带地下卵石床蓄热装置的日光温室增温实验研究

Experimental study on temperature increasing in solar greenhouse with underground pebble bed thermal storage

建成了带有卵石床地下蓄热装置的示范温室,并与对照温室进行了比较。实验实测结果表明:卵石床地下蓄热系统的蓄热功率为94 W/m2左右,大于蓄热功率为76 W/m2的地下埋管蓄热系统,该日光温室夜间最低温度比无蓄热装置的对照温室提高了5～8℃,降低了温室的昼夜温差,为喜温作物越冬生产创造了有利的温度条件。

A demonstrative solar greenhouse with underground pebble bed thermal storage was established and compared with a control case greenhouse. The experimental result shows that the thermal storage power of pebble bed system is more than that of buried pipe system with the former 94 W/m2 and the latter 76 W/m2. The lowest night temperature of the solar greenhouse with thermal storage is 5-8 ℃, which is higher than that of the greenhouse without thermal storage, and the diurnal amplitude in the solar greenhouse is decreased. The solar greenhouse facilitates the thermophilic crops to live through the winter.