Experimental and theoretical investigation of dual purpose solar collector

Assari, Mohammad Reza; Tabrizi, Hassan Basirat; Jafari, Iman

doi:10.1016/j.solener.2011.01.006

Cited by 32 publications

(14 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is concluded that the mode C has better solar thermal utilization. water decreases, and the efficiency for air begins to rise, the same results were obtained by Assari MR et al [17]. The maximum total thermal efficiency can achieve 86.1%, and the average value in the test period is 73.4%.…”

Section: Analysis Of Mode Csupporting

confidence: 83%

“…[16,17], the maximum efficiency for both air speeds of 2.8 and 3.2 m/s occurs at solar noon which are equal to 81.99% and 82.4%, respectively [16]. The performance of systems with an assumption of solar flux radiation 900 W/m 2 , water mass flow rate of 0.02 kg/s and air flow rate of 0.1 kg/s is up to 78% [17]. The results obtained from present work and previous research show that dual purpose systems can achieve greater efficiency and lower heat dissipation.…”

Section: Analysis Of Mode Cmentioning

confidence: 99%

“…The studies about air-water compound heating that can supply hot air and water simultaneously were not enough. On the other hand, the thickness of the dual-function collectors reached 8~14 cm higher than that of the flat plate liquid solar collector in order to improve the thermal performance [15][16][17], which resulted in a higher cost. The research results are not easy to industrialize due to a long design time and high cost, which were carefully considered by the designer, producer and the potential ender user [19].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal performance investigation of modified flat plate solar collector with dual-function

Dong

Gao³

et al. 2016

Applied Thermal Engineering

View full text Add to dashboard Cite

A flat plate solar collector with dual-function was proposed, which was modified from the conventional liquid solar collector. Three working modes were presented, named (A) air heating, (B) water heating and (C) air-water compound heating. Mathematical models for air and water heating modes were developed to investigate the effect of mass flow rate on the thermal performance. An experimental setup was established in order to test the actual performance of collector. The experimental results show that the average collector efficiency in mode A and B can achieve 51.3 % and 51.4 % while the mass flow rate of fluid is 0.024 kg/s and 0.13 kg/s, respectively. The maximum temperature rise of air and water reach 60.4 ℃ and 59.8 ℃ in the respective two modes. The average of total collector efficiency based on the mode C can reach 73.4 %, higher than that of mode A or B. The mass flow rate is a major factor to affect the efficiency, outlet temperature of fluid and heat transfer effectiveness. When the water flow rate exceeds 0.10 kg/s, the heat removal factor increases insignificantly. To balance the efficiency and outlet temperature of fluid, the air flow rate between 0.02 kg/s and 0.025 kg/s is recommended in mode A and the water flow rate between 0.06 kg/s and 0.08 kg/s is recommended in mode B.

show abstract

Section: Analysis Of Mode Csupporting

confidence: 83%

Section: Analysis Of Mode Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal performance investigation of modified flat plate solar collector with dual-function

Dong

Gao³

et al. 2016

Applied Thermal Engineering

View full text Add to dashboard Cite

show abstract

“…Many works have been undertaken with the dual-function solar collectors by a number of researchers. To give a brief, Assari et al [6] and Nematollahi et al [7,8] reported on the thermal performance of a dual purpose solar collector while two fluids (water and air) in the collector flow simultaneously, indicating that better performance can be obtained compared to single purpose collector. Ji et al [9] and Ma et al [10] performed the performance of dualfunction solar collector experimentally and theoretically and obtained good thermal performance in both air heating mode and water heating mode.…”

Section: Introductionmentioning

confidence: 99%

CFD and comparative study on the dual-function solar collectors with and without tile-shaped covers in water heating mode

Hong

Luo

et al. 2016

Renewable Energy

View full text Add to dashboard Cite

a b s t r a c tThis paper presents a dedicated study of a novel tile-shaped dual-function solar collector in water heating mode by using computational fluid dynamics (CFD). This system employs a modular panel incorporating tile-shaped covers that is able to serve as part of building pitched roof, thus creating a building integrated, highly efficient and aesthetically appealing solar heating structure, particularly suitable for the Chinese traditional buildings. A complete 3D CFD model was developed. The numerical prediction was validated using experimental data. It was found that the established model is able to predict the operational performance of the system at reasonable accuracy. With the specified system structure, the efficiency of the solar system was found to be a function of its operational conditions. The results indicated that lower inlet water temperature, higher water flow rate, higher ambient air temperature and lower solar radiation led to enhanced thermal efficiency of the module. Further, the performance of the dual-function solar collector with and without tile-shaped covers was comparatively studied. It was found that the tile-shaped collector is able to achieve higher efficiency at higher temperature operation. This work outlines the impacts of the main operational conditions to the tile-shaped dual-function solar collector's efficiency.

show abstract

“…All of the above research has been done on single‐purpose, like water‐ or air‐type, solar collectors. Assari et al established a new dual‐purpose solar collector to heat air and water simultaneously. Jafari et al studied the energy and exergy analysis on a dual‐purpose solar collector using the NTU method.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of single‐ and dual‐purpose corrugated plate solar collector by force convection

Pathak

Prakash

Raj

2019

Heat Trans. Asian Res.

View full text Add to dashboard Cite

An experimental analysis of dual‐purpose corrugated plate solar collector (DPCPSC) is used to heat water and air simultaneously. Three types of corrugated plate solar collectors (CPSCs) were presented: namely single purpose corrugated plate solar collector (SPCPSC), only water heating of aluminum absorber plate (SPCPSC 1) and copper absorber plate (SPCPSC 2) and DPCPSC type water‐air compound heating of aluminum based absorber plate. In this experimental investigation, the comparative analysis of SPCPSC 1 and 2 at mass flow rate (MFR) of water was 0.025 kg/s (case 1 and 2) and 0.04167 kg/s (case 3 and 4), DPCPSC at MFR of air was 0.011 kg/s while MFR of water was 0.025 kg/s (case 5) and 0.04167 kg/s (case 6), respectively, and DPCPSC at MFR of water and air were 0.04167 and 0.023 kg/s, respectively (case 7), are analyzed. The results indicate that the efficiency of the DPCPSC, of case 6 is 16.74% higher than single purpose system that of case 3 and 6.65% also that of case 4. Comparing the DPCPSC, the optimum efficiency of case 7 is 8.64% higher than case 5 and 1.87% also higher than case 6.

show abstract

Experimental and theoretical investigation of dual purpose solar collector

Cited by 32 publications

References 14 publications

Thermal performance investigation of modified flat plate solar collector with dual-function

Thermal performance investigation of modified flat plate solar collector with dual-function

CFD and comparative study on the dual-function solar collectors with and without tile-shaped covers in water heating mode

Comparative analysis of single‐ and dual‐purpose corrugated plate solar collector by force convection

Contact Info

Product

Resources

About