Ground thermal energy as a clean and sustainable energy source has received significant attention lately. Several strategies and hybrid configurations have been proposed to harvest geothermal energy for air conditioning and industrial purposes. The possibility of moist soil freezing in the vicinity of borehole tubes is known to be the source of several benefits and difficulties. The high storag...

Having a large surface area, high mechanical strength, excellent electrical and thermal properties, graphene is attractive for a wide range of potential applications, including energy conversion and storage. To realize commercial reality of graphene-based energy devices, it is highly desirable to produce high-quality graphene at a low cost and large scale. In this review, we will give an overvi...

This paper focuses on the design of a Stirling engine for distributed solar thermal applications. In particular, we design for the low temperature differential that is attainable with distributed solar collectors and the low cost that is required to be competitive in this space. We will describe how these considerations drive the core design, the methodology for improving the design, and summar...