The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate

M. Ishii, S. Sase, H. Moriyama, K. Kurata, A. Ikeguchi, Chieri Kubota, M. Hayashi, N. Sabeh, P. Romero, Gene A Giacomelli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

Under two combinations of roof and side vent openings of a semiarid greenhouse located in Tucson, Arizona, U.S.A, air and leaf temperatures, relative humidity, ventilation rate and water use (fog injection and plant water uptake) were measured. The natural ventilation rate was continuously measured by using SF6 as the tracer gas. Plant water uptake rate was measured using a sap flow gage. When the roof and side vents open, the inside temperature and ventilation rate were larger than when only the roof vent open. The inside air temperature increased with increasing ventilation rate. Converse responses were found for inside relative humidity and leaf temperature. Therefore, it follows that the vertical distribution of inside air temperature and relative humidity were increased with increasing ventilation rate. Water use in the greenhouse was reduced with decreasing ventilation rate and increasing internal relative humidity. Future work will be to develop the fog and vent control method to make air temperature and relative humidity uniform in the greenhouse and to reduce water use.

Original languageEnglish (US)
Title of host publicationActa Horticulturae
Pages491-498
Number of pages8
Volume719
StatePublished - Sep 2006

Publication series

NameActa Horticulturae
Volume719
ISSN (Print)05677572

Fingerprint

semiarid zones
relative humidity
cooling
greenhouses
air
air temperature
leaves
temperature
water
water uptake
natural ventilation
sap flow
gauges
tracer techniques
control methods
gases
injection

Keywords

  • Environmental control
  • Tomato plants
  • Tracer gas method
  • Ventilation rate

ASJC Scopus subject areas

  • Horticulture

Cite this

Ishii, M., Sase, S., Moriyama, H., Kurata, K., Ikeguchi, A., Kubota, C., ... Giacomelli, G. A. (2006). The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate. In Acta Horticulturae (Vol. 719, pp. 491-498). (Acta Horticulturae; Vol. 719).

The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate. / Ishii, M.; Sase, S.; Moriyama, H.; Kurata, K.; Ikeguchi, A.; Kubota, Chieri; Hayashi, M.; Sabeh, N.; Romero, P.; Giacomelli, Gene A.

Acta Horticulturae. Vol. 719 2006. p. 491-498 (Acta Horticulturae; Vol. 719).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ishii, M, Sase, S, Moriyama, H, Kurata, K, Ikeguchi, A, Kubota, C, Hayashi, M, Sabeh, N, Romero, P & Giacomelli, GA 2006, The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate. in Acta Horticulturae. vol. 719, Acta Horticulturae, vol. 719, pp. 491-498.
Ishii M, Sase S, Moriyama H, Kurata K, Ikeguchi A, Kubota C et al. The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate. In Acta Horticulturae. Vol. 719. 2006. p. 491-498. (Acta Horticulturae).
Ishii, M. ; Sase, S. ; Moriyama, H. ; Kurata, K. ; Ikeguchi, A. ; Kubota, Chieri ; Hayashi, M. ; Sabeh, N. ; Romero, P. ; Giacomelli, Gene A. / The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate. Acta Horticulturae. Vol. 719 2006. pp. 491-498 (Acta Horticulturae).
@inproceedings{10f35316722b406eb65704a2182cf33a,
title = "The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate",
abstract = "Under two combinations of roof and side vent openings of a semiarid greenhouse located in Tucson, Arizona, U.S.A, air and leaf temperatures, relative humidity, ventilation rate and water use (fog injection and plant water uptake) were measured. The natural ventilation rate was continuously measured by using SF6 as the tracer gas. Plant water uptake rate was measured using a sap flow gage. When the roof and side vents open, the inside temperature and ventilation rate were larger than when only the roof vent open. The inside air temperature increased with increasing ventilation rate. Converse responses were found for inside relative humidity and leaf temperature. Therefore, it follows that the vertical distribution of inside air temperature and relative humidity were increased with increasing ventilation rate. Water use in the greenhouse was reduced with decreasing ventilation rate and increasing internal relative humidity. Future work will be to develop the fog and vent control method to make air temperature and relative humidity uniform in the greenhouse and to reduce water use.",
keywords = "Environmental control, Tomato plants, Tracer gas method, Ventilation rate",
author = "M. Ishii and S. Sase and H. Moriyama and K. Kurata and A. Ikeguchi and Chieri Kubota and M. Hayashi and N. Sabeh and P. Romero and Giacomelli, {Gene A}",
year = "2006",
month = "9",
language = "English (US)",
isbn = "9066056193",
volume = "719",
series = "Acta Horticulturae",
pages = "491--498",
booktitle = "Acta Horticulturae",

}

TY - GEN

T1 - The effect of evaporative fog cooling in a naturally ventilated greenhouse on air and leaf temperature, relative humidity and water use in a semiarid climate

AU - Ishii, M.

AU - Sase, S.

AU - Moriyama, H.

AU - Kurata, K.

AU - Ikeguchi, A.

AU - Kubota, Chieri

AU - Hayashi, M.

AU - Sabeh, N.

AU - Romero, P.

AU - Giacomelli, Gene A

PY - 2006/9

Y1 - 2006/9

N2 - Under two combinations of roof and side vent openings of a semiarid greenhouse located in Tucson, Arizona, U.S.A, air and leaf temperatures, relative humidity, ventilation rate and water use (fog injection and plant water uptake) were measured. The natural ventilation rate was continuously measured by using SF6 as the tracer gas. Plant water uptake rate was measured using a sap flow gage. When the roof and side vents open, the inside temperature and ventilation rate were larger than when only the roof vent open. The inside air temperature increased with increasing ventilation rate. Converse responses were found for inside relative humidity and leaf temperature. Therefore, it follows that the vertical distribution of inside air temperature and relative humidity were increased with increasing ventilation rate. Water use in the greenhouse was reduced with decreasing ventilation rate and increasing internal relative humidity. Future work will be to develop the fog and vent control method to make air temperature and relative humidity uniform in the greenhouse and to reduce water use.

AB - Under two combinations of roof and side vent openings of a semiarid greenhouse located in Tucson, Arizona, U.S.A, air and leaf temperatures, relative humidity, ventilation rate and water use (fog injection and plant water uptake) were measured. The natural ventilation rate was continuously measured by using SF6 as the tracer gas. Plant water uptake rate was measured using a sap flow gage. When the roof and side vents open, the inside temperature and ventilation rate were larger than when only the roof vent open. The inside air temperature increased with increasing ventilation rate. Converse responses were found for inside relative humidity and leaf temperature. Therefore, it follows that the vertical distribution of inside air temperature and relative humidity were increased with increasing ventilation rate. Water use in the greenhouse was reduced with decreasing ventilation rate and increasing internal relative humidity. Future work will be to develop the fog and vent control method to make air temperature and relative humidity uniform in the greenhouse and to reduce water use.

KW - Environmental control

KW - Tomato plants

KW - Tracer gas method

KW - Ventilation rate

UR - http://www.scopus.com/inward/record.url?scp=37849188170&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37849188170&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9066056193

SN - 9789066056190

VL - 719

T3 - Acta Horticulturae

SP - 491

EP - 498

BT - Acta Horticulturae

ER -