نتایج جستجو برای: keywords electricity energy consumption

تعداد نتایج: 2671965  

Journal: :energy equipment and systems 2015
mehdi shirani abbass aghajani saeed shabani jalil jamali

electric motors are the largest consumer of world electric energy, consuming more than twice as much as lighting, the next largest consumer. electric motors account for between 43 and 46% of all global electricity consumption approximately. they give rise to about 6 040 mt of co2 emissions. end‐users approximately spend usd 565 billion per year on electricity [1]. in recent years, increase in e...

Optimization and management of energy in agriculture is one of the main factors to achieve sustainable development. The aim of this research was to evaluate the impact of improving energy use efficiency on CO2 emission reduction in the cucumber-production greenhouses in the central region of Isfahan province. Data were collected on a sample of 81 farmers using two-step clustering and proportion...

2015
Di Zhang Nilay Shah Lazaros G. Papageorgiou

Microgrid works as a local energy provider for domestic buildings to reduce energy expenses and gas emissions by utilising distributed energy resources (DERs). The rapid advances in computing and communication capabilities enable the concept smart buildings become possible. Most energy-consuming household tasks do not need to be performed at specific times but rather within a preferred time. If...

2017
Wai-Ming To Peter Ka Chun Lee

Accurate modeling and forecasting monthly electricity consumption are the keys to optimizing energy management and planning. This paper examines the seasonal characteristics of electricity consumption in Hong Kong—a subtropical city with 7 million people. Using the data from January 1970 to December 2014, two novel nonlinear seasonal models for electricity consumption in the residential and com...

2009
Ian Ayres

By providing feedback to customers on home electricity and natural gas usage with a focus on peer comparisons, utilities can reduce energy consumption at a low cost. We analyze data from two large-scale, random-assignment field experiments conducted by utility companies providing electricity (the Sacramento Municipal Utility District (SMUD)) and electricity and natural gas (Puget Sound Energy (...

2017
Yi-Tui Chen

This article attempts to examine the factors affecting residential electricity consumption through two approaches, a socioeconomic perspective and a direct use perspective. The results of this study find that gross domestic product (GDP), employment rates, residential space, and the implementation of energy labeling schemes provide significant impacts on residential electricity consumption. How...

2004
Les Oxley F. Scrimgeour K. Fatai

This paper considers the causal relationship between employment, energy consumption and economic growth using a range of different approaches. The study finds long-run neutrality in energy consumption, except for electricity and oil consumption where there is evidence of uni-directional linkages from electricity consumption to employment and from oil consumption to employment. We also found tha...

Nowadays, energy consumption management is a vital strategy for societies to optimize energy consumption. Considering the widespread functions of electrical energy in human lives,a high proportion of consumption management procedures deals with the management of electrical energy consumption. It is important to study the state of electrical energy and provide managerial and optimal management s...

2015
Huiru Zhao Yaowen Fan Nana Li Fuqiang Li Yuou Hu

Electricity is a convenient and clean energy which can provide strong support for the development of all walks of life. The power development should maintain coordination with the regional economic development, in which power development may advance sometimes. Hebei province is a typical resource-based area in China, and its power consumption is closely related to economic development, which ma...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
مطهره بخشایش کارشناس ارشد دانشکدة اقتصاد و توسعة کشاورزی، دانشگاه تهران سعید یزدانی استاد دانشکدة اقتصاد و توسعة کشاورزی، دانشگاه تهران

nowadays, factor of energy besides other factors such as labor and capital plays an important role in agricultural production. energy is used as a factor for agricultural machines and instruments. important discussion about this subject is the reaction rate of energy demand to price variations of energy and other factors. so, this study estimates the functions of energy demand in agricultural s...

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