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Enhancement of ground radiation in greenhouses by reflection of direct sunlight

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2002
Authors
Pucar, Mila
Article (Published version)
Metadata
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Abstract
Substantial gains in greenhouse ground illumination/irradiance were obtained with a reflecting wall that was positioned so as to reflect the incoming sunlight from the northern face of the greenhouse to its ground. The effect was particularly significant in winter when the sun was low throughout the day and most of the radiation passed through the greenhouse so that its ground radiant power was reduced. Four types of greenhouse with reflecting walls exhibiting increasing efficiencies of insolation were developed. A theory describing a several-fold enhancement of ground irradiance and radiant energy was developed. Effects of sky (diffuse) radiation on clear and cloudy days were also considered. An experimental model, as well as a full-scale greenhouse with a reflecting wall with provision for measuring ground illumination was constructed and exposed to the sun: Actual measurements were conducted over several days, supporting the theoretical calculations.
Keywords:
Enhancement of ground insolation / Greenhouse energy efficiency / Reflection of solar radiation
Source:
Renewable Energy, 2002, 26, 4, 561-586

DOI: 10.1016/S0960-1481(01)00155-0

ISSN: 0960-1481

WoS: 000174658300005

Scopus: 2-s2.0-0036680960
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15
14
URI
https://raumplan.iaus.ac.rs/handle/123456789/42
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  • Radovi istraživača / Researchers' publications
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RAUmPlan
TY  - JOUR
AU  - Pucar, Mila
PY  - 2002
UR  - https://raumplan.iaus.ac.rs/handle/123456789/42
AB  - Substantial gains in greenhouse ground illumination/irradiance were obtained with a reflecting wall that was positioned so as to reflect the incoming sunlight from the northern face of the greenhouse to its ground. The effect was particularly significant in winter when the sun was low throughout the day and most of the radiation passed through the greenhouse so that its ground radiant power was reduced. Four types of greenhouse with reflecting walls exhibiting increasing efficiencies of insolation were developed. A theory describing a several-fold enhancement of ground irradiance and radiant energy was developed. Effects of sky (diffuse) radiation on clear and cloudy days were also considered. An experimental model, as well as a full-scale greenhouse with a reflecting wall with provision for measuring ground illumination was constructed and exposed to the sun: Actual measurements were conducted over several days, supporting the theoretical calculations.
T2  - Renewable Energy
T1  - Enhancement of ground radiation in greenhouses by reflection of direct sunlight
VL  - 26
IS  - 4
SP  - 561
EP  - 586
DO  - 10.1016/S0960-1481(01)00155-0
UR  - Konv_376
ER  - 
@article{
author = "Pucar, Mila",
year = "2002",
abstract = "Substantial gains in greenhouse ground illumination/irradiance were obtained with a reflecting wall that was positioned so as to reflect the incoming sunlight from the northern face of the greenhouse to its ground. The effect was particularly significant in winter when the sun was low throughout the day and most of the radiation passed through the greenhouse so that its ground radiant power was reduced. Four types of greenhouse with reflecting walls exhibiting increasing efficiencies of insolation were developed. A theory describing a several-fold enhancement of ground irradiance and radiant energy was developed. Effects of sky (diffuse) radiation on clear and cloudy days were also considered. An experimental model, as well as a full-scale greenhouse with a reflecting wall with provision for measuring ground illumination was constructed and exposed to the sun: Actual measurements were conducted over several days, supporting the theoretical calculations.",
journal = "Renewable Energy",
title = "Enhancement of ground radiation in greenhouses by reflection of direct sunlight",
volume = "26",
number = "4",
pages = "561-586",
doi = "10.1016/S0960-1481(01)00155-0",
url = "Konv_376"
}
Pucar, M.. (2002). Enhancement of ground radiation in greenhouses by reflection of direct sunlight. in Renewable Energy, 26(4), 561-586.
https://doi.org/10.1016/S0960-1481(01)00155-0
Konv_376
Pucar M. Enhancement of ground radiation in greenhouses by reflection of direct sunlight. in Renewable Energy. 2002;26(4):561-586.
doi:10.1016/S0960-1481(01)00155-0
Konv_376 .
Pucar, Mila, "Enhancement of ground radiation in greenhouses by reflection of direct sunlight" in Renewable Energy, 26, no. 4 (2002):561-586,
https://doi.org/10.1016/S0960-1481(01)00155-0 .,
Konv_376 .

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