Greenhouse gas emission from ships is currently one of the environmental issues for shipping industry. Considering marine air conditioning system consumes much energy on board ships, and to improve its efficiency thus reduce CO2 emission, an ice thermal storage (ICE-TES) unit was designed integrated into a real ship. Four cases distinguished with shaved peak value cooling load as 4%, 8%, 12%, 16% were analyzed, increasing shaving percent integration ICE-TES could more electricity consumed...

The low thermal conductivity of phase change materials (PCMs) limits their widespread application in practical energy storage systems. integration fins has emerged as an effective approach to enhance PCM melting rates. This study numerically investigates the effects fin length and tilt angle variations on processes through two-dimensional modeling. A rectangular container with vertical constant-power heating was simulated, which incorporated natural convection effects. Initially, analysis...

A two-step electrodeposition method was applied to fabricate a microporous surface with an electrolyte solution of 1 M CuSO4, 0.5 H2SO4, and 25 mM HCl. Four copper surfaces were first electrodeposited current density from 0.55 1.25 A/cm2, the time for each 15 s. In second step, kept at concentration 50 mA/cm2 4800 The structure changed cauliflower-like honeycomb-like structure. this case, cauliflower-like-structured hydrophobic, which in great contrast results previously published similar...

To better understand the evaporation of a non-spherical droplet, two-dimensional simulation was conducted to investigate on asymmetric cross-section sessile droplets, which are characterized by two curvatures with different contact angles both sides. The temperature distribution, internal flow, and flux distribution at quasi-steady state were revealed be from spherical droplets. When heated substrate, lowest surface moves side higher curvature or larger angle, forming single vortex in...

This paper presents an experimental investigation of the evaporating behavior a water droplet on structurally heterogeneous surface. A hydrophilic surface was made multiwalled carbon nanotubes (MWCNTs); then, part it tuned to hydrophobic by restructuring it, using electrowetting method. placed across structure interface merging two droplets close interface, and its evaporation recorded from both side top views. Results show that originally appeared be asymmetric with contact angle remained...

Abstract This paper presents an experimental investigation of a miniature ejector using water as the working fluid. The investigated cooling system can utilize thermal energy to be removed power and maintain temperature electronic component below ambient temperature. effects conditions, nozzle exit position (NXP), area ratio on coefficient performance (COP) were investigated. Experimental results show that function well when in high-temperature evaporator (HTE) ranges from 55 °C 70 achieve...

Fins are favorable to improve phase change heat storage, especially for a source of low flux, like solar energy. To seek the interaction between fins and melting delay, numerical simulation was proposed study process lauric acid in square container embedded with fins, which heated flux 1 sun (1 kW/m2). The quantity, size material were considered work. results showed delay time took certain proportion total exacerbated by length, width thermal properties resulting existence optimal fin...

Typical spontaneous movement behaviors of condensate droplets include coalescence-induced jumping, gravity-driven sliding, and directional migration by wettability gradient. However, in the study humid air condensation, it is uncommon to efficiently synergize two or three enhance condensation capacity on a large surface. In this paper, droplet self-migration sliding are successfully synergized laser etching inverted trapezoidal superhydrophilic channels upper half 40×80 mm2 quasi-liquid...

Abstract In this article, in order to optimize diesel aftertreatment system with periodically reciprocating flow (PRF), an experimental study is conducted investigate its characteristics such as pollution emissions, regeneration of particulate filter (DPF), concentration, and size distribution matter (PM) escaped well temperature under unidirectional PRF operating conditions. The effects cycle exhaust gas on the performance are investigated detail. energy efficiency analysis also carried...

Spray evaporation desalination technology has the potential to improve performance of thermal plants and make more competitive appealing. For a better understanding seawater process, mathematic model been presented with consideration motion, heat transfer droplet, evaporator based on droplet analysis. The validated against experimental data, simulation results showed good agreement experiments discrepancy below 10%. can be used evaluate water productivity utilization accurately, which are...

Abstract When a droplet resting on surface, its shape can be nonspherical or asymmetrical due to the surface heterogeneity, and temperature evaporation flux may distribute asymmetrically during process thereafter. The of sessile was simulated regarding heat mass transfer in this paper, which consists part spherical cap an ellipsoidal cap. Due shape, temperature, saturated vapor concentration asymmetrically. average are higher at ellipsoid side, but is sphere side. Furthermore, bigger...

Heat storage is a promising method to enhance the utilization efficiency of new energy by providing stable heat supply drawn from discontinuous source. Regarding disadvantages phase change materials, such as supercooling solidification and low conductivity, four novel composite materials (CPCMs) based on sodium acetate trihydrate (SAT) were developed experimentally studied. The CPCMs made 3.0 wt.% carboxyl methyl cellulose (CMC) working thickener, γ-Al2O3, NaCl, carbon nanotube (CNT), NaCl...