CAJ | 학술논문

为减少人工光植物工厂中空调降温耗电量,该文利用风机引进外界低温空气与空调协同降温方式,以低功率的风机减少高功率空调的运行时间.结果表明,与仅利用空调进行降温的对照植物工厂相比,利用风机和空调协同降温的试验植物工厂节能效果明显,当植物工厂内部明、暗期空气温度分别设定在25℃和15℃,外界空气温度在-4~12℃时,明期耗电量的节省率为24.6%~63.0%,暗期为2.3%~33.6%,其节能效果随着外界空气温度的降低而增加;并且该降温方式可以将植物工厂内空气温度控制在目标值.因此,采用风机与空调协同方式对植物工厂内空气温度进行调控,可以减少植物工厂降温耗电量,降低其运行成本.
위감소인공광식물공엄중공조강온모전량,해문이용풍궤인진외계저온공기여공조협동강온방식,이저공솔적풍궤감소고공솔공조적운행시간.결과표명,여부이용공조진행강온적대조식물공엄상비,이용풍궤화공조협동강온적시험식물공엄절능효과명현,당식물공엄내부명、암기공기온도분별설정재25℃화15℃,외계공기온도재-4~12℃시,명기모전량적절성솔위24.6%~63.0%,암기위2.3%~33.6%,기절능효과수착외계공기온도적강저이증가;병차해강온방식가이장식물공엄내공기온도공제재목표치.인차,채용풍궤여공조협동방식대식물공엄내공기온도진행조공,가이감소식물공엄강온모전량,강저기운행성본.
In recent years, the use of plant factory with artificial light (PF) for plant production is gradually increasing in many countries due to its incomparable advantages compared with other plant production systems, such as improving the utilization efficiencies of water and land, improving work conditions. However, the higher initial construction and operation costs limit the further use of the PF. The main electric-energy consumption by air conditioner (AC) for cooling accounts for 15%-25% of the total energy consumption in the PF. In this experiment, the objective of this study is to reduce the electric-energy consumption for cooling in the PF. The air temperature inside the two PFs (floor area: 10.5 m2) was maintained at 25°C and 15°C during photoperiod and dark period, respectively. In one PF, an air exchanger (AE, air quantity: 250 m3/h) was used along with an AC to maintain the inside air temperature at the set-point. The air exchanger was used to exchange the air inside with that outside when the air temperature outside was lower than a certain degree. When the inside air temperature could not maintained at the set-point, the AC would start. In another PF only an AC was used. The results showed that the electric-energy consumption in the PF with AE reduced by 24.6%~63.0% and 2.3%~33.6% when the outside air temperature ranged from -4°C to 12°C, and the runtime of air conditioner reduced by 36.6%~82.0%and 16.3%~64.2% when the outside air temperature ranged from -4°C to 6°C, during photoperiod and dark period, respectively, compared with the electric-energy consumption in the PF only with AC. And the reduction rates of electric consumption and the runtime of air conditioner increased with the decrease of the air temperature outside. Moreover, the air temperature inside the PF with AE could be maintained at the set-point. The above results indicate that the electric-energy consumption for cooling can be reduced by using the AE compared with the AC. Thus, the use of AE in the PF will be an effective way to reduce electric-energy consumption for cooling and the operation cost.