Feature Type
A device that converts power (using an electric motor, diesel or gasoline engine, etc.) into potential energy stored in pressurized air (i.e., compressed air).
energy:AbstractEnergyConversionSystem
               Attribute type: core:creationDate | 
            
Date the city object was generated.
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Date
               Attribute type: core:terminationDate | 
            
????
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Date
               Attribute type: core:externalReference | 
            
Reference to a corresponding object in another information system, for example in the German cadastre (ALKIS), the German
         topographic information system (ATKIS), or the OS MasterMap®.
      
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ExternalReference (DataType)
               Attribute type: core:relativeToTerrain | 
            
Location of the city object relative to the surrounding terrain.
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RelativeToTerrain (Enumeration)
| 
                Code  | 
            
                Text  | 
         |
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                entirelyAboveTerrain  | 
            
                entirelyAboveTerrain  | 
            
               Object is located entirely above terrain.
             | 
         
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                substantiallyAboveTerrain  | 
            
                substantiallyAboveTerrain  | 
            
               Most, but not all parts of the object are located above terrain.
             | 
         
| 
                substantiallyAboveAndBelowTerrain  | 
            
                substantiallyAboveAndBelowTerrain  | 
            
               Parts of the object are located above terrain, and other parts below terrain.
             | 
         
| 
                substantiallyBelowTerrain  | 
            
                substantiallyBelowTerrain  | 
            
               Most, but not all parts of the object are located below terrain.
             | 
         
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                entirelyBelowTerrain  | 
            
                entirelyBelowTerrain  | 
            
               All parts of the object are located below terrain.
             | 
         
               Attribute type: core:relativeToWater | 
            
Location of the city object relative to the surrounding water surface.
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RelativeToWater (Enumeration)
| 
                Code  | 
            
                Text  | 
         |
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                entirelyAboveWaterSurface  | 
            
                entirelyAboveWaterSurface  | 
            
               Object is located entirely above water surface..
             | 
         
| 
                substantiallyAboveWaterSurface  | 
            
                substantiallyAboveWaterSurface  | 
            
               Most, but not all parts of the object are located above water surface.
             | 
         
| 
                substantiallyAboveAndBelowWaterSurface  | 
            
                substantiallyAboveAndBelowWaterSurface  | 
            
               Parts of the object are located above water surface, and other parts below water surface.
             | 
         
| 
                substantiallyBelowWaterSurface  | 
            
                substantiallyBelowWaterSurface  | 
            
               Most, but not all parts of the object are located below water surface.
             | 
         
| 
                entirelyBelowWaterSurface  | 
            
                entirelyBelowWaterSurface  | 
            
               All parts of the object are located below water surface.
             | 
         
| 
                temporarilyAboveAndBelowWaterSurface  | 
            
                temporarilyAboveAndBelowWaterSurface  | 
            
               The height of the water surface is varying and the object temporily is located above or below water level.
             | 
         
               Attribute type: core:appearance | 
            
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AbstractAppearance
               Attribute type: core:genericAttribute | 
            
Additional property of the city object
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AbstractGenericAttribute (DataType)
               Attribute type: energy:numberOfDevices | 
            
Indicates the total number of devices used.
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Integer (Type)
               Attribute type: energy:model | 
            
Indicates the type of model.
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CharacterString (Type)
               Attribute type: energy:serviceLife | 
            
Relation to a data structure describing the service life for lifecycle analysis.
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ServiceLife
               Attribute type: energy:yearOfManufacure | 
            
Manufacturing year of the energy system.
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Year
               Attribute type: energy:installedIn | 
            
Relation to the city object in which the energy system is installed.
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_CityObject
               Attribute type: energy:efficiencyIndicator | 
            
Reference efficiency ratio used to quantify the system efficiency (e.g. COP, EER, W/(m3/h)).
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CharacterString
               Attribute type: energy:installedPower | 
            
Total nominal power of the energy conversion system.
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Measure (Type)
               Attribute type: energy:nominalEfficiency | 
            
Nominal ratio of energy output to input, according to manufacturer.
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Measure
               Attribute type: energy:has | 
            
Relation to SystemOperation class, specifying operational details of the energy conversion system.
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SystemOperation
               Attribute type: energy:provides | 
            
Amount of energy being provided via a specific energy carrier.
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EnergyFlow
               Attribute type: energy:compressorType | 
            
Indicates the type of air compressor (e.g. reciprocating. rotary screw, rotary vane, centrifugal aircompressor).
1
CompressorTypeValue (Enumeration)
| 
                Code  | 
            
                Text  | 
         |
| 
                reciprocatingCompressorHermetic  | 
            
                reciprocatingCompressorHermetic  | 
            
               A one-piece welded steel casing that cannot be opened for repair; if the hermetic fails it is simply replaced with an entire new unit. | 
         
| 
                reciprocatingCompressorSemiHermetic  | 
            
                reciprocatingCompressorSemiHermetic  | 
            
               A semi-hermetic uses a large cast metal shell with gasketed covers that can be opened to replace motor and pump components. | 
         
| 
                reciprocatingCompressorOpen  | 
            
                reciprocatingCompressorOpen  | 
            
               Open compressors rely on shaft seals to retain the internal pressure, and these seals require a lubricant such as oil to retain their sealing properties. | 
         
| 
                rotaryVaneCompressor  | 
            
                rotaryVaneCompressor  | 
            
               Rotary vane compressors consist of a rotor with a number of blades inserted in radial slots in the rotor. The rotor is mounted offset in a larger housing that is either circular or a more complex shape. | 
         
| 
                scrollCompressor  | 
            
                scrollCompressor  | 
            |
| 
                screwCompressor  | 
            
                screwCompressor  | 
            
               Rotary screw compressors use two meshed rotating positive-displacement helical screws to force the gas into a smaller space. | 
         
| 
                centrifugalCompressor  | 
            
                centrifugalCompressor  | 
            
               Centrifugal compressors use a rotating disk or impeller in a shaped housing to force the gas to the rim of the impeller, increasing the velocity of the gas. | 
         
               Attribute type: energy:pressure | 
            
Pressure of the compressed air. Pressure is expressed in bar or PSI (pounds per square inch).
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Measure (Type)