HEAT PIPE SIMULATION UNDER CRITICAL CONDITIONS

Turbulent bubbly flow in pipe under gravity and microgravity conditions

Heat Pipe Planets

pheric and Planetary Sciences, Hampton University, Hampton, Virginia 23668, USA ([email protected]). National Institute of Aerospace, Hampton, Virginia 23666, USA. Center for Isotope Cosmochemistry and Geochronology, ARES, NASA-JSC, Houston, TX 77058, USA ([email protected]). Department of Geology and Geophysics, Louisiana State University, Baton Rouge, Louisiana 70803, USA (aagwebb@g...

Simulation of Hybrid Photovoltaic Solar Assisted Loop Heat Pipe/Heat Pump System

A hybrid photovoltaic solar assisted loop heat pipe/heat pump (PV-SALHP/HP) water heater system has been developed and numerically studied. The system is the combination of loop heat pipe (LHP) mode and heat pump (HP) mode, and the two modes can be run separately or compositely according to the weather conditions. The performances of independent heat pump (HP) mode and hybrid loop heat pipe/hea...

Thermal performance of a flat polymer heat pipe heat spreader under high acceleration

This paper presents the fabrication and application of a micro-scale hybrid wicking structure in a flat polymer-based heat pipe heat spreader, which improves the heat transfer performance under high adverse acceleration. The hybrid wicking structure which enhances evaporation and condensation heat transfer under adverse acceleration consists of 100 μm high, 200 μm wide square electroplated copp...

Critical Heat Flux Measurement and Model for Refrigerant-123 under Stabilized Flow Conditions in Microchannels

The present work is aimed toward understanding the effect of flow boiling stability on critical heat flux (CHF) with Refrigerant-123 (R-123) in microchannel passages. Experimental data and theoretical model to predict the CHF are the focus of this work. The experimental test section has six parallel microchannels with each having a cross sectional area of 1054 × 157 μm 2 . The effect of flow in...