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Solar Halowerk Low-Wattage Cooking Energy Calculator
x402
Solar Halowerk Low-Wattage Cooking Energy Calculator is a paid API for AI agents from solar.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Computes thermodynamic heating time estimates for low-wattage cooking appliances given user-supplied device power, food mass, temperatures, specific heat, and efficiency range.
Price / call$0.003
Success—
StatusUnknown
How this service works
Uses rated electrical power, food mass, start and target temperature, specific heat and an explicit efficiency range supplied by the caller. Optional vessel heat, evaporation and a caller-defined hold phase can be included. It contains no recipes, recipe text, food-specific cooking claims or hidden food database; the output separates the thermodynamic lower bound from the practical range and is not a food-safety clearance.
Output
Returns a separated breakdown of the thermodynamic lower bound heating time and the practical heating time range (low, expected, high) in minutes or similar units, along with energy requirements in kJ or Wh, accounting for vessel mass, evaporation losses, and an optional hold phase. Explicitly notes this is not a food-safety clearance.
Example use cases
Off-grid camp cooking time estimate
“I have a 150W portable solar panel cooker and I want to heat 2 kg of lentils (specific heat 3.4 kJ/kg·K) from 15°C to 100°C — efficiency range is 35% low, 55% expected, 70% high. How long should that realistically take, and what's the thermodynamic minimum?”
Solar boat galley energy planning
“On my sailboat I've got a 300W electric kettle running off solar. I need to heat 1 kg of water from 10°C to 95°C (specific heat 4.18 kJ/kg·K) with efficiency between 50% and 80% expected at 65%. Can you calculate the heating time range including a 10-minute hold at 20% power?”
Off-grid homestead cooker sizing
“I'm sizing a cooker for my off-grid cabin — it'll be 400W rated. I want to heat 3 kg of stew (specific heat 3.8 kJ/kg·K) from 5°C to 85°C with a 2 kg steel pot (specific heat 0.49 kJ/kg·K), efficiency low 45%, expected 60%, high 75%. What's the expected heating time and energy needed?”
Technical details
Endpoint
POSThttps://solar.halowerk.com/low-wattage-cookingWhen to prefer
Choose this endpoint when you need a transparent, physics-based estimate of heating time and energy for a specific low-wattage electrical device — especially in off-grid, solar, or van/boat contexts — and you want to supply your own efficiency assumptions rather than relying on a black-box recipe database. Prefer this over generic cooking apps when the user needs to plan energy budgets or compare device wattages for off-grid scenarios.
Side effects
- Missing required fields (device_power_w, food_mass_kg, temperatures, specific_heat, efficiency) returns a validation error
- Target temperature below start temperature may return an error or zero/negative result
- Efficiency values out of order (high < low) may cause a validation or logic error
- Extreme parameter combinations (e.g. 10000W, 0.001 kg) may return implausibly short times without error
- Network or payment (x402) failure returns a 402 or connectivity error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hold | object | |
| vessel | object | |
| efficiency | object | |
| evaporation | object | |
| food_mass_kg | number | Mass being heated in kilograms. |
| device_power_w | number | Caller-supplied rated electrical input power in watts. |
| start_temperature_c | number | |
| target_temperature_c | number | |
| specific_heat_kj_kg_k | number | Caller-supplied effective specific heat of the contents. |
Tags
x402
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