the considerations in determining the right size of trailers for your project.

1) How much gas needs to be transported per day?

2) How far is the gas required to travel via virtual pipeline?

3) What pressures are trailers filled to?

4) What pressures will the trailers be de-fueled to? (Also know as the heal pressure of the trailer.)

5) Are there any restrictions to the times of day trailers can be pickup and dropped off?

6) Are there any space limitations to either loading or offloading areas?

7) What are your hazmat hauling logistics capabilities or limitations?

8) What time frame are you looking to for project amortization?

9) Where are you hauling and what are the on-road weight limits? Some states have different permitted weights.

10) What is the CNG trailer offloading to? Are their times when it doesn&#;t require being connected and defueling?

11) What levels of redundancy (ie additional hours of supply or storage) do you want in your mobile storage solution.

These are just some of the issues to consider when developing your virtual pipeline solution. Let&#;s take a look at some of these considerations below.

Large Trailer with Less Trips vs Smaller Trailer with More Trips:

Questions number 1 (how much gas) and 2 (how far does it need to be hauled) above are certainly the most importation. In general, the further you need to haul gas via virtual pipeline, the more incentive there will be to utilize larger trailers. That is because larger trailers generally equal less trips required.

At the same time, most Compressed Natural Gas (CNG) hauling projects are less than 200 miles each way &#; and many in the 25-to 50 mile range. And for projects that have very short hauls &#; less than 25 miles each way &#; it may be more cost effective to use a small or medium sized trailer and make an additional trip. Related to question 8 above: what are your amortization goals? The extra CAPX of larger trailers would potentially be more expensive than the extra OPX of additional short trips utilizing smaller trailers with smaller CAPX.

Hauling Transporting Logistics Considerations:

Another consideration is your hauling logistics. You can design hauling logistics and trailer rotations as an academic exercise. And then you can design it for sustainable, real-life scenarios where employees work predicable shifts with accommodations for vacations, sick time, etc.

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For example, you might require 270,000 SCF delivered each day and a large trailer may hold a total volume of 350,000 MCF of storage. As a result, academically, you require a trailer delivered every 1.29 days (350/270 = 1.29 days of volume or every 31 hours). But designing a real-life logistical support for rotating a trailer exactly every 31 hours could create a very challenging work-life schedule. A rolling schedule every 31 hours will create a schedule with pickup and drop offs that change everyday and eventually roll into the middle of the night for pickups and deliveries. Is it technically doable? Yes. Is it realistic for real-life employee scheduling? Maybe. This ties to question 7 above&#; what are the hazmat-hauling, capabilities and limitations? If it&#;s more realistic/feasible from a logistics schedule to rotate a trailer one time per day instead of every 31 hours, then you can likely reduce the size of the trailer and reduce your trailer CAPX/Lease Rate. You would only require a trailer that holds 300,000 instead of 350,000 SCF.

Level of Redundancy/Hours of Storage:

Renewable Natural Gas (RNG) Virtual Pipelines utilize dedicated trailers to a specific renewable gas plant (ie dairy, wastewater, landfill, etc). Having enough buffer storage built into your RNG hauling solution is important to ensure reliability and redundancy. As trailers are being filled and then hauled away from the plant, there needs to be another trailer queued up and ready to fill. If there&#;s a delay in a trailer returning back to the plant, is there adequate storage at the plant to ensure the plant does not need to be shut down?

For industrial gas supply, redundancy is focused on the hours of natural supply for fueling equipment. The logistics should include additional hours of supply in your trailer solution to ensure there&#;s room in the operation to help cover for a delay in trailer pickups, delivery and logistics. Redundancy can be accomplished with additional trailer assets planned as backup or permanent onsite buffer storage solutions.

Trailer Working Pressures vs Your Project:

The industry standard for CNG fueling and compression is set to PSI in United States. Nearly all CNG fueling stations have compression that will fill cylinders to this working pressure. Some CNG tube trailers are rated for higher pressures &#; PSI and even PSI. These higher pressure trailers can technically hold more gas (due to the higher level of compression) but if your project is utilizing the industry standard PSI compression, then you are not ever utilizing the higher capacity of the trailer. Said another way, you are likely paying a premium for a higher trailer pressure capability, and never utilizing this premium.

Summary:

It&#;s important to understand the details of your project to design the most effective virtual pipeline solution. CNG Direct designs, engineers and manufactures CNG tube trailers and provides turnkey trailer maintenance, hazmat transportation/hauling and logistics solutions for industrial and renewable natural gas virtual pipeline services. We customize our solutions around your project specifics. Let's get started on your project.

Do you know what CNG tank trailers are? Do you know how they&#;re used and their different aspects? If not, here are some answers. A Compressed Natural Gas tanker is the full name of a CNG tank trailer. The trailer is used to move high-pressure, compressed natural gas in cylinders to other locations, usually sub-stations for CNG. A trailer is necessary to move CNG from the main fueling station to a sub-station, because many CNG locations don&#;t have underground tubes.

Manufacturing Process

There are four types of CNG trailers, and the manufacturing process is different for each one. For example, the type one model is easier to process than type four. It is also important to mention that the cylinders used to transport CNG should be unibody or integrated. Therefore, as in the case with other types of heavy-duty trailers, there is no welding in this manufacturing process.

When shopping for a CNG tank trailer, it&#;s important to know the twelve processing steps, so you can buy a trailer that meets all safety standards. You never want a substandard or unsafe trailer. Before purchasing a CNG tanker, be sure of what you&#;re buying. Get structural and mechanical drawings to understand the construction.

The processing steps are: Inspect steel tubes; hot shell nosing; bottle neck cutting; rough machining; quenching, heat treatment, and tempering; polishing the outside; hydrostatic testing; steam drying; inner shot peening; inspecting the inner tube; airtight and non-destructive testing; and paint spraying and assembly.

CNG Tubes Trailer Definition

As mentioned earlier, a CNG trailer is used in the transportation of compressed natural gas and has different designs and may carry a variety of seamless steel cylinders. A CNG tanker is also fitted with a pressure gauge, a thermometer, and a safety device. In the setup, a gas tube and valve are used to connect every cylinder.

The structures of the CNG trailer have a frame type and a bundling type. The bundling type usually consists of (among other accessories) seamless steel cylinder, a framework, and a pipeline operating system.

The cylinders are fixed on a trailer of the bundling type; however, the quality of the framework can be reduced on this type of structure. On the other hand, this type has a larger volume, lower costs, and higher efficiency.

Different Kinds of CNG Tubes

There are four kinds of CNG tubes for trailers. These include: CNG-1, CNG-2, CNG-3, and CNG-4. With each higher number, the tubes have more filament, are lighter in weight, are more difficult to manufacture, and more expensive.

CNG-1 is made of aluminum alloy or steel and are the heaviest tubes. They are the most cost-effective and the exterior of the tube has a protective coating. CNG-2 gas cylinders are filament wound composite with the interior made of aluminum or steel.

Long fibers impregnated with resin are wrapped around the heads. In general, CNG-2 tubes are more expensive and lighter than CNG-1. A CNG-3 cylinder is referred to as a full wrapped or fully wrapped tank. The inner part is made of aluminum or steel and the body and head of the tube is wrapped with long, resin-impregnated fibers made of carbon or glass.

If you&#;re looking for the lightest cylinder, purchase CNG-4. This one has inner parts made of plastic and the tube&#;s body and head is wrapped using long fibers with resin. CNG-4 is also the most expensive.

Before You Buy

Prior to making any purchase of a CNG tank trailer, every buyer should understand how the trailer is manufactured, and consider the reputation of the seller. Be sure you have the correct product and that it will fit your needs.

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