scholarly journals Compatibility of Concentrating and Non Concentrating Solar Collectors with Cooking Applications for Different Cooking Needs

2019 ◽  
Vol 8 (6) ◽  
pp. 5115-5119
Keyword(s):  
Solar Energy ◽  
Research Work ◽  
Fresnel Lens ◽  
Solar Collectors ◽  
Evacuated Tube Collector ◽  
Significant Research ◽  
Parabolic Dish ◽  
The One ◽  
Flat Plate Collector ◽  
Evacuated Tube

Amid numerous sources of energy, solar energy possesses calibre to combat energy requisite for various sectors. A lot of significant research work has been carried out on solar energy to maximize its applications and efficiency of available designs. Among many applications, cooking is the one of the dominant application of solar energy. Other than basic design of box type solar cooker, solar collectors are employed in solar cooking system for the feasibility of more effective cooking. This manuscript inhibits various cooking system based on solar collectors like FPC(flat plate collector),ETC (evacuated tube collector),PDC(parabolic dish collector), PTC(parabolic trough collector), fresnel lens based collector and scheffler reflector type collector. Solar collectors based cooker designs render compatibility of cooking regarding cooking load, cost, cooking type, ease of operation and cooking time

Experimental Daily Energy Performance of Flat Plate and Evacuated Tube Solar Collectors

2009 ◽  
Author(s):  
Enrico Zambolin ◽  
Davide Del Col ◽  
Andrea Padovan
Keyword(s):  
Solar Energy ◽  
Flat Plate ◽  
Energy Performance ◽  
Hot Water ◽  
Solar Collectors ◽  
Input Output ◽  
Evacuated Tube Collector ◽  
Daily Energy ◽  
Radiation Test ◽  
Evacuated Tube

New comparative tests on different types of solar collectors are presented in this paper. Tests have been performed at the solar energy conversion laboratory of the University of Padova. Two standard glazed flat plate collectors and one evacuated tube collector are installed in parallel; the evacuated collector is a direct flow through type with external CPC (compound parabolic concentrator) reflectors. The present test rig allows to make measurements on the flat plate, on the evacuated collector or on both simultaneously, by simply acting on the valves to modify the circuit. In this paper measurements of the performance of the evacuated tube collector and flat plate collectors working at the same conditions are reported. Efficiency in stationary conditions is measured following the standard EN 12975-2 [1] and it is compared with the input/output curves measured for an entire day. The main purpose of the present work is to characterize and to compare the daily energy performance of the two types of collectors. An effective mean for describing and analyzing the daily performance is the so called input/output diagram, in which the collected solar energy is plotted against the daily incident solar radiation. Test runs have been performed in several conditions to reproduce different conventional uses (hot water, space heating, solar cooling).

scholarly journals Development of Powerhouse Using Fresnel lens

2018 ◽  
Vol 144 ◽  
pp. 04006
Author(s):  
Nawar Saif Al-Dohani ◽  
S. Nayak Nagaraj ◽  
A. Anarghya ◽  
V. N. Abhishek
Keyword(s):  
Heat Exchanger ◽  
Solar Energy ◽  
Research Work ◽  
Fresnel Lens ◽  
Industrial Applications ◽  
Maximum Energy ◽  
Solar Collectors ◽  
Alternative Source ◽  
Lower Heat ◽  
Lens Power

Solar energy is an alternative source of renewable energy. Sultanate of Oman government showed initiation on utilization of solar energy for domestic and industrial applications. Fresnel lens is one of the methods to collect maximum energy by gathering heat of the sun in the concentrated form (using solar collectors). Earlier research work discloses that Fresnel lens gave better result in terms of power output and produces lower heat loss as compared to linear –parabolic solar collectors. In this work, development of a proto Fresnel lens power house was made to generate electricity. The focused heat from Fresnel lens was used to heat the molten salt in a heat exchanger to produce the steam. The generated steam was used to rotate the steam engine coupled to a generator. In the current work, a maximum power of 30 W was produced. In addition, comparative study was carried out regarding solar salts and heat exchanger materials to understand the Fresnel powerhouse performance. Overall the present study gave valuable information regarding usage of Fresnel lens for electricity generation in Oman.

Evacuated Tube Heat Pipe Solar Collectors Applied to Recirculation Loop in a Federal Building: SSA Philadelphia

Solar Energy ◽  
2004 ◽  
Author(s):  
Andy Walker ◽  
Fariborz Mahjouri ◽  
Robert Stiteler
Keyword(s):  
Solar Energy ◽  
Heat Pipe ◽  
Heat Loss ◽  
Heating System ◽  
Hot Water ◽  
Solar Array ◽  
Solar Collectors ◽  
Water Heating ◽  
Evacuated Tube ◽  
Recirculation Loop

This paper describes design, simulation, construction and measured initial performance of a solar water heating system (360 Evacuated Heat-Pipe Collector tubes, 54 m2 gross area, 36 m2 net absorber area) installed at the top of the hot water recirculation loop in the Social Security Mid-Atlantic Center in Philadelphia. Water returning to the hot water storage tank is heated by the solar array when solar energy is available. This new approach, as opposed to the more conventional approach of preheating incoming water, is made possible by the thermal diode effect of heat pipes and low heat loss from evacuated tube solar collectors. The simplicity of this approach and its low installation costs makes the deployment of solar energy in existing commercial buildings more attractive, especially where the roof is far removed from the water heating system, which is often in the basement. Initial observed performance of the system is reported. Hourly simulation estimates annual energy delivery of 111 GJ/year of solar heat and that the annual efficiency (based on the 54 m2 gross area) of the solar collectors is 41%, and that of the entire system including parasitic pump power, heat loss due to freeze protection, and heat loss from connecting piping is 34%. Annual average collector efficiency based on a net aperture area of 36 m2 is 61.5% according to the hourly simulation.

Real Time Experimental Performance Assessment of a Photovoltaic Thermal System Cascaded with Flat Plate and Heat Pipe Evacuated Tube Collector

2021 ◽  
pp. 1-28
Author(s):  
Laveet Kumar ◽  
Md Hasanuzzaman ◽  
Nasrudin Abd Rahim
Keyword(s):  
Performance Assessment ◽  
Flat Plate ◽  
Heat Pipe ◽  
Large Scale ◽  
Industrial Process ◽  
Simulation Models ◽  
Solar Thermal ◽  
Evacuated Tube Collector ◽  
Flat Plate Collector ◽  
Evacuated Tube

Abstract In response to the global quest for a sustainable and environmentally friendly source of energy most scientists' discretion is solar energy, especially solar thermal. However, successful deployment of solar thermal technologies such as solar assisted process heating (SAPH) systems in medium- to large-scale industries is still in quandary due to their inefficacy in raising ample temperatures. Cascaded SAPH system, which is essentially a series combination of two same or different types of thermal collectors, may provide a worthwhile solution to this problem. In this article, performance assessment and comparison of two cascaded SAPH systems have been presented: photovoltaic thermal (PVT) cascaded with flat-plate collector (PVT-FPC) and PVT coupled with heat-pipe evacuated tube collector (PVT-HPETC). Simulation models have been presented for individual FPC, HPETC and PVT as well as PVT cascaded with FPC and HPETC systems in TRNSYS and validated through outdoor experimentation. Both the first and the second laws of thermodynamics have been employed to reveal veritable performance of the systems. Results show that PVT-HPETC delivers better performance with 1625 W thermal energy, 81% energy efficiency and 13.22% exergy efficiency. It cuts 1.37 kg of CO2 on an hourly basis. Cascaded systems can be effective in sustaining industrial process heat requirements.

scholarly journals PERBANDINGAN PERFORMANSI KOLEKTOR SURYA TIPE EVACUATED TUBE MENGGUNAKAN FLUIDA KERJA ETANOL DENGAN TIPE PELAT DATAR

2020 ◽  
Vol 4 (1) ◽  
pp. 275-279
Author(s):  
Rusmana ◽  
Kurnia Chandra
Keyword(s):  
Flat Plate ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water ◽  
Evacuated Tube Collector ◽  
Flat Plate Collector ◽  
Evacuated Tube

Mengingat wilayah Indonesia yang letaknya berada di garis khatulistiwa, sumber energi surya yang diterima Indonesia sangat melimpah. Pemanfaatan yang paling sederhana adalah menjadikan energi surya sebagai sumber panas pada proses pemanasan air. Teknologi kolektor surya merupakan salah satu sarana untuk mengambil panas matahari. Aneka jenis kolektor surya memiliki kinerja yang bervariasi. Kemampuan penyerapan panas yang tinggi dapat diperoleh dari kolektor surya berjenis evacuated tube collector yang mempunyai waktu pemanasan air awal lebih cepat dibandingkan dengan jenis flat plate collector. Penelitian ini bertujuan untuk mengetahui perbandingan efisiensi kolektor surya tabung vakum terhadap solar water heater sederhana. Metode pengujian dilakukan dengan cara memasukan debit air yang sama pada setiap pengujian. Hasil pengujian menunjukkan bahwa solar water heater tabung vakum dengan fluida kerja etanol memberikan efisiensi tertinggi sebesar 44.5% dan efisiensi terendah sebesar 26.4%. Temperatur air output tertinggi mencapai 35,4°C.

The Possibility of Using the Ground as a Seasonal Heat Storage: The Numerical Study

2004 ◽  
Author(s):  
Pawel Olszewski
Keyword(s):  
Solar Energy ◽  
Heat Storage ◽  
Numerical Study ◽  
Storage System ◽  
Heating System ◽  
Numerical Code ◽  
Space Heating ◽  
Solar Collectors ◽  
Seasonal Heat ◽  
The One

Humankind can effectively utilize only part of the solar energy reaching a surface of the Earth. It is due to the low density of the solar radiation and its unfavorable distribution. The majority of solar energy falls to the low latitude countries, where space-heating requirements are marginal. In these countries the solar heat is used for preparing water for washing or cleaning purposes, and this process works in one, or — maximum — a few daily cycles. In countries located at higher latitudes, where space heating is necessary in cold months, the current solar energy is insufficient to meet the space heating demand. The heat storage in deep layer of the ground is the one of possible way for solution of this problem. During the heating season, energy storage is discharged supplying the heat pomp cooperating with domestic heating system and during the summer months the storage can be charged by fluid heated in solar collectors. The main aim of presented research was analysis of using the ground layer as a heat storage system in the countries located in higher latitudes. The first variable taken into consideration was the output temperature of water leaving the solar collectors. The temperature distribution in the ground depends on the inlet water temperature, primary heated in the solar collectors, and forced into vertical boreholes. The temperature field in the ground was calculated using the duFort-Frankel finite-difference numerical method. A numerical code for 3D time dependent storage simulation has been created. The next step of analysis was calculation of waters’ temperature at the borehole output during cold months when the ground storage is discharged. This water works as a low-temperature reservoir of the heat pomp supplying the dwelling heating system. The solution of the problem is focused on an optimization of all parameters for the most efficient utilization of energy stored in the ground. The numerical genetic algorithms are scheduled to use to achieve this target.

Design and Analysis of Solar Tracking System for Multipurpose Domestic Applications

2013 ◽  
Author(s):  
P. Rhushi Prasad ◽  
P. B. Gangavati ◽  
H. V. Byregowda ◽  
K. S. Badarinarayan
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Flat Plate ◽  
Tracking System ◽  
Solar Collectors ◽  
Tracking Systems ◽  
Pv Panel ◽  
Energy Conversion Systems ◽  
Flat Plate Collector ◽  
Parabolic Collector

Now-a-days the field of applied mechanical systems opens new horizons for the use of orientation mechanisms. The opportunity to use mechanisms with a “sustainable purpose” leads to new approaches in the development of renewable energy systems design. The evaluation of the existing products shows that the tracking mechanisms for solar energy conversion systems may improve the efficiency of the solar energy conversion systems up to 30% to 50%. Applications of solar energy for domestic and industrial heating purposes have been becoming very popular. However the effectiveness of presently used fixed flat plate collectors, PV panels and parabolic collector are low due to the moving nature of the energy source. The presents research was carried out in the field of increasing the efficiency of the solar energy received by the solar collectors like PV panels, Flat plate collectors, Cylindrical Parabolic collectors using tracking systems by changing the position of the solar collectors correlated to the sun position for getting maximum radiation use of beam radiation falling on the solar collector. Two main aspects are taken into consideration, one optimizing the interaction between the mechatronic system components by integrating the analog electronic system by using a 555 timer in the mechanical model, and secondly by reducing the cost & time for the design process. The research work was carried out for location in chickballapur district at BGS R&D centre in Karnataka State, India. The results obtained in work is 24% increase in tracking efficiency of experimental model of flat plate collector, 30% increase in tracking efficiency in working model flat plate collector, 39 % increase in tracking efficiency of cylindrical parabolic collector and 36% increases in tracking efficiency of the Photovoltaic panel is found when compared to the non-tracking systems respectively. This paper presents the results of PV panel collector in detail for increasing the efficiency of the PV panel collector by tracking system with comparison of non-tracking system.

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