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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    Improvement of voltage profile in distribution system using compensating devices
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Pandey, Kamal; Singh, Sunil
    Optimal reactive power deployment in accordance with the statutory provisions of Indian Electricity Grid Codes is important for better performance of the system. Better voltage profile, lower losses, and improved efficiency are measures of distribution system quality. The aim is to keep the system operating smoothly with a better voltage profile at every node. A good distribution network is hence expected to improve overall efficiency of the system through loss minimization and power quality control. Due to the bidirectional nature of the present distribution system, DFACTS devices are gaining relevance almost everywhere for quick voltage management, power quality maintenance, and enhanced stability margins In this research work, a 33 bus distribution system of base 12.66 kV and 10 MVA is taken into consideration. After that, the improvement of voltage profile is discussed. By using load flow analysis, the values of unknown parameters are calculated. The impact of single and multiple D-STATCOM is investigated. The minimum voltage profile is improved to 0.9523 pu (5.18 % from base case) and 0.9780 pu (8.18 % from base case) from 0.9040 pu in single and multiple D-STATCOM cases respectively. The real and reactive power losses are reduced by 28.37 % and 27.55 % in single D-STATCOM case; while in the case of multiple D-STATCOM case, this reduction is 38.09 % and 37.02 % respectively. Overall, it is concluded that in this case, the D-STATCOM helps in improving the voltage profile by injecting a suitable amount of reactive power into the system.
  • ThesisItemOpen Access
    Application of machine learning algorithms in hostel mess attendance system using face recognition
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Pokhariya, Jyoti; Mishra, P.K.
    How to accurately and effectively identify people has always been an exciting topic in research and industry. With the rapid development of machine learning in recent years, facial recognition is gaining more and more attention. The face is the representation of one's identity. Hence, we have proposed an automated hostel mess attendance system based on face recognition for students. Face recognition is mainly used in biometric applications, surveillance systems, and computer vision. The major problem while recognizing faces arises due to pose variations, background illumination invariants and facial expressions. The proposed model utilizes two machine learning algorithms, HOG and SVM. HOG is used in preprocessing face images, and SVM is the classification algorithm used for image classification. The use of two separate machine learning algorithms improves the system recognition accuracy. In many of the hostel mess, managing the attendance of students/candidates is a tedious task, as there would be many students in the hostel mess and keeping track of all is onerous. Based on face detection and recognition algorithms, this system spontaneously detects the student when they enter the hostel mess and mark their attendance by recognizing them. The database is then modified or updated automatically. This reduces the time and effort of manually updating the attendance. The act of proxies will also be avoided using a face recognition attendance system. Face recognition system, compared to traditional card recognition, biometrics like fingerprint recognition and iris recognition, has many advantages. It is limited to non-contact, high concurrency, and user-friendly models, which are highly required after the covid-19 pandemic.
  • ThesisItemOpen Access
    Application of RSM in design improvement of honeycomb sandwich panel
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Nagendra Kumar; Misra, Anadi
    The geometry and dimensions of honeycomb structure affects the energy absorption characteristics of sandwich structure. It is essential to investigate the dimensional parameters of honeycomb structure on core under impact loading conditions. The combined and individual effect of each design parameter can be studied using response surface method (RSM).The objective of current research is to investigate the effect of various design variables on energy absorption characteristics of sandwich honeycomb structure. The CAD modelling and FEA simulation is conducted on honeycomb structure using ANSYS simulation package. The design of honeycomb sandwich structure is optimized using response surface method (RSM) to determine dimensions for maximum and minimum deformation and stresses. The honeycomb sandwich structure has shown good energy absorption characteristics. The internal energy of sandwich honeycomb structure changes abruptly as the bullet pierces through honeycomb structure. The force reaction by honeycomb structure in optimized design is found to increase by nearly 26.7%. The optimized design is able to further reduce kinetic energy of bullet during exit from sandwich structure by 23%.
  • ThesisItemOpen Access
    Modelling and analysis of hierarchical honeycomb structure using finite element method
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Shah, Amit Kumar; Misra, Anadi
    Honeycomb structures are strong and light composite structures with a high load bearing capability. A hierarchical honeycomb is a bio-inspired novel honeycomb shape that is employed for structural applications. The stiffness behaviour of hierarchical honeycombs is influenced by superstructure geometry. The deformation of a superstructure-based hierarchical honeycomb with varying cell lengths (4.36 mm, 5.32 mm, 6.28 mm, and 7.14 mm) was investigated in this research. For out of plane directed crushing, a numerical approach using the ANSYS static structure module was applied. The effects of various superstructure geometries were investigated. The boundary condition of a three point bend test configuration was performed on the structure. A deformation force of 200N, 400N, 600N, 800N, and 1000 N was applied at the midpoint of the honeycomb structure's span. The deformation caused in the member reduces as the superstructure cell length rises. The structure gets stiffer and exhibits less deformation as the core height increases. The honeycomb sandwich structure becomes stiffer as the thickness of the face sheet increases. Where weight is not an important structural criterion, a super-structure honeycomb sandwich structure may be the best solution.
  • ThesisItemOpen Access
    Numerical investigations on phase change materials in a horizontal shell and tube thermal energy storage system using different fin configuration
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-09) Mallik, Shubham; Mallik, Shubham; Mallik, Shubham; Bhandari, S.S.; Bhandari, S.S.; Bhandari, S.S.
    In order to improve the melting performance of phase change materials (PCM) in latent heat thermal energy storage unit (LHTES), the Angled rectangular with U-shaped tip fin design is proposed in this work. A two-dimensional numerical model based on enthalpy porosity method and Boussinesq approximation were used to model PCMs phase change transformation and the Buoyancy effect. The melting behavior of PCM is investigated by melt front evolution, temperature variation, effect of natural convection and variation of Stefan and Fourier number respectively. The results conclude that Angled rectangular U-shaped tip fin LHTES design is best suitable to enhances melting performance of PCM. The melting time decreases by 80.60 %, 74.42 % and 79.69 % as compared to Bare pipe for Angled rectangular with U-shped tip fin for PCMs Lauric acid, Paraffin wax and Capric acid respectively. The solidification time also decreases by a factor these PCMs. The melting time also decrease by a factor of 71.13 % due to rotation effect of whole domain for Angled rectangular with U-shaped tip fin latent heat thermal energy storage system.
  • ThesisItemOpen Access
    Investigation on the thermal performance of shell and tube thermal energy storage system using paraffin wax as phase change material
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-09) Tiwari, Mayank; Verma, Prashant
    Energy conversion is an essential aspect of technology advancement, and hence its efficient generation and use are important in today's scenario. In present scenario, there is a large gap between demand and supply, and it is difficult to meet the current energy requirement. Thermal energy storage devices enable us to attain energy demand while simultaneously minimizing pollution. The semi-circular outer shell geometry of the LHTES unit with and without fins on the inner tube using paraffin wax as phase change material has not been investigated yet. Hence it has been decided to investigate the melting performance of paraffin wax numerically and experimentally for circular shell, semi-circular shell without fins and semi-circular shell with finned tube latent heat thermal energy storage (LHTES) systems. Numerical analysis of two-dimensional model of different configurations of the LHTES system has been performed in Ansys fluid fluent to investigate the thermal performance of paraffin wax. Since natural convection plays important role in the melting process so the outer shell geometry is modified to semi-circular so that whole PCM is present in the upper portion and the heat transfer between the solid PCM and liquid PCM improves. In order to further improve the thermal performance fins are added to inner tube of the LHTES unit. Therefore, five different configurations including three different semi-circular with finned tube for different fin angles ( = 60º, 90º, 120º), semi-circular without fin, circular configuration have been investigated for the melting performance of the PCM. The results for a semi-circular shell with a fin angle of 90º for the LHTES system are found better as the thermal energy storage rate of finned tube LHTES system is 0.11 kW, which is 110% higher as compared to circular and 88% higher as compared to the semi-circular LHTES system. The semi-circular shell with finned tube LHTES melts the PCM completely in 66 minutes which is 54.98% less than the circular LHTES system and 32.65 % less in comparison to semi-circular without fin configuration. Thermal energy stored in the circular and semi-circular without fins arrangement of LHTES unit is 275.7 KJ and 290.37 KJ respectively. The thermal energy stored in the semi-circular LHTES unit with fins on the inner tube is 297 KJ which is 7.72% more as compared to the circular configuration and 2.3% more than the semi-circular without fins arrangement for same time period of 7200 sec. The thermal energy storage efficiency of semi-circular with finned tube LHTES unit has been found 6.72% higher than that of the circular LHTES system and 2% higher than the semi-circular without finned tube LHTES.
  • ThesisItemOpen Access
    Experimental and simulation studies on blanching and its impact on drying rate of carrot
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Joshi, Ashutosh; Pratihar, A.K.
    Fruits and vegetables are high in minerals, vitamins, antioxidants and fibers but low in fat and calories, which is beneficial to human health. Because fruits and vegetables are seasonal and do not hold for long, techniques such as drying, freezing and canning are used to extend their shelf life. Blanching is a heat treatment process performed before these processes to improve safety and quality. Carrots are one of the healthiest vegetables because they are high in carbohydrates, minerals like calcium, phosphorus, iron, sodium, zinc, magnesium and vitamin C. Blanching of carrot and its effect on drying rate of carrot has been investigated in this study by experimental and numerical methods. Besides this various thermo-physical properties required in simulation have been determined through experiments and using correlations. The simulation of the blanching process has been carried out using ANSYS Fluent software to determine the temperature distribution in carrot during blanching at optimum combination of temperature and time (95°C for 5 minutes). Carrots have been actually blanched at 4 different temperatures-time combinations; 80°C for 7 minutes, 85°C for 7 minutes, 90°C for 7 minutes and 95°C for 5 minutes. Under these blanching conditions, the effect of separating carrot cortex and core from the slice on their drying rate has also been studied. For various configurations, the Page model has been used to perform regression analysis and estimate the value of the drying constant (k). The hot air has been used for drying carrot samples, where a constant temperature of 70°C±0.1°C and a constant velocity of 0.5 m/s have been maintained. According to the present study, the drying rate of core has been found to be the highest for each blanching combinations followed by cortex and slice. Blanching also improves the drying constant and it can be seen that at optimum blanching conditions, the drying constant for slice, cortex and core is 22.84%, 24.90%, and 36.94%, respectively higher than for similar parts of the unblanched sample.
  • ThesisItemOpen Access
    Optimization of resistance spot welding process parameters for cold rolled mild steel lap joint based on tensile shear strength
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Pankaj Kumar; Bisht, Neeraj
    Owing to its numerous applications weld characteristics of cold rolled mild steel grade IS 513 CR 1 was investigated. Resistance spot welding, one of the most versatile welding technology was used for the purpose. The three most important parameters of the RSW namely welding current, welding time and electrode pressure were varied and the influence on the Tensile Shear Strength (TSS) was evaluated. The experiments were carried out according to Taguchi's L9 orthogonal array and Taguchi analysis was used in optimization. A lap joint of dimensions 120mm x 30 mm x 1.5mm was welded using a 100 kVA timer, current-controlled CSP-100PR Spot Welder, to create an overlap of 3 mm thickness. According to Taguchi’s L9 OA welding current cycles of 5, 10 and 15 were selected. During the welding process, the welding current was changed by adding 2 kA from 10 to 14 kA and the electrode pressure were taken to be 4, 5 and 6 bar. The Main effects plots revealed the optimal setting for the process parameters as welding current of 14 kA (Level 3), welding time of 15 cycles (Level 3), and electrode pressure of 4 bar (Level 1). The optimized process parameters showed the maximum TSS of the spot weld joint. ANOVA was carried out to identify the significant process parameters affecting the weld strength. Furthermore, the contribution of welding current was found to be 67.38% which had the maximum influence on the TSS of the welded joint. The contour plots showed that on increasing welding current and welding time with decreasing electrode pressure the Tensile Shear Strength of lap joint was increased by 55.78%, 26.27% and 33.65% respectively
  • ThesisItemOpen Access
    Design and implementation of drone spraying module using raspberry pi
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-10) Jyoti Ratna; Singh, Rajeev
    AI and IoT have made significant contributions to resolving people's issues in the present day technological world. The emergence of IoT and the broad implementation of cloud and internet technologies have made it possible to integrate traditional agricultural techniques with smart devices to automate some or all associated activities. Designing an agriculture drone spraying module to spray pesticides to minimize the adverse effects on people is the primary goal of this thesis. In this study, we describe a structure-based on drone. Pesticides must be used in agriculture to maintain the standard of large-scale production. By substituting intelligent machines like drones for human labourers using the most recent technologies; agriculture can be more productive and efficient. The use of pesticides in agriculture plays a significant part in raising the production of various crops per acre. The drones will carry pesticides to spray all around the farm, minimizing farmer’s effort and improving task completion. Spraying pesticides and fertilizer is a crucial step in agriculture for excellent crop production. The research's goal is to develop a drone spraying module that can do a variety of agricultural tasks including application of fertilizers and pesticides. The proposed procedure includes creating a prototype using basic and affordable technology like a Raspberry Pi and various motors and terminal equipment’s to assist farmers in various crop field operations. The obtained results suggest that a high spraying accuracy can be obtained using the proposed developed low cost system. Also, this system can be fitted on micro and small drones for spraying in the farms. The spraying module consists of following hardware parts i.e. water pump, two 5-way splitting nozzles, water pipes, battery and L298N motor driver and the total cost of designing the spraying module is approximately Rs.2000.