Math & Numbers
Refrigerant Pressure-Temperature Lookup (R-22 / R-410A / R-134a)
Saturated pressure ↔ temperature lookup for common HVAC refrigerants via the Antoine fit ln(P) = A − B/(T_C + C): R-22 (HCFC-22), R-134a (HFC-134a), and R-410A (R-32/R-125 near-azeotropic blend). Coefficients fitted against the ASHRAE Handbook / NIST REFPROP saturation tables. Two modes: solve saturation pressure from temperature, or solve saturation temperature from pressure. Pressure may be absolute or gauge (atmospheric default 1.01325 bar) in bar/MPa/kPa/PSI; temperature in °C/K/°F. Engineering estimate only — does not replace the manufacturer's P-T chart.
Quick start
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/refrigerant-pressure-temperature' \
-H 'Content-Type: application/json' \
-d '{"refrigerant":"R410A","mode":"pFromT","temperature":7,"tempUnit":"°C","pressure":0,"pressureForm":"absolute","pressureUnit":"bar","atm":1.01325,"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/refrigerant-pressure-temperatureParameters
| Name | Type | Required | Description |
|---|---|---|---|
| refrigerant | select | No | Refrigerant. Coefficients fitted against ASHRAE/NIST saturation tables. |
| mode | select | No | Solve saturation pressure from temperature, or saturation temperature from pressure. |
| temperature | number | No | Saturation temperature, in the selected Temperature Unit. Used when Input Type = pressure from temperature. |
| tempUnit | select | No | — |
| pressure | number |
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-refrigerant-pressure-temperature": {
"name": "refrigerant-pressure-temperature",
"description": "Saturated pressure ↔ temperature lookup for common HVAC refrigerants via the Antoine fit ln(P) = A − B/(T_C + C): R-22 (HCFC-22), R-134a (HFC-134a), and R-410A (R-32/R-125 near-azeotropic blend). Coefficients fitted against the ASHRAE Handbook / NIST REFPROP saturation tables. Two modes: solve saturation pressure from temperature, or solve saturation temperature from pressure. Pressure may be absolute or gauge (atmospheric default 1.01325 bar) in bar/MPa/kPa/PSI; temperature in °C/K/°F. Engineering estimate only — does not replace the manufacturer's P-T chart.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=refrigerant-pressure-temperature",
"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": "refrigerant-pressure-temperature",
"arguments": {
"refrigerant": "R410A",
"mode": "pFromT",
"temperature": 7,
"tempUnit": "°C",
"pressure": 0,
"pressureForm": "absolute",
"pressureUnit": "bar",
"atm": 1.01325,
"decimalPlaces": 4
}
}
}