ⓘ Energy - Earths energy budget, Emergy, accidents, broker, customer switching, density, flow, ecology, informatics, management, management software ..

Earth's energy budget

Earths energy budget accounts for the balance between the energy that Earth receives from the Sun, and the energy the Earth radiates back into outer space after having been distributed throughout the five components of Earths climate system and having thus powered Earth’s so-called heat engine. This system is made up of Earths water, ice, atmosphere, rocky crust, and all living things. Quantifying changes in these amounts is required to accurately model the Earths climate. Received radiation is unevenly distributed over the planet, because the Sun heats equatorial regions more than polar r ...

Emergy

Emergy is the amount of energy that was consumed in direct and indirect transformations to make a product or service. Emergy is a measure of quality differences between different forms of energy. Emergy is an expression of all the energy used in the work processes that generate a product or service in units of one type of energy. Emergy is measured in units of emjoule s, a unit referring to the available energy consumed in transformations. Emergy accounts for different forms of energy and resources Each form is generated by transformation processes in nature and each has a different abilit ...

Energy accidents

Energy resources bring with them great social and economic promise, providing financial growth for communities and energy services for local economies. However, the infrastructure which delivers energy services can break down in an energy accident, sometimes causing much damage, and energy fatalities can occur, and with many systems often deaths will happen even when the systems are working as intended. Historically, coal mining has been the most dangerous energy activity and the list of historical coal mining disasters is a long one. Underground mining hazards include suffocation, gas poi ...

Energy broker

Energy brokers assist clients in procuring electric or natural gas from energy wholesalers/suppliers. Since electricity and natural gas are commodities, prices change daily with the market. It is challenging for most businesses without energy managers to obtain price comparisons from a variety of suppliers since prices must be compared on exactly the same day. In addition, the terms of the particular contract offered by the supplier influences the price that is quoted. An energy broker can provide a valuable service if they work with a large number of suppliers and can actually compile the ...

Energy customer switching

Energy customer switching is a concept stemming from the global energy markets. The concept refers to the action of one energy customer switching energy supplier, a switch is essentially seen as the free movement of a customer. In addition to that a switch can include: A re-switch: When a customer switches for the second or subsequent time. A switch-back: When a customer switches back to his/her former or previous supplier. If a customer moves, there is often a switch, however this will only be counted if the customer is not dealing with the incumbent in the new area of residence. The abov ...

Energy density

Energy density is the amount of energy stored in a given system or region of space per unit volume. Colloquially it may also be used for energy per unit mass, though the accurate term for this is specific energy. Often only the useful or extractable energy is measured, which is to say that inaccessible energy is ignored. In cosmological and other general relativistic contexts, however, the energy densities considered are those that correspond to the elements of the stress–energy tensor and therefore do include mass energy as well as energy densities associated with the pressures described ...

Energy flow (ecology)

In ecology, energy flow, also called the calorific flow, refers to the flow of energy through a food chain, and is the focus of study in ecological energetics. In an ecosystem, ecologists seek to quantify the relative importance of different component species and feeding relationships. A general energy flow scenario follows: Secondary consumers, carnivores, then consume the primary consumers, although omnivores also consume primary producers. Energy that had been used by the primary consumers for growth and storage is thus absorbed into the secondary consumers through the process of digest ...

Energy informatics

Energy informatics is a research field covering the use of information and communication technology to address energy utilization and management challenges. Methods used for "smart" implementations often combine IoT sensors with artificial intelligence and machine learning. Energy Informatics is founded on flow networks that are the major suppliers and consumers of energy. Their efficiency can be improved by collecting and analyzing information.

Energy management

Energy management includes planning and operation of energy production and energy consumption units. Objectives are resource conservation, climate protection and cost savings, while the users have permanent access to the energy they need. It is connected closely to environmental management, production management, logistics and other established business functions. The VDI-Guideline 4602 released a definition which includes the economic dimension:" Energy management is the proactive, organized and systematic coordination of procurement, conversion, distribution and use of energy to meet the ...

Energy management software

Energy Management Software is a general term and category referring to a variety of energy-related software applications which may provide utility bill tracking, real-time metering, building HVAC and lighting control systems, building simulation and modeling, carbon and sustainability reporting, IT equipment management, demand response, and/or energy audits. Managing energy can require a system of systems approach. Energy management software often provides tools for reducing energy costs and consumption for buildings or communities. EMS collects energy data and uses it for three main purpo ...

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