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논문 기본 정보

자료유형
학술대회자료
저자정보
Jaewook Shin (Seoul National University) Byungkwan Lee (Seoul National University) Minh Duy Pham (Seoul National University) Hyunseung Hwang (National Institute of Horticultural & Herbal Science) Meiyan Cui (Seoul National University) Hyein Lee (Seoul National University) Jeesang Myung (Seoul National University) Changhoo Chun (Seoul National University)
저널정보
한국원예학회 한국원예학회 학술발표요지 원예과학기술지 제39권 별호Ⅱ [초록집]
발행연도
2021.10
수록면
87 - 88 (2page)

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초록· 키워드

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Root-zone pipe cooling is a method to overcome the high air temperature in the summer season without high cooling load and cost in the greenhouse by using cooling pipes in close contact with the substrate. Few studies have been conducted on the substrate’s thermal characteristics and suitability for pipe cooling. We investigated the thermal characteristics of four substrates; coir, commercial growing media (Plant World; Nong Woo Bio, Suwon, Korea), perlite, and rockwool at two moisture contents; 40 and 80% (w/w). A silicone tube (8 mm in diameter) was coiled six times inside a container (170 mm in diameter), and chilled water of 15°C was circulated with a rate of 2.7 L min<SUP>-1</SUP>. Smaller pots (150 mm in diameter, 1.4 L) were filled with each type of substrates and adjusted to the moisture content of 40 or 80%. The smaller pot was then inserted into the container with the cooling pipe and cooled for 80 min. During the study, the average air temperature and relative humidity was set as 25°C and 63%, respectively. The temperature was measured with thermocouples at four positions (upper, middle, lower, and side points). The pipe cooling method reduced the temperature of substrate by 7.9–16.4°C depending on the type and moisture content showing that this is an effective method for controlling ro ... 전체 초록 보기

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