Comparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energy

To make use of solar energy fully and efficiently, the two improved combined cooling, heating, and power systems (CCHP) are proposed by adding a gas heater and an extraction turbine, based on the transcritical CO2 ejector refrigeration system. A relatively high pressure fluid is extracted by the ex...

Full description

Bibliographic Details
Main Authors: Bai Wanjin, Xu Xiaoxiao
Format: Article
Language:English
Published: VINCA Institute of Nuclear Sciences 2018-01-01
Series:Thermal Science
Subjects:
CO2
Online Access:http://www.doiserbia.nb.rs/img/doi/0354-9836/2018/0354-98361800054B.pdf
id doaj-abe698fb68ff429ab34358bd5ff597fd
record_format Article
spelling doaj-abe698fb68ff429ab34358bd5ff597fd2021-01-02T00:43:18ZengVINCA Institute of Nuclear SciencesThermal Science0354-98362334-71632018-01-0122Suppl. 269370010.2298/TSCI171008054B0354-98361800054BComparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energyBai Wanjin0Xu Xiaoxiao1Chongqing Jiaotong University, School of Mechanical and Automotive Engineering, Chongqing, ChinaChongqing University, Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing, ChinaTo make use of solar energy fully and efficiently, the two improved combined cooling, heating, and power systems (CCHP) are proposed by adding a gas heater and an extraction turbine, based on the transcritical CO2 ejector refrigeration system. A relatively high pressure fluid is extracted by the extraction turbine as a primary stream of ejector to improve the ejector performance. In the meantime, the gas heater absorbs low temperature exhaust heat to increase the extraction turbine’s output work. Comparative studies on the thermal efficiency and exergy efficiency of the two improved systems show they are more efficient alternatives for the transcritical CO2 ejector refrigeration system. The CCHP-B system has relatively broad working condition, higher thermal efficiency and exergy efficiency than that of CCHP-A system.http://www.doiserbia.nb.rs/img/doi/0354-9836/2018/0354-98361800054B.pdfCCHPCO2supercriticalexergy efficiencythermal efficiency
collection DOAJ
language English
format Article
sources DOAJ
author Bai Wanjin
Xu Xiaoxiao
spellingShingle Bai Wanjin
Xu Xiaoxiao
Comparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energy
Thermal Science
CCHP
CO2
supercritical
exergy efficiency
thermal efficiency
author_facet Bai Wanjin
Xu Xiaoxiao
author_sort Bai Wanjin
title Comparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energy
title_short Comparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energy
title_full Comparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energy
title_fullStr Comparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energy
title_full_unstemmed Comparative analyses of two improved CO2 combinated cooling, heating, and power systems driven by solar energy
title_sort comparative analyses of two improved co2 combinated cooling, heating, and power systems driven by solar energy
publisher VINCA Institute of Nuclear Sciences
series Thermal Science
issn 0354-9836
2334-7163
publishDate 2018-01-01
description To make use of solar energy fully and efficiently, the two improved combined cooling, heating, and power systems (CCHP) are proposed by adding a gas heater and an extraction turbine, based on the transcritical CO2 ejector refrigeration system. A relatively high pressure fluid is extracted by the extraction turbine as a primary stream of ejector to improve the ejector performance. In the meantime, the gas heater absorbs low temperature exhaust heat to increase the extraction turbine’s output work. Comparative studies on the thermal efficiency and exergy efficiency of the two improved systems show they are more efficient alternatives for the transcritical CO2 ejector refrigeration system. The CCHP-B system has relatively broad working condition, higher thermal efficiency and exergy efficiency than that of CCHP-A system.
topic CCHP
CO2
supercritical
exergy efficiency
thermal efficiency
url http://www.doiserbia.nb.rs/img/doi/0354-9836/2018/0354-98361800054B.pdf
work_keys_str_mv AT baiwanjin comparativeanalysesoftwoimprovedco2combinatedcoolingheatingandpowersystemsdrivenbysolarenergy
AT xuxiaoxiao comparativeanalysesoftwoimprovedco2combinatedcoolingheatingandpowersystemsdrivenbysolarenergy
_version_ 1724363596818808832