Page 115 - GRIHA Manual Volume III - Introduction to National Rating System
P. 115
108 GRIHA Manual: Volume 3
Luminaire: A luminaire is a complete lighting unit, consisting of a lamp (or lamps) together with
the parts designed to distribute the light, position and protect the lamps, and connect the lamps to
the power supply.
Monocrystalline silicon: Silicon with a single, continuous crystal lattice structure with virtually no
defect or impurity.
Mounting structure: Metallic structure/frames used for mounting of PV components.
nominal operating cell temperature (noct): Solar cell temperature under the following standard
2
reference environment (SRE) conditions: (a) solar irradiance on the cell surface is 800 W/m , (b)
ambient temperature is 20 °C, and (c) wind speed is 1 m/s.
Polycrystalline silicon: Silicon solidified to form many small crystals. Atoms in polycrystalline
silicon are jumbled together, whereas within a single crystal they are symmetrically arranged.
Sick building syndrome (SBS): This is a situation in which occupants of a building experience
acute health effects that seem to be linked to time spent in a building. Frequently, problems result
when a building is operated or maintained in a manner that is inconsistent with its original design
or prescribed operating procedures. Building occupants complain headache; eye, nose, and throat
irritation; dry cough; dry or itchy skin; dizziness and nausea; difficulty in concentrating; fatigue; and
sensitivity to odour. SBS reduces worker productivity and may also increase absenteeism.
Standard test conditions (Stc): STC are 1000 W/m2 of solar irradiance (intensity), module
temperature of 25° C and solar spectrum as filtered by passing through 1.5 thickness of air mass.
Manufacturers rate the output of PV modules as per their performance under Standard Test
Conditions. STC conditions are 1000 W/m2 of solar irradiance (intensity), module temperature of 25°
C and solar spectrum as filtered by passing through 1.5 thickness of air mass.
uniformity ratio: The ratio of the minimum maintained illuminance level to the average maintained
illuminance level. The uniformity ratio is used as a design check to ensure lighting performance.
Luminaire: A luminaire is a complete lighting unit, consisting of a lamp (or lamps) together with
the parts designed to distribute the light, position and protect the lamps, and connect the lamps to
the power supply.
Monocrystalline silicon: Silicon with a single, continuous crystal lattice structure with virtually no
defect or impurity.
Mounting structure: Metallic structure/frames used for mounting of PV components.
nominal operating cell temperature (noct): Solar cell temperature under the following standard
2
reference environment (SRE) conditions: (a) solar irradiance on the cell surface is 800 W/m , (b)
ambient temperature is 20 °C, and (c) wind speed is 1 m/s.
Polycrystalline silicon: Silicon solidified to form many small crystals. Atoms in polycrystalline
silicon are jumbled together, whereas within a single crystal they are symmetrically arranged.
Sick building syndrome (SBS): This is a situation in which occupants of a building experience
acute health effects that seem to be linked to time spent in a building. Frequently, problems result
when a building is operated or maintained in a manner that is inconsistent with its original design
or prescribed operating procedures. Building occupants complain headache; eye, nose, and throat
irritation; dry cough; dry or itchy skin; dizziness and nausea; difficulty in concentrating; fatigue; and
sensitivity to odour. SBS reduces worker productivity and may also increase absenteeism.
Standard test conditions (Stc): STC are 1000 W/m2 of solar irradiance (intensity), module
temperature of 25° C and solar spectrum as filtered by passing through 1.5 thickness of air mass.
Manufacturers rate the output of PV modules as per their performance under Standard Test
Conditions. STC conditions are 1000 W/m2 of solar irradiance (intensity), module temperature of 25°
C and solar spectrum as filtered by passing through 1.5 thickness of air mass.
uniformity ratio: The ratio of the minimum maintained illuminance level to the average maintained
illuminance level. The uniformity ratio is used as a design check to ensure lighting performance.
