Thumbnail Image

Acharya N G Ranga Agricultural University, Guntur

The Andhra Pradesh Agricultural University (APAU) was established on 12th June 1964 at Hyderabad. The University was formally inaugurated on 20th March 1965 by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India. Another significant milestone was the inauguration of the building programme of the university by Late Smt. Indira Gandhi,the then Hon`ble Prime Minister of India on 23rd June 1966. The University was renamed as Acharya N. G. Ranga Agricultural University on 7th November 1996 in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga, who rendered remarkable selfless service for the cause of farmers and is regarded as an outstanding educationist, kisan leader and freedom fighter. HISTORICAL MILESTONE Acharya N. G. Ranga Agricultural University (ANGRAU) was established under the name of Andhra Pradesh Agricultural University (APAU) on the 12th of June 1964 through the APAU Act 1963. Later, it was renamed as Acharya N. G. Ranga Agricultural University on the 7th of November, 1996 in honour and memory of the noted Parliamentarian and Kisan Leader, Acharya N. G. Ranga. At the verge of completion of Golden Jubilee Year of the ANGRAU, it has given birth to a new State Agricultural University namely Prof. Jayashankar Telangana State Agricultural University with the bifurcation of the state of Andhra Pradesh as per the Andhra Pradesh Reorganization Act 2014. The ANGRAU at LAM, Guntur is serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication. Genesis of ANGRAU in service of the farmers 1926: The Royal Commission emphasized the need for a strong research base for agricultural development in the country... 1949: The Radhakrishnan Commission (1949) on University Education led to the establishment of Rural Universities for the overall development of agriculture and rural life in the country... 1955: First Joint Indo-American Team studied the status and future needs of agricultural education in the country... 1960: Second Joint Indo-American Team (1960) headed by Dr. M. S. Randhawa, the then Vice-President of Indian Council of Agricultural Research recommended specifically the establishment of Farm Universities and spelt out the basic objectives of these Universities as Institutional Autonomy, inclusion of Agriculture, Veterinary / Animal Husbandry and Home Science, Integration of Teaching, Research and Extension... 1963: The Andhra Pradesh Agricultural University (APAU) Act enacted... June 12th 1964: Andhra Pradesh Agricultural University (APAU) was established at Hyderabad with Shri. O. Pulla Reddi, I.C.S. (Retired) was the first founder Vice-Chancellor of the University... June 1964: Re-affilitation of Colleges of Agriculture and Veterinary Science, Hyderabad (estt. in 1961, affiliated to Osmania University), Agricultural College, Bapatla (estt. in 1945, affiliated to Andhra University), Sri Venkateswara Agricultural College, Tirupati and Andhra Veterinary College, Tirupati (estt. in 1961, affiliated to Sri Venkateswara University)... 20th March 1965: Formal inauguration of APAU by Late Shri. Lal Bahadur Shastri, the then Hon`ble Prime Minister of India... 1964-66: The report of the Second National Education Commission headed by Dr. D.S. Kothari, Chairman of the University Grants Commission stressed the need for establishing at least one Agricultural University in each Indian State... 23, June 1966: Inauguration of the Administrative building of the university by Late Smt. Indira Gandhi, the then Hon`ble Prime Minister of India... July, 1966: Transfer of 41 Agricultural Research Stations, functioning under the Department of Agriculture... May, 1967: Transfer of Four Research Stations of the Animal Husbandry Department... 7th November 1996: Renaming of University as Acharya N. G. Ranga Agricultural University in honour and memory of an outstanding parliamentarian Acharya Nayukulu Gogineni Ranga... 15th July 2005: Establishment of Sri Venkateswara Veterinary University (SVVU) bifurcating ANGRAU by Act 18 of 2005... 26th June 2007: Establishment of Andhra Pradesh Horticultural University (APHU) bifurcating ANGRAU by the Act 30 of 2007... 2nd June 2014 As per the Andhra Pradesh Reorganization Act 2014, ANGRAU is now... serving the students and the farmers of 13 districts of new State of Andhra Pradesh with renewed interest and dedication...

News

https://angrau.ac.in/ANGRU/Library_Resources.aspx

Browse

20171
Reset filters
Subject: Agricultural Engineering × Author: MADHAVA, M × End date: 2019 × Start date: 2016 × Thesis Type: M.Tech. ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    DESIGN AND DEVELOPMENT OF HYBRID SOLAR PHOTOVOLTAIC GREENHOUSE DRYER
    (Acharya N.G. Ranga Agricultural University, 2017) MADHAVA, M; SIVALA KUMAR
    India is the second largest producer of rice (Oryza sativa L.) in the world next to China with production of 104.8 MT during the year 2014-15. Andhra Pradesh is the third largest producer of rice in India, about 9 per cent of paddy is lost due to use of old and outdated methods of post harvest practices. Solar drying of agricultural products in enclosed structures by forced convection is an attractive way of reducing post-harvest losses. Study has been conducted to design and develop a hybrid solar photovoltaic greenhouse dryer for drying of paddy. A greenhouse dryer with 4467 mm length, 2134 mm width and 2591 mm height at the centre was designed and fabricated with 50.8×25.4 mm mild steel (MS) pipe, 19×30.2 mm MS angles. Transparent twin wall polycarbonate sheet of 6 mm thickness was used as a covering material. Forced ventilation was provided with 9-inch diameter exhaust fan which runs at 1200 rpm with rated power of 40 Watt. Two 150 W power capacity solar photovoltaic panels with 18.5 V rated voltage and 8.10 A rated current were used to drive the exhaust fans. 1 Study on assessment of ten years solar radiation data of Andhra Pradesh state revealed that, an average global solar insolation in the state was 5.21 kWh m-2. Average air temperature of 27.28 °C, 63.75% relative humidity and 3.4 ms-1 wind speed was observed. Performance evaluation was conducted under no load condition. It was observed that the average dryer air temperature was 7.6-13.4 °C and 6.3-13.2 °C (22- 43%) higher than the ambient temperature during Rabi and Kharif seasons, respectively. Ambient air temperature varied between 29-38 °C and 25-36 °C during Rabi and Kharif seasons, respectively. Average relative humidity of the green house dryer was 26-47% and 23-40% less as compared to ambient relative humidity during Rabi and Kharif seasons, respectively, where as ambient relative humidity varied between 34-64% and 44-68% during Rabi and Kharif seasons, respectively. Forced ventilation was achieved by DC exhaust fans, which was powered with photovoltaic panels. Exhaust air flow rate varied in the range of 38.93-81.95 m3 min-1, and 28-63 m3 min-1 during Rabi and Kharif seasons respectively. Performance evaluation of solar greenhouse dryer under full load condition for kharif and Rabi paddy was conducted with three different bed thicknesses (5, 10 and 15 cm). Kharif paddy was dried from 26.5% to 12.15%, 25.3% to 10.87% and 26.15% to 11.13% moisture content (w.b.) within 25, 25 and 16 h of drying for 15, 10 and 5 cm bed thickness, respectively. Highest drying rate observed during the first day of drying was 2.02 %(d.b) h-1 for 5 cm, whereas 1.62 and 1.27%(d.b) h-1 drying rates were observed for 10 cm and 15 cm, respectively. Rabi paddy was dried from 22.3% to 12.57%, 22.8% to 11.57% and 22.4% to 10% (w.b) in 21, 21 and 17 h of drying for 15, 10 and 5 cm, respectively. Highest drying rate observed during the first day of drying was 2.0, 1.29 and 1.27%(d.b) h-1 for 5, 10 and 15 cm, respectively. Milling quality analysis showed that there was no significant effect of season, replication and interaction of season and depth on brown rice yield (BRY), milling recovery (MR) and head rice yield (HRY), however, grain bed thickness had significant effect at 5% significant level. Highest HRY of 66.4% achieved was for 10 cm bed thickness, as compared to 62.9% and 65.4% for 5 and 15 cm beds thick, respectively. Broken rice obtained was 3.66% during Kharif season which was significantly lower than that the broken rice (5.11%) obtained during Rabi season. Head rice yield in the greenhouse dryer was much higher than mechanical drying (63.5%) and open sun drying (62.91%). Highest germination percentage (90%) was achieved during Kharif 2 paddy drying and there was no significant difference in germination among greenhouse and open sun drying at 5% significant level. Drying data were fitted to the eleven thin layer drying models. Among them, logarithmic model was found to be the most suitable model for describing the drying characteristics of thin layer drying of Rabi paddy. Logarithmic model gave R2 = 0.9891, χ 2 = 0.00689, RMSE = 0.024477 and MBE = 4.02×10-8. Midilli model was found to be the best to describe the drying behaviour of thin layer drying of Kharif paddy. Midilli model gave R2 = 0.9953, χ2 = 0.0000408, RMSE = 0.019042 and MBE = -1.3×10-5 . Payback period of the solar greenhouse dryer was 1.84 years and gave 49.34% rate of return. Cost of drying was `0.2 per kg of paddy. Cost-benefit ratio was 4.13. Keywords: PV potential, forced ventilation, greenhouse drying, open sun drying, paddy drying, economic evaluation, mathematical modelling