4.7 Article

Comparative study of geothermal and conventional air conditioner: A case of study for office applications

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Thermodynamics

Performance improvement of solar-assisted ground-source heat pumps with parallelly connected heat sources in heating-dominated areas

Minwoo Lee et al.

Summary: This study analyzed the heating performance of SGSHPs with serial and parallel configurations in a heating-dominated building, finding that the serial configuration can improve ground temperature and solar collector efficiency, while the parallel configuration can reduce energy consumption and initial costs.

ENERGY (2022)

Article Thermodynamics

Experimental evaluation of R32, R452B and R454B as alternative refrigerants for R410A in a refrigeration system

Victor Hugo Panato et al.

Summary: This study presents an experimental analysis of alternative fluids for R410A, aiming to reduce the environmental impact. The results show that although the alternative fluids have lower energy efficiency compared to R410A, they have a lower environmental impact due to their lower Global Warming Potential (GWP).

INTERNATIONAL JOURNAL OF REFRIGERATION (2022)

Article Thermodynamics

Energy targeting approach for optimum solar assisted ground source heat pump integration in buildings

Seyed Mojtaba Hosseinnia et al.

Summary: The application of solar assisted ground source heat pumps in buildings has increased in recent years, but there is still a lack of a systematic approach to integrate the optimum system. This study proposes a novel dynamic targeting approach that predicts and guarantees the maximum possible heat recovery by introducing an interconnected network of heat exchangers, energy storage, heat pump, and solar photovoltaic panels based on real-time data.

ENERGY (2022)

Article Thermodynamics

A case study of thermal analysis of a solar assisted absorption air-conditioning system using R-410A for domestic applications

Areeba Rahman et al.

Summary: This study focuses on designing, modeling, and simulating an absorption solar air-conditioning system, optimizing key performance parameters for efficiency. Simulation results show that, under Lahore, Pakistan's climate conditions, the system has good performance in meeting air-conditioning demand.

CASE STUDIES IN THERMAL ENGINEERING (2021)

Article Thermodynamics

Energetic, Exergetic, Environmental, and Economic Assessment of a Cascade Refrigeration System Operating with Four Different Ecological Refrigerant Pairs

Cleison Henrique de Paula et al.

Summary: By comparing the energetic, exergetic, environmental, and economic performance of the cascade refrigeration system, it was found that the combination of R744/R717 exhibited the best performance, with the highest values in various performance parameters.

INTERNATIONAL JOURNAL OF AIR-CONDITIONING AND REFRIGERATION (2021)

Article Engineering, Multidisciplinary

Structural optimization of collector/evaporator of direct-expansion solar/air-assisted heat pump

Kunru Ma et al.

Summary: The study optimized the structure and material of the collector/evaporator in the DX-SASIHP system using the CFD method to improve heating performance, identifying the best parameter combination.

ALEXANDRIA ENGINEERING JOURNAL (2021)

Article Energy & Fuels

Analysis of thermal performance and economy of ground source heat pump system: a case study of the large building

Jingyang Han et al.

Summary: The study shows that ground source heat pump systems in large buildings have high efficiency and energy saving benefits, while solar energy coupled ground source heat pump systems are more economical in the early years of operation and GSHP becomes more economical after a certain period of time. The economic efficiency of the SGSHP system in large buildings will be reduced with the increase of ground heat exchanger spacing.

GEOTHERMICS (2021)

Article Thermodynamics

Experimental performance analysis of a CO2 direct-expansion solar assisted heat pump water heater

Willian M. Duarte et al.

Summary: This study presents an experimental analysis of the influence of environmental conditions in a small size DX-SAHP operating with CO2 as refrigeration fluid to heat water. The results show that the water inlet temperature, solar radiation flux, and relative humidity significantly affect the performance of the system.

INTERNATIONAL JOURNAL OF REFRIGERATION (2021)

Article Thermodynamics

Feasibility of solar-geothermal hybrid source heat pump for producing domestic hot water in hot climates

Willian M. Duarte et al.

Summary: This study demonstrates the feasibility of using Solar Geothermal Hybrid Source Heat Pump systems to produce domestic hot water in Brazilian-type climates, with better performance compared to other heat pump configurations. Case studies in different cities in Brazil showed that the best economic return can be achieved using Ground-Source Heat Pump systems.

INTERNATIONAL JOURNAL OF REFRIGERATION (2021)

Article Energy & Fuels

Experimental study and simulation model of a direct expansion solar assisted heat pump to CO2 for water heating: Inventory, coefficient of performance and total equivalent warming impact

Gleberson Marques Humia et al.

Summary: This study investigates the refrigerant charge inventory in a CO2 Direct Expansion Solar Assisted Heat Pump for heating residential water. The model developed shows that changes in solar irradiation levels significantly impact the refrigerant mass amount, and the correlations of Hughmark and Filimonov have the best predictive accuracy. Additionally, an increase in solar irradiation leads to improved COP and reduced TEWI.

SOLAR ENERGY (2021)

Article Green & Sustainable Science & Technology

Dynamic Model of a Transcritical CO2 Heat Pump for Residential Water Heating

Helio A. G. Diniz et al.

Summary: This paper presents a distributed mathematical model for a carbon dioxide direct expansion solar-assisted heat pump used to heat bath water. The model was validated using experimental data and revealed important findings, such as a reduction in water mass flow rate resulting in an increase in water outlet temperature.

SUSTAINABILITY (2021)

Article Thermodynamics

PDSim: A general quasi-steady modeling approach for positive displacement compressors and expanders

Ian H. Bell et al.

INTERNATIONAL JOURNAL OF REFRIGERATION (2020)

Article Construction & Building Technology

Experimental characterization of a transcritical CO2 direct expansion ground source heat pump for heating applications

Arash Bastani et al.

ENERGY AND BUILDINGS (2020)

Article Green & Sustainable Science & Technology

Analysis and optimization of the design parameters of a district groundwater heat pump system in Turin, Italy

Cristina Saez Blazquez et al.

RENEWABLE ENERGY (2020)

Article Construction & Building Technology

Effects of seasonal variations on the thermal response of energy piles in an unsaturated Brazilian tropical soil

Thaise da Silva Oliveira Morais et al.

ENERGY AND BUILDINGS (2020)

Article Thermodynamics

Thermo-economic and environmental analysis of a small capacity vapor compression refrigeration system using R290, R1234yf, and R600a

Cleison Henrique de Paula et al.

INTERNATIONAL JOURNAL OF REFRIGERATION (2020)

Article Green & Sustainable Science & Technology

Recent advances and development in optimal design and control of ground source heat pump systems

Zhenjun Ma et al.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2020)

Article Thermodynamics

Modeling and experimental analysis of the solar radiation in a CO2 direct-expansion solar-assisted heat pump

Tiago de Freitas Paulino et al.

APPLIED THERMAL ENGINEERING (2019)

Article Thermodynamics

Nonisentropic Phenomenological Model of a Reciprocating Compressor

Willian Moreira Duarte et al.

INTERNATIONAL JOURNAL OF AIR-CONDITIONING AND REFRIGERATION (2019)

Article Construction & Building Technology

Investigation on the optimal cooling tower input capacity of a cooling tower assisted ground source heat pump system

Xuemei Gong et al.

ENERGY AND BUILDINGS (2018)

Article Thermodynamics

Comparison of transient response of an evaporator model for water refrigeration system working with R1234yf as a drop-in replacement for R134a

Juan Garcia et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2018)

Article Construction & Building Technology

A transient model for the thermal inertia of chilled-water systems during demand response

Weilin Li et al.

ENERGY AND BUILDINGS (2017)

Article Thermodynamics

Low-temperature solar-plate-assisted heat pump: A developed design for domestic applications in cold climate

Elamin Mohamed et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2017)

Article Thermodynamics

Modeling evaluation of a direct-expansion solar-assisted heat pump water heater using R410A

X. Q. Kong et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2017)

Article Thermodynamics

Unified correlation for heat transfer during boiling in plain mini/micro and conventional channels

Mirza M. Shah

INTERNATIONAL JOURNAL OF REFRIGERATION (2017)

Article Thermodynamics

Comprehensive correlations for heat transfer during condensation in conventional and mini/micro channels in all orientations

Mirza M. Shah

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

Article Construction & Building Technology

Life cycle assessment and economic analysis of residential air conditioning in Saudi Arabia

Kamel Almutairi et al.

ENERGY AND BUILDINGS (2015)

Article Green & Sustainable Science & Technology

Heating and cooling performance characterisation of ground source heat pump system by testing and TRNSYS simulation

Amir A. Safa et al.

RENEWABLE ENERGY (2015)

Review Construction & Building Technology

General review of ground-source heat pump systems for heating and cooling of buildings

Ioan Sarbu et al.

ENERGY AND BUILDINGS (2014)

Article Thermodynamics

Solar-assisted heat pump - A sustainable system for low-temperature water heating applications

S. K. Chaturvedi et al.

ENERGY CONVERSION AND MANAGEMENT (2014)

Article Engineering, Chemical

Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp

Ian H. Bell et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2014)

Article Construction & Building Technology

Feasibility of combined solar thermal and ground source heat pump systems in cold climate, Canada

Farzin M. Rad et al.

ENERGY AND BUILDINGS (2013)

Article Thermodynamics

Review of correlations of flow boiling heat transfer coefficients for carbon dioxide

Xiande Fang et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2013)

Article Energy & Fuels

Cooling dominated Hybrid Ground Source Heat Pump System application

Z. Sagia et al.

APPLIED ENERGY (2012)

Article Construction & Building Technology

Dual source heat pump systems: Operation and performance

Renato M. Lazzarin

ENERGY AND BUILDINGS (2012)

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)

Article Thermodynamics

Experimental investigation of the cooling performance of a ground source heat pump system in Denizli, Turkey

Rasim Karabacak et al.

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

Article Energy & Fuels

Feasibility of using ground-coupled condensers in A/C systems

Syed Ahmad M. Said et al.

GEOTHERMICS (2010)

Article Computer Science, Interdisciplinary Applications

Optimal operation of simple refrigeration cycles. Part I: Degrees of freedom and optimality of sub-cooling

Jorgen Bauck Jensen et al.

COMPUTERS & CHEMICAL ENGINEERING (2007)

Article Geochemistry & Geophysics

Numerical and functional representations of regional heat flow in South America

VM Hamza et al.

PHYSICS OF THE EARTH AND PLANETARY INTERIORS (2005)

Article Energy & Fuels

Performance analysis of a solar-assisted heat pump water heater

JP Chyng et al.

SOLAR ENERGY (2003)