TY - JOUR
T1 - Thermodynamic analysis of a novel sodium hydroxide-water solution absorption refrigeration, heating and power system for low-temperature heat sources
AU - Zhang, Zhaoli
AU - Alelyani, Sami M.
AU - Zhang, Nan
AU - Zeng, Chao
AU - Yuan, Yanping
AU - Phelan, Patrick
N1 - Funding Information:
This work was supported by the Sichuan Province Youth Science and Technology Innovation Team of Building Environment and Energy Efficiency (2015TD0015), National Postdoctoral Program for Innovative Talents (BX201600148) and the 2015 Cultivation Program for the Excellent Doctoral Dissertation of Southwest Jiaotong University. The first author would also like to acknowledge the Chinese scholarship council (CSC) foundation for providing him with financial support to study abroad.
Funding Information:
This work was supported by the Sichuan Province Youth Science and Technology Innovation Team of Building Environment and Energy Efficiency ( 2015TD0015 ), National Postdoctoral Program for Innovative Talents ( BX201600148 ) and the 2015 Cultivation Program for the Excellent Doctoral Dissertation of Southwest Jiaotong University . The first author would also like to acknowledge the Chinese scholarship council (CSC) foundation for providing him with financial support to study abroad.
PY - 2018/7/15
Y1 - 2018/7/15
N2 - A novel sodium hydroxide-water solution absorption refrigeration, heating and organic Rankine cycle power system is proposed for low-temperature heat source utilization. The sodium hydroxide-water solution absorption refrigeration is employed as top cycle which directly absorbs heat from low-temperature heat source. While R218 organic Rankine cycle and heating subsystem are adopted to produce power and heating as designed in bottom cycles. Under the considered condition, model results indicate that refrigeration, heating and electricity efficiency are 0.8244, 0.4019 and 0.03437 with the capacity of 945.2, 460.8 and 39.41 kW, respectively. Energy and exergy efficiency of refrigeration, heating and electricity are also theoretically analyzed with various condensation temperature, evaporation temperature, turbine inlet pressure, split ratio and mass fraction of rich sodium hydroxide solution. Sensitivity of parameters to system performance is also analyzed and results indicate that energy and exergy efficiency are remarkably influenced by operating parameters. A comparison between the proposed system and three independent electrical refrigeration, heating and power systems shows that the proposed system has superior performance and the maximum primary energy saving ratio can reach approximately 0.4889. In conclusion, with the multi-productions of refrigeration, heating and electricity, the proposed polygeneration system provides a more rational and effective energy utilization from a single low temperature heat source at suitable level.
AB - A novel sodium hydroxide-water solution absorption refrigeration, heating and organic Rankine cycle power system is proposed for low-temperature heat source utilization. The sodium hydroxide-water solution absorption refrigeration is employed as top cycle which directly absorbs heat from low-temperature heat source. While R218 organic Rankine cycle and heating subsystem are adopted to produce power and heating as designed in bottom cycles. Under the considered condition, model results indicate that refrigeration, heating and electricity efficiency are 0.8244, 0.4019 and 0.03437 with the capacity of 945.2, 460.8 and 39.41 kW, respectively. Energy and exergy efficiency of refrigeration, heating and electricity are also theoretically analyzed with various condensation temperature, evaporation temperature, turbine inlet pressure, split ratio and mass fraction of rich sodium hydroxide solution. Sensitivity of parameters to system performance is also analyzed and results indicate that energy and exergy efficiency are remarkably influenced by operating parameters. A comparison between the proposed system and three independent electrical refrigeration, heating and power systems shows that the proposed system has superior performance and the maximum primary energy saving ratio can reach approximately 0.4889. In conclusion, with the multi-productions of refrigeration, heating and electricity, the proposed polygeneration system provides a more rational and effective energy utilization from a single low temperature heat source at suitable level.
KW - Absorption refrigeration
KW - Low-temperature heat source
KW - Organic Rankine cycle
KW - Sodium hydroxide-water solution
KW - Thermodynamic analysis
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U2 - 10.1016/j.apenergy.2018.04.008
DO - 10.1016/j.apenergy.2018.04.008
M3 - Article
AN - SCOPUS:85044940294
SN - 0306-2619
VL - 222
SP - 1
EP - 12
JO - Applied Energy
JF - Applied Energy
ER -