본 연구는 고단열 복층 진공유리를 온실 피복재로 적용했을
때의 작물 생육 환경과 에너지 소비량을 규명하기 위하여, 폭
8m·길이 10m·측고 3.7m·동고 6m 규격의 복층 진공유리온
실과 동일 규격의 일반유리온실에서 토마토를 재배하며 비교
하였다. 각 온실에 온습도 로거 18개(3×3×2 격자)와 온습
도·CO2 로거 1개, 온수 공급관에 적산열량계를 설치하여 계
측하였다. 진공유리온실의 내부 기온은 일반유리온실보다
평균 1.1°C 높았고, 저온기 야간에 일반유리온실이 생육 한계
온도(10.5°C) 이하에 85.3시간 노출된 반면 진공유리온실은
노출되지 않았다. 진공유리온실의 투과 일사량은 일반유리온
실의 58% 수준이었고, 이로 인해 초기 생육은 진공유리온실
이 빨랐으나 최종 초장은 두 온실 간 유의한 차이가 없었다
(p>0.05). 진공유리온실의 난방에너지는 일반유리온실의
49.9% 수준이었으나 수확량은 낮았고(192.4 대 229.7kg), 그
결과 에너지이용효율은 진공유리온실이 1.7배 높았다(4.60
대 2.70kg·MWh-1). 진공유리는 시설원예 탄소배출 저감에
효과적이나, 실용화를 위해서는 광 투과율을 높이기 위한 추
가 연구가 필요하다.

This study evaluated the crop growth environment and energy consumption of a greenhouse clad with high-insulation double-layer vacuum glazing, in comparison with an identically sized single-glass greenhouse (each 8 m wide, 10 m long, 3.7 m to the eaves and 6 m to the ridge) at the Protected Horticulture Research Institute in Haman, Korea. ‘Doterangdia’ tomato, seedlings (sown 13 Oct.) were transplanted on 20 Dec. and grown until 31 May. Eighteen temperature－humidity loggers arranged in a 3×3×2 grid plus one temperature－humidity－CO2 logger were installed in each greenhouse, and heat supply was metered with a digital integrating calorimeter on each hot-water line. The internal air temperature of the vacuum-glass greenhouse was on average 1.1°C higher than the single-glass greenhouse, and its spatial non-uniformity (0.65－0.79°C) was smaller than the between-greenhouse difference. During 28 Dec.－18 Jan., the single-glass greenhouse remained below the tomato low-temperature limit (10.5°C) for 85.3 h (minimum 8.3°C), whereas the vacuum-glass greenhouse never fell below it (minimum 11.0°C). Transmitted solar radiation in the vacuum-glass greenhouse was 58% of that in the single-glass greenhouse. Early crop growth was faster under vacuum glazing, but growth rate was overtaken by the single-glass greenhouse from mid-March; final plant height did not differ significantly (302.2 vs 304.9 cm, p > 0.05). Heating energy of the vacuum-glass greenhouse was 49.9% of the single-glass greenhouse, while total yield was lower (192.4 vs 229.7 kg). Consequently the vacuum-glass greenhouse achieved a 1.7-fold higher energy-use efficiency (4.60 vs 2.70 kg·MWh-1). Double-layer vacuum glazing is therefore highly effective for reducing heating energy and carbon emissions, but its light transmittance must be improved before it can be adopted as a general greenhouse cladding.

Abstract
서 론
재료 및 방법
    1. 시험온실
    2. 시험작물
    3. 측정 센서 및 데이터 수집 방법
    4. 통계 분석
결과 및 고찰
    1. 온실 환경
    2. 작물 생육 및 수확량
    3. 에너지 사용량 및 에너지이용효율
적 요
사 사
Literature Cited

• 김진구(국립원예특작과학원 시설원예연구소 연구사) | Jin Gu Kim (Researcher, Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science, Haman 52054, Korea)
• 김정호(국립원예특작과학원 시설원예연구소 연구사) | Jeong Ho Kim (Researcher, Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science, Haman 52054, Korea)
• 최만권(국립원예특작과학원 시설원예연구소 연구사) | Man Kwon Choi (Researcher, Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science, Haman 52054, Korea)
• 신현호(국립원예특작과학원 시설원예연구소 연구사) | Hyun Ho Shin (Researcher, Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science, Haman 52054, Korea)
• 조병관(충남대학교 교수) | Byoung Kwan Cho (Professor, Chungnam National University, Daejeon 34134, Korea) Corresponding author
• 권기범(국립원예특작과학원 시설원예연구소 연구관) | Ki Bum Kweon (Senior Researcher, Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science, Haman 52054, Korea)
• 황성현(㈜이건창호 팀장) | Sung Hyun Hwang (Manager, Eagon, Incheon 22107, Korea)
• 이태석(농촌진흥청 연구사) | Tae Seok Lee (Researcher, Rural Development Administration, Jeonju 54875, Korea)