PFI-RP: Materials and System Design for Thermal management in Asphalt Pavements Using Solar-Geothermal Energy

创新研究伙伴关系（PFI-RP）项目的更广泛的影响和商业潜力是推动一种新的具有成本效益、安全和可持续的技术，以减少路面温度的变化，从而提高路面的安全性、使用寿命和服务质量。夏季强烈的阳光或冬季的雪犁和盐/沙会损坏或退化沥青路面。拟议的建筑是这样的，在夏天，热量被收集并储存在地热井中，以防止道路软化和车辙；在冬季，热量被泵送到地面，用于清除冰雪和低温裂缝。这项技术可以用于车道、停车场、高速公路坡道和其他表面，从长远来看，还可以扩展到其他基础设施表面，包括建筑围护结构、机场和桥梁。这种针对民用基础设施关键需求的融合方法也将扩展到混合教学的课程作业中，学生招聘和外展计划将促进妇女和代表性不足群体的STEM参与和创业领导力。拟议的项目使用热交换系统将路面与地热井连接起来，通过地球的巨大热质量来调节路面表面温度。它将实验力学、材料工程、土木工程和流体系统设计结合起来，评估：1)通过双向地热能源利用的热管理进行季节性储热利用；2)适宜温度范围对铺装层寿命的延长；3)材料设计和优化，以提高全生命周期性能。利用格林函数技术模拟了系统中能量和质量随时间的传递，并通过实验进行了验证。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The broader impact/commercial potential of this Partnerships for Innovation - Research Partnerships (PFI-RP) project is to advance a new cost-effective, safe, and sustainable technology to reduce the surface temperature variation for enhancing the safety, lifespan, and service quality of pavements. Asphalt pavements are damaged or degraded by strong summer sunlight or winter snow plows and salts/sands. The proposed architecture is such that in summer, heat is harvested and stored in geothermal wells to prevent road softening and rutting; in winter, the heat is pumped to the surface for ice/snow removal and low-temperature crack mitigation. This technology can be used in driveways, parking lots, highway ramps, and other surfaces, and in the longer term can be extended to other infrastructure surfaces, including building envelopes, airports, and bridges. This convergent approach to critical needs in civil infrastructure will also be extended into coursework for hybrid teaching, and the student recruitment and outreach program will promote STEM participation and entrepreneurial leadership from women and under-represented groups. The proposed project uses a heat exchange system to connect a pavement with a geothermal heat well to regulate the pavement surface temperature by the vast thermal mass of the earth. It integrates experimental mechanics, materials engineering, civil engineering, and fluid system design to evaluate: 1) seasonal heat storage and utilization through thermal management with bi-directional geothermal energy utilization; 2) the lifespan extension of pavement overlays because of the favorable temperature ranges; 3) material design and optimization for life-cycle performance improvement. The energy and mass transfer through the system with time will be simulated by the Green’s function technique and validated by experimentally.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.