I ran the engine today for 60 minutes using the new 800 W load. It appears to have worked exactly as planned - the unit's heater clamp did not come on even though the batteries were more or less fully charged at the start of the test. The coolant system reach equilibrium at around 42°C. The system reached steady state around 50 minutes into the test.
Electric Heater used as battery load
Water condensing out of the exhaust gas (note a single droplet at the base of right angle fitting). The shape of the exhaust flue makes the fowl water drain ineffective and so the water leaks out of the seal. This is not an issue as it can be collected with a drip tray underneath. After about 30 minutes of runtime only about 20ml of water leaked.
Today's key data:
The system reaches a steady state at around 50 minutes into the test. The coolant system stays stabilises at around 42°C with the mains pressure at max flowrate. During efficiency tests, it will be necessary to let the coolant reach its setpoint temperature (60°C) to give a realistic efficiency measurement.
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