scholarly journals An Approach to Energy Saving and Cost of Energy Reduction Using an Improved Efficient Technology

2015 ◽  
Vol 04 (04) ◽  
pp. 61-68 ◽  
Author(s):  
Abubakar Kabir Aliyu ◽  
Abba Lawan Bukar ◽  
Jamilu Garba Ringim ◽  
Abubakar Musa
Keyword(s):  
Energy Saving ◽  
Energy Reduction ◽  
Efficient Technology ◽  
Cost Of Energy

Energy-Oriented Maintenance Decision-Making for Sustainable Manufacturing Based on Energy Saving Window

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Tangbin Xia ◽  
Lifeng Xi ◽  
Shichang Du ◽  
Lei Xiao ◽  
Ershun Pan
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Savings ◽  
Sustainable Manufacturing ◽  
Green Manufacturing ◽  
Energy Reduction ◽  
Efficient Manner ◽  
Line Energy ◽  
Industrial Enterprises ◽  
Attribute Model

In recent years, the industry's responsibility to join in sustainable manufacturing becomes huge, while innovating sustainability has been a new trend. Industrial enterprises are pursuing energy reduction to meet future needs for sustainable globalization and government legislations for green manufacturing. To run a manufacturing line in an energy-efficient manner, an energy-oriented maintenance methodology is developed. At the machine layer, the multi-attribute model (MAM) method is extended by modeling the energy attribute. Preventive maintenance (PM) intervals of each machine are dynamically scheduled according to the machine deterioration, maintenance effects, and environmental conditions. At the system layer, a novel energy saving window (ESW) policy is proposed to reduce energy for the whole line. Energy consumption interactivities, batch production characteristics, and system-layer maintenance opportunities are comprehensively considered. Real-time choice of PM adjustments is scheduled by comparing the energy savings of advanced PM and delayed PM. The results prove the energy reduction achieved by this MAM-ESW methodology. It effectively utilizes standby power, reduces energy consumption, avoids manufacturing breakdown, and decreases scheduling complexity. Furthermore, this energy-oriented maintenance framework can be applied not only in the automotive industry but also for a broader range of manufacturing domains such as the aerospace, semiconductor, and chemical industries.

Research of Cost Estimation of Energy-Saving Buildings Based on the Full Lifecycle Theory

2013 ◽  
Vol 357-360 ◽  
pp. 2454-2459
Author(s):  
Hui Ling Li ◽  
Hang Tian Liu ◽  
Xiao Qin Li
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Cost Estimation ◽  
Life Cycle Cost ◽  
Capital Investment ◽  
Analytical Tool ◽  
Social Benefits ◽  
Full Life Cycle ◽  
Cost Of Energy ◽  
Full Life

This paper first selects the theory of full lifecycle cost as the entry point and analyses the composition of full lifecycle cost of energy-saving buildings. Then it clarifies that the full lifecycle cost estimation of energy-saving buildings is an analytical tool in capital investment and a way to minimize the full lifecycle cost of energy-saving buildings. We also construct the concept and steps of cost estimation and build two mathematical models of full lifecycle cost estimation under two different application conditions; Finally, this paper illustrates the economic and social benefits brought by full life cycle cost estimation of energy-saving buildings through the case studies.

Application of Energy-Saving Building Materials and Economic Comparison

2012 ◽  
Vol 193-194 ◽  
pp. 448-451
Author(s):  
Zhong Min Liu ◽  
Wei Gao ◽  
Jing Ji
Keyword(s):  
Energy Saving ◽  
Building Materials ◽  
Reactive Power ◽  
Construction Project ◽  
Future Directions ◽  
Advantages And Disadvantages ◽  
Cost Of Energy ◽  
Frp Reinforcement ◽  
Engineering Cost ◽  
Economic Comparison

This article introduces several common building materials and new-style energy-saving materials, and their advantages and disadvantages are given. Reactive power concrete and FRP reinforcement will be applied widely in actual engineering. Through specific examples engineering cost of energy-saving materials is introduced, finally gives the building developments and future directions, these can provide reference for application of novel materials in construction project.

scholarly journals Techno-energy-economic sensitivity analysis of hybrid system Solid Oxide Fuel Cell/Gas Turbine

AIMS Energy ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 934-990
Author(s):  
O. Corigliano ◽  
◽  
G. De Lorenzo ◽  
P. Fragiacomo
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Energy Saving ◽  
Gas Turbine ◽  
Primary Energy ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Levelized Cost ◽  
Main System ◽  
Cost Of Energy

<abstract> <p>The paper presents a wide and deep analysis of the techno-energy and economic performance of a Solid Oxide Fuel Cell/Gas Turbine hybrid system fed by gas at different compositions of H<sub>2</sub>, CO, H<sub>2</sub>O, CO<sub>2</sub>, CH<sub>4, </sub> and N<sub>2</sub>. The layout of the system accounts for pressurizing of entering fluids, heat up to the set Solid Oxide Fuel Cell inlet conditions, Solid Oxide Fuel Cell thermo-electrochemical processing, Solid Oxide Fuel Cell—exhaust fluids combustion, turbo-expansion after heat up, and final recovery unit for cogeneration purposes.</p> <p>An ad hoc numerical modeling is developed and then run in a Matlab calculation environment. The influence on the system is evaluated by investigating the change of the fuel composition, and by managing the main operating parameters such as pressure and the fuel utilization factor. The analysis reports on the specific mass flowrates necessary to the purpose required, by assessing the SOFC outlet molar compositions, specific energies (work) at main system elements, specific thermal energies at main system elements, energy and technical performance for Solid Oxide Fuel Cell energy unit; the performance such as electric and thermal efficiency, temperatures at main system elements. A final sensitivity analysis on the performance, Levelized Cost of Energy and Primary Energy Saving, is made for completion. The first simulation campaign is carried out on a variable anodic mixture composed of H<sub>2</sub>, CO, H<sub>2</sub>O, considering the H<sub>2</sub>/CO ratio variable within the range 0.5-14, and H<sub>2</sub>O molar fraction variable in the range 0.1-0.4; used to approach a possible syngas in which they are significantly high compared to other possible compounds. While other simulation campaigns are conducted on real syngases, produced by biomass gasification. The overall Solid Oxide Fuel Cell/Gas Turbine system showed a very promising electric efficiency, ranging from 53 to 63%, a thermal efficiency of about 37%, an LCOE ranging from 0.09 to 0.14 ＄·kWh<sup>-1</sup>, and a Primary Energy Saving in the range of 33-52%, which resulted to be highly affected by the H<sub>2</sub>/CO ratio.</p> <p>Also, real syngases at high H<sub>2</sub>/CO ratio are noticed as the highest quality, revealing electric efficiency higher than 60%. Syngases with methane presence also revealed good performance, according to the fuel processing of methane itself to hydrogen. Low-quality syngases revealed electric efficiencies of about 51%. Levelized Cost of Energy varied from 0.09 (for high-quality gas) to 0.19 (for low-quality gas) ＄·kWh<sup>-1</sup>, while Primary Energy Saving ranged from 44 to 52%.</p> </abstract>

scholarly journals Energy Saving Measures and Simulation in the Library Building of University of Surabaya

2018 ◽  
Vol 3 (1) ◽  
pp. 63
Author(s):  
Elieser Tarigan
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Thermal Performance ◽  
Heating System ◽  
Building Energy ◽  
Payback Period ◽  
Simulation Software ◽  
Efficient Technology ◽  
Radiant Cooling ◽  
Shading Devices

The rapid rate use of fossil fuels globally results in many environmental problems. The adoption of energy efficient technology has the potential to substantially reduce the amount of energy used in buildings. This paper discuses the energy saving measures and simulation for a six-floor library building, University of Surabaya, Indonesia. Simulation was carried out using the Excellence in Design for Greater Efficiency (EDGE) simulation software. The results of simulation showed that 53% of energy efficiency can be reached, without lowering of the building comfort, by applying of four measures at the same time are daylight photoelectric sensors for internal spaces (OFE29), radiant cooling and heating system (OFE16), higher thermal performance glass (OFE8), and external shading devices (OFE4). The implementation of the four measures would result in reduction of 758 ton of CO2/year with a payback period of 2.2 years.Keywords: Energy efficiency, energy building, energy saving, library building, energy simulation Pemanfaatan energy fosil dalam jumlah yang besar secara global menimbulkan permasalahan berkaitan dengan lingkungan. Usaha untuk mengimplementasikan teknologi dalam penghematan energi sangat signifikan dalam penerapannya pada bangunan. Tulisan ini mendiskusikan parameter-parameter penghematan energi serta mensimulasikannya pada sebuah bangunan perpustakaan Universitas Surabaya yang terdiri dari 6 lantai. Simulasi dilakukan menggunakan sofware EDGE. Hasil simulasi menunjukkan bahwa kombinasi 4 parameter penghematan energi dapat memberikan penghematan energi hingga 53%. Parameter tersebut adalah daylight photoelectric sensors for internal spaces (OFE29), radiant cooling and heating system (OFE16), higher thermal performance glass (OFE8), dan external shading devices (OFE4). Implementasi keempat parameter tersebut akan mengurangi emisi karbodiokasida 758 ton per tahun dengan payback period sekitar 2,2 tahun.Kata kunci: Efisiensi energi, energi pada bangunan, hemat energi, bangunan perpustakaan, simulasi energi 

scholarly journals Analysis of coordinated control of Beijing-Tianjin-Hebei smog based on evolutionary game theory

2021 ◽  
Vol 248 ◽  
pp. 02030
Author(s):  
Yuan Qing-min ◽  
Tan Xin
Keyword(s):  
Energy Saving ◽  
Emission Reduction ◽  
Evolutionary Game ◽  
Ecological Compensation ◽  
Cost Of Energy ◽  
Reduction Strategies ◽  
Compensation Standard ◽  
Emission Reduction Strategies ◽  
The Stability ◽  
The Cost

Based on the perspective of ecological compensation and ecological claims, this paper analyzes the stability of Beijing Tianjin Hebei haze governance alliance by using asymmetric evolutionary game model, and obtains the optimal strategy combination. The results show that: a reasonable ecological compensation standard is very important for enterprises to adopt energy-saving and emission reduction strategies. Only when the total value of ecological claims in the two places is higher than the cost of energy-saving and emission reduction, enterprises will adopt energy-saving and emission reduction strategies, and the implementation of energy-saving and emission reduction strategies will not be shaken by the amount of ecological compensation.

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