Suggested solution concentration for an energy-efficient refrigeration system combined with condensation heat-driven liquid desiccant cycle |
| |
| Affiliation: | 1. School of Energy and Environment, Southeast University, Nanjing 210096, China;2. Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, Southeast University, Nanjing 210096, China;3. Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology, Southeast University, Nanjing 210096, China;1. Department of Food Engineering, URI – Campus de Erechim, Av. Sete de Setembro, 1621, Erechim, RS 99700-000, Brazil;2. Department of Chemical and Food Engineering, Federal University of Santa Catarina, Florianópolis, CEP 88800-000 Florianópolis, SC, Brazil;3. LASEFI/DEA/FEA (School of Food Engineering)/UNICAMP (University of Campinas), Rua Monteiro Lobato, 80, 13083-862 Campinas, SP, Brazil;4. Federal University of Fronteira Sul, Erechim, Av. Dom João Hoffmann, Erechim 99700-000, Brazil;5. Department of Chemical Engineering, Federal University of Santa Maria, Av. Roraima, 1000, Santa Maria, RS 97105-900, Brazil;1. Department of Civil Engineering, East China Jiaotong University, No.808 Shuanggang St., Nanchang 330013, PR China;2. Department of Civil Engineering, Shanghai University, No.149 Yanchang Rd., Shanghai 200072, PR China;3. School of Civil Engineering, Qingdao Technological University, No. 11 Fushun Rd., Qingdao 266520, PR China;1. Universidad de Castilla-La Mancha, Instituto de Ciencias Ambientales, Toledo, Spain;2. Universidad de Castilla-La Mancha, Facultad de Ciencias Ambientales y Bioquímica, Toledo, Spain;3. Universidade de Lisboa, Instituto Dom Luiz (IDL), Lisboa, Portugal;1. The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Zheda Rd. 38, 310027 Hangzhou, PR China;2. The State Key Laboratory of Wind Power System, 310012 Hangzhou, PR China |
| |
| Abstract: | This paper presents a hybrid energy-efficient refrigeration system enhanced by liquid desiccant evaporative cooling technology for subcooling the refrigerant, where the liquid desiccant cycle is driven by the exhausted heat from the condenser and three commonly used liquid desiccants: LiCl, LiBr and CaCl2 aqueous solutions are considered here. The solution concentration for the proposed hybrid energy-efficient refrigeration system should be determined and optimized carefully for better performance. Sensitive study of solution concentration involved in the hybrid system is conducted at different condensation temperature. The results indicates that under standard working condition (i.e., condensing temperature is 50 °C), the optimum solution concentration is 0.31 for LiCl aqueous solution, 0.45 for LiBr aqueous solution and 0.42 for CaCl2 aqueous solution, while the maximum COPs are nearly same. When the condensing temperature is 45 °C, the optimum solution concentration should be set at 0.27 for LiCl aqueous solution, and 0.41 for LiBr aqueous solution and 0.37 for CaCl2 aqueous solution, while condensing temperature is 55 °C, it is 0.35 for LiCl aqueous solution, 0.49 for LiBr aqueous solution and 0.45 for CaCl2 aqueous solution. The simple fitting formulas are obtained, and performance improvement potential is discussed. |
| |
| Keywords: | Refrigeration Liquid desiccant Exhausted heat utilization Solution concentration Performance improvement |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
