What is solar collector?
What is active solar design?
What is passive solar?
How does passive solar energy work?
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What is solar collector?
Solar collectors are more complex than passive collectors in both design and mechanism. They consist of flat-plate PV panels that are usually mounted and remain stationary, although some are designed to track the sun throughout the course of the day.
What is active solar design?
Active solar systems use external sources of energy to power blowers, pumps and other types of equipment to collect, store and convert solar energy. Once energy from the sun is absorbed, it is stored for later use.
What is passive solar?
A passive solar system does not involve mechanical devices or the use of conventional energy sources beyond that needed to regulate dampers and other controls, if any . Classic examples of basic passive solar structures are greenhouses, sunrooms and solariums -- as the sun's rays pass through the glass windows, the interior absorbs and retains the heat. Modeling this concept in your home can cut heating costs by half compared to heating the same home by traditional means without the use of passive solar (see References 1). In terms of design, success of the passive solar system depends on orientation and the thermal mass of the structure's exterior walls, which means their ability to store and redistribute heat (see References 2).
How does passive solar energy work?
A passive solar system typically relies on south-facing windows as collectors to capture solar energy, although some systems may also use supplemental PV panels. In any case, the goal is to redistribute the energy collected according to a fundamental law of thermodynamics, which states that heat moves from warm to cool areas and surfaces (see References 3). The simplest method of transferring the heat from passive solar collectors is through convection. To illustrate, think of a sunroom with windows on a southern wall. As the sun's rays travel through the glass, the heat is directed into the room. It then rises to areas where the air is cooler, including other rooms beyond and above.
What is active discovery?
Active Discovery is the process by which LogicMonitor determines all of the similar components of a particular type on a given system. The output of an Active Discovery process is one or more instances for which LogicMonitor can collect a particular type of data.
How to configure Active Discovery?
To configure Active Discovery for a DataSource, navigate to Settings | LogicModules | DataSources and open the DataSource. Scroll down to (and expand) the Active Discovery heading to display all available Active Discovery settings. Each is discussed next.
What is auto discovery filter?
Auto Discovery filters can be used to exclude instances for the purpose of applying different datapoint thresholds to different types of instances. For example, consider you have a Cisco switch with uplink ports that are consistently labeled “Uplink” in their switch port descriptions and edge ports that are not labeled. You’re primarily concerned with alerts related to uplink ports, but are still interested in monitoring some aspects of the edge ports.
Why uncheck Active Discovery?
This is because, if the service were to fail, the port would stop responding, Active Discovery would report the instance as no longer present, it would be removed from monitoring, and you would no longer receive alerts for it—at precisely the time you would want to receive alerts for it.
Why is active discovery important?
Active Discovery is extremely valuable for ensuring that monitoring remains up to date with changes in your environment. For example, Active Discovery ensures that each new VM created on your virtualization stack is discovered and monitored, or that each new volume added to your storage system is discovered and monitored. Without Active Discovery, you would have to remember to manually update your monitoring instances every time you make a change to your production environment.
What is a filter in monitoring?
Filters allow you to restrict which instances are added into monitoring via Active Discovery. If one or more filters are in place, instances must match the filter criteria in order to be discovered.
What is solar collector?
Solar collectors are devices that collect the Sun's radiation and use it to generate heat, either for cooking food, heating water, or generating electricity . Solar collectors are not new—they have been used since the 18 th century as solar ovens and since the 19 th century to generate steam and electricity.
How do solar collectors work?
At their grandest scale, solar collectors are used in concentrated solar power (CSP) plants to produce hundreds of megawatts of electricity. They use a large array of mirrors to direct sunlight to a central tower containing solar collectors, thereby generating massive amounts of heat. The heat produces steam to drive a turbine and creates electricity. In a closed-loop, nearly all of the water used to produce the steam is cooled, recaptured, and reused.
How do solar collectors help the environment?
Beyond the direct benefit of reduced emissions, distributed energy resources like local solar collectors can help reduce the total system costs of electricity generation and distribution. Since solar collectors are close to the source of the electricity demand, the transmission cost of bringing the electricity to customers is minimal to none. Homeowners can enjoy energy independence, store their own electricity in order to keep their lights on even during power outages, and reduce the need for utility companies to build new transmission lines to bring power from faraway power plants. 3
How does a solar collector generate electricity?
They generate electricity by directing sunlight toward a Stirling engine. Unlike an internal combustion engine or a thermal power plant like a nuclear or fossil fuel plant, a Stirling engine emits no greenhouse gases and releases no steam, thus loses little water in producing electricity. And with few moving parts and no emissions, they are safe to use in a backyard or on a roof.
Who is David Kuchta?
An environmental activist since the 1970s, he is also a historian, author, gardener, and educator.
What is solar collector?
Solar collectors are more complex than passive collectors in both design and mechanism. They consist of flat-plate PV panels that are usually mounted and remain stationary, although some are designed to track the sun throughout the course of the day.
What is active solar design?
Active solar systems use external sources of energy to power blowers, pumps and other types of equipment to collect, store and convert solar energy. Once energy from the sun is absorbed, it is stored for later use.
What is passive solar?
A passive solar system does not involve mechanical devices or the use of conventional energy sources beyond that needed to regulate dampers and other controls, if any . Classic examples of basic passive solar structures are greenhouses, sunrooms and solariums -- as the sun's rays pass through the glass windows, the interior absorbs and retains the heat. Modeling this concept in your home can cut heating costs by half compared to heating the same home by traditional means without the use of passive solar (see References 1). In terms of design, success of the passive solar system depends on orientation and the thermal mass of the structure's exterior walls, which means their ability to store and redistribute heat (see References 2).
How does passive solar energy work?
A passive solar system typically relies on south-facing windows as collectors to capture solar energy, although some systems may also use supplemental PV panels. In any case, the goal is to redistribute the energy collected according to a fundamental law of thermodynamics, which states that heat moves from warm to cool areas and surfaces (see References 3). The simplest method of transferring the heat from passive solar collectors is through convection. To illustrate, think of a sunroom with windows on a southern wall. As the sun's rays travel through the glass, the heat is directed into the room. It then rises to areas where the air is cooler, including other rooms beyond and above.
