نتایج جستجو برای: primary energy saving

تعداد نتایج: 1309684  

2012
Chethana R Murthy

The growing awareness towards energy efficient cellular networks has paved way for new technologies in designing green cellular networks. According to technical analysts, the base stations are the most energy intensive part of a typical cellular network. Saving power in base stations is therefore the primary focus in green cellular networks. The main goal of designing green base stations is for...

Journal: :علوم و فنون کشت های گلخانه ای 0
داود مؤمنی d. momeni agricultural engineering research institute (aeri), karaj, iran.موسسه تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج احمد بناکار a. banakar dept. biosyst. eng. tarbiat modares univ., tehran, iran.گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران برات قبادیان b. ghobadian dept. biosyst. eng. tarbiat modares univ., tehran, iran.گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران سعید مینایی s. minaei dept. biosyst. eng. tarbiat modares univ., tehran, iran.گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران

energy consumption is very high in greenhouses mainly due to off-season production. the main source of its energy supply is fossil fuels. due to the disadvantages of fossil fuels consumption and preventive laws in the incoming years, study on reducing consumption and replacing a part of them with renewable energy is essential. in this research, a solar heating system, equipped with a concentrat...

Journal: :international journal of energy and environmental engineering 2011
satoru okamoto

this paper describes a study that starts with an analysis of typical energy demand profiles in a hospital setting followed by a case study of a combined cooling, heating, and power (cchp) generation system.cchp is an autonomous system that combines the generation of electrical, heating, and cooling energy.the driving units are two high-efficiency gas engines that produce electrical and heat ene...

The present study investigates the effectiveness of thermostat control strategy in cooling energy consumption in residential buildings. To evaluate the energy consumption, two scenarios including a residential zone with and without the thermostat control system are assumed. The TRNSYS software provides an efficient numerical tool to model and evaluate a cooling system. Furthermore, since solar-...

2014
Yefeng Liu Eckhard A. Groll Orkan Kurtulus Kazuaki Yazawa Yefeng LIU

In dairy processes, there are significant simultaneous heating and cooling demands. A novel type of transcritical CO2 heat pump system is proposed, and its features and benefits are introduced. Based on the technical characteristics, primary energy-savings, and operating cost aspects, the CO2 heat pump system is simulated and compared to current heating and cooling systems used in dairy plants....

Journal: :The Journal of the Institute of Image Information and Television Engineers 1999

Journal: :international journal of energy and environmental engineering 2011
carlos rubio-maya javier uche j jesús pacheco-ibarra

a preliminary design of a polygeneration system (combined cooling-heating-power plant with a desalination unit), is proposed for a tourist resort located on the spanish coast. the well-known trigenerationconcept is enhanced to the included production of desalted water, considering for the purpose three different options: reverse osmosis (rodp), multi-effect (medp) and a combination of rodp and ...

Journal: :international journal of environmental research 2010
l. xing l. shi a. hussain

as the main actor of implementing energy saving and pollution abatement, corporations and their response to the policy are studied in this paper. we find that corporate properties as scale, ownership, current environmental performance on energy using and pollution, target market and listed situation have impact on the corporate responding conduct and progress. especially, current environmental ...

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