Economic Feasibility Study of DES/CCHP in Different Regions of China

2012 ◽  
Vol 616-618 ◽  
pp. 1374-1376 ◽  
Author(s):  
William Yang
Keyword(s):  
Natural Gas ◽  
Economic Feasibility ◽  
Electricity Price ◽  
Price Ratio ◽  
Comprehensive Index ◽  
Key Factor ◽  
The Cost ◽  
Northwest Region ◽  
Operation Cost ◽  
Determinant Factor

Recently China issued a series of policies that benefit the development of DES/CCHP. We are confident that DES/CCHP fueled by natural gas will boom in recent decades. Operation cost is the key factor that decides if a project will succeed. This paper analyzed three factors that influence the cost of DES/CCHP project: annual running time; comprehensive energy efficiency and the price of natural gas and electricity, reaching the conclusion that the price of natural gas and electricity is the determinant factor to a DES/CCHP project and gas-electricity price ratio is a comprehensive index that indicates the economic expectation of a DES/CCHP project. Considering that no survey has been conducted about the gas and electricity price distributions in China, we collected price data of natural gas and electricity, and got the conclusion that DES/CCHP is more competitive in Northwest region of China, especially Xinjiang, Ningxia.

Gas prices expose Europe’s energy vulnerability

2021 ◽  
Keyword(s):  
Natural Gas ◽  
Central Banks ◽  
Liquefied Natural Gas ◽  
Electricity Price ◽  
Energy Prices ◽  
Content Type ◽  
Indigenous Production ◽  
Europe Today ◽  
The Cost

Significance The cost of gas-fired generation sets the electricity price in much of Europe today. Falling indigenous production has left Europe reliant on gas imports and exposed it to global liquefied natural gas (LNG) prices set by fast-recovering China. This has left retail-only electricity suppliers vulnerable and increases the risk that falling disposable incomes will undermine post-pandemic recovery. Impacts EU carbon allowance prices will stay strong. Higher energy prices will stoke inflation amid a fragile recovery, posing a dilemma for central banks. Rising gas prices have had ancillary but potentially alarming impacts as some fertiliser and CO2 producers have shut in production.

Economic Feasibility of Transporting Natural Gas Hydrates in Slurry Pipelines

2014 ◽  
Author(s):  
K. K. Botros ◽  
S. Hall
Keyword(s):  
Natural Gas ◽  
Gas Hydrates ◽  
Economic Feasibility ◽  
Carrier Fluid ◽  
Central Processing ◽  
Natural Gas Pipeline ◽  
Natural Gas Hydrates ◽  
Unit Energy ◽  
Water Lattice ◽  
The Cost

Natural Gas Hydrates are cage-like structures that are composed of natural gas (methane, ethane, etc.) molecules contained or entrapped within a water lattice. The hydrate structure contains tightly packed gas in ratios of over 160 to 1. Thus, there is a huge conceived upside to transporting the gas in this mode efficiency-wise if one could transport hydrates to a central processing facility where the hydrate would be processed to meet natural gas pipeline grid specifications. The question is: can they be transported in slurry form with water or oil as a carrier fluid, and what are the pros and cons of such mode of transportation. This paper attempts to answer these questions, and presents a feasibility analysis of three pipeline transportation scenarios to transport equivalent of 116 MMSCFD of natural gas over 500 km distance. It was found that for transportation of natural gas in the form of hydrates to be economically feasible, it has to be combined with transportation of crude oil as a carrying fluid rather than water, so that the cost of transportation per unit energy of the combined hydrates/oil slurry mixture is shared between the two energy commodities. This will result in even a lower cost below that of conventional transportation of natural gas in gaseous (vapour) form.

scholarly journals Quality and Economic Evaluation of Peanut Stored in Modular Containers1

1998 ◽  
Vol 25 (2) ◽  
pp. 81-85 ◽  
Author(s):  
F. S. Wright ◽  
C. L. Butts ◽  
M. C. Lamb ◽  
J. S. Cundiff
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Economic Feasibility ◽  
Average Moisture Content ◽  
System Concept ◽  
Arachis Hypogaea L ◽  
The Cost ◽  
On Farm ◽  
Operation Cost ◽  
Field Location

Abstract Handling problems at buying/drying points have significantly increased with the increased harvesting rate of the 4-, 6-, and 8-row combines. Peanuts (Arachis hypogaea L.) can be cured and dried, stored, and moved to the shelling plant when placed in the modular container (box) at the field location. Boxes sized 1.8 m deep x 2.3 m wide x 7.3 m long will hold about 10 Mg of peanuts with two boxes making a semitrailer load. In 1995 and 1996, standard 4.3-m peanut wagons and 4.3-m boxes were used to study a) changes in peanut moisture, b) handling concerns of boxes, and c) the economic feasibility of handling peanuts in boxes. Peanut moisture content decreased from about 10.3 to 6.2% during the two storage periods of 140 and 160 d. Differences in temperature and relative humidity caused the average moisture content to decrease from 9.6 to 7.5% in 70 d during 1995 compared to a drop from 9.5 to 7.5% in 140 d during 1996. Maximum and minimum temperatures in the top 15 cm lagged behind the ambient temperature by 6.4 and 4.3 hr, respectively. Daily average temperatures and relative humidities in the paired boxes and wagons were similar. Relative humidity in the middle of the boxes and wagons did not fluctuate with ambient humidity. Transferring peanuts by an elevator failed to simulate warehouse system handling damage. The economic analysis, after adjusting for reduced shrink loss and handling loss, showed an on-farm operation cost of $19.54/yr/Mg for the box system concept compared to $19.98/yr/Mg for the current wagon-warehouse system. For a buying point operation, the cost was $9.80/yr/Mg for the box system concept compared to $9.93/yr/Mg for the wagon-warehouse system. The two systems are approximately equal in total cost.

scholarly journals Estimation of Iranian Natural Gas Demand Function Using ARDL Estimation Method

2021 ◽  
Vol 04 (06) ◽  
Author(s):  
Afsane Rafiee ◽  
Keyword(s):  
Natural Gas ◽  
Estimation Method ◽  
Electricity Price ◽  
Price Ratio ◽  
Short Term ◽  
Fuel Price ◽  
Accurate Identification ◽  
Short And Long Term ◽  
Natural Gas Demand

Based on its advantages and providing a big part of total energy in the country, natural gas lies in a prominent place among other energy sources. Making cognition and accurate identification of practical elements on the volume of periodic (short and long) demands on natural gas can help us outline suitable plans and policies related to energy. By this view, practical items on natural gas demands had been evaluated. The ARDL pattern with distributed interruptions and ECM model was employed to investigate the function of demands on natural gas during the years from 1976 to 2013. The result proved all coefficients of variables in short and long periods. The natural gas price ratio confirms a contrary relation between natural gas demand and its price in the short term. This ratio in the long-term shows a direct connection between them. Related results to the electricity price ratio show that the electricity price variable has the most positive effect on natural gas demands . Related results show that natural gas's long-term price and income strain are more than short-term ones. Also, results show that natural gas in short periods is a non-strained and necessary commodity. Being non-strained in the short-term results in a lack of efficiency of price policies. So, releasing the price of natural gas can prevent unnecessary consumption of this valuable fuel. Price strain of natural gas in long spans proves that natural gas is a complete strain commodity. This fact is based on why there is some replacement for natural gas, such as electricity and gasoline, for long periods. The minus behind income strain shows that natural gas in the long-term is as low stuff. Intersecting the price of electricity in short and long-term investigations is positive and shows a substitutional relation between electricity and natural gas. The negative intersecting strain of price of kerosene shows that natural gas and kerosene in both the short and long-term are complementary. Also, the gasoline price ratio confirms the complementary relationship in the short-term and substitutional relation in the long-term between natural gas and gasoline.

scholarly journals Feasibility Study of Biogas Production from Miscanthus Biomass in the Tavoush Region

2021 ◽  
pp. 138-143
Author(s):  
D. Z. Markosyan
Keyword(s):  
Sensitivity Analysis ◽  
Natural Gas ◽  
Feasibility Study ◽  
Biogas Production ◽  
Economic Feasibility ◽  
Discount Rates ◽  
Miscanthus Giganteus ◽  
Cheap Alternative ◽  
The Cost

This study aims to assess the economic feasibility of biogas production from the biomass of Miscanthus Giganteus. Three scenarios have been applied based on its productivity and stand’s life. The breakeven prices per tonne for each scenario were calculated and sensitivity analysis was conducted with respect to various factors. Afterward, the cost per gigajoule was calculated and compared to Natural Gas. The cost per gigajoule of Miscanthus ranges from 920-3033 AMD based on the sensitivity results, hence it can be quite cheap alternative depending on the yield, discount rates and rhizome costs.

Economic feasibility of restoration of degraded and neglected lands

2020 ◽  
pp. 79-90
Author(s):  
Anastasiya V. Mironova ◽  
Igor’ V. Liskin ◽  
Irina I. Afonina
Keyword(s):  
Soil Layer ◽  
Black Soil ◽  
Economic Feasibility ◽  
Research Purpose ◽  
Necessary Condition ◽  
Labor Costs ◽  
Human Needs ◽  
Fallow Lands ◽  
The Cost ◽  
Regions Of Russia

Neglect of soils leads to their degradation, worsens useful properties, and reduces fertility and productivity. (Research purpose) The research purpose is in conducting a comparative analysis of technologies for treating degraded soils, taking into account the economic feasibility of their restoration in non-black-soil regions of Russia. (Materials and methods) The article shows the main technological scheme of restoration of degraded soils. Authors have identified the main groups of land that are located in non-black-soil regions of Russia. (Results and discussion) The article presents the need for equipment, economic and labor costs for the restoration of each type of land in the non-black-soil regions of Russia. Authors took into account that the salary of machine operators depends on the time of direct execution of the task. It was found that the restoration of virgin and fallow lands was the most preferable from the economic, energy-saving and environmental points of view. The article shows that the restoration of pasture areas exceeds the cost of processing virgin lands, but the number of necessary machine and tractor units is comparable to work on virgin lands. Authors recommend to develop the soils with woody and shrubby vegetation in the first place, starting with land occupied by young plants. It is necessary to take into account the criteria for the fertility of the soil layer. It was found that soils with a small excess of moisture have small cost of its development, while on heavily swampy soils the cost of work on their development is many times higher than the cost of restoring other types of land. (Conclusion) The article shows that the restoration of neglected land is a necessary condition for improving the provision of human needs for food and a number of industrial goods. First of all, it is necessary to develop land that requires minimal investment of economic and labor costs.

scholarly journals Economic and environmental assessment of bacterial poly(3-hydroxybutyrate) production from the organic fraction of municipal solid waste

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Jon Kepa Izaguirre ◽  
Leire Barañano ◽  
Sonia Castañón ◽  
José A. L. Santos ◽  
M. Teresa Cesário ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Environmental Assessment ◽  
Basal Medium ◽  
Economic Feasibility ◽  
Limiting Factors ◽  
Organic Fraction ◽  
Extraction Solvent ◽  
Experimental Parameters ◽  
The Cost

AbstractThe management of municipal solid waste is a major logistic and environmental problem worldwide. Nonetheless, the organic fraction of municipal solid waste (OFMSW) is a valuable source of nutrients which can be used for a variety of purposes, according to the Circular Economy paradigm. Among the possible applications, the bioproduction of a biodegradable polyester, poly(3-hydroxybutyrate) [P(3HB)], using OFMSW as carbon platform is a promising strategy. Here, an economic and environmental assessment of bacterial P(3HB) production from OFMSW is presented based on previously published results. The SuperPro Designer® software was used to simulate P(3HB) production under our experimental parameters. Two scenarios were proposed depending on the fermentation medium: (1) enzymatic hydrolysate of OFMSW supplemented with glucose and plum waste juice; and (2) basal medium supplemented with glucose and plum waste juice. According to our results, both scenarios are not economically feasible under our experimental parameters. In Scenario 1, the low fermentation yield, the cost of the enzymes, the labour cost and the energy consumption are the factors that most contribute to that result. In Scenario 2, the cost of the extraction solvent and the low fermentation yield are the most limiting factors. The possibility of using process waste as raw material for the generation of other products must be investigated to enhance economic feasibility. From an environmental viewpoint, the photochemical oxidation potential (derived from the use of anisole as extraction solvent) and the generation of acid rain and global warming effect (caused by the burning of fuels for power generation) are the most relevant impacts associated to P(3HB) production under our experimental parameters.

scholarly journals Grid Parity Analysis of China’s Centralized Photovoltaic Generation under Multiple Uncertainties

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1814
Author(s):  
Libo Zhang ◽  
Qian Du ◽  
Dequn Zhou
Keyword(s):  
Power Generation ◽  
Early Stage ◽  
Electricity Price ◽  
Grid Parity ◽  
Industry Environment ◽  
External Conditions ◽  
Generation Costs ◽  
Time Price ◽  
The Cost ◽  
Installed Capacity

The cost of centralized photovoltaic (CPV) power generation has been decreasing rapidly in China. However, the achievement of grid parity is full of uncertainties due to changes in policies and the industry environment. In order to explore the time, price, and external conditions in which grid parity can be achieved, we create the improved grey GM (1, 1) model to estimate the installed capacity over the next 10 years, and apply a learning curve to predict the cost of CPV generation. In the analysis of grid parity, we compare the benchmark price of coal power and the price under the market-oriented mechanism with CPV. The results show that China’s CPV industry will enter the early stage of maturity from 2020 onwards; with the help of benchmark investment, the grid parity of CPV may be achieved in 2022 at the earliest and 2025 at the latest. After 2025, the photovoltaic electricity price will be generally lower than the coal electricity price under marketization. By 2030, CPV power generation costs will reach US $0.05/kWh, the accumulative installed capacity will exceed 370 GW, and the uncertainties will lead to a cumulative installed gap of nearly 100 GW.

scholarly journals Mineral carbonation process of carbon dioxide using animal bone

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110196
Author(s):  
Brendon Mpofu ◽  
Hembe E Mukaya ◽  
Diakanua B Nkazi
Keyword(s):  
Carbon Dioxide ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Economic Feasibility ◽  
Mineral Carbonation ◽  
Agitation Rate ◽  
Carbonation Reaction ◽  
Carbonation Process ◽  
The Cost ◽  
Cow Bone

Carbon dioxide has been identified as one of the greenhouse gases responsible for global warming. Several carbon capture and storage technologies have been developed to mitigate the large quantities of carbon dioxide released into the atmosphere, but these are quite expensive and not easy to implement. Thus, this research analyses the technical and economic feasibility of using calcium leached from cow bone to capture and store carbon dioxide through the mineral carbonation process. The capturing process of carbon dioxide was successful using the proposed technique of leaching calcium from cow shinbone (the tibia) in the presence of HCl by reacting the calcium solution with gaseous carbon dioxide. AAS and XRF analysis were used to determine the concentration of calcium in leached solutions and the composition of calcium in cow bone respectively. The best leaching conditions were found to be 4 mole/L HCl and leaching time of 6 h. Under these conditions, a leaching efficiency of 91% and a calcium conversion of 83% in the carbonation reaction were obtained. Other factors such as carbonation time, agitation rate, and carbonation reaction temperature had little effect on the yield. A preliminary cost analysis showed that the cost to capture 1 ton of CO2 with the proposed technique is about US$ 268.32, which is in the acceptable range of the capturing process. However, the cost of material used and electricity should be reviewed to reduce the preliminary production cost.

scholarly journals Solar Integrated Anaerobic Digester: Energy Savings and Economics

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4292
Author(s):  
Lidia Lombardi ◽  
Barbara Mendecka ◽  
Simone Fabrizi
Keyword(s):  
Anaerobic Digestion ◽  
Natural Gas ◽  
Economic Analysis ◽  
Thermal Energy ◽  
Economic Feasibility ◽  
Solar Thermal ◽  
Base Case ◽  
Economic Sustainability ◽  
Solar Thermal Energy ◽  
Solar Integration

Industrial anaerobic digestion requires low temperature thermal energy to heat the feedstock and maintain temperature conditions inside the reactor. In some cases, the thermal requirements are satisfied by burning part of the produced biogas in devoted boilers. However, part of the biogas can be saved by integrating thermal solar energy into the anaerobic digestion plant. We study the possibility of integrating solar thermal energy in biowaste mesophilic/thermophilic anaerobic digestion, with the aim of reducing the amount of biogas burnt for internal heating and increasing the amount of biogas, further upgraded to biomethane and injected into the natural gas grid. With respect to previously available studies that evaluated the possibility of integrating solar thermal energy in anaerobic digestion, we introduce the topic of economic sustainability by performing a preliminary and simplified economic analysis of the solar system, based only on the additional costs/revenues. The case of Italian economic incentives for biomethane injection into the natural gas grid—that are particularly favourable—is considered as reference case. The amount of saved biogas/biomethane, on an annual basis, is about 4–55% of the heat required by the gas boiler in the base case, without solar integration, depending on the different considered variables (mesophilic/thermophilic, solar field area, storage time, latitude, type of collector). Results of the economic analysis show that the economic sustainability can be reached only for some of the analysed conditions, using the less expensive collector, even if its efficiency allows lower biomethane savings. Future reduction of solar collector costs might improve the economic feasibility. However, when the payback time is calculated, excluding the Italian incentives and considering selling the biomethane at the natural gas price, its value is always higher than 10 years. Therefore, incentives mechanism is of great importance to support the economic sustainability of solar integration in biowaste anaerobic digestion producing biomethane.

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