This study aims to determine the most cost-effective approach for production of green hydrogen, a crucial element global decarbonization efforts despite its high costs. The primary research question addresses optimal and economically viable strategy hydrogen considering various scenarios technologies. Through comprehensive analysis eight scenarios, employs economic parameters such as net present value, minimum cost, payback period sensitivity analysis. is validated using established metrics...

A small-scale solar organic Rankine cycle (ORC) is a promising renewable energy-driven power generation technology that can be used in the rural areas of developing countries. prototype was developed and tested for its performance characteristics under range source temperatures. The ORC system output calculated based on thermal collector efficiency. maximum observed April. unit ranged from 0.4 kW to 1.38 during year. highest obtained when expander inlet pressure 13 bar temperature 120 °C....

This paper introduces the concept of installing a small-scale organic Rankine cycle system for generation electricity in remote areas developing countries. The Organic Cycle Systems (ORC) uses commercial magnetically-coupled scroll expander, plate type heat exchangers and plunger working fluid feed pump. source ORC can be solar energy. A series laboratory tests were conducted to confirm efficiency expander power output system. Using actual data, exergy destruction on components assessed....

Fifteen (15) organic fluids were thermodynamically modeled to evaluate their fitness and performance as working in an Organic Rankine Cycle (ORC) based cogeneration system. This article presents the exergy efficiency, thermal solar power cycle mass flow rate, heat input, required area of collector hot water production for evaluated low-temperature (90 medium-temperature (125 cycles. Thermodynamic modeling was carried out using a commercial 1 kW scroll expander, two compact exchangers,...

Background: Falconeria insignis Royle, a medicinal plant of the Euphorbiaceae family, has been extensively used in Nepal for bacteria-infected wounds, despite lack empirical evidence supporting its efficacy. Objectives: This study aims to evaluate phytopharmaceutical potential F. leaves and stems combating oxidative stress bacterial infections. Methods: Phytoconstituents were characterized using LC-MS technique. The antioxidant activity was evaluated through DPPH, nitric oxide, hydroxyl...

The current study presents the concept of a stand-alone solar organic Rankine cycle (ORC) water pumping system for rural Nepalese areas. Experimental results this technology are presented based on prototype. economic viability was assessed radiation data different geographic locations. mechanical power produced by ORC is coupled with various applications, such as drinking and irrigation. thermal efficiency found to be 8% an operating temperature 120 °C. hot unit has 40 Economic assessment...

The current research study focuses on the feasibility of stand-alone hybrid solar-geothermal organic Rankine cycle (ORC) technology for power generation from hot springs Bhurung Tatopani, Myagdi, Nepal. For study, temperature spring was measured particular site heat source spring. could be used operating ORC system. Temperature can also further increased by adopting solar collector rising temperature. This type system have a high-temperature which more energy technology. There are various...

This paper presents the efficiencies such as exergy, thermal, solar power cycle efficiency, along with heat input and area of collector for 4 selected working fluids.Thermodynamic modeling was carried out using a commercial scroll expander, two compact exchangers, diaphragm pump collector.The software Engineering Equation Solver (EES) used calculating parameters various fluids.The analyzed fluids have been recommended ORC.Furthermore, economic analysis powered ORC system has cost overall...

Abstract The solar organic Rankine cycle (ORC) system for power generation with thermal storage type may be one of the promising technologies prolonging generation. ORC is feasible investment due to higher production. In addition, heat source temperature plays an important role in investment. main aim study investigate systems from thermoeconomic point view. paper provides recommendations a suitable class which can economically feasible. Besides, economics and analysis carried out order find...

Abstract Sloped solar chimney power plant (SSCPP) could be one of the appropriate technologies for powering Nepalese communities. The main components are chimney, collector and power-generating unit. In this study, mathematical evaluation SSCPP has been conducted estimation generation in context. For analysis, models have developed from governing equations. parameters such as height radius, ambient temperature insolation taken inputs simulation overall system. output system efficiency, air...

The present describes and simulates the temperature distribution of slurry by using heat equation appropriate boundary conditions their numerical simulations with Finite Element Method. This method is suitable to describe profile in Bio-digester Bio-rectors for optimum biogas production. Mathematical modeling bio-digester helps us understand change digester ambient temperature, internal generation, thermal conductivity other physical thermo-dynamical processes that govern system. can also be...

Abstract The present study aims to investigate the thermodynamic and financial aspect of concentrated solar power (CSP) plant hybridized with biomass-based organic Rankine cycle (ORC), thermal energy storage (TES), hot springs CO2 capture systems. working fluids namely R123, R235fa, D4 MDM are selected for designing hybrid system at different operating conditions. nominal capacities CSP biomass ORC plants 1.3 MW 730 kW respectively. Additionally, a parametric has been carried out understand...

Abstract The utilization of solar organic Rankine cycle (ORC) technology in Nepal shows promise due to its ample radiation. This should be harnessed for the purpose generating energy. academic version engineering equation solver was used develop simulation models, which predict potential ORC power generation across country. study is limited areas with irradiance 5.5 kWh/m 2 /day and excludes certain regions. installation plant requires open land access water, a 10 km area considered...

This study presents about the analysis of sediment generation ungauged basin Fusre by modeling and also with help rainfall simulator. Many rivers in Nepal are either or poorly gauged due to extreme complex terrains, monsoon climate lack technical financial supports. The Soil Water Assessment Tool (SWAT) was applied for watershed delineation delineated into seven sub-basin that generate river network, which provides information like stream link, order, length, slope etc. calibration performed...

The use of a solar organic Rankine cycle (ORC) system in small-scale power generation has attracted recent interest for powering rural areas developing countries. technology uses parabolic trough thermal collector, heat exchangers and scroll expanders (for the expansion process) coupled with generator electricity production. This paper describes potential ORC systems South Asian countries different working fluids to fulfill present future energy demands these not been assessed appropriately...