The cycle frosting and defrosting performance of two types of microchannel heat exchangers were investigated. All the processes were observed using a CCD camera to better understand the cycle frost mechanism. Ice blockage formed in the fin root gaps of the horizontal-tube sample because of water...

Aiming at developing exhaust gas-driven automobile air conditioners, two types of systems varying in heat carriers were preliminarily designed. A new hydride pair LaNi4.61Mn0.26Al0.13/La0.6Y0.4Ni4.8Mn0.2 was developed working at 120–200°C/20–50°C/−10–0°C. P-C isotherms and reaction...

This paper nests a continuous-time learning model Jovanovic (1984) into a directed on-the-job search framework. We prove that the socially efficient allocation is separable, i.e., the workers' value functions and optimal controls are independent of both the distribution of workers across their...