In this report, a novel magnetic levitated bearing suitable for Vertical Axis Wind Turbines (VAWT) is introduced, fabricated and tested. The bearing system generates a magnetic force, which can support the weight of the wind turbine rotor. A Finite Element Method (FEM) simulation shows how low...

High temperature superconductors (HTSs) have brought the prospect of a revolutionary lossless electric power grid a major step closer to reality. Developing highly reliable, highly efficient, and economical cryocoolers for use with HTS devices is now an urgent necessity. In this paper, a...

In this paper, a double-acting thermoacoustic Stirling electric generator is proposed as a new device capable of converting external heat into electric power. In the system, at least three thermoacoustic Stirling heat engines and three linear alternators are used to build a multiple-cylinder...

Traveling-wave thermoacoustic heat engine is a special device capable of converting external heat to acoustic work with high reliability and high potential efficiency. By coupling with a linear alternator, it can be further developed as a new kind of electricity generator called the...

This article presents a modified free-piston Stirling heat engine configuration in which a thermal buffer tube is added to sandwich between the hot and cold heat exchangers. Such a modified configuration may lead to an easier fabrication and lighter weight of a free piston. To analyze the...

A thermoacoustic heat engine (TAHE) is one kind of new power system which can simply convert heat into mechanical power in forms of acoustic wave without any moving mechanical components. This article focuses on using variable acoustical load method to study the energy conversion characteristics...

In order to utilize the waste heat efficiently for a gas engine-driven heat pump running in a cooling mode, this paper studies two combined absorption/compression refrigeration cycles using ammonia and water as the working fluid. By analyzing the operating characteristics of the combined cycles...

In building management systems, the fault-free data are usually available while the fault data are generally insufficient. The fault detection task can be considered as a typical one-class classification problem, which aims to differentiate the fault-free data class from all other possible fault...