energy efficiency system Articles
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Optimal use of energy systems and processes
In the present paper we focus on two items, Energy, and Environment. We propose to restore and extend the view of CARNOT, relative to thermomechanical systems and processes, starting from thermostatics (equilibrium thermodynamics), through what was first developed as Finite Time Thermodynamics (FTT), since the 1980s (nice radical of Chambadal – Novikov – Curzon – Ahlborn), until now. The CARNOT ...
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Don’t believe VRF manufacturers claims of superior energy efficiency
When it comes to moving BTU’s around a building, Hydronic Systems are the most efficient! VRF manufacturers had been making claims of superior energy efficiency for a number of years without providing any data to back up their claims. In fact, one of the VRF companies likes to say that it’s system is the “most energy efficient system ever developed.” Some VRF advocates ...
By Evapco Inc.
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Maximising Savings with Voltage Optimisation
This article compares different voltage optimisation technologies and illustrates the advantages of the comec inv (induced negative voltage) technology for achieving the best energy saving results in commercial facilities. Saving electricity by regulating and controlling voltage is not a novel idea. The basic principles stem from the fundamental laws of electricity, and the UK market has been ...
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Benefits of exergy and needs for increased education and public understanding and applications in industry and policy - Part II: Needs
Needs related to exergy and its use are described. These needs exist despite the potential benefits of utilising exergy, which are described in Part I of this article, and apply to engineers and scientists as well as industry, the public, the media and government. The needs include applications of exergy to efficiency, economics and the environment and, more broadly, to (a) industrial ...
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Case study - Coater replaces old oxidizers With energy efficient systems
Overview Emission control and the operating costs associated with meeting environmental regulations were nothing new for the Coated Products Division of Brady Corp. The company has been manufacturing coated films for nearly 60 years, demonstrating over that time a commitment to pollution prevention and emission reduction programs. But these considerations were magnified when the Milwaukee ...
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Water: the natural choice - better comfort, lower cost
Hydronic systems deliver safe, more responsive indoor comfort, especially with multiple zones. They provide the most efficient method of dehumidifying in humid climates. Chilled water does the job. There are several ways to move BTUs around a building. Choosing water delivers superior comfort without the use and expense of man-made refrigerants. Water is the greenest, safest way to heat and ...
By Evapco Inc.
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Determinants of residential heating preferences in Slovenia
Slovenian National Energy Efficiency Action Plan (NEEAP, 2008) proposes a set of measures in order to achieve the efficient use of energy, which is seen as an important component of sustainable economic development. As one of the adopted instruments aims at promoting the installation of energy–efficient heating systems, this paper investigates the factors that influence the residential heating ...
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Benefits of exergy and needs for increased education and public understanding and applications in industry and policy - Part I: Benefits
The significant benefits exergy provides to industry, government and society, in areas like energy, environment, economic development and design, are described. It is demonstrated that exergy can help improve understanding of energy issues, partly by providing more useful and meaningful information than energy, and thus help increase the utilisation of beneficial energy resources and ...
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How Do Stratified Thermal Energy Storage Tanks Work?
The world is facing two headaches in regards to energy development: new sources of energy and innovation of affordable and efficient energy storage systems. Energy wastage is a chief concern and the solutions provided by stratified thermal energy storage systems give a massive boost to cost saving measures. At ARANER, we are constantly innovating and looking for the solutions that will help you ...
By Araner
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Energy-sensitive control strategies for decoupled production systems
Rising demand for energy caused by emerging economies, decreasing oil stocks, and the intended nuclear phase-out in some industrial countries has led to new problems concerning sufficient and on time energy supply. Since availability of energy has a dramatic influence on production, energy has to be considered a process prerequisite instead of a production-related overhead topic, as usually ...
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Communicating the Energiewende Worldwide - Case Study
Services for Federal Foreign office and German Embassies The Energiewende is one of Germany’s most important future projects. The Federal Foreign Office and its consulates abroad are observing an increasing demand for information about the background, targets and processes of the energetic transformation of the German energy system. The German missions have been entrusted with the task of ...
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Benchmarking of low 'exergy' buildings
An optimisation of the exergy flows in buildings and the supply structures related to them, similar to other thermodynamic systems, can help in identifying the potential of increased efficiency in energy utilisation. The low exergy (LowEx) approach entails matching the quality levels of exergy supply and demand to streamline the utilisation of high–value energy resources. This approach is the key ...
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Watt Are You Waiting For?
SAN DIEGO – Alltech Solar has been in business since 1995. Owner and President Fred Carmody said he saw an opportunity to help the environment. He also saw a chance to put some people back to work in a touch economy by starting a solar division in the company, and the rest is history. Not only is Carmody dedicated to hiring people affected by the recession, he also helps to support the ...
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Sustainability as a matter of social context: information technologies and the environment
The paper focuses on the potential of Information and Communication Technology (ICT) to improve the sustainability of residential buildings. While ICT can contribute to improving building energy efficiency (e.g., energy management systems) there are also plausible scenarios of an increasing energy demand triggered by ICT use. The main argument of this paper is that harnessing the sustainability ...
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The Return on Investment of an Energy Management System
The building stock is a major consumer of energy and accounts for 40% of total energy consumption in Europe. Approximately half of this consumption occurs during the design and construction phase and has to be controlled by builders, engineers, architects and other actors. The other half occurs during the lifetime of buildings (IDAE), as they require lighting, heating, running water... Once the ...
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Thermodynamic analysis of an integrated gasification combined cycle power plant: effect of nitrogen supply on system performance
A comprehensive thermodynamic analysis of a conceptual integrated coal gasification combined cycle power plant is presented. Energy and exergy efficiencies and exergy destructions of each sub–unit are calculated. The effect of nitrogen, which is supplied from the Air Separation Unit (ASU) of the gasification unit to the combustion chamber of the gas turbine (GT) cycle, on system performance is ...
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School Power Naturally Program - New York State Energy Research and Development Authority - Case Study
Background: When complete, School Power Naturally will represent the largest program of its kind in the country. The project provides funding from NYSERDA of approximately $24,000 for each school and requires the schools to provide an additional cost share of $1500. After a competitive selection process, 50 schools have been selected to receive identical 2 kilowatt solar arrays. Solution: Solar ...
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Zoo-technical application of Ground Source Heat Pumps: a pilot case study
Ground Source Heat Pumps are energy-efficient HVAC systems usually adopted in residential and commercial buildings. However the control of the thermal environment is required not only in spaces occupied by people, but also in intensive breeding farms, in order to maintain healthy conditions and to increase productivity. In the Italian livestock breedings, heating is usually provided by means of ...
By Tethys srl
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Pump energy efficiency field testing and benchmarking in Canada
A large-scale pump performance and efficiency testing program was conducted across the province of Ontario (Canada) involving testing more than 150 water pumps in eight municipal water supply and distribution systems. The program's objectives included raising awareness of the state of pump energy efficiencies and opportunities for energy conservation, as well as the development of a ...
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Development of an energy efficient curtain flame ignition system for sintering of iron ore fines
Research and Development Centre for Iron and Steel (RDCIS) of Steel Authority of India Limited (SAIL) has developed a 'curtain flame' ignition system for sinter mix ignition. Conventionally, either horizontal fired burners or top fired or a combination of both are used for ignition of sinter mix. These burners big in size but few in number are mounted on a rectangular box type furnace. This is ...
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