Performance prediction and design optimisation of an integrated light pipe and artificial lighting system

Artificial lighting systems are used in commercial greenhouses to ensure year-round yields. Current Light Emitting Diode (LED) technologies improved the system efficiency. Nevertheless, having artificial lighting systems extended for hectares with power densities over 50W/m2 causes energy and power demand of greenhouses to be really significant. The present paper introduces an innovative supervisory and predictive control strategy to optimize the energy performance of the artificial lights of greenhouses. The controller has been implemented in a multi-span plastic greenhouse located in North Italy. The proposed control strategy has been tested on a greenhouse of 1 hectare with a lighting system with a nominal power density of 50 Wm−2 requiring an overall power supply of 1 MW for a period of 80 days. The results have been compared with the data coming from another greenhouse of 1 hectare in the same conditions implementing a state-of-the-art strategy for artificial lighting control. Results outlines that potential 19.4% cost savings are achievable. Moreover, the algorithm can be used to transform the greenhouse in a viable source of energy flexibility for grid reliability.

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Lighting energy performance determination in office environments through implementation of EN 15193-1 for Turkey

Lighting Research and Technology ◽

10.1177/1477153520987420 ◽

2021 ◽

pp. 147715352098742

Author(s):

FŞ Yilmaz

Keyword(s):

System Design ◽

Architectural Design ◽

Office Buildings ◽

Energy Requirements ◽

System Control ◽

Lighting System ◽

Artificial Lighting ◽

Design Alternatives ◽

Lighting Energy ◽

The Impact

Office buildings are building typologies where efficient and optimal use of lighting energy is crucial while providing comfortable visual environments. The purpose of this study is to explore the impact of diverse architectural design alternatives on lighting energy requirements and lighting energy saving possibilities through a case study. In this study, a total of 3888 design alternatives are investigated in a comparative way in terms of daylighting system design alternatives, artificial lighting system design scenarios, artificial lighting system control types and shading system control options. Introducing the adaptation process of the EN 15193-1:2017 standard for Turkey’s specific climatic and geographical conditions and considering diverse lighting design scenarios, results of this parametric study aim to underline the significance of architectural design strategies in office buildings for the reduction of lighting energy requirements.

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Optimization of Natural and Artificial Lighting System in UPGRIS Lecturer’s Workspace using Dialux Evo

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/738/1/012033 ◽

2021 ◽

Vol 738 (1) ◽

pp. 012033

Author(s):

Ratri Septina Saraswati ◽

Baju Arie Wibawa ◽

Bambang Eko Saputra

Keyword(s):

Lighting System ◽

Artificial Lighting

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Daylighting Performance of Solar Control Films for Hospital Buildings in a Mediterranean Climate

Energies ◽

10.3390/en12030489 ◽

2019 ◽

Vol 12 (3) ◽

pp. 489

Author(s):

Carmen Calama-González ◽

Ángel León-Rodríguez ◽

Rafael Suárez

Keyword(s):

Mediterranean Climate ◽

Controlled Rolling ◽

Lighting System ◽

Artificial Lighting ◽

Control Film ◽

Solar Control ◽

Hospital Building ◽

Lighting Systems ◽

Cooling Loads ◽

Radiation Cooling

One of the main retrofitting strategies in warm climates is the reduction of the effects of solar radiation. Cooling loads, and in turn, cooling consumption, can be reduced through the implementation of reflective materials such as solar control films. However, these devices may also negatively affect daylight illuminance conditions and the electric consumption of artificial lighting systems. In a hospital building, it is crucial to meet daylighting requirements as well as indoor illuminance levels and visibility from the inside, as these have a significant impact on health outcomes. The aim of this paper is to evaluate the influence on natural illuminance conditions of a solar control film installed on the windows of a public hospital building in a Mediterranean climate. To this end, a hospital room, with and without solar film, was monitored for a whole year. A descriptive statistical analysis was conducted on the use of artificial lighting, illuminance levels and rolling shutter aperture levels, as well as an analysis of natural illuminance and electric consumption of the artificial lighting system. The addition of a solar control film to the external surface of the window, in combination with the user-controlled rolling shutter aperture levels, has reduced the electric consumption of the artificial lighting system by 12.2%. Likewise, the solar control film has increased the percentage of annual hours with natural illuminance levels by 100–300 lux.

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Development of Intelligent Irrigation System, Robot Transporter, and Precision Artificial Lighting System for Moss Mat Production in a Fully Controlled Plant Factory

10.13031/2013.42097 ◽

2012 ◽

Author(s):

Yusuf Hendrawan ◽

Bambang Dwi Argo ◽

Mochamad Bagus Hermanto ◽

Song Zhang ◽

Haruhiko Murase

Keyword(s):

Irrigation System ◽

Lighting System ◽

Artificial Lighting ◽

Plant Factory ◽

Intelligent Irrigation

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The Dividing Area Control of Lighting System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.330.587 ◽

2013 ◽

Vol 330 ◽

pp. 587-591

Author(s):

Qing Wei ◽

Hong Yan Ma

Keyword(s):

Control System ◽

Energy Saving ◽

Lighting Design ◽

Lighting System ◽

Artificial Lighting ◽

Lighting Control ◽

Energy Issues

The lighting system is an integral part of the whole building. Lighting control system is an important part of the lighting system and lighting design. As increasingly severe of the energy issues, energy saving has become one of the problems to be solved in the lighting control system. This paper takes a normally used office as an example. Control the blinds and the lamps in the office reasonably. On the premise of the full use of daylight, make the office achieve the most comfortable illumination by using artificial lighting supplies.

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The Use of the MRM-1 Simulator for Experimental Development of the Future Internal Lighting System in the ISS RS Modules.

MANNED SPACEFLIGHT ◽

10.34131/msf.20.3.41-53 ◽

2020 ◽

pp. 41-53

Author(s):

V.V. Batrakov ◽

A.I Krylov ◽

R.V. Makarov ◽

V.I. Antroshchenko ◽

I.V. Kutina

Keyword(s):

Control Device ◽

Spectral Energy ◽

Time Varying ◽

Lighting System ◽

Experimental Development ◽

Energy Characteristics ◽

Artificial Lighting ◽

Lighting Control ◽

The Future ◽

The Creation

The paper presents the internal lighting system (ILS) for the ISS RS modules and main provisions for the creation and use of a lighting control device with time-varying spectral-energy characteristics. Special attention is paid to the optimization of artificial lighting in manned vehicles and the development of the future ILS for space purposed simulators.

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A Novel Cost-efficient Daylight-based Lighting System For Public Buildings: Design And Implementation

Light & Engineering ◽

10.33383/2020-043 ◽

2020 ◽

pp. 60-70

Author(s):

Murat Ayaz ◽

Ugur Yucel ◽

Koray Erhan ◽

Engin Ozdemir

Keyword(s):

Control System ◽

Operating Cost ◽

Average Energy ◽

Payback Period ◽

Lighting System ◽

Artificial Lighting ◽

Lighting Control ◽

Design And Implementation ◽

Maximum Benefit ◽

Cost Efficient

In this study, design and implementation of a new cost-efficient daylight-based lighting control system is proposed to provide energy saving in a public building with a conventional lighting system. Energy gain recovery and regional daylight utilization coefficients are obtained by conducting daylight measurements in all indoor spaces of the building where the proposed lighting system will be applied. Daylight value is continuously transferred to the control system through the pyranometer placed outside and the need for artificial lighting is calculated by using sectional daylight utilization coefficients. Thereby, maximum benefit from daylight is realized when unnecessary energy consumption for artificial lighting is reduced. Experimental measurement results show that the proposed daylight-based lighting control system provides an average energy efficiency of the building at the level of 60 %. Additionally, the required investment, such as operating cost and payback period for converting an existing conventional lighting system into the proposed system, are discussed in detail. Cost analysis shows that the payback period of the proposed system can be reduced by 5 years compared to the conventional system.

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