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All Journal Jurnal Bios Logos Jurnal Teknologi Pertanian (Agricultural Technology Journal) Jurnal Agroekoteknologi Terapan Journal of Agriculture (JoA) COCOS
Ruland Rantung
Program Studi Teknik Pertanian, Jurusan Teknologi Pertanian Fakultas Pertanian UNSRAT
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Environmental Science Immunology & microbiology Medicine & Pharmacology

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Microclimate Characteristics of a Tropical Smart Greenhouse with Integrated Cooling Rumambi, David Paul; Rantung, Ruland Aswin
Jurnal Agroekoteknologi Terapan Vol. 7 No. 3 (2026): ISSUE SEPTEMBER 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i3.70431

Abstract

Smart greenhouses offer opportunities to manage the growing environment, but their microclimate performance should be evaluated before claims are made about crop productivity. This study describes temperature, relative humidity, and light conditions observed in a greenhouse equipped with an integrated evaporative cooling assembly. Observations were reported over seven days, with measurements grouped into morning, midday, and late-afternoon periods. The reported mean air temperatures were 22.12 °C in the morning, 31.20 °C at midday, and 24.28 °C in the late afternoon. Corresponding mean relative humidities were 76%, 59%, and 70%, respectively. The maximum recorded air temperature was 40.5 °C on the first observation day, while the minimum relative humidity was 49% on the fourth day. Midday light intensity ranged from 10,000 to 21,000 lux. The indoor midday temperature was also reported to average 2.7 °C above outdoor conditions and that indoor and outdoor midday relative humidities were 59% and 57%, respectively. These findings document substantial daily microclimate variation, but the available summaries do not provide matched measurements before and after cooling activation or a complete statistical dataset. Consequently, they cannot establish the magnitude of the system's cooling effect or any improvement in crop yield. The study provides preliminary operational information for greenhouse microclimate management in tropical environments and identifies the need for synchronized indoor–outdoor monitoring and direct on–off performance comparisons.
Co-Authors Batin E. Tuwuilu Cindy Tamberongan Dahlan Daniel Ludong Daniel P M. Ludong Daniel P. M Ludong Daniel P.M. Ludong David P Rumambi David P. Rumambi David P. Rumambi Dedie Tooy Dewinta Lantang Elivia Salulinggi Erna Marlina Piri Esar Rante Kayangan Feryatmono O. Geso Freeke Pangkerego Freeke Pangkerego, Freeke Gabriela A. Assa Gabriela Ruth Zulfikar Zulfikar Gebbi Y. Ngajow Herry F. Pinatik Herry Frits Pinatik Idhansyah . Ireine A. Longdong Ireine Adriana Longdong Isak T. Sulle Johansen Sinulingga Junita . Kalesaran, Leo H. Lady C. Ch. E. Lengkey Lalensang, Christanti Lantang, Dewinta Leo H. Kalesaran Leo H. Kalesaran Leo Kalesaran Longdong, Ireine Adriana Ludong , Daniel P. M. Ludong, Daniel P. M. Manoppo, Yesica Febriani Meike C. Kusaly Ngajow, Gebbi Y. Novianti Nari Pangaila, Shilviana Sischa Pangalila, Nova D. E. Pinatik, Herry Frits Robert Molenaar Rumambi, David P Rumambi, David Paul sembiring, julian Sompie, Mutiara Stefy Wagiu Stehvani Regina Sigar Stella M.E. Kairupan Tadung, Sri Wanni Jumiati Virsawan Paputungan