A global modeling method is developed to describe the relationship between multi-type parameters and fuel cell performance, which significantly contributes to efficient performance prediction of fuel cell system. The multi-type parameters include operating parameters, geometric parameters of the...

The heliostat field efficiency is vital for solar power tower (SPT) plants. But the heliostat field efficiency decreases rapidly with increasing capacity, limiting the development of large-scale SPT plants. In this paper, we developed a system that couples trough collectors on the basis of an...

This paper attempts to categorize solar stills into six sorts based on the design guidelines used in each device. The properties of these design guidelines are detailed and evaluated from the angle of enhancing the productivity of solar stills. Preferred design guidelines are recommended for...

This paper investigates the effects of shareholder protection law on corporate R&D investment. I find that the institutional protection of shareholder benefits reduces both underinvestment and overinvestment in R&D projects. Legal shareholder rights significantly increase R&D investment for...

A Lambertian CCD-camera method is convenient to measure concentrating radiation fluxes, where a crucial factor, a calibration factor, always varies with spectra and brings errors. In this paper, a new calibration method is proposed based on spectral normalization calculation and tries to reduce...

Oscillating flows have fundamental effects on the heat and mass transfer of Stirling engines and gas springs. A complex velocity model was proposed to describe the fully-developed laminar oscillating flow through introducing complex functions and simplified control equations. The maximum...

A solid-particle solar receiver was proposed to convert concentrated solar beams into heat for high-temperature thermal storage in a two-stage dish system. Spherical Xe-arc lamps were used to simulate a solar light source. The performances of this receiver under a Xe-arc lamp array system were...

From August 2005 to December 2008, a total of 54 warrants were issued in China. Trading in China's warrant market was extremely active — on a daily basis, turnover often exceeded one. Using three standard pricing models, we document that put warrant market prices averaged 1.2 yuan more than...