Thermal economic analysis of a double-channel solar air collector
The solar air collector, as a kind of solar heating device with air as a medium, has the advantages of simple structure, easy manufacture and maintenance, no freeze-proof, and
Thermal economic analysis of a double-channel solar air collector
Experimental results indicate that, with an air mass flow rate of 0.03 kg/s, the dual-mode collector (named as PT-RC collector) realized a daytime solar thermal efficiency of
THERMAL ANALYSIS OF SINGLE AND DOUBLE-PASS SOLAR AIR COLLECTORS
Five critical parameters may have influence on the thermal performance of a solar air collector with one pass: (1) heat transfer resistance in the airflow channel, (2) height of the
Research advances in solar dryer technologies integrated with solar air
This is necessary because a laminar sub-layer naturally forms over the absorber plate, Air passes through the collector only once. Double-pass solar air heaters: ranging
Numerical Simulation Investigation of a Double Skin Transpired Solar
Transpired solar collectors (TSC) are one of the most popular solar thermal technologies for building façades. TSC use solar energy to heat the absorber surface, which
Numerical and experimental study of laboratory and full-scale
The collector was also applied to the solar greenhouse in Urumqi, and the results illustrate that: From November 2015 to February 2016, when the collector length is 16 m and
Extending the operation of a solar air collector to night-time by
Experimental results indicate that, with an air mass flow rate of 0.03kg/s, the dual-mode collector (named as PT-RC collector) realized a daytime solar thermal efficiency of
Performance analysis on the concentrated photovoltaic /thermal air
The solar air collector includes vacuum double-glazing, PV module, absorber plate, air flow channel, PCM layer and thermal insulation layer arranged from top to bottom, as
(PDF) Numerical model and efficiency analysis of finned staggered solar
This paper introduces a novel design for a solar PV/T air collector that utilizes staggered fins. The collector features double-layer flow channels in the same direction, with
Energetic and exergetic analysis of a new double pass solar air
The design of the collector was made to maximize the heat transfer and thermal energy utilization. Double pass solar air collectors allow for air to flow above and below the
Solar PV/T air collector: (a) Collector structure drawing; (b
This paper introduces a novel design for a solar PV/T air collector that utilizes staggered fins. The collector features double-layer flow channels in the same direction, with the upper channel
A new operating model for improving thermal efficiency of double
To improve the overall thermal efficiency of the heat storage type solar air collector, an experimental study is conducted on a double-glazed solar air-PCM collector. The
Performance investigation of a novel flat-plate solar air collector
To improve the thermal performance of flat-plate solar air collectors and address the trapped heat in the evaporation section, this paper proposed a structural innovation of L
Structure of solar air collector. | Download Scientific
... shown in Figure 1, the solar air collector mainly consists of three parts, the absorber plate, the insulation and the double-layer transparent plate with honeycomb inside. The...
Modelling thePerformanceof DoublePassSolar Air Collectors
This study presents a detailed investigation into the thermal performance of double-pass solar air collectors (DPSACs) through a combination of experimental testing and theoretical modelling.
A new operating model for improving thermal efficiency of double
Fig. 1 is the photograph and internal structure of the double-glazed solar air-PCM collector. As shown in the figure, the solar collector is composed of the outer glass, air cavity,
Multi-objective optimization design of solar air collector with a
Multi-objective optimization design of solar air collector with a frustum-shaped protrusion. Author [12] designed a double-pass solar air heater (DPSAH), which was
(PDF) Systematic review of solar air collector technologies
A solar air collector (SAC) is a main device of a solar-thermal air system, which can absorb solar radiation and transfer the absorbed thermal energy to the air.
Review on the structure and application of solar
The theoretical and experimental research of solar photovoltaic air collector in improving photoelectric/photothermal conversion efficiency is analyzed, the current application scenarios and advantages of solar
Review on the structure and application of solar photovoltaic air collector
Two models of solar photovoltaic air collectors with different photovoltaic cell placement (Wu et al. 2019).
Review on the structure and application of solar photovoltaic air collector
Figure 1. Improved PV/T solar air collector (Saygin et al. 2017). Figure 2. Two models of solar photovoltaic air collectors with different photovoltaic cell placement (Wu et al. 2019).
Thermal performance of plate type solar Air/Water composite collector
Existing thermal performance study of tablet solar air collector have mainly focused on the structural parameters of the collector itself [11], [12], [13], [14].Ye Wang et al [15]. enhanced
Enhancing thermal efficiency of double-pass solar air collectors:
This study investigates the enhancement of thermal efficiency in double-pass solar air collectors (DPSACs) by incorporating V-angled perforated fins.
Thermal modeling of air-type double-pass solar collector with
Therefore, this study integrates PCM and ETSC and proposes a new geometric structure of an air–type double–pass evacuated tube collector with a PCM–rod embedded in a
Review on the structure and application of solar photovoltaic air collector
2. Numerical simulation of solar photovoltaic air collector. Most studies in this field focus on mathematical models and simulations, and the electrical, thermal and exergic
Optimizing double-pass solar air collector efficiency:
The current study evaluates the impact of newly designed perforated discrete V-angled fins on the thermal efficiency of double pass solar air collectors (DPSACs).
Thermal performance and optimization of an integrated collector
The integration of thermal storage materials with solar thermal utilization can address this issue [2].Khalifa and Abdul Jabbar [3] integrated paraffin wax as a phase change
NUMERICAL MODEL AND EFFICIENCY ANALYSIS OF FINNED
The collector features double-layer flow channels in the same The main objectives of this work are to: (1) propose a new solar PV/T air collector structure design; (2) add the
A review on solar flat plate air collector with different design
double-pass solar air collector showed 16.5% to 66.5% higher efficiency than that of single-pass solar air stagnant air layer height, transmittance of top plate, conductivity of back plate and
Thermal and optical performance analysis of triangular solar air
Solar collectors can be divided into solar water collectors and solar air collectors (SAC), compared with the solar water collector, SAC has the following advantages (Dong et
Energetic and exergetic analysis of a new double pass solar air
Advanced solar air collectors are widely implemented in research for drying purposes. This research study presents a new steady state energy balance and exergy
Enhancing thermal efficiency of double-pass solar air collectors:
This configuration reduced heat loss by 10.7–23.3 % in discrete fin structures and 6.7–19.5 % in continuous fin structures. Two Double-Pass Solar Air Collectors
Research on single layer quasi-ordered air vortex inside flat plate
This article studied the heat dissipation problem caused by air flow inside the flat plate solar collector cavity, and the air forms the single layer quasi-ordered vortex. Which is similar
6 FAQs about [Double-layer solar air collector structure]
What is a solar air collector (SAC)?
A solar air collector (SAC) is a main device of a solar-thermal air system, which can absorb solar radiation and transfer the absorbed thermal energy to the air. This paper presents a systematic review of three basic types of SAC, namely, the flat-plate SAC (FPSAC), the evacuated tube SAC (EVTSAC), and the concentrated SAC.
Do solar air collectors have a bibliometric network?
A bibliometric network on solar air collector studies has been provided. The flat-plate, evacuated tube and concentrated type collectors have been reviewed. Advanced topology designs of solar air collector configuration have been analyzed. Different enhancement technologies used in solar air collectors are reported.
Can solar air collectors improve heat transfer technologies?
In particular, the enhanced heat transfer technologies by using a highly efficient heat transfer component (heat pipe, etc.) have been reported. Based on the analysis of the existing solar air collectors studies, this study provides a perspective for researchers to further and better study SAC technologies. The main conclusions can be drawn as:
Can solar air collectors be used as a research parameter?
The yield of solar air collectors based on geographical and solar radiation conditions can be used as a further research parameter and application boundary conditions of SACs. At the same time, combing with local energy policies, elaborating its economic details or energy savings and providing emission reduction information are suggested.
Which concentrating solar collectors have the highest thermal efficiency?
Among the concentrated SACs, the linear concentrating solar collectors with an open Brayton cycle reached a highest outlet temperature of 350 °C corresponding to 75 % thermal efficiency. Optimization design of the concentrated SACs needs to be modified according to the certain applications and required temperature ranges.
How does a solar reflector work?
Except for the direct solar radiation, the receiver can also obtain almost all the solar radiation reflected by the reflector on it, thereby multiplying the total solar radiation received by the SAC and subsequently increasing the outlet air temperature.