一位旅德业主回国后，如何在市中心复刻德国被动房体验
How an owner returning from Germany recreated the passive house experience in a city-center villa
德国被动房标准（Passive House Standard）由德国被动房研究所（Passivhaus Institut, PHI）于1990年代创立，是全球公认的最严格的建筑节能标准之一。在德国，成千上万的家庭享受着被动房带来的舒适体验——无需传统暖气、无需大功率空调，室内温度常年保持在20~26°C，湿度稳定在30%~60%，空气质量始终清新洁净。
The Passive House Standard, established by Germany's Passivhaus Institut (PHI) in the 1990s, is one of the world's most rigorous building energy standards. Hundreds of thousands of German families enjoy year-round comfort at 20–26°C, stable humidity at 30–60%, and consistently fresh indoor air — without traditional heating or powerful air conditioning.
本案例的业主是一位长年旅居德国的华人，回国后在广东江门市中心购入一栋独栋别墅。在德国生活多年的他，早已习惯了被动房带来的健康、舒适的居住环境。因此他提出了一个明确的要求：不迁郊区，在市中心复刻德国被动房的居住体验。
The owner, a long-term German resident of Chinese origin, returned to China and purchased a villa in downtown Jiangmen. Having lived in passive houses for years in Germany, he made one clear demand: replicate the German passive house experience right in the city center, without moving to the suburbs.
该项目由巢象被动房团队围绕六个维度展开设计：
ELE HOME provides full EPC contracting services for this project, designed around six core technical systems:
巢象使用德国PHI官方PHPP软件完成全项目能耗模拟和参数校核，以下为关键指标计算结果：
ELE HOME completed full-project energy simulation and parameter verification using PHI's official PHPP software. Key indicators below:
| 指标 | Indicator | 计算值 | Calculated | PHI认证限值 | PHI Limit | 结果 | Result |
|---|---|---|---|---|---|---|---|
| 年采暖需求 | Annual Heating Demand | 1 kWh/(m²a) | ≤15 kWh/(m²a) | ✓ 通过 | |||
| 采暖负荷 | Heating Load | 8 W/m² | ≤10 W/m² | ✓ 通过 | |||
| 制冷+除湿需求 | Cooling + Dehumidification | 39 kWh/(m²a) | ≤42 kWh/(m²a) | ✓ 通过 | |||
| 高湿频率(>12g/kg) | Overheating Frequency (>12g/kg) | 0% | ≤10% | ✓ 通过 | |||
| 气密性(n₅₀) | Airtightness (n₅₀) | 0.6 h⁻¹ | ≤0.6 h⁻¹ | ✓ 通过 | |||
| PER | PER | 52 kWh/(m²a) | ≤60 kWh/(m²a) | ✓ 通过 | |||
| Passive House Classic | Passive House Classic | Yes | — | 通过 |
作为对比，广州地区常规住宅制冷需求约为80–150 kWh/(m²a)，而该项目仅需39 kWh/(m²a)，约为常规住宅制冷能耗的1/2至1/4。
For comparison, typical residential cooling demand in the Guangzhou region is approximately 80–150 kWh/(m²a), while this project requires only 39 kWh/(m²a) — roughly 1/2 to 1/4 of conventional cooling energy.
| 环境指标 | Parameter | 目标值 | Target | 说明 | Notes |
|---|---|---|---|---|---|
| 室内温度 | Indoor Temperature | 冬季≥20℃, 夏季≤26℃ | Winter ≥20℃, Summer ≤26℃ | 全年无需大功率空调暖气 | No high-power AC or heating needed year-round |
| 相对湿度 | Relative Humidity | 冬季≥30%, 夏季≤60% | Winter ≥30%, Summer ≤60% | 杜绝干燥和潮湿霉变 | Eliminates dryness and mold |
| 新风量 | Fresh Air Volume | ≥30 m³/h·人 | ≥30 m³/h·person | CO₂<1000 ppm | CO₂<1000 ppm |
| 室内噪音 | Indoor Noise | 昼间≤40 dB, 夜间≤30 dB | Day ≤40 dB, Night ≤30 dB | 图书馆级安静 | Library-level quietness |
| 年采暖需求 | Annual Heating Demand | 1 kWh/(m²a) | 传统住宅的1/20至1/30 | 1/20 to 1/30 of conventional homes | |
| 综合能耗 | Total Energy | 制冷+除湿≤39 kWh/(m²a) | Cooling+Dehumid ≤39 kWh/(m²a) | 含空调/新风/除湿 | Incl. AC / ventilation / dehumidification |
在湿热气候区的城市中心，现有住宅完全可以通过系统性被动房改造，达到德国Passive House Classic标准。年采暖需求仅1 kWh/(m²a)、气密性n₅₀=0.6 h⁻¹、制冷+除湿需求39 kWh/(m²a)——这些数字不是营销话术，而是PHI认证体系下的设计结果。
In the hot-humid climate of a city center, existing homes can absolutely reach the German Passive House Classic standard through systematic passive retrofit. An annual heating demand of just 1 kWh/(m²a), airtightness of n₅₀=0.6 h⁻¹, and cooling+dehumidification demand of 39 kWh/(m²a) — these are not marketing claims, but design results validated within the PHI certification framework.