Date

5-2010

Degree

Bachelor of Science in Agricultural Engineering

Major Course

Major in Structures and Environment

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Ronaldo B. Saludes

Committee Member

Moises A. Dorado, Vicente Ballaran, Jr.

Abstract

This study aimed to evaluate the microclimatic environment of a tunnel-type greenhouse. To achieve this objective, the actual temperature and relative humidity of the inside and outside environments were studied and simulation model of the greenhouse was developed using CFD analysis. The validity of the model was verified by comparing the simulated values to the actual experiment set up. Results showed that the simulated model could be used to predict the microclimate inside the greenhouse. The design of the structure was modified using CFD analysis to improve the microclimatic conditions inside. Measurements of temperature and relative humidity were done in the middle section of the greenhouse. The difference in temperature between the inside and outside condition ranged from -3.31°C to 6.31°C. The difference in relative humidity ranged from 23.57% to 58.33%. The average difference between the actual and the simulated temperature inside the greenhouse ranged from -2.02°C to 3.03°C. Modification of the greenhouse design was done by putting vents on the roof area. Simulation results showed that the modified design had an improved microclimate as compared to the original model of the greenhouse. The upper region of the modified greenhouse had lower temperature since exhausts were provided and thus there was no accumulation of warm air.

Language

English

Call Number

LG 993.5 2010 A2 L34

Document Type

Thesis

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