Modeling and analytical experimental study of hybrid solar. Key words renewable energy, hybrid power systems, decentralized power supply, optimal structure, decision making. It is possible to download the reports from the internet. Design and experimental study of solar agricultural dryer. This paper presents the solarwind hybrid power system that harnesses the renewable energies in sun and wind to generate electricity. A hybrid solar dryer was designed and constructed using direct solar energy and a heat exchanger. Modeling and analytical experimental study of hybrid solar dryer integrated with biomass dryer for drying coleus forskohlii stems k. It ensures the optimum utilization of resources and hence improve the efficiency as. Pdf control system in a hybrid solar dryer researchgate.
Evaluation and design of a solarbiomass hybrid dryer. A portable solar dryer working in indirect heating mode was built and later also modified to enhance its performance. The food is dried using solar thermal energy in a cleaner and healthier way. Ieee projects 2018 papers 2019 papers 2017 papers 2016 papers 2015 papers 2014papers 20 papers ieee projects. Experiments were conducted to test performance of hybrid solar dryers by drying chili. The hybrid system was designed to overcome the problem of climate change, to ensure a reliable supply without interruption, and to improve the overall system efficiency by the integration of the battery bank. Starting from a small base, solar panel use has grown to a total global capacity of 40 gw 40,000 mw at the end of 2010. The drying chamber was located directly under the solar collector. Rakhonde department of electrical engineering, dess coet, dhamangaon rly department of electrical engineering, dess coet, dhamangaon rly abstract now a days electricity is most needed facility for the human being. Hybrid power generation system using wind energy and solar.
Solar drying is having varied levels of technological sophistication as compared to conventional drying. Two generic groups of solarenergy dryers can be identi. Indirect convective solar drying process of pineapples as part of. The thermal and drying efficiency of three operating configurations for a hybrid solar gas dryer were calculated in transitory state. In fact, the spread of the larger grain borer in the region makes the use of good storage essential. The net present worth of solar hybrid dryer and solar cabinet dryer after 10 years was found to be rs. Performance of hybrid solarbiomass dryer nepal journals online. In most of the cases hybrid solar drying systems are medium to large capacity installations and operate by a solar ratio in the range of 5060%. This shortcoming can be overcome to some extent by storing solar energy. However, maize for marketing is now mainly hybrid maize which, because of its shorter and looser husks, should ideally be stored shelled in a closed store with the use of pesticide. Existing mathematical models were used to calculate electrical energy production figures for wind and solarenergy.
The intermittent nature of the solar energy which is the main source of energy in solar drying is indeed one of the. A hybrid type passive solarenergy dryer would have the same typical structural features as the indirecttype and directtype i. The dryer was operated during normal sunny days as a solar dryer, and during cloudy day as a hybrid solar dryer. A hybrid dryer fuelled by the combination of solar energy and energy from. Solar dryer is a device which removes water content from food. Solar biomass hybrid drying advantages compared to solar energy systems.
Title of thesis windsolar hybrid streetlights date 26. This type of dryer does not require any other energy during operation. Fabrication of hybrid solar dryer jyoti singh, pankaj verma m. Concentrating solar panels csp improve the process of solar drying roma tomatoes. A windsolar hybrid power generator system consisting of photovoltaic pv modules controlled by maximum power point tracking mppt method and connected to a dcdc boost converter, a gridconnected wind turbine coupled with a permanent magnet synchronous generator pmsg. Numerical comparisons energy intensity diagnostics contributed to solar dryers energy challenges free download. The case study for the algorithm is the hybrid power supply system in laboratory of university in tomsk town, which configuration will be compared to the one proposed in the thesis. In todays world of advanced technology, hybrid solar dryers are the best alternative device available for fast solar drying of products with required product quality. Abstract the presents work is based on the working of dryers, the basic aim of this experiment is to solardesign a dryer which meets. The benefitcost ratio of the solar hybrid dryer was found to be 1. Phd thesis, wageningen university, wageningen, the netherlands 2019. The sunlight required for the operation of solar tray dryer will not be available over the entire batch. Hybrid photovoltaicthermosyphon water heating system for residential. Continuous yearround operation 6080% reduction in drying time improves the financial viability examples of real life applications solarbiomass hybrid cabinet dryer, thailand, commerc ial.
With drying most agricultural produce can be preserved and this can be achieved more efficiently through the use of solar dryers. A circuitwas below world standards unlike the results of solarenergy assessment. Abstract the presents work is based on the working of dryers, the basic aim of this experiment is to solardesign a dryer which meets the basic requirements of dryer which are improved by a. P a g e 22 however, a pv based solar dryer is a selfsustained solar dryer.
Proposed solar tray dryer system is used as a hybrid system. Drying is the oldest preservation technique of agricultural products, and sun drying is still widely used for preservation of agricultural products in the tropics and subtropics. This paper presents a performance comparison between two mixedmode solar dryers. The average collector efficiency in these dryers is observed to be 62.
Solar drying in ghana final report 1 st printing, 1 edition danish technological institute energy division isbn. Solar drying can be used for the entire drying process or for supplementing artificial drying systems, thus reducing the total amount of fuel energy required. While in forced convection solar dryers the air flow is provided by using a fan. A solar dryer is an enclosed unit, to keep the food safe from damage, birds, insects and unexpected rainfall. Design of a reliable hybrid pvdiesel power system with. Modeling and analysis of a photovoltaic system with a. For hybrid sdss, which uses additional energy from a second source e.
This paper reports the experience acquired with a photovoltaic pv hybrid system simulated as an alternative to diesel system for a residential home located in southern nigeria. Solar, dryers, efficiencies, performance, design, technology transfer, nontechnical factors, prospects, developments. Numerous types of solar dryers have been designed and developed in various parts of the world, yielding varying degrees of technical performance. The difference is based on the airflow within a dryer. Biomass supported solar thermal hybrid power plant for free download.
From the results of this study, we can see the different efficiency of solar collector that shows of 54. Drying of agricultural food products is one of the most attractive and costeffective applications of solar energy. Modeling of a solar dryer for fruit preservation in developing countries. Experimental verification of yam drying with solar adsorption drying. Pdf energy analysis of a hybrid solar dryer for drying. Hybrid solar dryers combine solar radiation energy with an auxiliary conventional source of energy. The 72 internal rate return was found to be 102% and 74% respectively. The solar dryer can be seen as one of the solutions to the worlds food and energy crises. The thesis titled design strategy for an offgrid solarwind hybrid power system submitted by ahammad, student no 04090625 p of session april 2009 has been accepted as satisfactory in partial fulfillment of the requirement for the degree of master of science in electrical and electronic engineering on december 29, 2014.
The hybrid dryer, comprising a solar collector, auxiliary lpg. Performance evaluation of an enhanced fruit solar dryer. The design, construction, and use of an indirect, through. The annual maintenance cost of the solar dryer, biomass dryer and hybrid solar dryer are taken. Recent developments of solar dryers such as solar tunnel dryer, improved version of. They can be operated either only by solar energy, only by conventional energy sources or by both. The solar dryer is less reliable due to the intermittent nature of solar energy. Hybrid solar dryers in these dryers, although the sun is used to dry products, other technologies are also used to cause air movement in the dryers. The active solar dryer, auxiliary energy is necessary to operate the system.
Ait thesis no et9936, asian institute of technology, bangkok. For example fans powered by solar pv can be used in these types of dryers. In order to ensure continuous moisture removal until dryness is achieved in solar dryers, integration of heat storage systems or auxiliary heating. Performance evaluation of photovoltaic ventilated hybrid. Economic analysis of hybrid photovoltaicthermal pvt integrated solar dryer. Economic analysis of hybrid photovoltaicthermal pvt. Passive dryers rely solely on the convective currents created by heat to move the air through them figure 1. However, in the mixed mode solar dryer, it consists of both radiation with. The solar dryer described in this paper can be used for drying various products in rural area under hygienic. The dryers were identically constructed, however one of the dryers utilized mobile and easily adjustable. At start, process will work on solar tray dryers assuming 7 10 hours of average sunlight in a day, and in the. Three subgroups of these, which differ mainly on their structural arrangement, can also be identified, via integral or direct mode solar dryers, distributed or indirectmodes.
It was observed that the efficiency of the solar dryer varied from 6. Hybrid power generation system using wind energy and solar energy ashish s. Design and evaluation of combined solar and biomass dryer for. The useful life of the solar dryer, biomass dryer and hybrid dryer are taken as 20, 10 and 15 years respectively. Detailed project report f on hybrid solar tray dryer 96. Ntis 1982 suggests to 12 cubic meters per minute 11. Construction and performance testing of a mixed mode solar. Solar drying, based only on solar radiation is also subject to low quality products because such products would absorb moisture at night or during high humidity days due to dryness differential. Solar dryer can be classified by three types that is direct, indirect and mixed mode which it is according to the mode of drying, whether the product to be passive dried is exposed or not. Deepika and sanjay energy and exergy based analysis of hybrid solar dryer fig. Hybrid dryers combine solar energy with a conventional or some auxiliary source of energy as electricity, biomass or other fuel 6 to overcome the drawbacks of solar and artificial dryers. Solar dryers circumvent some of the major disadvantages of classical drying.
Energy and exergy based analysis of hybrid solar dryer. Categories of dryers solar dryers can be separated into two basic categories. Design and performance evaluation of a new hybrid solar. Progress in hybrid solar dryers for drying various.
Efficiency, hybrid solarbiomass dryer, heat transfer, moisture content. In natural convection solar dryers, the air flow is due to buoyancyinduced air pressure, and the drying process needs some days to complete, as a cabinet dryer needs 34 days to dry grapes. Previous efforts on solar drying of cereal grains, fruits, vegetables, spices, medicinal plants, and fish are critically examined. Comparative evaluation of the performance of an improved. In hybrid solar dryers with energy accumulation system, a control system is essential to coordinate the control valves.