The coefficient model of small scale thermal mechanical dispersion of saturated porous aquifer is established and it is applied in the heat transfer process of convective dispersion. Step-by-step test is conducted for the two physical processes of one-dimensional unsteady heat conduction of...

We show that thermoelectrics can generate power from environments experiencing temporal temperature fluctuations; this source of power is useful for low-power devices in remote locations. We design and characterize devices that employ a thermoelectric module sandwiched between two heat...

In the design of solar air heaters (SAHs), channel depth is a principal variable to be fixed. In this paper, the effect of the channel depth on the energy gain of type I and type III SAHs has been investigated by computational fluid dynamics (CFD) simulations. Laminar model and k–ω turbulence...

Heat transfer in wall-flow monoliths has gained in interest because of the widespread adoption of these systems by automotive industry to fulfil soot emission regulations and the importance of heat exchange on the regeneration process control to avoid damaging the monolith. This paper presents a...

The circulating fluidized bed is of increasing importance for gas–solid and gas–catalytic reactions, for drying, and recently its use in solar energy capture and storage has been advocated. In all applications, the supply or withdrawal of heat is a major issue, and the heat transfer...

Solar thermochemical processing offers production of many fuels and commodities via reduced emission footprint. Although solar reactor design and flow configuration play a key role in process efficiency, use of the right catalyst further enhances the overall efficiency. Solar cracking of methane...

Demands to increase performance of modern heat exchange systems are constantly being made. Typical requirements include the removal of larger amounts of energy or the development of process units that occupy a smaller unit footprint. Vipertex™ 1EHT enhanced surfaces have been designed and...

This paper presents a case study of recovering the waste heat of the exhaust flue gas before entering a flue gas desulphurizer (FGD) in a 600 MW power plant. This waste heat can be recovered by installing a low pressure economizer (LPE) to heat the condensed water which can save the steam...

The possibility of using magnesium based eutectic metal alloys as phase change material (PCM) for thermal energy storage (TES) in concentrated solar power (CSP) applications is analysed. An extensive thermophysical characterization of the Mg–51%Zn eutectic metal alloy between room temperature...

The heat transfer and entropy generation in the parallel plate flow of a power-law fluid are analyzed. Asymmetric convective cooling is included in the analysis by considering thermal boundary conditions of the third kind. Using the known velocity profile, the temperature field is analytically...