The optimum temperature of single-stages vapor compression refrigeration cycle for Air-Conditioning unit

Ambarita, Himsar; Nasution, Akhyar Hamonangan; Ginting, Sibuk; Sihombing, H V

doi:10.1088/1757-899x/420/1/012038

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Sistem pendingin pada unit cold storage penyimpanan beku milik PT. Dwi Bina Utama menggunakan sistem refigerasi mekanik dengan siklus kompresi uap, hal ini seperti pendapat Ambarita et al, (2018) yang mengatakan bahwa refrigerasi mekanik merupakan yaitu mesin pendingin yang menyirkulasikan bahan pendinginnya menggunakan mesin mekanik. Adapun sistem yang digunakan ditampilkan pada Gambar 1.…”

Section: Hasil Dan Pembahasanunclassified

Pengoperasian Mesin Pendingin Untuk Coldstorage Penyimpanan Ikan Beku Di Pt. Dwi Bina Utama Sorong

Prasetyo¹,

Abrori²,

Pujianto³

2021

BJSJ

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Ikan merupakan salah satu sumber protein yang baik bagi manusia, hanya saja daging ikan tersebut mudah menurun kualitasnya, untuk mempertahankan kualitas daging ikan perlu di dinginkan. Salah satu alat yang di gunakan untuk mendinginkan ikan adalah menggunakan mesin pendingin. Mesin pendingin merupakan mesin yang kompleks, terdiri dari beberapa komponen dan dalam pengoperasinya harus tepat, kekeliruan dalam pengoperasian akan mengakibatkan kegagalan operasional mesin yang berdampak pada kerugian. tujuan penelitian ini adalah untuk mengetahui sistem mesin pendingin pada cold storage, mengetahui komponen mesin pendingin pada cold storage dan mengetahui pengoperasian mesin pendingin pada cold storage. Metode yang digunakan adalah studi kasus mengenai pengoperasian mesin pendingin, Hasil penelitian kemudian di paparkan secara deskriptif. Mesin pendingin yang digunakan menggunakan sistem kompresi uap, komponen yang digunakan adalah kompresor, kondensor, katup ekspansi dan evaporator. Untuk mengoperasikan mesin sebelumnya memastikan mesin dalam kondisi baik dan aman untuk dioperasikan, selanjutnya memastikan tegangan sebesar 380V dan katup dalam kondisi terbuka agar refrigeran dapat bersirkulasi. Mesin akan bekerja secara otomatis dengan di pandu komponen kontrol untuk mendapatkan tekanan hisap 19 Psig, tekanan dorong sebesar 230 Psig. Mesin ini menggunakan alat pengaman HPC, LPC, OPC, dan thermal overload untuk mencegah dari kerusakan

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Section: Hasil Dan Pembahasanunclassified

Pengoperasian Mesin Pendingin Untuk Coldstorage Penyimpanan Ikan Beku Di Pt. Dwi Bina Utama Sorong

Prasetyo¹,

Abrori²,

Pujianto³

2021

BJSJ

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“…Ambient temperature and humidity have significant effects on the performance of Vapour Compression systems, particularly in air conditioning and refrigeration applications in terms of cooling capacity and power consumption [11][12][13]. Higher ambient temperatures can limit the performance of the vapour compression system in terms of its cooling capacity, energy efficiency and increased compressor load [14][15][16]. The cooling capacity of a Vapour Compression system is adversely affected by the temperature difference between the ambient air and the space to be cooled.…”

Section: Introductionmentioning

confidence: 99%

Impact of Ambient Temperature and Humidity on the Performance of Vapour Compression Air Conditioning System - Experimental and Numerical Investigation

Andrew Makar,

Saad Mahmoud,

Raya Al-Dadah

et al. 2024

CFDL

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Due to global warming, population growth, and urbanisation, demands for space cooling in buildings have significantly increased. Mechanical vapour compression cooling technology is relatively mature, well-understood and most commonly used globally. However, they suffer from high energy consumption and adverse environmental impact due to the refrigerants used. As ambient temperature and humidity have significant effects on the performance of vapour compression systems, this paper experimentally and numerically investigates their impact on the performance of vapour compression air conditioning system in terms of power consumption and cooling capacity. It was concluded that at ambient humidity of 55%, as the ambient temperature increases from 22 °C to 40 °C, the compressor temperature has increased from 46 °C to 59 °C which increased its power consumption from 751.2 to 935.52 Watts, giving an increase of 10.24 Watts for every one degree of ambient temperature increase. Also, as ambient humidity in-creased from 32% to 88%, the power consumption increased from 739.2 Watts to 853.2 Watts, an increase of 114 Watts. A validated CFD (Computational Fluid Dynamics) model was developed and predicted a loss in the enthalpy change from 11.7kJ/kg.d.a to 3.6kJ/kg.d.a. due to ambient temperature increasing from 22 °C to 40 °C and a loss of enthalpy change from 12.857kJ/kg.d.a to 5.524kJ/kg.d.a. due to increasing the ambient air humidity from 32% to 88%. This work high-lighted the impacts of ambient conditions on the performance of vapour compression cooling system in terms of increased power consumption and loss of cooling capacity.

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Modelling a simple-vapour compression refrigeration cycle for Fish-Storage boxes

Nasution

Siregar

Bukit

2020

J. Phys.: Conf. Ser.

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In this paper, a computerized modelling of a simple single-stage vapour compression refrigeration cycle has been carried out. The aim is to find a cycle performance that is suitable for fish preservation applications. The simulation was completed using the CoolPack software on two different refrigerants and analysed at various condensation temperatures. As a fixed variable, a specific compressor power has been chosen for all cases in meeting the evaporation temperature designed. The results of this study inform the comparison of cycle performance including heat rejection rate, cooling capacity, COP, and pressure-enthalpy diagram. The main conclusion is that both types of refrigerant that are simulated can produce high COP which is useful for handling the cooling load that is later available. The report on this study will be used further to design a fish-storage box.

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The optimum temperature of single-stages vapor compression refrigeration cycle for Air-Conditioning unit

Cited by 3 publications

References 8 publications

Pengoperasian Mesin Pendingin Untuk Coldstorage Penyimpanan Ikan Beku Di Pt. Dwi Bina Utama Sorong

Pengoperasian Mesin Pendingin Untuk Coldstorage Penyimpanan Ikan Beku Di Pt. Dwi Bina Utama Sorong

Impact of Ambient Temperature and Humidity on the Performance of Vapour Compression Air Conditioning System - Experimental and Numerical Investigation

Modelling a simple-vapour compression refrigeration cycle for Fish-Storage boxes

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