Arvind Chel

Sizing and cost estimation methodology for stand-alone residential PV power system

This paper investigates the sizing and costing methodology for a stand-alone photovoltaic (SAPV) power system based on the number of sunshine hours available in the world. The sizing and costing of the PV system for the electrical load of 3.65 kWh/day was presented in this paper for different continents of the world. The unit cost of electricity generated from the PV system was determined based on their life cycle cost analysis. The capital cost and unit cost of electricity for the SAPV systems were evaluated as

Exergetic analysis of passive and active solar stills

9,198/kWp and

Agrowaste Materials as Composites for Biomedical Engineering

0.6/kWh respectively for India. The total CO2 emission mitigated by the PV power system in its lifespan was estimated at 63 tons which correspond to the carbon credits of

Methods of Pesticide Residues Reduction in Grains

2,048.

Viable Tailored Organic Fertilizer Alternatives From Waste Produced by Bio-Diesel Extraction Process and Tobacco Industry

This paper presents an exergetic analysis for passive and active solar distillation systems. The analysis is based on mass, energy and exergy balance equations, which has not been attempted in the past for active solar stills. In the present paper, it has been tried to compare the hourly exergy and thermal efficiency of passive and active solar stills. The values of hourly exergy and thermal efficiency of passive solar still are 0.1?0.8% and 2?17% while those for active solar still are in the range 0.1?1.1% and 3 15%, respectively. In case of active solar still, the effect of water depth and number of collectors on overall exergy and thermal efficiency have been obtained.

Simplified method of sizing and life cycle cost assessment of building integrated photovoltaic system

Presently steel and plastic are widely used in the manufacture of various products such as doors, false ceilings, toys, boxes for agricultural use, rims, and mobile panels. However, it is evident that both these materials are neither economical nor eco-friendly, and their presence poses serious impacts for the user and the environment. Efforts are underway for research and development in agro-waste fibers, which have shown immense potential as alternative to conventional man-made materials. Agro-waste fibers such as bagasse, rice husk, coconut, banana, and sisal fibers hold significant potential as “Natural Green Composite” due to their high strength, environment-friendly nature, low cost, availability, and G. Kaushik (*) · A. Chel MGM’s Jawaharlal Nehru Engineering College, Mahatma Gandhi Mission, Aurangabad, Maharashtra, India P. Singhal Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India Indian Institute of Management, Calcutta, India

Concentrations of fine, ultrafine, and black carbon particles in auto-rickshaws in New Delhi, India

Food is the basic necessity of life. However, over the last decade food quality and safety issues have caused a serious concern among the consumers on account of their direct impact on the human health. Unsafe food contaminated with pesticide residues poses serious risk to the health of consumers particularly in the developing countries where pesticides are inadvertently sprayed in high doses. Organic farming and other approaches are effective in dealing with pesticide contamination but would take significant time in being adopted worldwide. Therefore, simple as well as effective solution in the transient phase is offered by domestic processing techniques such as washing, cooking, milling, parboiling, storage, etc. It is concluded that a combination of processing techniques renders food grains safe for human consumption.

Parametric study of an active and passive solar distillation system: Energy and exergy analysis

Rapid depletion of conventional sources of energy and the growing environmental concern of their use warrant urgent attention to look for suitable energy alternatives. In this regard the seeds of Jatropha curcas, constituting 40–50% bio-crude oil are considered as one of the most promising alternatives for the production of bio-diesel. It is estimated that about 1.5 tons de-oiled cake is produced from seeds obtained from one hectare of plantation, utilized for bio-diesel extraction process. Being non-edible due to its toxic contents, cost effective safe disposal of this by-product can only be possible if there is a meaningful utilization. India’s tobacco industry is the second largest in the world after China, having vast area under tobacco cultivation. The wastes from tobacco industry lead to significant environmental pollution that has severe impacts on both flora and fauna. A few studies on this aspect have revealed that Jatropha and tobacco bio-wastes have potential to be used as organic fertilizers. The present study aims at developing appropriate bio-processes and formulation that utilize Jatropha seed cake and waste of tobacco industry as organic fertilizer for improving the growth of Chrysanthemum, a flower variety valued for its beauty and fragrance and having wide applications in cosmetic and perfumery products. Pot experiments were carried out by adding specific proportions of Jatropha de-oiled cake and tobacco waste to normal garden soil. The growth and morphological parameters of Chrysanthemum plants grown in pots prepared by the treated soil were monitored for 4–5 months and the results were recorded. The results have been encouraging as the treatments lead to a significant enhancement in flower growth as well as yield. 11.5% increase in number of buds per plant was recorded for treated soil as compared to the control soil. The number of flowers per plant also recorded an increase of 16% to 24% due to the effect of formulation applied to the soil. Similar trends were observed for other parameters like flower size, flower head size, flower weight and ray floret number. Through experimentation new composted organic fertilizer formulations, tailored to specific commercial crop has been developed. The research findings would enable these bio-wastes to be used as a viable alternative to the energy intensive chemical fertilizers for floriculture, thus contributing to the mitigation of global climate change. This addition in the value chain would improve the financial viability of bio-diesel extraction process. This new synergistic organic fertilizer formulation when used as an alternative to nitrogenous chemical fertilizers would also provide an opportunity to earn carbon credits which is estimated to be € 67904 millions/year.Copyright