Diagram of the experiment
Image: State Polytechnic of Ujung Pandang
Researchers at Politeknik Negeri Ujung Pandang in Indonesia have proposed utilizing vacuum stress to cut back the working temperature of PV modules.
“Amua The vacuum method continues to be within the improvement stage,” researcher Suryanto Suryanto instructed pv journal. “however our plan is to convey it to market sooner or later.”
The passive cooling methodology includes a casing of put a unfavorable stress across the PV module. Unfavourable stress is stress decrease than the present atmospheric stress and is a situation the place the air stress is decrease in a single place in comparison with one other.
“If the stress in a room is lowered, it should decrease the temperature of the room,” defined the scientists.
They utilized it to a photo voltaic module a casing body manufactured from wooden materials with a thickness of 18 mm. The casing is roofed with 5 mm glass – sufficient to resist unfavorable stress. it makes use of a valve to permit air to be sucked from the casing by a vacuum pump and a stress sensor to measure stress circumstances within the PV casing chamber.
Utilized by researchers a temperature sensor to watch the higher and decrease a part of the PV module and a temperature logger to gather all the info. They in contrast the efficiency of the cooled panel with a reference module with out cooling at an ambient air temperature of about 35 C to 36 C.
They discovered that the cooled module had a present starting from 0.89 A to 0.91 A, whereas the reference module was solely 0.62 A. They noticed that the floor temperature of the PV panel underneath vacuum stress reaches a temperature of between 29 C and 30 C, whereas that of the uncooled module is between 44 C and 45 C.”
Suryanto mentioned that the addition of this cooling method to the PV system might lead to elevated prices of $30/kW to $50/kW.
“Due to the plans for mass manufacturing, we are going to significantly contemplate it within the close to future, in fact with the cooperation of events within the trade,” he concluded. “Additional investigation of know-how prices ought to be carried out in future work. “
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