Experimental studies on transcritical CO<sub>2</sub> heat pump system for simultaneous water cooling and heating application

Date, Abhijit; Patil, Omprakash; Shet, Shrikant A; Agrawal, Neeraj

doi:10.1080/15435075.2021.1941045

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…In addition, they made calculations on how the decrease in the amount of refrigerant could reduce the performance of the system [13]. Date et al, In their study, they presented studies on optimum system pressure values and refrigerant amounts in the system using EEV [14]. Jadhav and Agrawal, Thermodynamic analyses of an adiabatic spiral and a helical capillary tube in a CO2 transcritical system were performed with the subcritical R22 fluid.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of a transcritical heat pump system with CO2 refrigerant

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Özgür

et al. 2022

International Advanced Researches and Engineering Journal

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Today, it is seen that increasing environmental pollution is getting ahead of the increasing energy need. Therefore, more environmentally friendly and more economical refrigerants are needed. In this context, carbon dioxide appears as a natural refrigerant in cooling systems and heat pump (HP) systems, and it has been widely used in recent years. In this study, a single-stage heat pump system with a CO2 refrigerant, with a transcritical cycle, has been experimentally studied. The system is designed as a water-to-water heat pump. The performance of the system has been determined experimentally. In the system, capillary pipes with a diameter of 2.00 mm and two different lengths are used. It is aimed to create different evaporation pressures with two capillary tubes. The first capillary tube is 2.40 m long and the second is 1.20 m long. Gas cooler pressures, gas cooler and evaporator cooling water mass flow rates were kept the same for both cases. A certain gas charge was made and measurements were made for both cases. Thermodynamic analysis and comparison of the system were made. In the short capillary tube system, it was observed that the COPHP value was 7.2% higher, the CO2 mass flow rate increased by 9.1% to achieve the same gas refrigerant pressure value, and the power consumption in the compressor decreased by 1.8%. In addition, the gas cooler outlet temperature, the evaporator outlet temperature and the change in ambient temperatures, as well as the exergetic destruction and exergetic efficiencies in the system and system components are presented in figures with EES.

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Section: Introductionmentioning

confidence: 99%

Experimental analysis of a transcritical heat pump system with CO2 refrigerant

ELBİR

Bayrakçı

Özgür

et al. 2022

International Advanced Researches and Engineering Journal

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The optimum discharge pressure of CO ₂ -based refrigeration cycles operating under subcritical and transcritical conditions

Sharma

Hazarika

Mopuri

2023

International Journal of Ambient Energy

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A Comprehensive Study on the Impact of a Honeycomb Gas Cooler on the Performance of Transcritical Co2 Heat Pump System

Wang,

Zhang,

Wang

et al. 2023

Preprint

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Experimental studies on transcritical CO₂ heat pump system for simultaneous water cooling and heating application

Cited by 3 publications

References 21 publications

Experimental analysis of a transcritical heat pump system with CO2 refrigerant

Experimental analysis of a transcritical heat pump system with CO2 refrigerant

The optimum discharge pressure of CO ₂ -based refrigeration cycles operating under subcritical and transcritical conditions

A Comprehensive Study on the Impact of a Honeycomb Gas Cooler on the Performance of Transcritical Co2 Heat Pump System

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Experimental studies on transcritical CO2 heat pump system for simultaneous water cooling and heating application

Cited by 3 publications

References 21 publications

Experimental analysis of a transcritical heat pump system with CO2 refrigerant

Experimental analysis of a transcritical heat pump system with CO2 refrigerant

The optimum discharge pressure of CO 2 -based refrigeration cycles operating under subcritical and transcritical conditions

A Comprehensive Study on the Impact of a Honeycomb Gas Cooler on the Performance of Transcritical Co2 Heat Pump System

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Product

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About

Experimental studies on transcritical CO₂ heat pump system for simultaneous water cooling and heating application

The optimum discharge pressure of CO ₂ -based refrigeration cycles operating under subcritical and transcritical conditions