Analysis on innovative modular sorption and resorption thermal cell for cold and heat cogeneration. (15th October 2017)

• Record Type: Journal Article
• Authors: Jiang, L.; Roskilly, A.P.; Wang, R.Z.; Wang, L.W.; Lu, Y.J.
• Is Part Of: Applied energy. Volume 204(2017)
• Page Start: 767
• Page End: 779
• Publication Date: 2017-10-15
• Subjects: Composite sorbent -- Heat and mass transfer performance -- Sorption characteristic -- Resorption thermal cell; Power (Mechanics) -- Periodicals; Energy conservation -- Periodicals; Energy conversion -- Periodicals; 621.042
• DOI: 10.1016/j.apenergy.2017.07.041
• Languages: English
• ISSNs: 0306-2619

Abstract

Highlights: Modular sorption and resorption thermal cell are analyzed for cold and heat cogeneration. Composite sorbents are developed with ENG-TSA for heat and mass transfer enhancement. Sorption quantities of different working pairs range from 0.169 kg kg −1 to 0.499 kg kg −1 . Resorption thermal cell has great potentials for waste heat and renewable energy utilization. Abstract: Innovative modular sorption and resorption thermal cell are presented for cold and heat cogeneration. Expanded natural graphite treated with sulfuric acid is selected in the development of composite sorbents for improved heat and mass transfer performance. It is indicated that thermal conductivity and permeability range from 11.9 W m −1 K −1 to 36.5 W m −1 K −1 and from 1.04 × 10 −14 m 2 to 8.02 × 10 −11 m 2 . Sorption characteristics of composite sorbents are also investigated. Results demonstrate that MnCl2 -CaCl2 -NH3 reveals the best sorption performance under the condition of 130–150 °C heat source temperature and −20 °C to 5 °C evaporation temperature. Sorption quantities of sorption and resorption working pairs range from 0.169 kg kg −1 to 0.499 kg kg −1 . Based on testing results, energy density and power density of modular resorption thermal cell are compared with that of sorption thermal cell. Results indicate that heat density ranges from 580 kJ kg −1 to 1368 kJ kg −1 whereas cold density ranges from 400 kJ kg −1 to 1134 kJ kg −1 . Simultaneously, heat and cold power density range from 322 W kg −1 to 1502 W kg −1 and from 222 W kg −1 to 946 W kg −1 . Both sorption and resorption thermal cell have their own advantages, which are flexible connected for scaling applications.