Thermal Analysis of the Solar Collector Cum Storage System Using a Hybrid-Nanofluids

2021 ◽  
Vol 10 (4) ◽  
pp. 616-626
Author(s):  
Kawthar Dhif ◽  
F. Mebarek-Oudina ◽  
S. Chouf ◽  
H. Vaidya ◽  
Ali J. Chamkha
Keyword(s):  
Thermal Analysis ◽  
Steady State ◽  
Solar Collector ◽  
Heat Storage ◽  
Storage System ◽  
Stored Energy ◽  
Salt Mixture ◽  
Energy Field ◽  
Hybrid Nanofluids ◽  
Flat Plate Collector

The main problem in the solar energy field is the storage of thermal energy. To divert this problem, it was suggested to use a flat-plat solar collector which also serves as a storage system; this solution will reduce the size of a refrigerating machine that we are studying. A high stored energy density is only possible if we through use latent heat of phase change. Thermal analysis has been developed for this type of storage collector for near-steady state conditions using a nanofluid heat storage substance depended on KNO3–NaNO3 binary salt mixture as PCM and a mix of Al2O3–SiO2 as nanoparticle, from which the new Hottel-Whillier-Bliss equations have been used for efficient flat plate collector. Computations were achieved for a large variety of parameters to verify the significance of the created model.

Experimental Investigation on a Latent Heat Thermal Storage Unit for Solar Cooling Application

Green ◽  
2011 ◽  
Vol 1 (2) ◽  
Author(s):  
L. Chidambaram ◽  
A. S. Ramana ◽  
G. Kamaraj ◽  
R. Velraj
Keyword(s):  
Solar Energy ◽  
Latent Heat ◽  
Solar Collector ◽  
Heat Storage ◽  
Storage System ◽  
Thermal Storage ◽  
Environmental Crisis ◽  
Storage Unit ◽  
Latent Heat Storage ◽  
Solar Cooling

AbstractConventional cooling technologies that utilize harmful refrigerants consume more energy and cause peak loads leading to negative environmental impacts. As the world grapples with the energy and environmental crisis, there is an urgent need to develop and promote environmentally benign sustainable cooling technologies. Solar cooling is one such promising technology, given the fact that solar energy is the cheapest and most widely available renewable energy that matches the cooling load requirements. However thermal storage systems are essential to overcome the disadvantage of the intermittent nature of solar energy and variations in the cooling demand. The enhanced utilization of solar energy and other consequences of thermal storage integrated systems have gained the attention of researchers in recent years. The concept of combined sensible and latent heat storage system is successfully introduced in several applications and it has many advantages. This paper presents the performance of the solar collector system and the charging characteristics of a PCM based latent heat thermal storage unit, which is designed to provide continuous supply of heat for the operation of 1 kW vapor absorption refrigeration unit. Investigations on PCM integrated thermal storage system have revealed improvement in heat storage capacity, lower heat loss and an increased solar collector efficiency due to better thermal stratification.

Study on Thermal Performance of Solid Heat Storage System combined with Air Heating Type of Solar Collector

2000 ◽  
Vol 2000.10 (0) ◽  
pp. 355-358
Author(s):  
Hidenori KUME ◽  
Koki KISHINAMI ◽  
Jun SUZUKI ◽  
Norihiko KAMATA ◽  
Daiju KAWAHARA ◽  
...  
Keyword(s):  
Thermal Performance ◽  
Solar Collector ◽  
Heat Storage ◽  
Storage System ◽  
Air Heating

Study on Thermal Performance of Solid Heat Storage System combined with Air Heating Type of Solar Collector

2000 ◽  
Vol 2000 (0) ◽  
pp. 148
Author(s):  
Hidenori KUME ◽  
Koki KISHINAMI ◽  
Jun SUZUKI ◽  
Norihiko KAMATA ◽  
Daiju KAWAHARA ◽  
...  
Keyword(s):  
Thermal Performance ◽  
Solar Collector ◽  
Heat Storage ◽  
Storage System ◽  
Air Heating

Transient Performance of Evacuated Tubular Solar Collectors

1982 ◽  
Vol 104 (4) ◽  
pp. 326-332 ◽  
Author(s):  
M. J. Behrendorff ◽  
R. I. Tanner
Keyword(s):  
Heat Transfer ◽  
Steady State ◽  
Theoretical Model ◽  
Solar Collector ◽  
Transient Performance ◽  
Flow Conditions ◽  
Heat Transfer Fluids ◽  
Finite Difference Technique ◽  
Flat Plate Collector ◽  
Laminar Flow Conditions

A computer program using a finite difference technique is developed to study the steady-state and transient performance of an evacuated solar collector suitable for applications in the 120–250°C temperature region. The collector is modeled as an equivalent flat plate collector, with water, oil, and air being the heat transfer fluids studied in detail. Nonflow and laminar flow conditions are considered for the three fluids, together with turbulent flow for air. Step and sinusoidal solar inputs are modeled. Experimental transient tests on a module of evacuated collectors were made and were used to show that the accuracy of the theoretical model developed is adequate for design purposes.

Design and Application of a Seasonal Solar Soil Heat Storage System Applied in Greenhouse Heating

2014 ◽  
Vol 672-674 ◽  
pp. 21-25
Author(s):  
Liang Zhang ◽  
Peng Xu ◽  
Jia Chen Mao ◽  
Xu Tang
Keyword(s):  
Solar Energy ◽  
Energy Saving ◽  
Air Temperature ◽  
Indoor Air ◽  
Solar Collector ◽  
Heat Storage ◽  
Storage System ◽  
Control Subsystem ◽  
And Control ◽  
Design And Application

A seasonal solar soil heat storage (SSSHS) system applied in greenhouse heating has been designed and introduced. The system consists of solar collector subsystem, soil heat storage subsystem, greenhouse heating subsystem, hydronic subsystem and control subsystem. By applying soil heat storage, solar energy stored in the soil under the greenhouse can be transferred and utilized in winter to realize the utilization of cross-seasonal energy. TRNSYS is used to simulate the process and effect in the system of the solar energy collection and soil heat storage in Shanghai, and the simulation is calibrated to improve the precision of the TRNSYS model. When the indoor air temperature of the greenhouse is kept at 12°C throughout the year, the energy saving by using the SSSHS system in Shanghai can be 46.2kWh/(m2∙year).

scholarly journals Numerical study of an Evacuated Tube Solar Collector incorporating a Nano-PCM as a latent heat storage system

2021 ◽  
Vol 24 ◽  
pp. 100859
Author(s):  
Raja Elarem ◽  
Talal Alqahtani ◽  
Sofiene Mellouli ◽  
Walid Aich ◽  
Nidhal Ben Khedher ◽  
...  
Keyword(s):  
Latent Heat ◽  
Solar Collector ◽  
Heat Storage ◽  
Numerical Study ◽  
Storage System ◽  
Latent Heat Storage ◽  
Evacuated Tube Solar Collector ◽  
Evacuated Tube
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