Executive Engineering Summary: 15-Chair Pneumatics Standard
For a modern 15-chair stomatological clinic or regional dental center, continuous chair downtime is unacceptable. Using standard international simultaneous utilization coefficient k = 0.70, the required compressed air supply is 1,050 L/min @ 0.8 MPa, and central vacuum suction requirement is 4,500 L/min air-flow with -18 to -32 kPa dynamic operating suction. A dual-redundant multi-head architecture is mandatory to eliminate single-point operational failures.
1. Mathematical Formula for Flow Sizing (Simultaneous Coefficient k = 0.70)
In clinic design, sizing pneumatic delivery by simple arithmetic multiplication (15 × 100 L/min = 1,500 L/min) results in oversized, inefficient equipment. Empirical hospital engineering applies the simultaneous utilization curve:
Q_total = 15 chairs × 100 L/min × 0.70 × 1.0 = 1,050 L/min @ 0.8 MPa (8.0 bar)
To deliver 1,050 L/min with 100% duty cycle stability, the clinic requires either a single HYT-1200 (1,200 L/min, 9.0 kW) unit or a dual-unit redundant skid consisting of two HYT-500 (600 L/min each) units.
2. Comprehensive 15-Chair Equipment Recommendation Matrix
| System Function | Recommended Model | Total Flow / Capacity | Power & Voltage | Redundancy Level |
|---|---|---|---|---|
| 100% Oil-Free Air Source | HYT-1000 / Dual HYT-500 | 1,050 ~ 1,200 L/min @ 0.8 MPa | 7.5 kW / 380V 3Ph 50/60Hz | N+1 Redundancy |
| PSA Desiccant Air Dryer | HD-1500 Modular Twin-Tower | Dew point ≤ -40°C (ISO Class 2) | 0.05 kW / 220V | 100% Sterile |
| Central Vacuum Suction | HVS-15 Multi-Stage Cyclone | 4,500 L/min air-flow (-28 kPa) | 5.5 kW / 380V | Continuous Cyclone |
| Sterilization Purified Water | HRC-300 Dual RO + Ozone | 300 L/h permeate output | 1.5 kW / 220V | CSSD Loop Compliant |
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