Math & Numbers
Cooling Load Calculator (Area / U-value + Infiltration)
Estimate the cooling load of a room by the simplified ASHRAE steady-state method. Transmission sensible load Q_trans = Σ(A_i·U_i·ΔT) over envelope surfaces entered one per line as 'area,U' (U in W/(m²·K)). Infiltration/ventilation sensible Q_s = 1.23·ACH·V·ΔT and latent Q_l = 3010·ACH·V·ΔW (W), where ΔW is the indoor-outdoor humidity-ratio difference derived from dry-bulb temperature and relative humidity via the Magnus saturation fit. Total cooling load = total sensible + total latent. Temperature in °C/K/°F (only differences matter), area in m²/ft².
Quick start
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/cooling-load-calculator' \
-H 'Content-Type: application/json' \
-d '{"surfaces":"50, 0.5\n10, 1.8","areaUnit":"m2","indoorTemp":24,"outdoorTemp":33,"tempUnit":"°C","indoorRH":50,"outdoorRH":70,"volume":120,"ach":0.5,"decimalPlaces":2}'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/cooling-load-calculatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| surfaces | textarea | Yes | One envelope surface per line as 'area,U-value'. U in W/(m²·K). Area in the selected Area Unit. Example line: 50, 0.5 |
| areaUnit | select | No | — |
| indoorTemp | number | Yes | Indoor dry-bulb temperature, in the selected Temperature Unit. |
| outdoorTemp | number | Yes | Outdoor dry-bulb temperature, in the selected Temperature Unit. |
| tempUnit | select | 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-cooling-load-calculator": {
"name": "cooling-load-calculator",
"description": "Estimate the cooling load of a room by the simplified ASHRAE steady-state method. Transmission sensible load Q_trans = Σ(A_i·U_i·ΔT) over envelope surfaces entered one per line as 'area,U' (U in W/(m²·K)). Infiltration/ventilation sensible Q_s = 1.23·ACH·V·ΔT and latent Q_l = 3010·ACH·V·ΔW (W), where ΔW is the indoor-outdoor humidity-ratio difference derived from dry-bulb temperature and relative humidity via the Magnus saturation fit. Total cooling load = total sensible + total latent. Temperature in °C/K/°F (only differences matter), area in m²/ft².",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=cooling-load-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": "cooling-load-calculator",
"arguments": {
"surfaces": "50, 0.5\n10, 1.8",
"areaUnit": "m2",
"indoorTemp": 24,
"outdoorTemp": 33,
"tempUnit": "°C",
"indoorRH": 50,
"outdoorRH": 70,
"volume": 120,
"ach": 0.5,
"decimalPlaces": 2
}
}
}