Views: 0 Author: Site Editor Publish Time: 2026-04-15 Origin: Site
When planning a CNG Daughter Station project, one of the first and most critical questions international buyers ask is: "How many vehicles can I refuel per hour, and what total volume of gas can I dispense in a day?" The answer is not a single number—it depends on your equipment configuration, but the good news is that CNG Daughter Stations can be precisely sized to match your target throughput, from small fleet operations to high-traffic public stations.
A CNG Daughter Station's refueling capacity is primarily determined by the compressor's rated displacement. In the market today, standard integrated compressor packages are commonly available in capacities ranging from 650 Nm³/h to 2000 Nm³/h, with some custom systems reaching even higher outputs. Here is what those numbers mean in practical terms:
A 650 Nm³/h system can comfortably serve a small to medium-sized fleet, dispensing approximately 15,000 to 20,000 Nm³ per day (assuming 20–22 operating hours).
A 1000 Nm³/h system—one of Huayan's most popular configurations—can deliver 20,000 to 25,000 Nm³ daily, suitable for a mid-sized public station or a large private fleet.
A 2000 Nm³/h high-capacity system can exceed 40,000 Nm³ per day, meeting the demands of busy commercial stations and heavy-duty vehicle corridors.
To put this into perspective for fleet operators: a typical city bus or heavy truck may take on 80 to 120 Nm³ of CNG per fill. Therefore, a 1000 Nm³/h station can theoretically service 8 to 12 vehicles per hour per dispenser, and with multiple dispensers installed, the station's overall throughput scales accordingly.
While the compressor's nominal flow rate is the baseline, several operational factors determine the real-world refueling capacity your station will achieve:
1. Tube Trailer Unloading Rate and Scheduling
A Daughter Station relies on high-pressure tube trailers delivering CNG from a Mother Station. The unloading rate—typically designed to match the compressor inlet pressure—affects how quickly gas enters the system. Efficient scheduling of trailer swaps ensures uninterrupted operation. Huayan's integrated systems include gas unloading columns optimized for consistent flow.
2. Storage Cascade Configuration
CNG is stored in cylinder groups at high, medium, and low pressure bands to enable fast-fill operations. The total water volume of your storage cascade (e.g., 6 m³, 9 m³, or larger) impacts how many consecutive vehicles can be filled before the compressor must recharge the banks. A well-sized storage system minimizes customer wait times during peak hours.
3. Number and Type of Dispensers
A single dispenser can typically handle 4 to 6 vehicles per hour in fast-fill mode. Installing two or three dispensers multiplies the station's peak-hour capacity. Huayan offers flexible dispenser configurations, including single-hose and dual-hose models with integrated mass flow meters for accurate billing.
4. Operating Hours and Maintenance Downtime
While equipment can run 24/7, planned maintenance and filter changes are necessary. Factoring in 90–95% uptime is prudent when calculating daily capacity for business planning.
Jiangsu Huayan International Trade Co., Ltd. offers a complete range of skid-mounted CNG compressor packages specifically engineered for Daughter Station applications. Our standard product lineup covers the most requested capacity brackets:
Model Series | Nominal Capacity | Recommended Daily Throughput | Typical Application |
HY-CNG-650 | 650 Nm³/h | 12,000–18,000 Nm³/day | Small fleet, entry-level public station |
HY-CNG-1000 | 1000 Nm³/h | 20,000–28,000 Nm³/day | Mid-sized public station, municipal fleet |
HY-CNG-1500 | 1500 Nm³/h | 30,000–38,000 Nm³/day | High-volume public station |
HY-CNG-2000 | 2000 Nm³/h | 40,000–50,000 Nm³/day | Large commercial hub, logistics center |
All Huayan CNG substation compressors come as fully integrated skids, including the gas unloading column, filtration system, compressor unit, air or water cooling system, control panel, and safety instrumentation—housed in a weatherproof, noise-attenuated enclosure ready for immediate installation upon delivery.
For remote locations or projects requiring maximum flexibility, we also provide Mobile CNG Refueling Stations in 20ft and 40ft containerized formats. These units retain the same core compression capacity and can be deployed within days rather than months.
Established in 2005 and headquartered in Xuzhou, Jiangsu Province, Jiangsu Huayan International Trade Co., Ltd. is a premier manufacturer and exporter of integrated transportation and energy equipment. With over 222,000 square meters of state-of-the-art production facilities, we control every aspect of manufacturing—from precision machining to final assembly—ensuring consistent quality and competitive pricing.
Global Expertise You Can Rely On:
International Footprint: Over 80% of our output is exported to markets across Africa, Southeast Asia, the Middle East, and Latin America. We have successfully delivered and commissioned CNG Daughter Station projects in Nigeria, Tanzania, and other emerging gas economies.
Certified Compliance: All equipment meets or exceeds international standards, with ISO 9001 quality management certification, CE marking, and third-party verification by SGS available upon request.
End-to-End Support: Our engineering team works closely with you from site planning and capacity calculation through to installation supervision and operator training. We don't just sell equipment—we help you build a profitable business.
Ready to Size Your Station?
Determining the right CNG Daughter Station capacity is the foundation of a successful project. Share your estimated daily vehicle count or required gas volume with us, and our technical specialists will recommend an optimized equipment package tailored to your site conditions and budget.
