Book ChapterDOI
Micro (Mini)-Channels and Their Applications in Solar Systems
Thierno M.O. Diallo,Min Yu,Jinzhi Zhou,Yi Fan,Xudong Zhao +4 more
- pp 165-209
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TLDR
In this article, two types of micro channels, micro (mini)-tubes and micro-heat pipes, have been presented, and the performance of their use in solar systems has been illustrated by studies in the literature.Abstract:
This chapter presented micro (mini)-channels and their applications in solar systems. Two types of channels, micro (mini)-tubes and micro (mini)-heat pipes, have been presented, and the performance of their use in solar systems has been illustrated by studies in the literature. For solar thermal systems, the integration of micro (mini)-channels can increase significantly the thermal performance that achieves an increase of 28% compared to conventional channels. For PVT systems, the use of micro (mini)-channels enhances also the electrical output by decreasing the temperature of PV panels. Consequently, the use of these channels increases the overall efficiency of PVT systems that can achieve the overall efficiency of around 70%. Furthermore, in this paper, the use of micro-channel has been illustrated by the investigation of a novel solar PVT loop heat pipe employing a micro-channel heat pipe evaporator and a PCM triple heat exchanger. This illustration showed environmental parameters (i.e. solar radiation, air temperature, wind velocity), structural parameters (i.e. glazing covers, number of the absorbing heat pipes, PC cell packing factor) and the variable inputs (i.e. water inlet temperature, mass flow rate) that can influence the overall efficiency of the novel PVT system. This chapter showed that application of micro (mini)-channels in solar systems is promising, and their integration in solar technologies can enhance significantly their performance and their market share.read more
References
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Journal ArticleDOI
Evolution of Microchannel Flow Passages-Thermohydraulic Performance and Fabrication Technology
TL;DR: In this article, the authors provide a roadmap of development in the thermal and fabrication aspects of microchannels as applied in microelectronics and other high heat-flux cooling applications.
Journal ArticleDOI
An Extension of the Flow Boiling Correlation to Transition, Laminar, and Deep Laminar Flows in Minichannels and Microchannels
TL;DR: In this paper, a flow boiling correlation for large diameter tubes developed by Kandlikar [1, 2] is modified for flow boiling in minichannels by using the laminar single-phase heat transfer coefficient for all liquid flow.
Journal ArticleDOI
Heat pipes: review, opportunities and challenges
TL;DR: A detailed overview of heat pipes is presented in this paper, including a historical perspective, principles of operations, types of heat pipe, heat pipe performance characteristics, heatpipe limitations, heat pipeline frozen startup and shutdown, heat manifold analysis and simulations, and various applications of heat manifolds.
Journal ArticleDOI
Flat Miniature Heat Pipes With Micro Capillary Grooves
TL;DR: In this article, a detailed experimental and theoretical analysis on maximum heat transfer capabilities of two copper-water FMHP's with diagonal trapezoidal micro capillary grooves and one copper water FMHP with axial rectangular micro-capillary grasps is presented.
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