Microclimate Condition in the Natural Ventilated Greenhouse

Abstract

A Greenhouse has a different microclimate compared to the outside field. Climate parameters such as solar radiation and air temperature are important parameters that affect plant growth and productivity. This research aims to understand the relation of climate factors in the inside and outside Greenhouse, the effect of microclimate on evapotranspiration and to predict the amount og evapotranspiration inside the Greenhouse. Microclimate analysis was held in two stages, the firststage was from February 5 to March 21, 2018 and the second stage from March 19 to April 29, 2019 at the Department of Civil and Environmental Engineering, IPB University. Primary data was measured by the Decagon sensor. Solar radiation was collected using the Decagon PYR Pyranometer sensor and air temperature using the Decagon VP-4 sensor. Based on the result, the daily air temperature inside the Greenhouse was higher than that of the outside. The inside solar radiation was lower than that of outside the Greenhouse. The relative humidity fluctuated, and the air pressure was higher inside the Greenhouse. Evapotranspiration inside the Greenhouse was lower than outside and solar radiation was the most determining factor of evapotranspiration.

A review study on the design and control of optimised greenhouse environments

“…A. Hoyo et al (Hoyo et al 2019) suggested a control approach based on the feedback linearisation technique and quantitative feedback theory to regulate the interior diurnal temperature in a greenhouse in the south of Spain. Vita Ayu Kusuma Dewi et al (Dewi et al 2020) study the relationship between climatic conditions within and outside the greenhouse, the influence of microclimate on evapotranspiration, and the ability to forecast evapotranspiration inside the greenhouse. The evapotranspiration value follows the climate condition due to the varied environment within and outside the greenhouse.…”

Rancangan sistem irigasi evaporatif untuk tanaman lada

“…Parameter yang paling mempengaruhi pertumbuhan dan produktivitas tanaman adalah radiasi matahari dan suhu udara (Dewi, Setiawan, Waspodo, & Liyantono, 2020). Radiasi matahari di dalam rumah tanaman di saat siang hari jauh lebih rendah dibandingkan di luar rumah tanaman.…”

Energy Design and Optimization of Greenhouse by Natural Convection

“…Studies on the heterogeneous microclimate in typical greenhouses in Central China [15], the development of microclimate models for predicting temperatures in naturally ventilated greenhouses [16], and the formulation and validation of mathematical models of greenhouse microclimates [17] are crucial for our approach. The exploration of greenhouse environment modeling and simulation for microclimate control by [18,19], as well as the works on microclimate conditions in naturally ventilated greenhouses [20], and the optimization of greenhouse microclimate parameters [21] considering the impact of CO 2 and light, make significant contributions.…”