AN ANALYTICAL METHOD OF LED LIGHTING DESIGN FOR GREENHOUSES WITH PHOTOSYNTHETIC FLUX DENSITY PREDICTION

PEDRO LAGUARDIA TAVARES; JOSÉ  MACHADO SCHRODER DUTRA; DÊNIS DE CASTRO PEREIRA; ALINE ROCHA SILVA; VINICIUS  MORAES DE ALBUQUERQUE; RAFAEL  MARCIO DA SILVA BRIER DE SALES; CRISTIANO  FERRARA DE RESENDE; PAULO  HENRIQUE PEREIRA PEIXOTO; HENRIQUE ANTÔNIO CARVALHO BRAGA; PEDRO SANTOS ALMEIDA

doi:10.20906/CBA2022/55

PEDRO LAGUARDIA TAVARES Universidade Federal de Juiz de Fora
JOSÉ MACHADO SCHRODER DUTRA Universidade Federal de Juiz de Fora
DÊNIS DE CASTRO PEREIRA Universidade Federal de Juiz de Fora
ALINE ROCHA SILVA Universidade Federal de Juiz de Fora
VINICIUS MORAES DE ALBUQUERQUE Universidade Federal de Juiz de Fora
RAFAEL MARCIO DA SILVA BRIER DE SALES Universidade Federal de Juiz de Fora
CRISTIANO FERRARA DE RESENDE Universidade Federal de Juiz de Fora
PAULO HENRIQUE PEREIRA PEIXOTO Universidade Federal de Juiz de Fora
HENRIQUE ANTÔNIO CARVALHO BRAGA Universidade Federal de Juiz de Fora
PEDRO SANTOS ALMEIDA Universidade Federal de Juiz de Fora

DOI: https://doi.org/10.20906/CBA2022/55

Keywords: Light emitting diodes, Plant growth, Greenhouse design, Cosine Receptor, High current COB LED

Abstract

This paper bases on photosynthetic radiation concepts to propose an analytical method to identify Yield Photon Flux Density (YPFD) needed for proper growth of different plants species and calculate its correlated Yield Photon Flux (YPF) according to certain distance between plant canopy and lighting source. The studies have been applied consider-ing the Humulus lúpulos (Hop) as the object of research under High Flux Chip-On-Board (COB) Light-Emitting Diode (LED) to perform the radiation source for experiments and validation of calculus proposed. The design includes, first-ly, the flux density amount and distance between luminaire and plant to estimate the YPF, which is converted from ra-diant flux. Next, the radiant flux value is approached to compare models of LEDs, which are appropriate for the pro-ject and specify its profiles. In the end, the work shows a comparison based on values extracted from two scenarios: an experiment of a COB LED operating in rated current conditions, while collecting its flux density by a cosine Recep-tor in addition with a spectrometer and, the second scenarios consists in the theoretical data found by equations proposed for the design method.