Analysis of Thermoelectric materials for heating applications in Automobiles

In today’s world with the technological advancements, all that has been considered as slags and waste can be utilized to its maximum therefore attaining sustainability. Thermoelectric devices are now being used in various applications including cooling and heating processes in electronics and automobiles. The choice of materials for these thermoelectric devices are essential in order to determine the parameters such as temperature gradient, thermo emf and total heat dissipated with the help of Seebeck, Peltier and Thomson co-efficients. The elements for the thermoelectric device are arranged by their thermo emf produced in the thermoelectric series. This has been taken into account for the selection of materials for the heating device, analyzed in this article. In certain cold countries, temperature can drop below 10°C, which is very much near its cloud point and pour point of petroleum fuels. Thermoelectric devices will thereby come to use in these places to maintain the temperature above the cloud point of the fuel. This study also focuses on another application of waste heat recovery in automobile engines to produce thermo emf, which can be utilized for small scale electronics in automobiles. In this study, materials are analyzed for the previously mentioned applications.

Utilization of Starch Water as Bioethanol using Fermentation Method and Bioactivator with NPK and Urea

Researchers are looking for sustainable alternative fuels that may be utilized as substitutes for petroleum-based materials due to the problem of dwindling petroleum fuels, rising energy demand, and concerns about rising environmental pollution. The solution to this problem is to produce renewable energy. Bioethanol is a product that has a lot of potential in terms of its utility renewable sources of energy In this project, bioethanol will be generated from household waste, namely starch water (rice boiled water), which includes a significant amount of starch and hence has the potential to be used as a raw material for generating bioethanol, as well as reducing household waste, Better still. Fermentation, hydrolysis, neutralization, and distillation are the processes employed in this study. The starch water is used because it has a significant amount of starch (rice cooking water). Because the starch content is not extracted perfectly during the boiling process, it is compared to typical rice washing water. Bioethanol is the end product, and it is intended to be a sustainable energy that will help to solve the energy issue while also reducing and repurposing household trash.

Ecotoxicity and Associated Threat of Polycyclic Aromatic Hydrocarbons (PAHs) to Biodiversity: A Review

There is a sustained rise in incidence of cancer and toxicity related to chemicals exerting enormous burden to public health and biodiversity. Polycyclic Aromatic Hydrocarbons (PAHs) are mong such contaminants, precisely the sixteen-priority characterized by United States Environmental Protection Agency (USEPA). Therefore, this review is aimed at further elaboration about the 16 USEPA characterized PAHs and threat portend to public health and biodiversity. PAHs are a class of very stable organic pollutants produced most commonly, by incomplete combustion of fossil fuel and are formed when complex organic substances are exposed to heat. PAHs in great amount due to build up over time by bioaccumulation can be perilous: to human beings of all age and levels, aquatic organisms, amphibians and reptiles. The soil like the aquatic environment contains substantial quantity of PAHs since, atmospheric PAHs sediments on the soil due to dry and wet deposition, terrestrial organism are impacted if the soil is saturated with PAHs. Therefore, PAHs are a great source of trepidation for food safety, public health and biodiversity sustenance. Hence, tackling the spade of the menacing ubiquity of PAHs becomes necessary from its sources by encouragement of alternatives to petroleum fuels for machines and vehicles.

Life cycle impact assessment of biofuels derived from sweet sorghum in the U.S.

Background The objective of this study was to evaluate the environmental impact of the production of a range of liquid biofuels produced from the combination of fermenting sorghum stalk juice (bioethanol) and the pyrolysis/hydrotreatment of residual bagasse (renewable gasoline and diesel). Life cycle impact assessment (LCIA) was performed on a farm-to-wheels system that included: (i) sorghum farming, (ii) juice extraction, (iii) juice fermenting, (iv) bagasse pretreatment, (v) bagasse thermochemical treatment (pyrolysis, hydroprocessing, and steam reforming), and (vi) typical passenger vehicle operation. LCIA results were compared to those of petroleum fuels providing the equivalent functional unit—cumulative kilometers driven by spark ignition direct injection (SIDI) vehicles utilizing either renewable gasoline or ‘bioE85—a blend of bioethanol and renewable gasoline,’ and a compression ignition direct injection (CIDI) vehicle utilizing renewable diesel produced from 76 tons of harvested sweet sorghum (1 ha). Results Sweet sorghum biofuels resulted in a 48% reduction climate change impact and a 52% reduction in fossil fuel depletion. Additionally, reduced impacts in ozone depletion and eutrophication were found (67% and 47%, respectively). Petroleum fuels had lower impacts for the categories of non-carcinogenic health impact, smog, respiratory effects, and ecotoxicity, showing tradeoffs between sorghum and petroleum fuels. Conclusion Overall, sorghum biofuels provide advantages in environmental impact categories including global warming potential, fossil fuel depletion and eutrophication, showing potential for sorghum as a promising second-generation feedstock for fuel.

Energy Scenario of Three Wheeler Electric and Gasoline Vehicle in Hetauda

The global shifting away from petroleum fuels and towards more renewable energy sources has resulted in a significant progress in favor of vehicle electrification. The uptake of electric vehicle in the existing fleet of vehicles has positive impacts in the reduction of emissions and reduces the carbon footprints by moving in to greener transport. Nepal is a hydropower resource rich developing country; it can use its clean source of hydroelectricity for public transport electrification. Use of hydroelectricity for transport electrification can help to reduce the dependence on petroleum fuels with significant environmental benefits. This study aims to analyse energy scenarios of Hetauda through primary data survey of 4086 three wheeler as 1874 and 2212 as gasoline and electric respectively. Three scenarios are considered business-as-usual (BAU), ETRM 100 (100% electric tempo replacement)and ETRM 75 (75% electric tempo replacement). Energy demand of Hetauda is 230.4TJ and will be increased to 333.5TJ for the accounting year 2018 and 2035 respectively.

Hydrogen for transport

In recent years, efforts to use environmentally friendly resources and minimizing environmental impacts throughout the life cycle of products. The important point is that greening and reducing emissions from energy industry and transport. If we focus on emissions from transport, these are mainly CO2, NOx and particulate emissions. These emissions arise mainly from the use of fossil fuels. In the transport sector, local CO2, NOx and particulate emissions can be reduced by introducing hydrogen mobility that does not produce these emissions and can be based on renewable energy sources. The contribution shows that the overall efficiency of the conversion of chemical energy into mechanical energy of the vehicle wheel movement, the socalled Well to Wheel (WtW) is the highest in the case of petroleum fuels (84%). The lowest efficiency WtW is in the case of hydrogen produced from water electrolysis. When assessing the overall efficiency WtW (fuel and utilization) is the highest value (18–21 %) in the case of a combination of fossil fuel and the combustion engine. The lowest value of the total efficiency is for the combination of hydrogen produced by electrolysis of water and the combustion engine (3–5 %).

A COMPREHENSIVE REVIEW ON KARANJA OIL AS AN ALTERNATIVE FUEL FOR DIESEL ENGINE

The strict emission laws, deteriorating environmental conditions, the depletion of oil reserves and the increasing price of petroleum fuels have forced the world to find alternatives fuels. Biodiesel, the promising alternative fuel can be used in diesel engines with little or no modifications. The properties of biodiesel are similar to those of diesel fuels. It can use as a fuel in diesel engine by blending with diesel The use of non-edible oil is more beneficial as compared with edible oil. Various non-edible oil seeds like Jatropha, Karanja, Neem etc. are widely available in India. Among them, Karanja has a potential to be used for the production of biodiesel. Karanja, are multipurpose non-edible plants can be cultivated on any type of soil such as degraded forests, boundaries of roads and irrigation canals. Its seeds contain 27–39% of the oil. This paper provides a comprehensive review on the important contributions of researcher work on Karanja oil and its blend as alternative fuel for diesel engine .The performance parameters evaluated include brake specific fuel consumption, brake thermal efficiency and emission parameters of karanja bio diesel and its blends are described. It is observed that Karanja oil can be used as alternative fuel for diesel engine.

Prestasi Pembakaran Biodiesel Berasaskan Minyak Bunga Matahari Ke Atas Pembakar Berbahan Api Cecair

The current study investigated the combustion performance of sunflower oil-based biodiesel fuel blends with diesel at the ratio of B10 (10% biodiesel, 90% diesel), B15 (15% biodiesel, 85% diesel), B25 (25% biodiesel, 75% diesel) and B50 (50% biodiesel, 50% diesel). The combustion performance of this fuel is evaluated based on the value of the combustion chamber wall temperature, the thermal efficiency of the burner as well as the concentration of emission gases released such as nitrogen oxides (NOx), sulfur dioxide (SO?), and carbon monoxide (CO). Sunflower oil-based biodiesel blend fuel was measured and compared to diesel. All fuels tested were burned using a combustion chamber with one of its ends open, at five different equivalence ratios, namely, fuel-lean condition (? = 0.8 and 0.9), stoichiometry (? = 1.0), and fuel-rich (? = 1.1 and 1.2). The results show that sunflower oil-based biodiesel fuels burn at lower temperatures. This results in lower fuel thermal energy, and thus, lower thermal efficiency of the burner compared to diesel. Moreover, the emissions produced are lower (except for NOx) compared to diesel for all equivalence ratios. The results also show that the use of biodiesel is useful for different modern applications, especially in the industrial sector as it is more environmentally friendly and can be used as an alternative to petroleum fuels.