How do I simulate an EV charger?

Open this page and use the live Geothermal Heat Pump tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive an EV charger from your own measurements.

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Geothermal Heat Pump for an EV charger

Simulate an EV charger live in your browser. This runs the real Geothermal Heat Pump solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

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Heat Pump

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Heat Pump COPLive

more heat than the energy in

Controls

Presets

Indoor temp (°C)

Outdoor temp (°C)

Fraction of Carnot

A heat pump does not make heat — it moves it, so it can deliver several kilowatts of warmth per kilowatt of electricity. The coefficient of performance is that ratio, capped by the Carnot limit T_hot/(T_hot − T_cold). The colder it gets outside, the harder the pump works and the lower the COP — but even at freezing it beats a resistance heater several times over.

▶ Run in Python

Data Inspector

COP7.74

Carnot max COP15.5

Heat per kW power7.7 kW

vs resistance heater7.7× better

Governing equation

COP_{Carnot} = \frac{T _{h}}{T _{h} - T _{c}} = \frac{294.1}{294.1 - 275.1} = 15.5

Reading this result: At 2°C the pump delivers about 7.7 kW of heat per kW of electricity — roughly 7.7× a resistance heater — because it moves heat rather than making it.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Thermal Resistance

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Composite Wall Heat TransferLive

R-value & U-value

Controls

Presets

Drywall (mm)

Insulation (mm)

Brick (mm)

Inside temp (°C)

Outside temp (°C)

Heat flows through a wall like current through resistors in series. Each layer's thermal resistance is its thickness over its conductivity; adding them gives the total R-value, and the heat flux is the temperature difference divided by it. Insulation, with very low conductivity, dominates the R-value — the steep temperature drop shows where it does its work.

▶ Run in Python

Data Inspector

Total R-value2.71 m²K/W

U-value0.37 W/m²K

Heat flux9.6 W/m²

Governing equation

R = \sum \frac{L _{i}}{k _{i} A} = 2.71 \frac{m ^{2} K}{W}, Q = \frac{Δ T}{R} = 9.6 \frac{W}{m ^{2}}

Reading this result: The insulation layer carries the most thermal resistance, so the temperature falls most steeply across it. A total R-value of 2.71 m²K/W lets 9.6 W/m² flow for this 26°C difference.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

About this simulation

The full Geothermal Heat Pump tool models an EV charger with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

More you can do with Geothermal Heat Pump

Geothermal Heat Pump for a solar farm Geothermal Heat Pump for a wind turbine Geothermal Heat Pump for a home battery Geothermal Heat Pump for a power grid Geothermal Heat Pump for a heat pump Geothermal Heat Pump for a gas turbine Geothermal Heat Pump for a hydro dam Geothermal Heat Pump for a nuclear plant

Other ways to simulate an EV charger

Solar PV System for an EV charger Wind Turbine Power for an EV charger Hydroelectric Power for an EV charger Heat Pump COP for an EV charger EV Range & Efficiency for an EV charger Battery Storage for an EV charger

Frequently asked questions

How do I simulate an EV charger?: Open this page and use the live Geothermal Heat Pump tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive an EV charger from your own measurements.