Biomass energy surveying and techno-economic assessment of suitable CHP system installations

2002 ◽  
Vol 22 (2) ◽  
pp. 105-124 ◽  
Author(s):  
D.P. Papadopoulos ◽  
P.A. Katsigiannis
Keyword(s):  
Economic Assessment ◽  
Biomass Energy ◽  
Chp System

A modeling approach for low-temperature SOFC-based micro-combined heat and power systems

2019 ◽  
Vol 33 (04) ◽  
pp. 1950001 ◽  
Author(s):  
Fida Hussain ◽  
M. Ashfaq Ahmad ◽  
Saeed Badshah ◽  
Rizwan Raza ◽  
M. Ajmal Khan ◽  
...  
Keyword(s):  
Power Systems ◽  
Energy Use ◽  
Economic Assessment ◽  
Combined Heat And Power ◽  
Hydrogen Gas ◽  
Energy Resources ◽  
Efficient System ◽  
Operating Strategies ◽  
End Use ◽  
Chp System

The world’s challenge is to determine a more efficient, economical and environmental-friendly energy source to compete and replace the ongoing conventional energy resources. Solid oxide fuel cells (SOFCs) provide a highly efficient system to use divergent energy resources and have proved to provide the cleanest energy, least energy use, and lowest emissions. A techno-economic study is required to investigate the model design for SOFC-based micro-combined heat and power (m-CHP) systems for applications in terms of educational and commercial buildings. This work models and explores the optimized application of hydrogen gas-fueled SOFC-based m-CHP systems in educational buildings. Two educational departments’ loads are presented and model of SOFC-based m-CHP system against the different electric power demands is performed, in order to provide a techno-economic assessment of the technology. For successful development of the technology, results are related to system rightsizing, operating strategies, thermal to electric ratios, and match between end-use, with an aim towards classifying the overall feasibility and essential application requirements.

scholarly journals Economic Assessment of Micro-CHP System for Residential Application in Shanghai, China

2016 ◽  
Vol 88 ◽  
pp. 732-737 ◽  
Author(s):  
Qiong Wu ◽  
Hongbo Ren ◽  
Weijun Gao
Keyword(s):  
Economic Assessment ◽  
Chp System

scholarly journals ECONOMIC EFFECTIVENESS OF INVESTMENT IN BIOENERGETIC CULTURE GROWING IN THE ZONES OF FOREST OF UKRAINE

2018 ◽  
pp. 21-29
Author(s):  
Mykhaylo Humentyk ◽  
Yuriy Hayda ◽  
Yaroslav Fuchylo
Keyword(s):  
Economic Assessment ◽  
High Energy ◽  
Biomass Energy ◽  
Bioenergy Crops ◽  
Energy Output ◽  
Forest Steppe ◽  
Investment Efficiency ◽  
Planting Material ◽  
Energy Plantations ◽  
State Programs

Introduction. One of the most promising areas of renewable energy development is the use of biomass energy. It contributes to the economy of traditional fuels and does not increase the global greenhouse effect. However, insufficient economic efficiency of obtaining energy from biomass under the current conditions necessitates the state's "paternalism" to the bioenergy industry. Purpose. The article aims to carry out an economic assessment of the effectiveness of investing in the cultivation of highly productive energy crops (giant miscanthus and energy willow) using modern technologies under the conditions of the Ukrainian forest-steppe. Method. The research was conducted during 2012-2016 on the basis of experimental energy plantations in Ternopil, Volyn and Kyiv oblasts. The assessment of the effectiveness of investment in bioenergy crops is based on a set of criteria: net discounted profit (NPV), investment profitability index (PI), internal rate of return (IRR), discounted payback period (DPP). Results. It has been established that on plantations of willow, the volume of dry biomass on average over the five-year period of research amounted to 27,3 t · ha-1, and to the miscanthus - 25,3 t · ha-1. Accordingly, the energy output per unit area was somewhat higher in energy willow (573.3 GJ · ha-1 versus 516.2 GJ · ha-1). Willow and miscanthus are characterized by high-energy coefficients compared with other bioenergy crops, which can reach values 54.3 and 55. It indicates the significant energy efficiency of investing in the cultivation of these crops. The analysis of the sensitivity of bioenergy projects has found out that the most significant NPV investment in the plantation of the miscanthus can be influenced by the volatility of the productivity of the crop, the price of biofuels and planting material, and for the willow plantation - fluctuations in the yield of biomass, its price and discount rate. The estimation of the investment efficiency in the bio-energy plantations of the miscanthus and willows has revealed the need to work out state programs of financial support for the creation of plantations of bioenergy crops and legislative mechanisms for their implementation.

scholarly journals Techno-economic assessment of a hybrid RO-MED desalination plant integrated with a solar CHP system

2022 ◽  
Vol 251 ◽  
pp. 114985
Author(s):  
Farid Jalili Jamshidian ◽  
Shiva Gorjian ◽  
Mehdi Shafieefar
Keyword(s):  
Economic Assessment ◽  
Desalination Plant ◽  
Chp System

scholarly journals Techno-Economic Assessment of CHP Systems in Wastewater Treatment Plants

Environments ◽  
2020 ◽  
Vol 7 (10) ◽  
pp. 74
Author(s):  
Derall M. Riley ◽  
Jiashen Tian ◽  
Gamze Güngör-Demirci ◽  
Patrick Phelan ◽  
J. Rene Villalobos ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Net Present Value ◽  
Wastewater Treatment Plants ◽  
Biogas Production ◽  
Treatment Plant ◽  
Economic Assessment ◽  
Prime Mover ◽  
Current State ◽  
Prime Movers ◽  
Chp System

Wastewater treatment plant (WWTP) utilization of combined heat and power (CHP) systems allows for the efficient use of on-site biogas production, as well as increased annual savings in utility costs. In this paper, a review of biogas energy recovery options, CHP prime mover technologies, and the costs associated with biogas cleaning give a broad summary of the current state of CHP technology in WWTPs. Even though there are six different prime mover technologies, the main ones currently being implemented in WWTPs are micro turbines, fuel cells and reciprocating engines. Different prime movers offer varying efficiencies, installation costs, and biogas impurity (H2S, siloxanes, HCl) tolerances. To evaluate the long-term savings capabilities, a techno-economic assessment of a CHP installation at a case study WWTP shows the payback, annual savings, and initial costs associated with the installation of a CHP system. In this case, a study a payback of 5.7 years and a net present value of USD 709,000 can be achieved when the WWTP generates over 2,000,000 m3 of biogas per year and utilizes over 36,000 GJ of natural gas per year.

ECONOMIC ASSESSMENT OF PUBLIC HEALTH

2020 ◽  
Vol 14 (3) ◽  
Author(s):  
Natalia Afonina ◽  
Svetlana Goncharova
Keyword(s):  
Public Health ◽  
Economic Assessment

Biorefinery implementation for recovery debottlenecking at existing pulp mills- Part II: Techno-economic evaluation

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 17-24 ◽  
Author(s):  
HAKIM GHEZZAZ ◽  
LUC PELLETIER ◽  
PAUL R. STUART
Keyword(s):  
Cost Estimation ◽  
Process Model ◽  
Black Liquor ◽  
Pulp Mill ◽  
Value Added ◽  
Economic Assessment ◽  
Extraction Process ◽  
Estimation Methods ◽  
Precipitation Process

The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery options have been calculated using standard cost estimation methods. The results show that the two biorefinery options are profitable for the case study mill and effective at process debottlenecking. The after-tax internal rate of return (IRR) of the lignin precipitation process option was estimated to be 95%, while that of the hemicellulose pre-extraction process option was 28%. Sensitivity analysis showed that the after tax-IRR of the lignin precipitation process remains higher than that of the hemicellulose pre-extraction process option, for all changes in the selected sensitivity parameters. If we consider the after-tax IRR, as well as capital cost, as selection criteria, the results show that for the case study mill, the lignin precipitation process is more promising than the near-neutral hemicellulose pre-extraction process. However, the comparison between the two biorefinery options should include long-term evaluation criteria. The potential of high value-added products that could be produced from lignin in the case of the lignin precipitation process, or from ethanol and acetic acid in the case of the hemicellulose pre-extraction process, should also be considered in the selection of the most promising process option.

Renewable Energy on Tribal Lands: A Feasibility Study for a Biomass-to-Energy Plant on the Cocopah Reservation in Arizona

2019 ◽  
Vol 3 (1) ◽  
pp. 1-12
Author(s):  
Lauren K. D’Souza ◽  
William L. Ascher ◽  
Tanja Srebotnjak
Keyword(s):  
Renewable Energy ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
The United States ◽  
Biomass Energy ◽  
Policy Support ◽  
Small Scale ◽  
Energy Plant ◽  
Energy Projects ◽  
Alternative Investment

Native American reservations are among the most economically disadvantaged regions in the United States; lacking access to economic and educational opportunities that are exacerbated by “energy insecurity” due to insufficient connectivity to the electric grid and power outages. Local renewable energy sources such as wind, solar, and biomass offer energy alternatives but their implementation encounters barriers such as lack of financing, infrastructure, and expertise, as well as divergent attitudes among tribal leaders. Biomass, in particular, could be a source of stable base-load power that is abundant and scalable in many rural communities. This case study examines the feasibility of a biomass energy plant on the Cocopah reservation in southwestern Arizona. It considers feedstock availability, cost and energy content, technology options, nameplate capacity, discount and interest rates, construction, operation and maintenance (O&M) costs, and alternative investment options. This study finds that at current electricity prices and based on typical costs for fuel, O&M over 30 years, none of the tested scenarios is presently cost-effective on a net present value (NPV) basis when compared with an alternative investment yielding annual returns of 3% or higher. The technology most likely to be economically viable and suitable for remote, rural contexts—a combustion stoker—resulted in a levelized costs of energy (LCOE) ranging from US$0.056 to 0.147/kWh. The most favorable scenario is a combustion stoker with an estimated NPV of US$4,791,243. The NPV of the corresponding alternative investment is US$7,123,380. However, if the tribes were able to secure a zero-interest loan to finance the plant’s installation cost, the project would be on par with the alternative investment. Even if this were the case, the scenario still relies on some of the most optimistic assumptions for the biomass-to-power plant and excludes abatement costs for air emissions. The study thus concludes that at present small-scale, biomass-to-energy projects require a mix of favorable market and local conditions as well as appropriate policy support to make biomass energy projects a cost-competitive source of stable, alternative energy for remote rural tribal communities that can provide greater tribal sovereignty and economic opportunities.

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