4.7 Article

Life cycle techno-enviro-economic assessment of dual-temperature evaporation transcritical CO2 high-temperature heat pump systems for industrial waste heat recovery

Related references

Note: Only part of the references are listed.
Article Thermodynamics

Energy, exergy, and environmental (3E) analysis of a compound ejector-heat pump with low GWP refrigerants for simultaneous data center cooling and district heating

Ali Khalid Shaker Al-Sayyab et al.

Summary: This study evaluated a novel compound PV/T waste heat driven ejector-heat pump system for data center cooling and waste heat recovery. Results showed remarkable overall performance enhancement for all investigated refrigerants, with R515B exhibiting the most pronounced improvement.

INTERNATIONAL JOURNAL OF REFRIGERATION (2022)

Article Thermodynamics

Performance analysis of an ejector-assisted two-stage evaporation single-stage vapor-compression cycle

Xiang Cao et al.

Summary: A two-stage evaporation cycle with a common single-stage compressor is proposed for actual vapor-compression refrigeration or heat pump systems. The cycle uses an ejector to lift the lower evaporation pressure, improving the coefficient of performance (COP). Numerical results show that the novel cycle outperforms other cycles under rated operating conditions, with a 12.1% higher COP than the ejector cycle, 6.9% higher than the two-stage evaporation cycle, and 22.0% higher than the basic refrigeration cycle.

APPLIED THERMAL ENGINEERING (2022)

Article Thermodynamics

Transcritical carbon dioxide heat pump cycle: Validation and comparison of one-dimensional models of ejector with independent data sets

Cong You et al.

Summary: The study utilized two 1-D homogeneous equilibrium models to analyze the ejector expansion transcritical CO2 heat pump cycle, showing that the compressor's isentropic efficiency has a greater impact on system performance. The models exhibited deviations in predicting certain parameters, which can be minimized through data post-processing methods for calibration.

APPLIED THERMAL ENGINEERING (2022)

Review Green & Sustainable Science & Technology

A review and perspective on industry high-temperature heat pumps

Jiatong Jiang et al.

Summary: This study proposes future development directions for High-temperature Heat Pumps (HTHPs) based on laboratory-scale research and application cases. The study emphasizes the use of low Global Warming Potential (GWP) refrigerants in laboratory research, while high-GWP refrigerants are dominant in applications. The suggested prospects for future development include the use of low-GWP refrigerants, higher output temperatures, larger heating capacities, and higher Coefficients of Potential (COP).

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2022)

Review Energy & Fuels

Advanced development and application of transcritical CO2 refrigeration and heat pump technology-A review

Yulong Song et al.

Summary: This article introduces the important advantages of transcritical CO2 technology in terms of energy, environment, and carbon neutrality, and summarizes the problems and development trends in its application in different fields.

ENERGY REPORTS (2022)

Article Thermodynamics

A novel dual-temperature ejector-compression heat pump cycle-exergetic and economic analyses

Jian Liu et al.

Summary: The study focuses on the performance of a dual-temperature ejector-compression air-source heat-pump system. The enhanced DAHP-II performs significantly better than DAHP-I, with R290 identified as the most suitable refrigerant.

INTERNATIONAL JOURNAL OF REFRIGERATION (2021)

Article Thermodynamics

Thermodynamic analysis of the optimal operating conditions for a two-stage CO2 refrigeration unit in warm climates with and without ejector

Jose Antonio Exposito-Carrillo et al.

Summary: The paper presents the challenges and solutions for implementing the natural refrigerant R744 in the food retail industry, highlighting the technical difficulties of operating in warm climates and the consequent COP reduction. Different approaches, including the use of parallel compressors and ejector expansion devices, have been proposed to overcome these challenges. Optimization methodologies for the operation conditions of a two-stage CO2 refrigeration unit have been developed and compared, showing improvements in COP and limitations when using ejectors.

APPLIED THERMAL ENGINEERING (2021)

Article Thermodynamics

Performance prediction of HFC, HC, HFO and HCFO working fluids for high temperature water source heat pumps

Han Yan et al.

Summary: A new performance prediction model for heat pump working fluids was proposed in this paper, aiming to provide a quick and easy way to screen a large number of working fluids for HTWSHP. The model showed good agreement with calculated values for specific volumetric heating capacity and coefficient of performance, and could be applied to different conditions such as varying compressor isentropic efficiencies and temperatures.

APPLIED THERMAL ENGINEERING (2021)

Article Thermodynamics

Performance evaluation and multi-objective optimization of a low-temperature CO2 heat pump water heater based on artificial neural network and new economic analysis

Yingjie Xu et al.

Summary: By optimizing CO2 air source heat pump water heater, considering energy and economic parameters, the results show advantages in both energy and economy, with rarely considered factors taken into account.

ENERGY (2021)

Article Thermodynamics

Advanced high temperature heat pump configurations using low GWP refrigerants for industrial waste heat recovery: A comprehensive study

Carlos Mateu-Royo et al.

Summary: This study compares different high temperature heat pump (HTHP) cycle configurations and low global warming potential (GWP) refrigerants, showing that two-stage cascade is suitable for high temperature lifts while single-stage cycles with economizer and parallel compression are suitable for low temperature lifts.

ENERGY CONVERSION AND MANAGEMENT (2021)

Article Energy & Fuels

An air-source hybrid absorption-compression heat pump with large temperature lift

J. T. Gao et al.

Summary: In this study, a novel air-source hybrid absorption-compression heat pump is proposed to achieve a large temperature lift and relatively good thermodynamic efficiency. Heat recovery between the two sub-cycles is achieved to reduce the heat exchange capacity with air, saving air-liquid heat exchanger area and cost.Overall, the proposed system provides a feasible and efficient way to upgrade ambient heat for industrial uses with different capacities.

APPLIED ENERGY (2021)

Article Thermodynamics

Two-phase ejector enhanced carbon dioxide transcritical heat pump for cold climate

K. Ameur et al.

Summary: By simulating a CO2 transcritical heat pump cycle integrating a two-phase ejector, adjustments can be made to the ejector geometry based on operating conditions for improved overall efficiency.

ENERGY CONVERSION AND MANAGEMENT (2021)

Review Thermodynamics

Progress in ejector-expansion vapor compression refrigeration and heat pump systems

Zhenying Zhang et al.

ENERGY CONVERSION AND MANAGEMENT (2020)

Article Thermodynamics

High temperature heat pump integration into district heating network

Carlos Mateu-Royo et al.

ENERGY CONVERSION AND MANAGEMENT (2020)

Article Instruments & Instrumentation

Performance Analysis of High-temperature Two-stage Compression Heat Pump with Vapor Injection Dynamic Control

Win-Jet Luo et al.

SENSORS AND MATERIALS (2020)

Article Thermodynamics

Analysis of a hybrid transcritical CO2 vapor compression and vapor ejector refrigeration system

Kundan Kumar et al.

APPLIED THERMAL ENGINEERING (2020)

Review Energy & Fuels

A comprehensive review of ejector design, performance, and applications

Bourhan M. Tashtoush et al.

APPLIED ENERGY (2019)

Article Thermodynamics

Performance of a new two-stage transcritical CO2 refrigeration cycle with two ejectors

F. Eskandari Manjili et al.

APPLIED THERMAL ENGINEERING (2019)

Article Thermodynamics

Effects of using expander and internal heat exchanger on carbon dioxide direct-expansion geothermal heat pump

Hossein Ghazizade-Ahsaee et al.

APPLIED THERMAL ENGINEERING (2018)

Article Green & Sustainable Science & Technology

Performance simulation and exergy analysis of a hybrid source heat pump system with low GWP refrigerants

Di Wu et al.

RENEWABLE ENERGY (2018)

Article Thermodynamics

Comprehensive experimental study on a transcritical CO2 ejector-expansion refrigeration system

Yinhai Zhu et al.

ENERGY CONVERSION AND MANAGEMENT (2017)

Article Thermodynamics

Dynamic simulation of an improved transcritical CO2 ejector expansion refrigeration cycle

Lixing Zheng et al.

ENERGY CONVERSION AND MANAGEMENT (2016)

Article Thermodynamics

Advanced exergy analyses of an ejector expansion transcritical CO2 refrigeration system

Tao Bai et al.

ENERGY CONVERSION AND MANAGEMENT (2016)

Article Thermodynamics

Water-side reversible CO2 heat pump for residential application

Silvia Minetto et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2016)

Article Thermodynamics

Energy and environmental performance assessment of R744 booster supermarket refrigeration systems operating in warm climates

Paride Gullo et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2016)

Article Energy & Fuels

Conventional and advanced exergy analysis of an ejector refrigeration system

Jianyong Chen et al.

APPLIED ENERGY (2015)

Article Thermodynamics

Effects of lubricating oil on thermal performance of water-cooled carbon dioxide gas cooler

Baomin Dai et al.

APPLIED THERMAL ENGINEERING (2015)

Article Thermodynamics

Thermodynamic analyses on an ejector enhanced CO2 transcritical heat pump cycle with vapor-injection

Tao Bai et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2015)

Article Thermodynamics

Exergoeconomic analysis of carbon dioxide transcritical refrigeration machines

Farivar Fazelpour et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2014)

Article Thermodynamics

Study of ejector efficiencies in refrigeration cycles

Fang Liu et al.

APPLIED THERMAL ENGINEERING (2013)

Article Thermodynamics

Theoretical and experimental analysis of a CO2 heat pump for domestic hot water

Silvia Minetto

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2011)

Review Green & Sustainable Science & Technology

Progress of mathematical modeling on ejectors

S. He et al.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2009)

Article Thermodynamics

Experimental validation of a prototype ejector designed to reduce throttling losses encountered in transcritical R744 system operation

Stefan Elbel et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2008)

Article Thermodynamics

Particular characteristics of transcritical CO2 refrigeration cycle with an ejector

Jian-qiang Deng et al.

APPLIED THERMAL ENGINEERING (2007)

Article Thermodynamics

Optimization of two-stage transcritical carbon dioxide heat pump cycles

Neeraj Agrawal et al.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2007)

Article Thermodynamics

Transcritical CO2 refrigeration cycle with ejector-expansion device

DQ Li et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2005)