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Cheap Jaden Schwartz Jersey

Several variants exist for a Fleet or End-User Ownership model. These models typically apply to entities that have vehicles that require fueling and desire to own the station that provides that fuel. The “Own and Operate” model applies to entities that will own and operate the CNG station. In some cases Cheap Patrik Berglund Jersey , the ownership could be shared among multiple entities using the same station or with a utility in a hybrid arrangement. Variations include the following:

Ownership Differences:

a) The ownership entity uses its own personnel for operation and maintenance of the facility
b) The ownership entity contracts with a third-party for operation and maintenance of the facility

Fueling Sources:

a) The ownership entity contracts with a utility for the regulated transportation and sale of natural gas to the station
b) The ownership entity contracts with a third party for the natural gas commodity and the utility entity provides regulated transportation service to the delivery point

Fast Fill

Generally, fast-fill stations are best suited for retail situations where light-duty vehicles, such as vans, pickups, and sedans, arrive randomly and need to fill up quickly. The space needed to store the equipment measures about the size of a parking space. CNG can also be delivered via dispensers alongside gasoline or other alternative fuels dispensers. Fast-fill stations receive fuel from a local utility line at a low pressure and then use a compressor on site to compress the gas to a high pressure. Once compressed Cheap Alexander Steen Jersey , the CNG moves to a series of storage vessels so the fuel is available for a quick fill-up. Drivers filling up at a fast-fill station experience similar fill times to a conventional gasoline fueling station—less than 5 minutes for a 20 gallon equivalent tank. CNG at fast-fill stations is often stored in the vessels at a high service pressure (4,300 psi), so it can deliver fuel to a vehicle faster than the fuel coming directly from the compressor, which delivers fuel at a lower volume. Drivers use a dispenser to transfer CNG into the tank. The dispenser uses sensors to calculate pressure and measure the number of GGEs delivered to the tank, taking temperature into account.

Timefill

Time-fill: CNG Time-fill stations are used primarily by fleets and work best for vehicles with large tanks that refuel at a central location every night. Time-fill stations can also work well for small applications, such as a fueling appliance at a driver's home. At a time-fill station Cheap Jay Bouwmeester Jersey , a fuel line from a utility delivers fuel at a low pressure to a compressor on site. Unlike fast-fill stations, vehicles at time-fill stations are generally filled directly from the compressor, not from fuel stored in tanks. The size of the compressor needed depends on the size of the fleet. Although there is a small buffer storage tank, its purpose is not to fill vehicles, but to keep the compressor from turning off and on unnecessarily—wasting electricity and causing undue wear and tear on the compressor. The storage tanks are sometimes used to "top off" vehicle tanks during the day.

The time it takes to fuel a vehicle depends on the number of vehicles, compressor size Cheap Ty Rattie Jersey , and the amount of buffer storage. Vehicles may take several minutes to many hours to fill. The advantage of using a time-fill station is that the heat of recompression is less, so you usually get a fuller fill then with a fast-fill station. Also, with a time-fill station you can control when you fill the vehicles. This means you can instead choose to run the compressor during off-peak hours (like at night), to achieve lower electricity rates

Time-fill stations are carefully architected based on the application they will be used for. For example, a transit bus company may need a larger compressor that can deliver 8 to 9 gallons per minute, while a refuse truck company can make due filling trucks at 3 gallons per minute using a smaller compressor. A consumer application may need far less—such as Cheap Jaden Schwartz Jersey , less than half of a gallon an hour. These differences account for the large variance in the cost of installation.

Mobile Stations

Mobile Onsite Fueling

Though not yet a common practice, some fleets are exploring mobile onsite CNG fueling options, also known as "wet hosing." In this scenario, all vehicles return to the yard in the evening, and a CNG supplier fuels the vehicles overnight. A fleet may choose this option instead of building onsite infrastructure. Mobile onsite fueling can also be used as a temporary arrangement when CNG vehicles arrive before infrastructure is operational or when infrastructure is out of service. This option may not be available in all geographic areas. A fleet should consult local code authorities to identify any restrictions to mobile fueling.

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