Heat flux varies depending on the flow cross section of the heat exchanger. To take this into account in this study, the heat exchanger is divided into 25 segments and the heat flux for each part is calculated. The amount of heat exchange assuming that the heat flux is constant within the...
where q is the local heat flux transferred from the wall to the fluid, t is the local bulk temperature of the fluid, and tw is the local wall temperature. Eq. (8.14) is in fact the definition of the heat transfer coefficient that is defined by heat flux, fluid temperature, and wall ...
This is to ensure an application tailored operating window, where varied temperature and heat flux conditions might exist [[1], [25]]. The intermediate operation of HPs like start up from frozen or high temperature gradient between evaporator and condenser, although important, are usually self-...
H. et al. Topology optimized mode conversion in a photonic waveguide fabricated in silicon-on-insulator material. Opt. Express 22, 8525–8532 (2014). 11. Chen, F. & Lei, D. Y. Experimental realization of extreme heat flux concentration with easy-to-make thermal metamaterials. Sci. Rep. ...
Tuning near field radiative heat flux through surface excitations with a metal insulator transition. Phys. Rev. Lett. 108, 234301 (2012). Article Google Scholar Du, K. et al. Control over emissivity of zero-static-power thermal emitters based on phase-changing material GST. Light Sci. Appl...
The goal of the present paper is the analysis of the power production of the WBHX in time and the comparison between two different conversion systems of the thermal energy into electrical one: the ORC plant and the Stirling motor. All the calculations have been done considering different times...
The waste heat recovery unit is one of the most important units in the chemical process. It recovers waste heat from the exhaust gas of the process resulti... P.,Bumroongsri,W.,... - 《Experimental Heat Transfer A Journal of Thermal Energy Generation Transport Storage & Conversion》 被引...
Accurate assessment of the storage heat flux (Q), the rate of sensible heat flow (per unit area) into or out of the elements comprising the urban canopy la... VJ Anderson - 《Ams Annual Meeting》 被引量: 0发表: 0年 HEAT STORAGE TYPE HEATING DEVICE WITH EXTERNAL DATA COLLECTING FUNCTION...
At low Reynolds number, the molecular flux dominates the convective thermal flux. This leads to the thermal boundary layer to be much thicker at particle Reynolds number of 0.1. As the gap width between the sphere surface and the pipe wall decreases with increasing blockage ratio, and the ...
In one work, it was shown that the change in Nusselt number for variable fluid properties, compared to constant fluid properties, was 10%, even at a relatively low heat flux of 30 W cm−2 [18]. The general design methodology (see Section 4.2.2) of micro-HEX are similar to ...