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Home > International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory – Greensys 2013 > COMBINED ROOF AND SIDE VENTILATION WITH MISTING AND AIR BLOWING FOR COOLING TROPICAL GREENHOUSES

Articles

COMBINED ROOF AND SIDE VENTILATION WITH MISTING AND AIR BLOWING FOR COOLING TROPICAL GREENHOUSES

Article number

1037_69

Pages

555 – 561

Language

English

Abstract

Temperature regulation in tunnel greenhouses used for protected culture in tropical Asia mostly depends on natural (static) ventilation.
This single mode of greenhouse cooling is inadequate during less windy and peak hot periods, causing to heat up the greenhouse interior to temperatures beyond 35°C, unfavorable for plant growth and development.
Therefore individual and combined use of different temper¬ature control strategies, namely enhanced natural ventilation, forced-air exchange and evaporative cooling were tested for their efficacy in a commercial scale greenhouse (without vegetation inside) under humid tropical conditions in Sri Lanka.
Enlarged roof vent (up to 36% of the floor area) with net-covered side vent (mesh size: 20 or 40) improved greenhouse ventilation based temperature control, making the mean day¬time temperature in the greenhouse down to the level outside (33°C) and without affecting the internal relative humidity (RH) significantly (63-65%). Forced-air intake was more effective for temperature regulation, compared to exhaust when introduced to naturally ventilated greenhouses.
Combined use of forced-air exhaust and intake contributed to maintain RH at a minimum difference with the outside air.
Misting could reduce the internal temperature far below the outside (30°C) when operated with improved natural ventilation, subjected to slight increase in RH. With further improvements, forced-air ventilation would be used to bring down the internal RH, increased due to misting in naturally ventilated tunnel greenhouses in the tropical region.

Publication

International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory – Greensys 2013

Authors

W.A.P. Weerakkody, J.M.U. Jayasinghe, G. Prathpasinghe

Keywords

jack roof, insect-proof netting, forced-air, temperature, relative humidity

Full text

https://doi.org/10.17660/ActaHortic.2014.1037.69

Online Articles (152)

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108. BIOREGULATION POTENTIAL OF ARBUSCULAR MYCORRHIZAL FUNGI ON HEAT STRESS AND ANTHRACNOSE TOLERANCE IN CYCLAMEN

Y. Matsubara | C. Ishioka | M.A. Maya | J. Liu | Y. Takami

109. BOTRYTIS CINEREA SPECTRAL CHARACTERISTICS AND LIGHT SOURCE SENSITIVITY ANALYSIS IN THE GREENHOUSE

E.G. Choi | C.H. Kim | G.Y. Beak | M.H. Kim | H.T. Kim | D.E. Kim | Y.C. Yoon

110. LEDS SUPPLEMENTAL LIGHTING FOR VEGETABLE TRANSPLANT PRODUCTION: SPECTRAL EVALUATION AND COMPARISONS WITH HID TECHNOLOGY

R. Hernández | C. Kubota

111. THE LOWEST LIGHT INTENSITY OF COMPLEX LED MIXED RED AND FAR-RED LIGHT ON INHIBITION OF CHRYSANTHEMUM ‘IWA NO HAKUSEN’

Y. Liao | Y. Takai | A. Kato | K. Suzuki | D. Zhuang | R. Ogasawara | T. Shimazu | E. Kawamoto | H. Fukui

112. GROWTH AND PHYTOCHEMICALS IN LETTUCE AS AFFECTED BY DIFFERENT RATIOS OF BLUE TO RED LED RADIATION

Jae Su Lee | Tae Gyu Lim | Yong Hyeon Kim

113. EFFECTS OF LED LIGHT QUALITIES ON GROWTH AND PHOTOSYNTHETIC PIGMENTS OF ATRACTYLODES MACROCEPHALA

J.J. Zhao | Q.C. Yang | W.K. Liu

114. SUPPLEMENTAL LIGHTING FOR GREENHOUSE-GROWN TOMATOES: INTRACANOPY LED TOWERS VS. OVERHEAD HPS LAMPS

C. Gómez | C.A. Mitchell

115. IDENTIFYING THE OPTIMUM LIGHT CYCLE FOR LETTUCE GROWTH IN A PLANT FACTORY

R. Hiroki | H. Shimizu | A. Ito | H. Nakashima | J. Miyasaka | K. Ohdoi

116. LIGHT MANIPULATING IN GREENHOUSES FOR PLANT REQUIREMENTS

A.M. Almoshileh | M.A. Al-Dhuwaian

117. PULSING EFFECTS OF SUPPLEMENTAL LED LIGHTING ON CUCUMBER SEEDLINGS GROWTH AND MORPHOLOGY IN GREENHOUSE

R. Hernández | A. Dragotakes | C. Kubota

118. MATERIAL TECHNOLOGY OF DIFFUSE GREENHOUSE COVERING MATERIALS – INFLUENCE ON LIGHT TRANSMISSION, LIGHT SCATTERING AND LIGHT SPECTRUM

S. Hemming | V. Mohammadkhani | J. van Ruijven

119. COVERING PLASTIC FILMS FOR VINEYARD PROTECTED CULTIVATION

G. Vox | E. Schettini | G. Scarascia Mugnozza | L. Tarricone | L. de Palma

120. VARIATION OF THE MECHANICAL AND RADIOMETRIC PROPERTIES OF LDPE GREENHOUSE FILMS EXPOSED TO AGROCHEMICALS AND SOLAR RADIATION

L. Stefani | G. Vox | E. Schettini

121. EFFECTS OF SHADING BY NIR-EXCLUDING MATERIALS ON THE PHOTOSYNTHESIS AND TRANSPIRATION OF TOMATO PLANTS

Y. Ishigami | N. Kobayashi | E. Goto

122. AN OVERVIEW OF BIODEGRADABLE FILMS AND SPRAY COATINGS AS SUSTAINABLE ALTERNATIVE TO OIL-BASED MULCHING FILMS

G. Santagata | M. Malinconico | B. Immirzi | E. Schettini | G. Scarascia Mugnozza | G. Vox

123. OPTICAL CHARACTERISTICS OF THREE MULCHING MATERIALS FOR OPEN FIELD GARLIC PRODUCTION

J.K. Kwon | B. Khoshimkhujaev | J.M. Hwang

124. CHANGES IN SOIL MICROCLIMATES BY USING DIFFERENT MULCHES AND REMOVING TIME OF PE FILM IN GARLIC (ALLIUM SATIVUM) FIELD

K.S. Kwon | M.O.K. Azad | J.M. Hwang | J.K. Kwon

125. OPTICAL CHARACTERISTICS OF THREE WOVEN PLASTIC FILMS

B. Khoshimkhujaev | J.K. Kwon | K.S. Park | S.Y. Lee | H.G. Choi

126. EFFECT OF NET-COVERED WINDBREAK ON LEAKAGE RATE OF A GREENHOUSE

T. Kuroyanagi | S. Matsuda | H. Kawashima | Y. Nagasaki

127. DYNAMICS OF CLIMATIC CONDITIONS IN A GREENHOUSE: TWO LOCATIONS IN MEXICO

F. Rojano | J. Flores-Velázquez | F. Villarreal-Guerrero | A. Rojano

128. NEW DEVELOPMENT OF A STRAIGHTFORWARD METHOD OF ESTIMATING AGE-OF-AIR USING CFD

SeJun Park | In-bok Lee | Sewoon Hong

129. ASSESSING GREENHOUSE CLIMATE USING CFD: A FOCUS ON AIR HUMIDITY ISSUES

P.E. Bournet

130. OPTIMUM PHOTOBIOREACTOR DESIGN TO IMPROVE MICROALGAE PRODUCTIVITY USING CFD

Il-Hwan Seo | In-bok Lee | J.P. Bitog | Rack-Woo Kim

131. EXPERIMENTAL AND CFD RESULTS ON THE CO₂ DISTRIBUTION IN A SEMI CLOSED GREENHOUSE

J.C. Roy | J.B. Pouillard | T. Boulard | H. Fatnassi | A. Grisey

132. WIND PRESSURE COEFFICIENTS DETERMINATION FOR GREENHOUSE BUILT ON A RECLAIMED LAND

Taehwan Ha | In-bok Lee | Hyunseob Hwang | Jeongsu Ha

133. AIRFLOW AROUND AGRICULTURAL BUILDINGS: MEASUREMENTS IN A WIND TUNNEL AND DIRECT NUMERICAL SIMULATION

G.K. Ntinas | G. Zhang | V.P. Fragos

134. ANALYSIS OF THE TIME EVOLUTION OF THE INTERCEPTED RADIATION INSIDE A CROP USING CFD

B. Morille | P.E. Bournet | C. Migeon

135. CFD MODELING OF MICROCLIMATE IN THE LEAF BOUNDARY LAYER, ECOLOGICAL NICHE OF PESTS

H. Fatnassi | T. Boulard | C. Poncet | T. Bartzanas | N. Katsoulas | M. Kacira

136. GREENHOUSE AIR DYNAMICS IN FOLIAGE

F. Rojano | J. Flores-Velázquez | F. Villarreal-Guerrero | A. Rojano

137. CO-SIMULATION OF THE MICROCLIMATE INSIDE A GREENHOUSE BY COUPLING ENERGY AND CFD MODELS

L. Serir | P.E. Bournet

138. ASSESSING THE DAILY EVOLUTION OF THE CLIMATE INSIDE A GREENHOUSE UNDER SEMI-ARID CONDITIONS USING FIELD SURVEYS AND CFD MODELLING

K. Mesmoudi | P.E. Bournet

139. SOIL EROSION PREDICTION IN DRY FIELD USING COMPUTATIONAL FLUID DYNAMICS SIMULATION

H.-S. Hwang | S.-W. Hong | I.-B. Lee | K.-S. Kwon

140. SAWDUST AND COCO COIR AS GROWING MEDIA FOR GREENHOUSE CHERRY TOMATOES

A. Ramírez-Arias | J. Pineda-Pineda | M. Gutiérrez | W. Ojeda-Bustamante

141. USE OF A DECISION SUPPORT SYSTEM FOR MANAGEMENT OF THE DRAINAGE SOLUTION IN SEMI-CLOSED HYDROPONIC SYSTEMS UNDER DIFFERENT DRAINAGE FRACTIONS

N. Katsoulas | C. Kittas | T. Bartzanas | D. Savvas

142. INTRODUCING A POTENTIALLY ORGANIC HYDROPONICS SYSTEM IN PRODUCTION OF POT GERBERA FLOWERS

Z. Farajollahzadeh | E. Hadavi | A. Khandan-Mirkohi

143. PREDICTING TOMATO TRANSPLANT WATER NEED GROWN UNDER DIFFERENT ECS OF NUTRIENT SOLUTION

M. Delshad | N. Heydari

144. ALTERNATIVE GROWING MEDIA FOR GROWBAG TOMATO PRODUCTION IN KUWAIT

M. Albaho | B. Thomas | S. Isathali | P. George | D. Ghloum

145. APPLICATION OF VINEGAR RESIDUE SUBSTRATE IN NURSERY AND CULTIVATION OF TOMATO

Yu Zhang | Jin Sun | Shuhai Li | Sheng Shu | Shirong Guo

146. COMPARATIVE ANALYSIS OF FOUR COST EFFECTIVE LABORATORY METHODS FOR QUANTIFICATION OF MICROALGAE BIOMASS IN CONTROLLED ENVIRONMENT WASTEWATER AND NUTRIENT MEDIA

J. Lowrey | I. Yildiz

147. INVESTIGATION OF HETEROTROPHIC CULTIVATION POTENTIAL OF CHLORELLA VULGARIS AND TETRASELMIS CHUII IN CONTROLLED ENVIRONMENT WASTEWATER GROWTH MEDIA FROM DAIRY, POULTRY AND AQUACULTURE INDUSTRIES

J. Lowrey | I. Yildiz

148. EFFECT OF CONCENTRATION OF NUTRIENT SOLUTION ON THE GROWTH AND YIELD OF ROSES DURING THE JUVENILE PERIOD AND MORE THAN ONE YEAR AFTER TRANSPLANTING USING COIR SUBSTRATE IN HYDROPONICS

G.L. Choi | M.W. Cho | J.W. Cheong | H.C. Rhee | K.H. Yeo | N.J. Kang

149. EFFECTS OF NUTRIENT MANAGEMENT ON YELLOW SHOULDER FRUIT INCIDENCE AND CAROTENOID METABOLISM FOR TOMATO GROWN IN THE EXTREMELY LOW VOLUME SUBSTRATE

Yiting Zhang | Y. Kiriiwa | A. Nukaya

150. EFFECTS OF NATURAL VENTILATION RATE ON TEMPERATURE AND RELATIVE HUMIDITY IN A NATURALLY VENTILATED GREENHOUSE WITH HIGH PRESSURE FOGGING SYSTEM

M. Ishii | L. Okushima | H. Moriyama | S. Sase | T. Takakura | M. Kacira

151. EXPOSURE OF GREENHOUSE WORKERS TO PESTICIDES

C. Kittas | N. Katsoulas | T. Bartzanas | M. Kacira | T. Boulard

152. PLANT SIZE AT FLOWER INDUCTION AFFECTS FLOWERING OF PHALAENOPSIS ORCHIDS

R. Paradiso | S. De Pascale

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