Comparison of capacity design modes and operation strategies and calculation of thermodynamic boundaries of energy-saving for CCHP systems in different energy supply scenarios

2019 ◽  
Vol 188 ◽  
pp. 296-309 ◽  
Author(s):  
Lejun Feng ◽  
Xiaoye Dai ◽  
Junrong Mo ◽  
Lin Shi
Keyword(s):  
Energy Saving ◽  
Energy Supply ◽  
Capacity Design

Multiobjective Robust Optimal Design of a Gas Turbine Cogeneration Plant Under Uncertain Energy Demands

2001 ◽  
Author(s):  
Ryohei Yokoyama ◽  
Koichi Ito
Keyword(s):  
Optimal Design ◽  
Energy Saving ◽  
Gas Turbine ◽  
Energy Supply ◽  
Design Method ◽  
Primary Energy ◽  
Weighted Sum ◽  
Cogeneration Plant ◽  
Energy Demands ◽  
Robust Optimal Design

A multiobjective robust optimal design method based on the minimax regret criterion is proposed for sizing equipment of energy supply plants so that they are robust in economic and energy saving characteristics under uncertain energy demands. Equipment capacities and utility contract demands as well as energy flow rates are determined to minimize a weighted sum of the maximum regrets in the annual total cost and primary energy consumption, and satisfy all the possible energy demands. This optimization problem is formulated as a kind of multilevel linear programming one, and its solution is derived by repeatedly evaluating lower and upper bounds for the optimal value of the weighted sum of the maximum regrets. Through a case study on a gas turbine cogeneration plant for district energy supply, the trade-off relationship between the robustness in economic and energy saving characteristics is clarified.

Application of a New Energy Supply Scheme in Remote Areas and Research for Energy-Saving Technology

2011 ◽  
Vol 219-220 ◽  
pp. 1482-1485
Author(s):  
Xiao Xiong Li ◽  
Shuang Guo Niu
Keyword(s):  
Energy Saving ◽  
Power Supply ◽  
Energy Supply ◽  
Yellow River ◽  
Remote Areas ◽  
New Energy ◽  
New Type ◽  
Energy Saving Technology

To solve no electricity in remote areas, a new type of power supply scheme is designed and a multi-function power cabinet and a energy-saving lighting are manufactured. Moreover they are applied in wang-an management office in Yellow river, This can not only supply enough power for it,but also save invest and energy, so it is very significant today.

Energy-Saving Evaluation of SOFC Cogeneration Systems With Solar Cell and Battery

2014 ◽  
Vol 11 (6) ◽  
Author(s):  
Akira Yoshida ◽  
Koichi Ito ◽  
Yoshiharu Amano
Keyword(s):  
Solar Cell ◽  
Energy Saving ◽  
Energy Supply ◽  
Energy Savings ◽  
Optimization Theory ◽  
Maximum Energy ◽  
Planning Problem ◽  
Energy Supply System ◽  
Energy Demands ◽  
Cogeneration System

The purpose of this study is to evaluate the maximum energy-saving potential of residential energy supply systems consisting of a solid oxide fuel cell (SOFC) cogeneration system (CGS) combined with a solar cell (SC) and a battery (BT), compared with a reference system (RS). This study applies an optimization theory into an operational planning problem to measure actual energy demands over the course of 1 year. Eight different types of energy supply system were compared with each other by changing the components of the SOFC-CGS, SC, BT, and RS. Meaningful numerical results are obtained, indicating the maximum potential energy savings.

Improvement of Hydraulic System of New Energy Saving Die Casting Machine

2012 ◽  
Vol 591-593 ◽  
pp. 428-431
Author(s):  
Xu Xia Zhu ◽  
Wei Min Zhao ◽  
Jia Feng Xu
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Saving ◽  
Hydraulic System ◽  
Energy Supply ◽  
Die Casting ◽  
Casting Machine ◽  
New Methods ◽  
New Energy

Due to the growing tension of non-renewable energy supply, in order to enhance sustainable development and competitiveness of the die-casting equipment, developing new energy-saving die casting machine is imperative. In this paper the hydraulic system of die casting machine was studied, mainly about how to adjust and improve its oil supply and oil return system, servo technology and pneumatics were applied, the result shows that the new methods can effectively reduce the overall energy consumption, and improve the efficiency of the system.

Research on Energy-Saving Awareness, Energy-Saving Policies and Sustainable Development in China

2011 ◽  
Vol 361-363 ◽  
pp. 1018-1021 ◽  
Author(s):  
Fan Yang
Keyword(s):  
Sustainable Development ◽  
Energy Saving ◽  
Energy Supply ◽  
Public Awareness ◽  
Energy Resource ◽  
Indicator System ◽  
Regression Method ◽  
Linear Regression Method ◽  
Energy Subsidies ◽  
Multiple Linear Regression Method

Increasing public awareness of energy-saving by energy policy is an important way of achieving sustainable development. This paper establishes indicator system to measure the energy-saving awareness of Chinese residents, uses the multiple linear regression method to analyze which energy-saving policy would affect the energy-saving awareness most significantly and finally gets the conclusion that the policies of making laws, conducting propaganda and improving the residents’ education level has a significant impact on raising the awareness of energy-saving, and the policies of increasing price of energy resource, offering energy subsidies, and restricting energy supply can hardly raise people’s awareness of energy-saving.

THE SOLAR GREENHOUSE: STATE OF THE ART IN ENERGY SAVING AND SUSTAINABLE ENERGY SUPPLY

2005 ◽  
pp. 501-508 ◽  
Author(s):  
G. Bot ◽  
N. van de Braak ◽  
H. Challa ◽  
S. Hemming ◽  
TH. Rieswijk ◽  
...  
Keyword(s):  
Energy Saving ◽  
Energy Supply ◽  
State Of The Art ◽  
Sustainable Energy ◽  
Solar Greenhouse ◽  
Sustainable Energy Supply

scholarly journals Energy efficiency in Hungary and abroad

2015 ◽  
pp. 147-150
Author(s):  
Imre Török
Keyword(s):  
Energy Efficiency ◽  
Solar Energy ◽  
Energy Saving ◽  
Energy Security ◽  
Geothermal Energy ◽  
Energy Supply ◽  
Waste Recovery ◽  
Energy Mix ◽  
The Future ◽  
Decentralized Energy

Nowadays decentralized energy supply and the energy security are becoming more involved. We should increase the share of renewable in the energy mix, addition to improve the energy efficiency. Hungary is not an abundance of fossil resources it is particularly important in the materials and energy-saving technologies, waste recovery, increasing the share of environmental energy. Our country has outstanding opportunities many areas for example, solar energy, geothermal energy, so we need to devote more attention to renewables in the future.

scholarly journals Practical Application of Environmental Protection and Energy Saving in Building Electrical Design

2017 ◽  
Vol 1 (3) ◽  
Author(s):  
Zhao Jianlu
Keyword(s):  
Energy Saving ◽  
Environmental Protection ◽  
National Economy ◽  
Energy Supply ◽  
Social Economy ◽  
Building Industry ◽  
Practical Application ◽  
Continuous Development

Energy is the lifeline of a country's economic development, but also the important foundation to improve people’s lives. With the continuous development of China's social economy, as a big energy-consuming industry, the building industry has been consuming more and more energy, greatly increasing the pressure of the energy supply for our country, and even restricting the development of our national economy, so the practical application of environmental protection and energy saving in building electrical design is of great significance to the economic development of our country. This paper analyzes and discusses the practical application of environmental protection and energy saving in building electrical design.

scholarly journals Penghematan Listrik Rumah Tangga dalam Menunjang Kestabilan Energi Nasional dan Kelestarian Lingkungan

2019 ◽  
Vol 20 (2) ◽  
pp. 263
Author(s):  
Arif Dwi Santoso ◽  
Muhammad Agus Salim
Keyword(s):  
Energy Saving ◽  
Energy Supply ◽  
Energy Savings ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
Research Data ◽  
Electricity Supply ◽  
Air Conditioners ◽  
Great Saving ◽  
Electrical Devices

ABSTRACTThe government efforts to maintain national energy stability program through the increase energy supply and saving must be supported by all levels of society. Several energy observers and experts stated that the contribution of the domestic or household sector in the activities of energy saving program is quite significant because the percentage of household customers are relatively high. This paper analyzes the potential of providing research data on the percentage of electricity savings in the domestic or household sectors towards saving electricity nationally. The results of the study show that electrical devices commonly used in households still have the potential to be saved. Electrical devices that are often used at households and have great saving potentials are air conditioners and refrigerators. If each household customer saves 30% of electricity consumption, then the national electricity supply that can be saved will be around 5,679 GW, equivalent to 83.3 trillion rupiah. The saving program resulted in savings of electricity consumption of around 6% of all household consumers or around 2.9% of total national electricity consumption.Keywords: electrical energy, savings, households ABSTRAKUpaya pemerintah dalam menjaga kestabilan energi nasional melalui program peningkatan pasokan dan penghematan energi harus didukung oleh seluruh lapisan masyarakat. Para pengamat dan pakar energi menyatakan bahwa kontribusi sektor domestik atau rumah tangga dalam program penghematan konsumsi energi listrik cukup signifikan karena persentase jumlah pelanggan rumah tangga yang relatif tinggi. Penelitian ini menganalisis tentang potensi persentase penghematan energi listrik sektor domestik atau rumah tangga terhadap  penghematan listrik secara nasional. Hasil penelitian menunjukkan bahwa piranti listrik yang biasa digunakan pada rumah tangga masih memiliki potensi untuk dilakukan penghematan. Piranti listrik yang sering digunakan pada rumah tangga dan memiliki potensi penghematan yang besar adalah alat pendingin ruangan (AC) dan kulkas. Bila setiap pelanggan rumah tangga melakukan penghematan konsumsi energi listriknya sebesar 30%, maka pasokan listrik nasional yang dapat dihemat adalah sekitar 5.679 GW atau setara dengan 83,3 Trilyun rupiah. Upaya ini menghasilkan penghematan konsumsi listrik sekitar 6% dari seluruh konsumen rumah tangga atau sekitar 2,9 % dari total konsumsi energi listrik nasional.Kata kunci: energi listrik, penghematan, rumah tangga

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