Construction and application of waste biomass composite phase change materials
Phase change material(PCM)can store or release heat through their own phase change,thus reducing the energy supply-demand imbalance and improving the effective use of energy,but their drawbacks such as leakage during solid-liquid phase change and poor thermal conductivity limit their further development.Waste biomass materials are a class of renewable energy,inexpensive,widely available,and mostly belong to porous media,which are good carriers of PCM.Waste biomass composites utilize the rich pore structure of biomass to efficiently encapsulate PCM,which not only improves the drawbacks mentioned above,but also achieves carbon sequestration.This paper reviews the basic properties,phase change characteristics and binding methods of several PCMs(polyethylene glycol,paraffin wax and fatty acids)that are often composited with waste biomass,summarizes the construction methods of waste biomass composites as well as their applications in the fields of solar energy utilization,architectural energy saving,thermochromic textiles,cold chain temperature control,agricultural technology,etc.,and discusses the development limitations and future prospects of biomass composites.This review provides a reference for advancing the research of biomass composites,which is crucial for resource recycling as well as green and low-carbon development.
biomassphase changecompositesporous mediarenewable energy