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.
This means that 20 micro-channel heat pipes represent an optimal micro-channel number. Influence of the micro-channel heat pipe number on the efficiency Influence of micro-channel the heat pipe number on the PV cell temperature and the outlet water temperature
Micro-channel heat pipes are defined as a heat pipe with hydraulic diameter in the range of 10–200 mm [ 3] and mini-channel heat pipes (MHPs) with a hydraulic diameter in the range of 0.5–5 mm [ 4 ]. For hydraulic diameter superior to 5 mm, they are defined as conventional.
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%.
The flat micro-heat pipe arrays were inserted into the evacuated tube. The micro-channels are rectangular with wall fins to improve the heat transfer (Fig. 9 ). They found that the instantaneous efficiency can reach 68%, depending on the solar radiation, air volume flow rate, and ambient temperature.
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.
The experiments study of a water-cooled PV-STEG system based on flat plate microchannel heat pipe (FPMCHP) was performed under laboratory conditions by Shittu et al. . The findings pointed out that compared to the reference PV layout, the output energy of the examined system was significantly enhanced.
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.
This paper aims to experimentally investigate a novel solar Micro-Channel Loop-Heat-Pipe Photovoltaic/Thermal (MC-LHP-PV/T) system which, making its first attempt to employ the co-axial...
This paper aims to experimentally investigate a novel solar Micro-Channel Loop-Heat-Pipe Photovoltaic/Thermal (MC-LHP-PV/T) system which, making its first attempt to employ the co …
The performance of a heat pipe based solar PV/T roof collector and its potential contribution in district heating applications. Energy, 2017, 136: 117–125. Article Google Scholar Li H., Sun Y., Operational performance study on a photovoltaic loop heat pipe/solar assisted heat pump water heating system. Energy and Buildings, 2018, 158: 861–872.
Heat collection unit (HCU) is the key component to absorb solar radiation energy and transfer the heat energy to the TPCT. It consists of multiple microheat pipe array flat-plate solar collectors ...
This research aims to develop a novel, high efficiency, low cost, and building integrate-able PV/micro-channel loop heat pipe system which can make effective use of solar energy for space heating, hot water and power generation and thus remove certain barriers remaining within the existing Photovoltaic/Thermal (PV/T) technologies. The new PV/T system …
In this paper, a novel solar concentrating thermoelectric generation using micro-channel heat pipe array (STEG-MCHP) was presented. The flat-plate micro-channel heat pipe array not only has a higher heat transfer performance than the common heat pipe, but also can be placed on the surface of TEG closely, which can further reduce the ...
One of the efficient active techniques for cooling PV cells is making use of microchannels for circulation of coolants inside it. This article reviews the research works implemented on the use of microchannels as thermal management unit of PV cells.
In this paper, a novel solar concentrating thermoelectric generation using micro-channel heat pipe array (STEG-MCHP) was presented. The flat-plate micro-channel heat pipe …
This paper aims to experimentally investigate a novel solar Micro-Channel Loop-Heat-Pipe Photovoltaic/Thermal (MC-LHP-PV/T) system which, making its first attempt to employ the co-axial tubular heat exchanger as the condenser, PV-bound multiple micro-channel tubes array as the PV/evaporator, the upper end liquid header with tiny ...
This study presents a numerical analysis of the energy efficiency for a novel solar PVT Loop Heat Pipe (PVT-LHP) employing a novel Micro-channel evaporator and a novel PCM heat storage exchanger. It presents a description of the different sub-models in the PVT-LHP system (the PVT model, the microchannel heat collector model and the novel PCM triple …
The flow pattern in the microchannel heat pipe can also impact the PVT performance, Valeh-e-Sheyda et al. ... Thermal resistance of heat pipe wall, R hp, Heat transfer through the heat pipe wall is a typical steady-state conduction process, and its thermal resistance can be written as: (6) R hp = e hp k hp (2 × (a + b) × L hp) N hp. Thermal resistance of …
Photovoltaic Trombe wall (PV-TW) is an effective way to reduce a building''s energy consumption, but it still has disadvantages such as low energy efficiency and uneven indoor temperature distribution. To address these issues, a novel system with a PV-TW and a micro-channel heat pipe (MCHP) was initially presented in this research.
This paper aims to experimentally investigate a novel solar Micro-Channel Loop-Heat-Pipe Photovoltaic/Thermal (MC-LHP-PV/T) system which, making its first attempt to employ the co-axial tubular heat exchanger as the condenser, PV-bound multiple micro-channel tubes array as the PV/evaporator, the upper end liquid header with tiny holes as the liquid …
Hybrid photovoltaic-thermal heat pump (PV/T-HP) solar energy systems are promising since they can achieve a system total efficiency greater than 80%. By maximizing the output of a PV/T system for… The method to cool a high heat flux device is an important research direction for the heat exchanger design.
This paper aims to experimentally investigate a novel solar Micro-Channel Loop-Heat-Pipe Photovoltaic/Thermal (MC-LHP-PV/T) system which, making its first attempt to employ the co-axial tubular heat exchanger as the condenser, PV-bound multiple micro-channel tubes array as the PV/evaporator, the upper end liquid header with tiny holes as the ...
The application of batteries has become more and more extensive, and the heat dissipation problem cannot be ignored. Oscillating Heat Pipe (OHP) is a good means of heat dissipation. In this paper, the methods to …
This paper aims to experimentally investigate a novel solar Micro-Channel Loop-Heat-Pipe Photovoltaic/Thermal (MC-LHP-PV/T) system which, making its first attempt to …
As shown in Fig. 14b, Li et al. [129, 130] proposed a photothermal power generation technology with microchannel heat pipe (MCHP) arrays to achieve a higher heat transfer performance; after ...
Photovoltaic Trombe wall (PV-TW) is an effective way to reduce a building''s energy consumption, but it still has disadvantages such as low energy efficiency and uneven …
In this paper, the conceptual development and theoretical analysis of a novel micro-channel heat pipe evacuated tube solar collector-incorporated thermoelectric generation are all...
Request PDF | On Sep 29, 2019, Guiqiang Li published Experimental Investigation of a Novel Solar Micro-Channel Loop-Heat-Pipe Photovoltaic/Thermal (MC-LHP-PV/T) System for Heat and Power ...
For solar thermal systems, the integration of micro (mini)-channels can increase significantly the thermal performance that achieves an increase of 28% compared to …
One of the efficient active techniques for cooling PV cells is making use of microchannels for circulation of coolants inside it. This article reviews the research works …
In this paper, the conceptual development and theoretical analysis of a novel micro-channel heat pipe evacuated tube solar collector-incorporated thermoelectric generation …
Comparative study of simultaneously analyzing various solar power generation systems is conducted. The operation factors of solar radiation, ambient temperature, and condenser side temperature are investigated. Nanofluid-heat pipe considering the real flow situation is introduced as the heat dissipator.
Comparative study of simultaneously analyzing various solar power generation systems is conducted. The operation factors of solar radiation, ambient temperature, and …
Request PDF | On Nov 1, 2018, Thierno M O Diallo and others published Energy performance analysis of a novel solar PVT loop heat pipe employing a microchannel heat pipe evaporator and a PCM triple ...
Hybrid photovoltaic-thermal heat pump (PV/T-HP) solar energy systems are promising since they can achieve a system total efficiency greater than 80%. By maximizing …
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