Publications (10)
Measurement and Analysis of Thermal Conductivity of Ceramic Particle Beds for Solar Thermal Energy Storage
Ka Man Chung, Jian Zeng, Sarath Reddy Adapa +6
A systematic study was performed to measure the effective thermal conductivity of ceramic particle beds, a promising heat transfer and thermal energy storage media for concentratin…
Heat Transfer Coefficients of Moving Particle Beds from Flow-Dependent Particle Bed Thermal Conductivity and Near-Wall Resistance
Sarath R. Adapa, Xintong Zhang, Tianshi Feng +5
Determination of heat transfer coefficients for flowing packed particle beds is essential to the design of particle heat exchangers, and other thermal processes. While such dense g…
Micromechanical Origin of Heat Transfer to Granular Flow
Xintong Zhang, Sarath Adapa, Tianshi Feng +5
Heat transfer to a granular flow is comprised of two resistances in series: near the wall and within the bulk particle bed, neither of which is well understood due to the lack of e…
Thermoelectrically Elevated Hydrogel Evaporation for Personal Cooling under Extreme Heat Stress
Yu Pei, Tianshi Feng, Robert Chambers +2
Extreme heat events with wet-bulb temperatures (WBT) above 35°C pose serious risks to human survival, and conventional hydrogel evaporative cooling alone may not provide sufficien…
Flexible Thermoelectric Active Cooling Garment to Combat Extreme Heat
Tianshi Feng, Jiedong Wang, Ethan Sun +2
With the increasing frequency, intensity, and duration of extreme heat events due to climate change, heat-related diseases or even mortality have become more prevalent. An efficien…
Discovery of a reversible redox-induced order-disorder transition in a 10-cation compositionally complex ceramic
Dawei Zhang, Yan Chen, Tianshi Feng +4
This study discovers a reversible order-disorder transition (ODT) in a 10-cation compositionally complex ceramic, (Nd0.15Pr0.15Dy0.8Ho0.8Er0.8Ti0.2Yb0.1Hf0.1Zr0.1Nb0.8)O7-delta, in…
In-situ Thermophysical Measurement of Flowing Molten Chloride Salt Using Modulated Photothermal Radiometry
Ka Man Chung, Ye Zhang, Jian Zeng +5
Molten salts are a leading candidate for high-temperature heat transfer fluids (HTFs) for thermal energy storage and conversion systems in concentrated solar power (CSP) and nuclea…
Thermal Conductivity Modeling of Monodispersed Microspheres using Discrete Element Method
Jian Zeng, Ka Man Chung, Xintong Zhang +4
Particle beds are widely used in various systems and processes, such as particle heat exchangers, granular flow reactors, and additive manufacturing. Accurate modeling of thermal c…
Thermal Conductivity Measurement Using Modulated Photothermal Radiometry for Nitrate and Chloride Molten Salts
Ka Man Chung, Tianshi Feng, Jian Zeng +8
Molten salts are being used or explored for thermal energy storage and conversion systems in concentrating solar power and nuclear power plants. Thermal conductivity of molten salt…
In-situ Thermal Transport Measurement of Flowing Fluid using Modulated Photothermal Radiometry
Jian Zeng, Ka Man Chung, Sarath Reddy Adapa +2
In situ thermal transport measurement of flowing fluid could be useful for the characterization and diagnosis of practical thermal systems such as fluid heat exchangers and thermal…