High-efficiency fast fill of compressed natural gas

作为燃烧最清洁、碳排放最低的化石燃料，天然气是全球能源讨论的核心。鉴于日益增长的能源需求和与传统化石燃料相关的高温室气体（GHG）排放，运输部门是天然气的关键市场。压缩天然气（CNG）加气站已经建成，可以像在加油站给传统汽车加油一样快地为天然气汽车（NGV）加油。在快速充注过程中，由于温度升高较大，CNG气瓶只能充注到额定容量的80%以下。燃油效率有限，导致车辆续驶里程减少，严重阻碍了ngv的广泛应用。作为重型车辆CNG燃料系统的领先供应商，Agility fuel systems正在寻找一种创新的解决方案，将CNG的加注量提高10%以上。此外，该解决方案需要最小的额外重量和低功耗，因此可以轻松集成到CNG燃料系统中。凭借热管理和流量控制方面的专业知识，UBC Okanagan的电子冷却实验室（Dr. Sunny Li）和计算流体动力学实验室（Dr. Joshua Brinkerhoff）正在与Agility合作解决这一工程问题。此次合作的目标是开发一种散热系统，可以在气瓶填充时有效地从气瓶内排出热量。将进行实验、分析和数值研究，以调查CNG填充的热问题，并设计、测试和优化散热系统。该项目将增加CNG在加拿大运输部门的渗透，从而提高能源效率并减少温室气体排放。它将为加拿大的可持续能源和环境的未来带来重大贡献。它将加强加拿大在全球NGV市场的竞争力。它符合加拿大支持工业竞争力的议程，并支持加拿大的环境保护目标。

As the cleanest-burning and lowest-carbon fossil fuel, natural gas is at the heart of energy discussions across the world. Given the increasing energy demand and high greenhouse gases (GHG) emissions associated with conventional fossil fuels, the transportation sector is a key market for natural gas. Compressed natural gas (CNG) stations have been built to fill natural gas vehicles (NGV) as fast as fueling conventional vehicles at gasoline stations. Due to significant temperature rise during fast fill, CNG cylinders can be filled only to less than 80% of rated capacity. The limited fill efficiency and the reduced vehicle driving range that results is a serious obstacle to the widespread adoption of NGVs.As the leading provider of CNG fuel systems for heavy duty vehicles, Agility Fuel Systems is looking for an innovative solution to increase CNG fill by more than 10%. Additionally, minimum added weight and low power consumption are required so that the solution can be easily integrated into CNG fuel systemsWith expertise in thermal management and flow control, the Electronics Cooling Lab (Dr. Sunny Li) and Computational Fluid Dynamics Lab (Dr. Joshua Brinkerhoff) at UBC Okanagan are collaborating with Agility to solve this engineering problem. The collaboration aims to develop a heat rejection system that can efficiently remove heat from inside CNG cylinders while the cylinders are being filled. Experimental, analytical, and numerical research will be carried out to investigate the thermal issues of CNG fill, and design, test, and optimize the heat rejection system.The project will increase the penetration of CNG into the Canadian transportation sector, thereby increasing energy efficiency and reducing GHG emission. It will bring significant contribution to Canada's sustainable energy and environment future. It will strengthen Canada's competitiveness in the world-wide NGV market. It fits into Canada's agenda to support industry competitiveness and supports Canada's aims for environmental protection.