Studi Eksperimen Dan Modifikasi Sistem Air Conditioning Hybrid Hemat Energi Dengan Penerapan Phase Change Material

Adraypa, Adraypa (2023) Studi Eksperimen Dan Modifikasi Sistem Air Conditioning Hybrid Hemat Energi Dengan Penerapan Phase Change Material. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Konsumsi listrik yang disebabkan oleh Sistem Refrigerasi di Gedung Perkantoran memiliki porsi 60% dari total konsumsi listrik gedung berdasarkan Laporan Konservasi Energi Nasional tahun 2022. Konsumsi Listrik dapat dikurangi dengan memodifikasi sistem AC konvensional atau yang sudah ada menjadi sistem hybrid AC. Metode modifikasi dapat dilakukan dengan menggunakan 2 evaporator yang berbeda dalam satu tempat pendinginan. Evaporator yang ditambahkan terkandung bahan pengubah fasa Calcium Chloride Hexahydrate + Strontium Chloride Hexahydrate. Metode kerja Hybrid Air Conditioning System adalah mensirkulasikan refrigeran fase uap untuk mengisi bahan pengubah fasa cair menjadi fasa padat sedangkan evaporator lainnya disirkulasikan oleh refrigeran untuk menyerap panas ruangan. Dengan mempertahankan rentang suhu ruang pada 24oC hingga 26oC Hasil percobaan menunjukkan bahwa proses perubahan fase material charging menjadi fase padat adalah 2 jam dari suhu ruang awal pada 28oC hingga 24oC dan proses discharging untuk mempertahankan suhu ruang selama 30 menit. Kerugian dari modifikasi ini adalah kinerja evaporator yang ada untuk menyerap panas ruangan menurun sebesar 2oC. Hybrid Air Conditioning System berhasil menggantikan 1,36 kW dengan konsumsi listrik 0,026 kW selama 100 menit pada operasi 8 jam dengan sukses. Dari segi ekonomi system AC hybrid hemat energi memiliki angka benefit cost ratio yang lebih besar yaitu sebesar 0,738 dibandingkan dengan system AC Konvensional sebesar 0,431. Reduksi biaya listrik yang dihasilkan adalah sebesar 19% dalam durasi operasional selama 8,34 jam
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The electricity consumption caused by the Refrigeration System in the Office Building accounts for 60% of the total building electricity consumption, according to the National Energy Conservation Report for the year 2022. Electricity consumption can be reduced by modifying the conventional or existing AC system into a hybrid AC system. The modification method can be done by using 2 different evaporators in one cooling unit. The additional evaporator contains the phase change material Calcium Chloride Hexahydrate + Strontium Chloride Hexahydrate. The working method of the Hybrid Air Conditioning System involves circulating the refrigerant in vapor phase to fill the phase change material in its liquid state to solid, while the other evaporator circulates the refrigerant to absorb room heat. By maintaining the room temperature range at 24°C to 26°C, the experimental results show that the process of charging material phase change into a solid phase takes 2 hours from the initial room temperature at 28°C to 24°C, and the discharging process to maintain the room temperature takes 30 minutes. The drawback of this modification is that the existing evaporator's performance in absorbing room heat decreases by 2°C. The Hybrid Air Conditioning System successfully replaces 1,36 kW with an electricity consumption of 0,026 kW for 100 minutes during an 8-hour operation with a successful outcome. Economically, the energy-efficient hybrid AC system has a higher benefit-cost ratio of 0,738 compared to the conventional AC system, which is 0,431. The resulting reduction in electricity costs is 19% during an operational duration of 8,34 hours.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Calcium Chloride Hexahydrate, Strontium Chloride Hexahydrate, Konsumsi Listrik, Refrigeran; Calcium Chloride Hexahydrate, Strontium Chloride Hexahydrate, Konsumsi Listrik, Refrigerant
Subjects:	Q Science > QC Physics > QC320 Heat transfer Q Science > QD Chemistry > QD79.T38 Thermal analysis V Naval Science > V Naval Science (General) > V220 Naval ports, bases, reservations, docks, etc. V Naval Science > VC Naval Maintenance > VC 270-279 Equipment of vessels, supplier,allowances,etc V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM485 Cold storage on ships. Marine refrigeration.
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Adraypa Adraypa
Date Deposited:	30 Aug 2023 01:01
Last Modified:	30 Aug 2023 01:01
URI:	http://repository.its.ac.id/id/eprint/102465

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