Math & Numbers
Ventilation Rate Calculator (People / Area / Contaminant)
Compute the required outdoor / supply ventilation rate. ASHRAE 62.1 ventilation-rate procedure: people component Vpz = Rp·P, area component Vaz = Ra·A, breathing-zone outdoor air Vbz = Vpz + Vaz, zone supply airflow Voz = Vbz / Ez. Three modes: ASHRAE 62.1 (people + area), per-person rate (P × Rp), or contaminant dilution (Q = G / (C_acc − C_sup), where G can be mg/s, mg/h, or L/s of gas and concentrations mg/m³ or ppm). Results reported in L/s, m³/h, and CFM.
Quick start
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/ventilation-rate-calculator' \
-H 'Content-Type: application/json' \
-d '{"mode":"ashrae","occupants":20,"rp":2.5,"rpUnit":"L/s-person","area":100,"areaUnit":"m2","ra":0.3,"raUnit":"L/s-m2","ez":1,"gGeneration":0,"gUnit":"L/s-gas","cAccept":0,"cSupply":0,"cUnit":"ppm","molarMass":44.01,"decimalPlaces":4}'API reference
Send a POST request with your inputs as JSON. File parameters require a separate upload first.
Endpoint
POST https://api.elysiatools.com/en/api/tools/ventilation-rate-calculatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| mode | select | No | ASHRAE 62.1 (people + area), per-person rate, or contaminant dilution. |
| occupants | number | No | Number of occupants P. Used in 'ashrae' and 'perperson' modes. |
| rp | number | No | Outdoor air rate per person Rp, in the selected Per-person Rate Unit. Used in 'ashrae' and 'perperson' modes. |
| rpUnit | select | No | — |
| area | number | No |
MCP integration
Add this tool to your Model Context Protocol server so AI agents can list and call it.
Server configuration
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-ventilation-rate-calculator": {
"name": "ventilation-rate-calculator",
"description": "Compute the required outdoor / supply ventilation rate. ASHRAE 62.1 ventilation-rate procedure: people component Vpz = Rp·P, area component Vaz = Ra·A, breathing-zone outdoor air Vbz = Vpz + Vaz, zone supply airflow Voz = Vbz / Ez. Three modes: ASHRAE 62.1 (people + area), per-person rate (P × Rp), or contaminant dilution (Q = G / (C_acc − C_sup), where G can be mg/s, mg/h, or L/s of gas and concentrations mg/m³ or ppm). Results reported in L/s, m³/h, and CFM.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=ventilation-rate-calculator",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}List available tools
After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Call this tool
Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "ventilation-rate-calculator",
"arguments": {
"mode": "ashrae",
"occupants": 20,
"rp": 2.5,
"rpUnit": "L/s-person",
"area": 100,
"areaUnit": "m2",
"ra": 0.3,
"raUnit": "L/s-m2",
"ez": 1,
"gGeneration": 0,
"gUnit": "L/s-gas",
"cAccept": 0,
"cSupply": 0,
"cUnit": "ppm",
"molarMass": 44.01,
"decimalPlaces": 4
}
}
}