Economic And Environmental Benefits Analysis and Optimization Strategies for Residential Heat Pumps in Northern Chinese Cities

Abstract

The transition to sustainable heating in northern Chinese cities is critical for achieving national carbon neutrality goals but necessitates solutions that ensure reliability in harsh winters. This study investigates the potential of residential heat pumps to meet this challenge, analyzing their benefits and formulating actionable strategies to overcome key implementation barriers. Findings indicate that contemporary heat pump systems can achieve efficiency improvements of 250% to 400% compared to conventional heating methods, resulting in 30% to 50% reduction in operational expenses per unit of heating output and 40% to 60% lower carbon emissions. Furthermore, these systems contribute significantly to enhanced air quality, with the potential to reduce pollution-related mortality by 15% to 25% in northern cities. Nevertheless, several critical challenges impede widespread adoption: high upfront investment costs ranging from ¥15,000 to ¥35,000 per unit, performance degradation under extreme cold conditions—leading to capacity reductions of 30% to 50% at temperatures below -10°C—and complexities in integrating with existing centralized heating infrastructure. To address these barriers, this study proposes a comprehensive set of optimization strategies. These include innovative financing mechanisms such as Property Assessed Clean Energy (PACE) models, the adoption of advanced cold-climate technologies like enhanced vapor injection systems that enable reliable operation at temperatures as low as -30°C, and coordinated infrastructure modernization supported by smart grid integration. Together, these measures offer a viable pathway for cities in northern China to transition toward sustainable heating without compromising system reliability or economic feasibility.