Life Cycle Carbon Emissions of GSHP vs Traditional HVAC Systems | Residential Case Study from Jinan, China
1. Introduction
The increasing urgency of climate change mitigation has intensified research into low-carbon building technologies, particularly in the residential sector where energy consumption remains high. This study introduces a comparative life cycle assessment of Ground Source Heat Pump (GSHP) systems and conventional HVAC systems, focusing on their carbon emission performance. Using a residential building case from Jinan, China, the research aims to quantify emissions across all life cycle stages and identify sustainable heating and cooling solutions suitable for urban environments.
2. Methodological Framework for Life Cycle Carbon Assessment
This research adopts a life cycle assessment (LCA) methodology to systematically evaluate carbon emissions associated with GSHP and traditional HVAC systems. The framework includes material production, system installation, operational energy consumption, maintenance, and end-of-life disposal. By applying standardized LCA boundaries and region-specific emission factors, the study ensures accurate and comparable results relevant to residential buildings in northern China.
3. Operational Carbon Emission Performance Analysis
Operational energy consumption is the most significant contributor to life cycle emissions in residential HVAC systems. This topic examines the comparative operational performance of GSHP and traditional HVAC systems under Jinan’s climatic conditions. The analysis demonstrates that GSHP systems significantly reduce carbon emissions during the operational phase due to higher energy efficiency and reduced reliance on fossil fuels.
4. Embodied Carbon and Infrastructure Impacts
While GSHP systems offer lower operational emissions, their initial embodied carbon—stemming from drilling, material use, and system installation—is comparatively higher. This section evaluates the trade-offs between embodied and operational emissions, emphasizing the importance of long-term performance evaluation when selecting sustainable residential heating and cooling technologies.
5. Regional and Climatic Implications of GSHP Adoption
The effectiveness of GSHP systems is highly influenced by regional geological and climatic conditions. This topic explores how Jinan’s soil properties, temperature profile, and energy mix affect GSHP performance and carbon reduction potential. The findings provide insights into regional adaptability and scalability of GSHP systems across similar climatic zones.
6. Policy, Research, and Future Sustainability Implications
The final topic discusses the broader implications of the research for energy policy, residential building design, and future academic studies. It highlights how GSHP systems can support China’s carbon neutrality goals and encourages further interdisciplinary research integrating economics, policy incentives, and smart energy systems to accelerate low-carbon residential development.
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