同济大学在多项国家和上海市科研项目的资助下研制开发的纳米石墨相变储能复合材料具有储能密度高、导热换热效果优异、安全稳定、阻燃和环境友好等优点。
与现有的相变储能材料相比，纳米石墨基相变储能复合材料的导热系数提高 1 ～ 2 个数量级，相变温度在 -150 ～ +1000°C 之间连续可调，储能密度可达 150 ～ 1000J/g 以上。
应用潜力：
相变材料在其相变温度附近发生相变，释放或吸收大量热量，相变材料的这一特征可被用于储存能量或控制环境温度目的，在许多领域具有应用价值。
相变材料具有应用领域非常广泛的特点，在建筑节能、现代农业温室、太阳能利用、生物医药制品及食品的冷藏和运输、物理医疗（热疗）、电子设备散热、运动员降温（保暖）服饰、特殊控温服装、航天科技、军事红外伪装、电力调峰应用、工业余热储存利用等诸多领域均具有明显的应用价值。
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We are mainly focusing on the development of phase change material and its applicaition technologies. Our phase change materials are based on highly thermally conductive nanoporous graphite. The phase change temperature spans from -150 to 1000 °C gradually, the thermal energy storage density is in the range of 150 to above 1000J/g.
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Energy shortage and environmental pollution are two global issues. Especially in the developing countries, like China, the situation is much more serious, partly due to high developing speed. Solutions to these problems include improvement of the efficiency of energy systems and the utilization of renewable energy sources, such as solar energy. Thermal energy storage is essential for these two solutions. Comparing to sensible thermal energy storage, latent thermal energy storage based on phase change material (PCM) is preferred due to its high energy storage density and narrow operating temperature range. These two advantages lead to small volume and less heat loss, which attract attention of researchers in different fields.
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One of the important application fields of PCM is building energy conservation, where PCM is used for two purposes. One is to store the time-dependent and intermittent solar energy that does not necessarily match the energy need for building space heating at all times. The other is to shift building heating or cooling load from peak to off peak electricity periods, which is helpful in improving the power generation management and can achieve significant economic benefit.
Other applications of PCM are:
- Green house for modern agriculture
- Low temperature storage and transport of medicine and foods
- Medical therapy
- Thermal management of electronics
- Cooling or warming clothes for athlete
- Special clothes with temperature controlling functions
- Space technology
- Military infrared disguise
- Peak shaving of electric supply
- Utilization of industrial waste heat
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上海市纳米科技与产业发展促进中心
