Calculator
Vacuum System Capacity Calculator
Estimate medical vacuum system capacity from outlet count, flow per active outlet, and simultaneous-use diversity.
Calculator Inputs
Legend
Vacuum System Capacity Calculator guidance
Peak vacuum capacity = outlets x flow per active outlet x diversity factor.
Input meaning
- Vacuum outlets: enter the measured, quoted, or hospital-approved value.
- Flow per active outlet: enter the measured, quoted, or hospital-approved value in L/min.
- Simultaneous-use diversity: enter the measured, quoted, or hospital-approved value in %.
Result interpretation
- Use the result as a planning estimate, not as a final approval by itself.
- Record the assumptions used so Procurement, Biomedical, Facilities, Finance, and vendors can review the same basis.
Assumptions
- Final vacuum plant sizing must follow local medical gas standards and qualified engineering design.
- Procedure rooms, ICU, emergency, and OR areas can have different simultaneous-use assumptions.
Biomedical use
- Use this calculator during RFQ preparation, technical evaluation, acceptance planning, service review, or biomedical workload planning.
How to identify the required values
Use these examples and common working ranges to choose values from gauges, labels, manuals, datasheets, RFQs, service reports, CMMS records, or hospital planning assumptions.
| Field | Example value | Common range | Tip |
|---|---|---|---|
| Vacuum outlets | Example: 1. | Use installed or planned outlets; apply diversity separately for simultaneous demand. | Use planned installed outlets, then apply diversity for simultaneous use. |
| Flow per active outlet | Example: 10 L/min. | Usually 0.1 L/min or higher; use the real hospital value. | Use the actual set flow or expected average flow for the clinical scenario. |
| Simultaneous-use diversity | Example: 50 %. | Medical gas preliminary planning often uses 25-75%, depending on department and standard. | Use the department's expected simultaneous-use factor. |
Common ranges are starting points for hospital planning. For final procurement, acceptance testing, electrical design, medical gas design, radiation shielding, dialysis water systems, or clinical use, replace the example values with site-specific data and vendor-confirmed figures.
Input Checklist
Confirm these values before relying on the output for procurement, PM, or service planning.
- Vacuum outlets
- Flow per active outlet
- Diversity factor
Safety And Engineering Notes
Use calculator outputs as planning estimates and verify critical systems with calibrated measurement or qualified engineering review.
- Final vacuum plant sizing must follow local medical gas standards and qualified engineering design.
- Procedure rooms, ICU, emergency, and OR areas can have different simultaneous-use assumptions.
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