Transcritical carbon dioxide heat pump systems: A review

BT Austin, K Sumathy - Renewable and sustainable energy reviews, 2011 - Elsevier
Carbon dioxide is a safe, economic and environmentally sustainable refrigerant which can
be used in heat pump and refrigeration systems. Research into the performance and …

Recent Advances in Transcritical CO2 (R744) Heat Pump System: A Review

RU Rony, H Yang, S Krishnan, J Song - Energies, 2019 - mdpi.com
Heat pump (HP) is one of the most energy efficient tools for address heating and possibly
cooling needs in buildings. Growing environmental concerns over conventional HP …

Experimental investigation on performance of transcritical CO2 heat pump system with ejector under optimum high-side pressure

XX Xu, GM Chen, LM Tang, ZJ Zhu - Energy, 2012 - Elsevier
Since the fixed ejector cannot adjust the optimum high-side pressure, the adjustable ejector
is designed and built based on a transcritical CO2 heat pump system model results. The …

Advancements in dynamic simulation techniques for refrigeration cycles: A comprehensive review

AA Murthy, KP Shenoy, G Krishan, IS Patil… - Energy 360, 2024 - Elsevier
This work thoroughly analyses the developments in dynamic modelling for vapor
compression refrigeration (VCR)/heat pump (HP) systems described in the open literature. In …

A comparative analysis of the performance of backfill heat exchangers in deep mine geological environments

B Zhang, R Zhan, L Liu, C Huan, Y Zhao… - Applied Thermal …, 2024 - Elsevier
With the increase of mineral mining depth, the technologies of constructing heat exchanger
in stopes to exploit geothermal resources from deep mines have received great attention …

Experimental study on the performance of CO2 residential air-conditioning system with an internal heat exchanger

YB Tao, YL He, WQ Tao, ZG Wu - Energy Conversion and Management, 2010 - Elsevier
The experimental system for the transcritical CO2 residential air-conditioning with an internal
heat exchanger was built and the effects of working conditions on the system coefficient of …

Flow of refrigerants through capillary tubes: A state-of-the-art

SK Dubba, R Kumar - Experimental thermal and fluid science, 2017 - Elsevier
A review of the research carried out during past decade on flow of different refrigerants
through adiabatic and diabatic capillary tubes of different geometries viz. straight and coiled …

Theoretical analysis and experimental research on transcritical CO2 two stage compression cycle with two gas coolers (TSCC+ TG) and the cycle with intercooler …

H Wang, Y Ma, J Tian, M Li - Energy conversion and Management, 2011 - Elsevier
As one of the natural refrigerants, CO 2 is a potential substitute for synthesized refrigerants
with favorable environmental properties. In order to improve the performance of the CO 2 …

Study on the influence of a single fracture on the performance of backfill heat exchangers in underground stopes

B Zhang, W Zhang, R Zhan, L Liu, C Huan, Y Zhao… - Geothermics, 2024 - Elsevier
Thermal hazards in deep mines can be mined synergistically with the deposit as associated
geothermal energy resources. Backfill heat exchangers (BFHEs) as a combination of mine …

[HTML][HTML] Impact of suction line on evaporator effectiveness in refrigeration cycle

SS Farhan, TK Salem, MN Ismael, TK Ibrahim - Case Studies in Thermal …, 2021 - Elsevier
The effect of suction line on the evaporator performance with the using of R-134a has been
investigated experimentally. Three types of suction lines (lateral, concentric, coil) have been …