2026-03-06T14:05:17Z https://repository.naro.go.jp/oai

oai:repository.naro.go.jp:00001926 2023-07-20T06:22:23Z 87:591:655:132:325

施設園芸用ハウスの換気抑制を目的とした冷房における空気熱源ヒートポンプ, 家庭用ヒートポンプおよび蓄熱槽利用型ヒートポンプの運転特性比較 Comparison of Three Heat Pumps for Greenhouse Cooling to Reduce Ventilation 岩崎, 泰永 イワサキ, ヤスナガ IWASAKI, Yasunaga 大石, 真実 SUZUKI, Mami 鈴木, 真実 スズキ, マミ 梅田, 大樹 ウメダ, ヒロキ UMEDA, Hiroki 松尾, 誠治 マツオ, セイジ MATSUO, Seiji Ahn, Dong-Hyuk 安, 東赫 アン, ドンヒョク 高市, 益行 タカイチ, マスユキ TAKAICHI, Masuyuki We investigated the operating characteristics of three heat pumps for greenhouse cooling to reduce ventilation. The heat pumps were installed in three adjacent tunnel greenhouses (4.5m wide, 7.0m long, 2.7m high) in Taketoyo-cho, Aichi prefecture. We tested an air-to-air heat pump designed for office or factory use (HPair, 3.75kW rated electric power consumption), another designed for home use (HPhome, 2.90kW), and a water-to-air heat pump combined with a heat storage tank (HPwater, 3.0 kW) The average (24h) outside temperature during the experimental period (14 to 18 April 2014) was 20℃, and the highest was 28℃. The average hourly solar radiation (06 : 00 to 18:00) was 0.36 kW・m^–2, and the maximum was 0.7 kW・m^–2. HPhome had the highest coefficient of performance (COP), with an average hourly COP of 6.1 and a maximum of 8.5. HPair had an average hourly COP of 2.5 and a maximum of 5.2. The COP of HPwater was almost the same as that of HPair. The energy-use efficiency of HPhome was higher than that of HPair in cooling. To improve the COP of HPwater, we need to optimize the balance between the size of the water tank and the set water temperature in the tank. 独立行政法人 農業・食品産業技術総合研究機構 2015-03-10 jpn departmental bulletin paper VoR https://doi.org/10.24514/00001856 https://repository.naro.go.jp/records/1926 10.24514/00001856 10.24514/00001856 1346-6984 野菜茶業研究所研究報告 Bulletin of the National Institute of Vegetable and Tea Science 14 65 74 https://repository.naro.go.jp/record/1926/files/nivts_report_No14p65-74p.pdf application/pdf 1.7 MB 2019-03-19