Dynamic Simulation of Load-Responsive Vapor Compression Refrigeration Systems

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Notice

nThis is an unedited manuscript accepted for publication and provided as an Article in Press for early access at the author’s request. The article will undergo copyediting, typesetting, and galley proof review before final publication. Please be aware that errors may be identified during production that could affect the content. All legal disclaimers of the journal apply.n

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Year : 2025 [if 2224 equals=””]30/09/2025 at 3:53 PM[/if 2224] | [if 1553 equals=””] Volume : 12 [else] Volume : 12[/if 1553] | [if 424 equals=”Regular Issue”]Issue : [/if 424][if 424 equals=”Special Issue”]Special Issue[/if 424] [if 424 equals=”Conference”][/if 424] 02 | Page : 32 37

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    Amit Shishodia,

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  1. Student, Department of Mechanical Engineering, Noida International University, Uttar Pradesh, India

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Abstract

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nBecause of their dependable operation and effectiveness, vapor compression refrigeration systems, or vapor compression refrigeration (VCRS), have become popular in commercial, industrial, and residential settings. However, under different thermal loads, classic vapor compression refrigeration (VCR) systems may perform less well in that they are usually built for steady-state conditions and run at consistent speeds. In order to improve a load-responsive VCR system’s flexibility, energy efficiency, and response to changing cooling demands, this study focuses on the dynamical modeling of the system. In order to simulate the dynamics of the system in real time under various load situations, a detailed dynamic model of a single-stage compression vapor cycle was created in this work using MATLAB/Simulink. In addition to dynamic representations of refrigerant qualities, mass flow rates, and heat transfer characteristics, the model includes essential parts involving a thermostatic expansion valve, condenser, evaporator, and variable-speed compressor. In order to adjust compressor speed in response to real-time cooling load needs, a proportional integral derivative (PID) controller was implemented. According to simulation data, the capacity-responsive VCR system performs noticeably better than fixed-speed systems, particularly when there is a partial load. Under dynamic load profiles, the system produced up to 18% energy savings, decreased compressor cycling, and maintained a more consistent evaporator temperature. Furthermore, greater use of compression work and less irreversibility in heat exchange mechanisms led to increased second law efficiency, according to energy analysis. The results highlight how dynamic simulation may be a useful tool for improving component selection and control techniques in current refrigeration system designs. This research enables the creation of intelligent, demand-adaptive cooling systems for environmentally friendly power applications in addition to advancing energy-efficient Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) technology. Alternative refrigerants and hybrid system topologies will be explored and experimentally validated in future studies.nn

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Keywords: Vapor compression refrigeration (VCRS), proportional integrated derivative, coefficient of performance (COP), compressor cycling frequency, expansion valve

n[if 424 equals=”Regular Issue”][This article belongs to Journal of Refrigeration, Air conditioning, Heating and ventilation ]

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[/if 424][if 424 equals=”Special Issue”][This article belongs to Special Issue under section in Journal of Refrigeration, Air conditioning, Heating and ventilation (jorachv)][/if 424][if 424 equals=”Conference”]This article belongs to Conference [/if 424]

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How to cite this article:
nAmit Shishodia. [if 2584 equals=”][226 wpautop=0 striphtml=1][else]Dynamic Simulation of Load-Responsive Vapor Compression Refrigeration Systems[/if 2584]. Journal of Refrigeration, Air conditioning, Heating and ventilation. 08/08/2025; 12(02):32-37.

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How to cite this URL:
nAmit Shishodia. [if 2584 equals=”][226 striphtml=1][else]Dynamic Simulation of Load-Responsive Vapor Compression Refrigeration Systems[/if 2584]. Journal of Refrigeration, Air conditioning, Heating and ventilation. 08/08/2025; 12(02):32-37. Available from: https://journals.stmjournals.com/jorachv/article=08/08/2025/view=0

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[if 424 not_equal=””]Regular Issue[else]Published[/if 424] Subscription Original Research

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Volume 12
[if 424 equals=”Regular Issue”]Issue[/if 424][if 424 equals=”Special Issue”]Special Issue[/if 424] [if 424 equals=”Conference”][/if 424] 02
Received 26/07/2025
Accepted 01/08/2025
Published 08/08/2025
Retracted
Publication Time 13 Days

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