Technical and Economic Feasibility of Solar Pump Irrigations for Eco-friendly Environment (original) (raw)
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Irrigation pumps operated by diesel and electricity are commonly used for irrigated rice cultivation, but fuel cost expansion and doubtful accessibility of power hampers the continuous irrigation. A solar pump would be an alternative option for irrigation to contribute in expanding rice production and food security to the growing population. Field experiments were conducted at Bangladesh Rice Research Institute, Gazipur, farm during Boro season from January May in 2015, 2016 and 2017, respectively to determine the economic feasibility of a low cost 1.5 Horsepower (hp ) capacity solar irrigation pump for rice cultivation. BRRI dhan63 was tested under four irrigation treatments as flood irrigation (continuous standing water at 7 cm depth above the soil surface), 3 cm irrigation at saturation level, 3 cm irrigation in AWD (alternate wetting and drying) practice, and 5 cm irrigation in AWD practice. The CROPWAT 8.0 model was used to ascertain crop water requirement (CWR) and irrigation ...
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In the summer season, irrigation sector in Bangladesh suffers a lot due to the country wide electricity crisis. Solar pump offers a clean and simple alternative to the conventional fuel fired engine or grid electricity driven pump in this regard to resolve the issue. In this paper, the techno-economic analyses of solar irrigation plants installed in Bangladesh are evaluated. It was observed that systems were running around 70% to 80% of the rated power which was quite acceptable. A 10 hp pump was able to pump 600 liter of water per minute which was also satisfactory to irrigate the land. Average operating time was found to be 8 hour/day. It was found that the overall efficiency of the systems were in between 11.39% to 16.52% whereas the typical average value of lit/Wp/year was 9200. On the other hand, the cost of irrigation to cultivate paddy in 0.161 hectares’ land for one season was 1,750 BDT by solar irrigation which was found to be lower than that of other available modes. This...
2014
This article investigates the feasibility of solar powered irrigation process in Bangladesh where photovoltaic technology could be used to gather solar energy for running a submersible pump and supply water for crop cultivation. It also depicts a comparative picture of irrigation costs for 27 Bangladeshi crops for diesel and photovoltaic irrigation systems. The researchers have collected data concerning required water height during farming of those crops and then have calculated water volume for 1 ha of land. Subsequently, two commonly used pumps (solar, diesel) with same power ratings (5 hp) have been chosen. Specific areas covered by these pumps for different crops are calculated furthermore from the attained water volumes. Finally, total irrigation costs (at present condition) of these types of irrigation choices for a period of 10 years have been computed and analyzed. The study highlights that irrigation with solar energy for certain crops, namely potato, cotton, soybean, sunfl...
Journal of Cleaner Production, 2019
In this study, the required pumping power and number of PV modules for a photovoltaic water pumping system (PVWPS) were determined with the aim of supplying the water demand in a rice paddy located in north of Iran. Also, a battery bank was utilized as a backup system to increase system reliability in autonomy days. The idea of using PVWPS during non-irrigation months of the year in order to earn money through the sale of electricity generation from solar panels to the grid is one of the main objectives of this research which has not been considered in the previous works. Also, in this research, economic and environmental aspects about PVWPS have been performed and the system performance has been compared with conventional diesel pumping systems (CPS). The results show that although the initial cost of PVWPS in off-grid mode is 2.14 times of the CPS initial cost, its operating and maintenance costs and total life cycle cost (LCC) are respectively 8.7 times and 29.9% lower than that of costs of CPS. Also, the initial cost of PVWPS in the on-grid mode is slightly more than about 2.41 times of the cost of the initial CPS, but its O & M and LCC costs are 7.25 times and 16% lower than those for CPS, while in the case of selling electricity to the grid, it could generate income of $ 8212 in project lifetime, which is equivalent to 59.9% of LCC of the system and results in reducing the costs by 189.2% compared with the final cost of the CPS. Additionally, from environmental viewpoint, the results showed that CO 2 production for off-grid PVWPS during the lifetime of the project is 190e201 times lower than that for the CPS and compared with the supply of power to the motor pump from the grid, CO 2 emissions reduced 16.96 times. Also, by replacing the CPS with PVWPS during irrigation period, it can save about 1820e1722 L of diesel fuel and 85 L of engine oil. Additionally, in on-grid operation, the PVWPS leads to about 71% reduction in noise production than CPS.
A Study on the Present Scenario of Solar Irrigation in Bangladesh
Bangladesh has a primarily agrarian economy. Irrigation plays a very important role in our agriculture as well as on economy. During dry season, irrigation of the whole country faces an acute crisis due to load shedding of 1400 MW [1]. As Bangladesh has good solar resources, with high availability during the peak irrigation season, therefore, solar pumping of water for irrigation is an innovative and environment-friendly solution for its largely agro-based economy. Infrastructure Development Company Ltd (IDCOL) is providing financial support to solar irrigation. Already 450 irrigation pumps have been installed by IDCOL in different divisions of Bangladesh. In this paper, 450 project's data has been analyzed and the findings are shown by different graphs. Different division's radiation, water-head and required water are mainly focused in the analysis which will be very useful for upcoming irrigation projects. To accomplish the analysis on solar irrigation, several field visits were done at Poradaho, Kushtia, Bangladesh. This is a project of Bright Green Energy Foundation (BGEF) and financed by IDCOL. Numerous important prospects of solar irrigation besides Diesel-based Irrigation in Bangladesh have come out from this comparative study.
An Approach for the Economical Evaluation of Solar Irrigation in Bangladesh
This paper represents a comparative picture of irrigation cost of different Bangladeshi crops for diesel, grid electricity and solar power based irrigation systems. The study has been conducted on 27 types of crops. All the data were collected about volume of water for those crops. Then three different types of pump (solar, diesel, electric) have been chosen with same power rating i.e. 5hp. Specific area covered for different crops are calculated furthermore from the attained water volumes. Then finally it has been calculated the 10 years cost in taka. The study found for the entire crops grid powered irrigation cost is minimum than solar powered irrigation cost because the later one is associated with huge primary investment.[12] The study also discovered irrigation with solar power for most of the crops such as onion, carrot, chill, tomato, maize, garlic, gourd, ginger, turmeric, pumpkin, cabbage, cauliflower, lady finger, banana, papaya and groundnut are not beneficial at all rather it costs very high among all the three types of irrigation system.[5] It is also evident that irrigation with solar power of certain crops like potato, cotton, soybean, sunflower, strawberry, lentil, mustard are very much lucrative compared to diesel powered irrigation.
Techno-economic analysis and challenges of solar powered pumps dissemination in Bangladesh
Sustainable Energy Technologies and Assessments, 2017
In this paper, the optimal conditions for solar photovoltaic (PV) irrigation have been identified by doing a technical and economic feasibility study for Bangladesh. The optimum system is found to be a lone PV system for irrigation load below 4 kWh/Day, and a hybrid system of PV-Generator-Battery for loads greater than 4 kWh/Day with storage tank having capacity lower than 20 kWh. Excess electricity fraction can rise up to 83.2% of the total production without adequate storage capability. Alternative use of this excess electricity has to be identified. The levelized COE can be as low as $0.182 with PV in operation only. Replacing a single 1 kW diesel pump with solar PV pump has an Internal Rate of Return (IRR) of 12.95%, simple payback period of 9.33 years, equity payback of 8.26 years, and benefit to cost ratio of 1.08. Net annual GHG reduction of the project is 0.9 tCO2. The present policy issues, and challenges for implementation of solar irrigation pump projects in Bangladesh are also discussed in this paper. Finally, positive outcomes and challenges are identified and recommendations are given to mitigate these challenges.
Technical and Economic Feasibility of Solar Irrigation Pumping System: A Review
Knowledge-Based Engineering and Sciences, 2020
Climate change has become a major constraint to the development of rain-fed agriculture due to the decline of rainfall. Therefore, irrigated agriculture is an alternative allowing farmers to have more access to water in order to meet crop water requirements. However, irrigated agriculture faces a major constraint related to the accessibility of energy sources used in pumping water. In general, the most common energy sources used in pumping water for irrigation are fuel and electricity. Nevertheless, they are very expensive, are not always accessible particularly in rural areas in Africa and have a negative impact on the environment; hence the need to find alternatives to solve this problem. This review focuses on the technical and economic feasibility of solar irrigation pumps and the impact of their use on the environment. Several aspects related to solar pumping have been discussed, namely the components of the solar pumping system, the energy source used, the principle of operati...
Design and Analysis of a Low Cost Solar Water Pump for Irrigation in Bangladesh
Journal of Mechanical Engineering, 2014
Bangladesh, a developing country of south-east Asia with large population has agricultural economy.About 59 percent cultivable land needs irrigation. During dry season and due to climate change, demand ofelectricity for electric power irrigation is increasing. Irrigation by electric power is cheaper than diesel pump.Due to severe shortage of electricity it is difficult to meet the demand. Harnessing solar power for irrigation is agood alternative to grid electricity. This paper deals with the design, technical and economic analysis of a lowcost 1 hp (746 W) small size dc photovoltaic water pumping system for irrigation. A buck converter is designedand constructed to improve the performance of the dc pump. All components of the system are procured locallyexcept the solar panels.DOI: http://dx.doi.org/10.3329/jme.v43i2.17833
Achievements of a Pilot Solar Powered Irrigation Project in Bangladesh
Bangladesh is a country of 160 million people where solar powered irrigation systems have proven to be a viable alternative among other renewable energy sources. The flat terrain and abundant sunshine are the two main factors behind the increasing demand for solar powered systems in this region. In the traditional irrigation system diesel engines or the electricity from the main grid is usually used both of these methods are not friendly to the environment. The use of solar energy to pump ground water is a indigenous low cost solution that is helping the farmers of this middle income country immensely. On the other hand proper regulations should be implemented to regulate the use of water resources in order to avoid depletion of ground water resources. the pilot project also aims to supply the unused electricity during the off peak season to the national grid.