Effect on Heat Regulation of Introducing an Openable Roof into Greenhouses Used for Horticulture during the Summer Season in the Hokkaido Sorachi Region

概要

論文の詳細を見る
For horticultural purposes, plastic greenhouses are used during the summer season in the Hokkaido Sorachi region. We studied the effect of moderating the hot environment of the greenhouse by introducing an openable roof. Thus, the environment of inside the openable roof greenhouse was compared with that inside a conventional greenhouse.The temperature in the openable roof greenhouse was occasionally at least 5°C below that in the conventional greenhouse. The total time required for the temperature within the openable roof greenhouse to exceed 30°C was reduced to about one third that required for the same temperature to be reached within the conventional greenhouse.The wet bulb globe temperature (WBGT) is used as an index of for hyperthermia prevention in working environments. In terms of the total time for the WBGT to exceed 28°C, as defined by the Ministry of Health, Labour, and Welfare for the work of involving the picking of fruits and the vegetables under warm conditions for the persons accustomed to hot environments, the openable roof greenhouse has the advantage of shortening this time to about one third that of the conventional greenhouse.The low-cost option of introducing of an openable roof greenhouse can be achieved by easy remodeling a conventional greenhouse. The cost of materials for remodeling is about 200, 000yen for a greenhouse that is 50m in length.
農業施設学会の論文