• 专利标题:   System to produce paraffin-based phase change material composite material for latent heat storage system for thermal energy, comprises two chambers to prepare two separate solutions, each graphite powder and sodium nitrate in sulfuric acid.
  • 专利号:   DE202022101525-U1
  • 发明人:  
  • 专利权人:   BARMAN P, BHAGWAT V V, CHOWDHURY A, DAS B, DAS N S, DEBBARMA S
  • 国际专利分类:   C01B032/23, C09K005/06
  • 专利详细信息:   DE202022101525-U1 19 May 2022 C09K-005/06 202244 Pages: 18 German
  • 申请详细信息:   DE202022101525-U1 DE20101525 23 Mar 2022
  • 优先权号:   DE20101525

▎ 摘  要

NOVELTY - System (100) comprises at least two chambers (102) to prepare two separate solutions, each with 0.2 g graphite powder and sodium nitrate in sulfuric acid as a solvent while stirring in a hot plate magnetic stirrer (104); an ice bath (106) to cool solution to below 13 degrees C by slowly adding 1.2 g potassium permanganate; a heating element (108) to heat solution at 96 degrees C while adding 56 ml deionized water after cooling solution to room temperature before final addition of hydrogen peroxide; a centrifuge to repeatedly wash solution by centrifuging with 10% hydrochloric acid solution and deionized water to produce precipitate; a hot air oven to dry precipitate at 60 degrees C for 5 hours to obtain final graphene oxide powder; a vacuum furnace to produce thermally reduced graphene oxide by filling graphene oxide powder in alumina boat, which is in vacuum furnace at 700 degrees C for 5 hours; and ultrasonic device in which mixture of paraffin and exfoliated reduced graphene oxide is sonicated for 60 minutes. USE - The system is useful to produce paraffin-based phase change material composite material for latent heat storage system for thermal energy (claimed). ADVANTAGE - The system is economical and environmentally friendly. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the system. System (100) Chamber (102) Magnetic stirrer (104) Ice bath (106) Heating element (108)