What question did this study set out to answer?

To evaluate the operational performance, component sizing, and economic feasibility of an integrated photovoltaic, solar-thermal, battery, and seasonal hydrogen storage system for cold-climate residential heating and electricity needs.

August 15, 2026Eng—Advances in EngineeringOpen Access

Performance and Economic Boundary Analysis of an Integrated PV–Solar-Thermal–Battery–Hydrogen System for a Cold-Climate Dwelling: A Case Study in Northern Japan

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Authors

TFTiancheng Fang BSBaoyi Shen YYYingliang Yang

Discussion

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Overview

Simulation study demonstrates seasonal hydrogen improves winter adequacy and domestic heat recovery in cold-climate dwellings, indicating technical viability despite current cost barriers.

Key Points

To evaluate the operational performance, component sizing, and economic feasibility of an integrated photovoltaic, solar-thermal, battery, and seasonal hydrogen storage system for cold-climate residential heating and electricity needs.
Conducted a coupled annual TRNSYS dynamic simulation at a 0.125-hour time step for a residential dwelling in Aomori, Japan.
Modeled interactions between photovoltaics, evacuated-tube solar water heating, battery dispatch, part-load electrolyzer operation, compressed-hydrogen storage, and PEM fuel-cell combined heat and power.
Fuel-cell heat recovery increased the number of days meeting the domestic hot-water screening threshold (daily mean tank temperature ≥43 °C) from 221 to 332 days.
Electrolyzer sizing analysis determined that a 225 W operating-power cap provided a positive seasonal reserve, a 205 W cap was near-cyclic, and the baseline 475 W cap was substantially oversized.
The lower-bound capital cost of the hydrogen storage hardware substantially exceeded the break-even investment ceiling supported by annual operating savings.

Cite This Study

Fang et al. (2026) studied this question.

synapsesocial.com/papers/6a8019bb75c2e31742c85d93 https://doi.org/10.3390/eng7080411

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August 15, 2026Eng—Advances in EngineeringOpen Access

Performance and Economic Boundary Analysis of an Integrated PV–Solar-Thermal–Battery–Hydrogen System for a Cold-Climate Dwelling: A Case Study in Northern Japan

View Full Paper

Ask AI

Bookmark

Authors

TFTiancheng Fang BSBaoyi Shen YYYingliang Yang

Discussion

Member takes

Overview

Simulation study demonstrates seasonal hydrogen improves winter adequacy and domestic heat recovery in cold-climate dwellings, indicating technical viability despite current cost barriers.

Key Points

To evaluate the operational performance, component sizing, and economic feasibility of an integrated photovoltaic, solar-thermal, battery, and seasonal hydrogen storage system for cold-climate residential heating and electricity needs.
Conducted a coupled annual TRNSYS dynamic simulation at a 0.125-hour time step for a residential dwelling in Aomori, Japan.
Modeled interactions between photovoltaics, evacuated-tube solar water heating, battery dispatch, part-load electrolyzer operation, compressed-hydrogen storage, and PEM fuel-cell combined heat and power.
Fuel-cell heat recovery increased the number of days meeting the domestic hot-water screening threshold (daily mean tank temperature ≥43 °C) from 221 to 332 days.
Electrolyzer sizing analysis determined that a 225 W operating-power cap provided a positive seasonal reserve, a 205 W cap was near-cyclic, and the baseline 475 W cap was substantially oversized.
The lower-bound capital cost of the hydrogen storage hardware substantially exceeded the break-even investment ceiling supported by annual operating savings.

Cite This Study

Fang et al. (2026) studied this question.

synapsesocial.com/papers/6a8019bb75c2e31742c85d93 https://doi.org/10.3390/eng7080411

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