﻿Files in this folder are part of the dataset entitled Data from: ‘GreenLight - An open source model for greenhouses with supplemental lighting: Evaluation of heat requirements under LED and HPS lamps (2020)’, see the readme file of that dataset for more information.

data608.mat is equivalent to the file "Processed data\dataLED.mat" in the above dataset
data609.mat is equivalent to the file "Processed data\dataHPS.mat" in the above dataset

For completeness, a summary of the readme of the above dataset is added below.

METDATA
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Title of the dataset: 
Data from: ‘GreenLight - An open source model for greenhouses with supplemental lighting: Evaluation of heat requirements under LED and HPS lamps (2020)’

Creators: 
David Katzin, Greenhouse Horticulture and Flower Bulbs, Wageningen University and Research, Wageningen, The Netherlands. david.katzin@wur.nl
ORCID: 0000-0001-9571-8231

Frank Kempkes, Greenhouse Horticulture and Flower Bulbs, Wageningen University and Research, Wageningen, The Netherlands
ORCID: 0000-0002-6052-1903

Simon van Mourik, Farm Technology Group, Department of Plant Sciences, Wageningen University, Wageningen, The Netherlands. 
ORCID: 0000-0001-7965-9227

Eldert J. van Henten, arm Technology Group, Department of Plant Sciences, Wageningen University, Wageningen, The Netherlands. 
ORCID: 0000-0002-1623-9855

Anja Dieleman, Greenhouse Horticulture and Flower Bulbs, Wageningen University and Research, Wageningen, The Netherlands
ORCID: https://orcid.org/0000-0002-6211-7090

Leo F.M. Marcelis, Horticulture and Product Physiology Group, Department of Plant Sciences, Wageningen University, Wageningen, The Netherlands
ORCID: 0000-0002-8088-7232

Related publications: 
D Katzin, S van Mourik, F Kempkes, EJ van Henten. GreenLight: An open source model for greenhouses with supplemental lighting: Evaluation of heat requirements under LED and HPS lamps. 2020. Biosystems Engineering 194, pp. 61-81. https://doi.org/10.1016/j.biosystemseng.2020.03.010

D Katzin. Energy saving by LED lighting in greenhouses: A process-based modelling approach. 2021. PhD thesis, Wageningen University. https://doi.org/10.18174/544434

T Dueck, J Janse, A Schpendonk, F Kempkes, B Eveleens, K Scheffers, S Pot, G Trouwborst, E Nederhoff, L Marcelis. Lichtbenuttig van tomaat onder LED en SON-T belichting. November 2010. Rappport GTB-1040. Wageningen UR Glastuinbouw, Wageningen, The Netherlands. https://research.wur.nl/en/publications/lichtbenutting-van-tomaat-onder-led-en-son-t-belichting-2, https://edepot.wur.nl/160925

TA Dueck, J Janse, BA Eveleens, FLK Kempkes, LFM Marcelis. Growth of tomatoes under hybrid LED and HPS lighting. 2012. Acta Horticulturae, 1(952), 335–342. https://doi.org/10.17660/ActaHortic.2012.952.42

Short description of the research:
This dataset includes measurements collected during a greenhouse trial in 2009-2010 in Bleiswijk, The Netherlands, and results of simulations aimed at reproducing the greenhouse as a mathematical model.

The greenhouse trial was conducted between October 2009 and June 2010 by WUR Greenhouse Horticulture and Flower Bulbs in Bleiswijk, the Netherlands. The experiment compared the growth of cocktail tomatoes (variety Sunstream) in greenhouse compartments with 4 different installations of artificial lighting: (1) full LED toplights, (2) full HPS (high-pressure sodium) toplights, (3) hybrid HPS toplights and LED interlights (lamps between the crop rows), (4) hybrid LED toplights and LED interlights. In all installation, lamps provided in total 170 µmol/m2/s PAR light. In the hybrid installations 50% of the artificial light came from the toplights and 50% from the interlights. This dataset includes only the data used in Katzin et al (2020): outdoor weather, indoor climate, and greenhouse climate control actions, for installations (1) and (2) only (full LED toplights and full HPS toplights), between 19 October 2009 at 15:15 and 8 February 2010 at 15:15.

Model simulations were performed by GreenLight, an open-source greenhouse simulation model. Four simulations were performed: (1) A simulation of the indoor climate with HPS lamps; (2) A simulation of the indoor climate with LED lamps; (3) A simulation of the energy use with HPS lamps ; (4) A simulation of the energy use with LED lamps .

Keywords: 
Greenhouse; Lighting; Control; LED; HPS; Greenhouse lighting; Greenhouse climate; Greenhouse control; Tomato

License: CC BY-SA

DESCRIPTION OF THE DATA
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- data608.mat: processed data from the LED compartment in the trial mentioned above
- data609.mat: processed data from the HPS compartment in the trial mentioned above

The data is organized in the following way:
		 Column    Description                         Unit             
		  1 		Time 								MATLAB datenum (days since 0/0/0000)
		  2 		Outdoor global radiation 			W m^{-2}
		  3 		Outdoor air temperature 			°C
		  4 		Outdoor relative humidity  			%		
		  5 		Outdoor wind speed 					m s^{-1}
		  6 		Indoor temperature 					°C
		  7 		Indoor vapor pressure deficit  		g m^{-3}
		  8 		Energy screen closure 				0-100 (100 is fully closed)
		  9 		Black out screen closure			0-100 (100 is fully closed)
		  10 		Lee side ventilation aperture		0-100 (100 is fully open)
		  11 		Wind side ventilation aperture 		0-100 (100 is fully open)
		  12 		Pipe rail inlet temperature 		°C, except values of 0 indicate the pump was off (no heating was actively provided)
		  13 		Grow pipes inlet temperature 		°C, except values of 0 indicate the pump was off (no heating was actively provided)
		  14 		Lights on/off 						0/1 (1 is on)
		  23		CO2 injection status				0/1 (1 is on)
		  24 		Indoor CO2 concentration 			ppm


INFORMATION AND CONTACT
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This Readme was written in August 2023 by David Katzin, Greenhouse Horticulture and Flower Bulbs, Wageningen University and Research. david.katzin@wur.nl