Abstract
The present study investigates the provision of heating, cooling, electricity, and domestic hot water consumption for a 100 m2 off‐grid zero‐energy residential building housing four occupants. Notably, the building is equipped with a hydrogen stove for cooking, and its electricity consumption is sustained throughout the year using renewable energies, independently of the electrical grid, with hydrogen energy storage. Using a Trombe wall for heating, surplus power is converted and stored in a dedicated hydrogen tank. TRNSYS software models analyze the system, demonstrating thermal comfort for 98.3% of the year. With 83 m2 of photovoltaic panels, the house operates off‐grid, slashing CO2 emissions by 8154.7 kg annually by reducing boiler energy consumption through waste heat utilization. The hydrogen tank minimizes the required battery size while the Trombe wall significantly contributes to heating, especially in colder climates. Remarkably, the building's renewable energy usage curtails emissions up to 8.5 times more than a Toyota Prius, showcasing its environmental impact in reducing greenhouse gas emissions.
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