scholarly journals Technical and Economic Assessment for the Promotion of Non- Carbonized Pellets in MSME Sector in Nepal

2020 ◽  
Vol 15 (3) ◽  
pp. 261-266
Author(s):  
Suyesh Prajapati ◽  
Aadit Malla ◽  
Narayan Prasad Adhikari ◽  
Shubha Laxmi Shrestha
Keyword(s):  
Specific Energy Consumption ◽  
Economic Assessment ◽  
Alternative Fuel ◽  
Baseline Scenario ◽  
Suspended Particulate ◽  
Biomass Resources ◽  
Energy Environment ◽  
Industrial Use ◽  
The Cost ◽  
Fuel Source

Pellets are densified biomass fuel compatible for household as well as industrial use. Pellets can be potentially used as an alternative fuel source in many medium, small and micro enterprises (MSME) such as dairy, dyeing, laundry, khoa making, pickle making, yogurt making, soap making enterprises etc. in Nepal. Despite of the presence of large number of such industries and abundant biomass resources, production and application of pellets as a fuel source is almost non-existent in Nepal. Hence, to assess the benefits of using pellets as alternative fuel, an applied research of pellets application was carried out in a dyeing industry. Energy, environment and economic performances of the dyeing industry was compared between the baseline scenario of utilizing sawdust and wood chips mixture in loose form with that of non-carbonized pellets application as an alternative fuel. Results showed decrease in specific energy consumption by 6% on utilizing non-carbonized pellets compared to baseline. In terms of the environmental performance, emission of CO decreased from 100 Mg/L to 10 Mg/L and CO2 emission decreased from 7.5% to 4%. Similarly, suspended particulate matter (SPM) emission decreased from 37.4 mg/Nm3 to 14.8 mg/Nm3 but the negligible increment of NO2 emission was observed. However, emission of SO2 increased significantly from 3.3μgm/m3 to 33.7μgm/m3. High Sulphur content was found in the pellet which could be from the lubrication used in the pellet machine, but this could not be confirmed. The economic analysis revealed that the energy cost was almost twice with pellet application which was mainly because of the higher cost of imported pellets. If the production could be initiated in Nepal, utilizing the abundantly available local biomass resources, the cost could be considerably lowered thus making use of such fuel economically feasible.

scholarly journals Screening for Melanoma by Primary Health Care Physicians: A Cost—Effectiveness Analysis

1996 ◽  
Vol 3 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Afaf Girgis ◽  
Philip Clarke ◽  
Robert C Burton ◽  
Rob W Sanson—Fisher
Keyword(s):  
Cost Effectiveness ◽  
Screening Programme ◽  
Cost Effective ◽  
Economic Assessment ◽  
Screening Tests ◽  
Family Practitioners ◽  
Effectiveness Analysis ◽  
The Cost ◽  
Primary Health Care Physicians ◽  
Melanoma Screening

Background and design— Australia has the highest rates of skin cancer in the world, and the incidence is estimated to be doubling every 10 years. Despite advances in the early detection and treatment of melanoma about 800 people still die nationally of the disease each year. A possible strategy for further reducing the mortality from melanoma is an organised programme of population screening for unsuspected lesions in asymptomatic people. Arguments against introducing melanoma screening have been based on cost and the lack of reliable data on the efficacy of any screening tests. To date, however, there has been no systematic economic assessment of the cost effectiveness of melanoma screening. The purpose of this research was to determine whether screening may be potentially cost effective and, therefore, warrants further investigation. A computer was used to simulate the effects of a hypothetical melanoma screening programme that was in operation for 20 years, using cohorts of Australians aged 50 at the start of the programme. Based on this simulation, cost—effectiveness estimates of melanoma screening were calculated. Results— Under the standard assumptions used in the model, and setting the sensitivity of the screening test (visual inspection of the skin) at 60%, cost effectiveness ranged from Aust$6853 per life year saved for men if screening was undertaken five yearly to $12137 if screening was two yearly. For women, it ranged from $11 102 for five yearly screening to $20 877 for two yearly screening. Conclusion— The analysis suggests that a melanoma screening programme could be cost effective, particularly if five yearly screening is implemented by family practitioners for men over the age of 50.

scholarly journals Thermal Efficiency and Economics of a Boil-Off Hydrogen Re-Liquefaction System Considering the Energy Efficiency Design Index for Liquid Hydrogen Carriers

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4566
Author(s):  
Minsoo Choi ◽  
Wongwan Jung ◽  
Sanghyuk Lee ◽  
Taehwan Joung ◽  
Daejun Chang
Keyword(s):  
Flow Rate ◽  
Life Cycle Cost ◽  
Specific Energy Consumption ◽  
Liquid Hydrogen ◽  
Efficient Design ◽  
Fuel Cell Stack ◽  
Energy Efficiency Design Index ◽  
The Cost ◽  
Large Flow

This study analyzes the thermodynamic, economic, and regulatory aspects of boil-off hydrogen (BOH) in liquid hydrogen (LH2) carriers that can be re-liquefied using a proposed re-liquefaction system or used as fuel in a fuel cell stack. Five LH2 carriers sailing between two designated ports are considered in a case study. The specific energy consumption of the proposed re-liquefaction system varies from 8.22 to 10.80 kWh/kg as the re-liquefaction-to-generation fraction (R/G fraction) is varied. The economic evaluation results show that the cost of re-liquefaction decreases as the re-liquefied flow rate increases and converges to 1.5 $/kg at an adequately large flow rate. Three energy efficient design index (EEDI) candidates are proposed to determine feasible R/G fractions: an EEDI equivalent to that of LNG carriers, an EEDI that considers the energy density of LH2, and no EEDI restrictions. The first EEDI candidate is so strict that the majority of the BOH should be used as fuel. In the case of the second EEDI candidate, the permittable R/G fraction is between 25% and 33%. If the EEDI is not applied for LH2 carriers, as in the third candidate, the specific life-cycle cost decreases to 67% compared with the first EEDI regulation.

scholarly journals Eucalyptus sp. WOODCHIP POTENTIAL FOR INDUSTRIAL THERMAL ENERGY PRODUCTION1

2017 ◽  
Vol 41 (6) ◽  
Author(s):  
Marcos Antonio da Silva Miranda ◽  
Gabriel Browne de Deus Ribeiro ◽  
Sebastião Renato Valverde ◽  
Crismeire Isbaex
Keyword(s):  
Energy Source ◽  
Thermal Energy ◽  
Fossil Fuels ◽  
Forest Biomass ◽  
Dairy Industry ◽  
Industrial Sector ◽  
Cost Ratio ◽  
Planted Forests ◽  
Industrial Use ◽  
The Cost

ABSTRACT The main objective of this work was to identify and analyze the potential of forest biomass of Eucalyptus sp. such as thermal energy source for industrial use in place of fossil fuels. Two cases were analyzed: the first one estimated the total demand for forest biomass to replace the main fossil fuels in Brazilian industrial sector, with scenarios of 100, 75 and 50% replacement; in the second, it was calculated the cost of each fuel for producing ton of industrial steam (thermal energy) for a dairy industry, in order to verify the competitiveness of forest biomass compared to fossil fuels. The results showed that the areas demanded to replace 100, 75 and 50% of the analyzed fossil fuels were, respectively, 2.9, 2.2 and 1.5 million planted forests hectares, and the steam ton cost ratio using the woodchips was at least 34% lower than with other fuels, which corroborates the substitution potential in this sector.

scholarly journals ECONOMIC ASSESSMENT OF CHANGES IN HYDROLOGICAL REGULATION ECOSYSTEM SERVICE FROM THE NEGATIVE IMPACT OF UNAUTHORIZED MUNICIPAL SOLID WASTE LANDFILLS

2021 ◽  
Author(s):  
Olena Kobzar
Keyword(s):  
Ecosystem Services ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Ecosystem Service ◽  
Scientific Literature ◽  
Negative Impact ◽  
Economic Assessment ◽  
Municipal Solid Waste Landfills ◽  
The Cost ◽  
Solid Waste Landfills

The problem of the formation of unauthorized municipal solid waste landfills is very urgent in the world. Municipal solid waste landfills affect the state of ecosystem assets of territorial communities and, accordingly, the flow of ecosystem services. The economic assessment of qualitative and quantitative changes of ecosystem services as a result of the negative impact of unauthorized landfills is a basic element of an effective policy in the field of municipal solid waste management. One of the ecosystem services, the assessment of which is given a lot of attention in the scientific literature is the hydrological regulation ecosystem service. The aim of the research is the economic assessment of changes in hydrological regulation ecosystem service from the negative impact of unauthorized municipal solid waste landfills. In the scientific literature, the economic assessment of hydrological regulation ecosystem service is considered as a function of the increase in the river or underground runoff and the cost of water. It is proposed to calculate the economic assessment of changes in hydrological regulation ecosystem service from the negative impact of unauthorized municipal solid waste landfills as a function of: the magnitude of the change in groundwater flow in the summer from the negative impact of unauthorized municipal solid waste landfill; tax rates for water abstraction from an underground source; landfill area; the coefficient of changes in the structure of the ecosystem within the landfill (destruction of vegetation cover); the area of impact of the landfill (outside the landfill) on the ecosystem; coefficient of change in the area of impact of the landfill. Changes in the hydrological regulation ecosystem service from the negative impact of unauthorized municipal solid waste landfills on the territory of the Korostyshevskaya territorial community of the Zhytomyr region have calculated. The main problems of assessing changes in hydrological regulation ecosystem service from the negative impact of unauthorized municipal solid waste landfills are identified: obtaining reliable and complete factual information about changes in underground runoff and the characteristics of the ecosystem from the negative impact of unauthorized municipal solid waste landfills within the landfill and the zone of its influence. Due to the insignificant value of the cost of changing the hydrological regulation ecosystem service, it was concluded that it is inexpedient to take it into account when making managerial decisions about small and low-power unauthorized municipal solid waste landfills.

Cost-effectiveness analysis of Baby-Friendly Hospital Initiative in promotion of breast-feeding and reduction of late neonatal infant mortality in Brazil

2020 ◽  
pp. 1-11
Author(s):  
Osvaldinete Lopes de Oliveira Silva ◽  
Marina Ferreira Rea ◽  
Flávia Mori Sarti ◽  
Gabriela Buccini
Keyword(s):  
Cost Effectiveness ◽  
Mortality Rate ◽  
Infant Mortality ◽  
Neonatal Mortality ◽  
Breast Feeding ◽  
Cost Effective ◽  
Economic Assessment ◽  
Baby Friendly Hospital Initiative ◽  
Effectiveness Analysis ◽  
The Cost

Abstract Objective: To analyse the cost-effectiveness of Baby-Friendly Hospital Initiative (BFHI) in promoting breast-feeding during the first hour of life (BFFHL) and reducing late neonatal mortality. Design: Cost-effectiveness economic assessment from the health system perspective, preceded by a prospective cohort of mother–baby followed from birth to 6 months of life. The direct costs associated with two health outcomes were analysed: intermediate end point (BFFHL) and final end point (reduction in late neonatal mortality). Setting: Study was carried out in six hospitals in the city of São Paulo (Brazil), three being Baby-Friendly Hospitals (BFH) and three non-BFH. Participants: Mothers with 24 h postpartum, over 18 years old, single fetus and breast-feeding at the time of the interview were included. Poisson regressions adjusted for maternal age and level of education were estimated to identify factors related to BFFHL and late neonatal mortality. Sensitivity analysis was performed to ensure robustness of the economic assessment. Results: Cost-effectiveness analysis showed that BFHI was highly cost-effective in raising BFFHL by 32·0 % at lower cost in comparison with non-BFHI. In addition, BFHI was cost-effective in reducing late neonatal mortality rate by 13·0 % from all causes and by 13·1 % of infant mortality rate from infections. Conclusions: The cost-effectiveness of the BFHI in promoting breast-feeding and reducing neonatal mortality rates justifies the investments required for its expansion within the Brazilian health system.

Evaluation of Possible Use of Foliage as a Fuel for Small Combustion Equipment

2014 ◽  
Vol 899 ◽  
pp. 218-221 ◽  
Author(s):  
Lubomír Martiník ◽  
Vendula Drastichová ◽  
Jiří Horák ◽  
Zuzana Jankovská ◽  
Petr Kubesa
Keyword(s):  
Power Plants ◽  
Alternative Fuels ◽  
Alternative Fuel ◽  
Biomass Fuels ◽  
High Demand ◽  
Fallen Leaves ◽  
Fuel Source

Biomass is a common fuel for small combustion equipment and also for heating plantsand power plants. Combustion of firewood, wood briquettes and pellets dominates in households.Thanks to high demand for biomass fuels its prices grow and it is necessary to look for cheaperalternatives. One of the alternative fuels can be foliage. In cities there is in autumn usually a plentyof fallen leaves. These leaves - foliage has to be composted or otherwise disposed of. Instead oftreating foliage as a waste it can be used as an alternative fuel. To serve as a viable fuel source thefoliage has to be processed into briquetts.This article deals with possibilities of producing briquettes from foliage and evaluation of theircombustion quality in small combustion equipment.

scholarly journals Reduction in Operating Costs and Environmental Impact Consisting in the Modernization of the Low-Power Cylindrical Wood Chipper Power Unit by Using Alternative Fuel

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2995 ◽  
Author(s):  
Łukasz Warguła ◽  
Mateusz Kukla ◽  
Piotr Krawiec ◽  
Bartosz Wieczorek
Keyword(s):  
Low Power ◽  
Fuel Consumption ◽  
Power Unit ◽  
Flow Rate ◽  
Internal Combustion ◽  
Alternative Fuel ◽  
Supply System ◽  
Fuel Supply ◽  
Fuel Supply System ◽  
The Cost

Alternative fuel within the meaning of Directive 2014/94/EU is, among others, LPG (liquefied petroleum gas), characterized by a lower purchase cost and lower emissions of toxic exhaust compounds in comparison to the combustion of classic gasoline. In wood chippers, intended for chopping branches, with low-power internal combustion engines that meet the emission standards in force in 2019 in the European Union, in accordance with Regulation 2016/1628/EU, carburetor fuel supply systems are commonly used. Innovative trends in the development of these drives are: electronic fuel injection, systems supporting the adaptation of the working elements to the conditions of use and the use of alternative fuels. The first two solutions significantly affect the cost of purchasing a power unit or modernizing it. The authors of this article indicate, as a beneficial alternative, a cheap (EUR 105) possibility of modernizing the carburetor fuel supply system. It is based on a modification that will allow for the use of LPG instead of gasoline to drive the working system of the wood chipper. This article presents the results of tests on the fuel consumption of a wood chipper powered with gasoline (3.04 L h−1) and LPG (3.65 L h−1) during continuous chipping. The cost of an hour of chipping related to fuel consumption was determined, which was equal to 3.89 € h−1 while using gasoline, and 2.19 € h−1 when using LPG. The mass flow rate (0.66 t h−1) and volumetric flow rate (3.5 m3 h−1) of a wood chipper powered by a low-power (9.5 kW) internal combustion engine with spark ignition were determined. In addition, we determined the cost of producing 1 m3 of biomass from chipping freshly cut oak branches (Quercus robur L. Sp. Pl. 996 1753) with a maximum diameter of 80 mm and a humidity of 25%. The branches were selected earlier in such a way that their dimensions as as similar as possible. This amounted to EUR 1.11 for a gasoline-powered drive and EUR 0.63 for a LPG powered one. The benefits of using an alternative fuel supply system, the installation of which increases the cost of the machine by 8.4%, have been confirmed.

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