Heat transfer characteristics of coconut oil as phase change material to room cooling application

Irsyad, Muhammad; Harmen,

doi:10.1088/1755-1315/60/1/012027

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…Pada penelitian lain dikemukakan bahwa Penggunaan enkapsulasi PCM pada batako berongga dapat menurunkan kondiktivitas termal hingga 19,5%, dan untuk penggunaan PCM dalam box pada dinding bagian dalam dapat menurunkan temperatur permukaan dinding bagian dalam hingga 30 o C [6]. Sedangkan penyimpanan energi dingin mengunakan perubahan fasa material (PCM) sangat baik diaplikasikan pada bangunan karena memiliki suhu lebur yang baik.…”

Section: Pendahuluanunclassified

An Experimental Study of the Use of Coconut Oil-based PCM to Reduce the Thermal Load of Air Conditioners as an Effort to Save Energy

2022

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The use of air conditioning affects energy consumption. Thermal load is a big factor that affects energy consumption by air conditioners. For this reason, the thermal load of a room needs to be reduced. One strategy to reduce the room's thermal load is the use of phase change materials (PCM). Coconut oil is a PCM that has a freezing temperature in the range of 21.30 – 21.73 oC which will be investigated in this study. The test was carried out with three room models; without PCM, with PCM partition, and PCM partitioned with night air. Each room model carried out 3 variations of air temperature, as well as 4 variations of the heater. The results showed that the use of coconut oil PCM as a room partition can help reduce the room temperature to 2oC below the AC temperature with a decrease in the use of electrical energy reaching 400 Watts. Air conditioner (AC) merupakan alat untuk mengondisikan udara pada sebuah ruangan. Penggunaannya berdampak pada konsumsi energi listrik. Beban termal menjadi faktor besar yang mempengaruhi konsumsi energi oleh AC. Untuk itu beban termal dari sebuah ruangan perlu dikurangi. Salah satu strategi untuk mengurangi beban termal ruangan yaitu penggunaan phase change material (PCM). Minyak kelapa merupakan PCM yang memiliki suhu beku dengan rentang 21,30 – 21,73 oC yang akan diteliti kali ini. Pengujian dilakukan dengan tiga model ruangan yaitu non PCM, berpartisi PCM, dan berpartisi PCM dengan udara malam. Masing-masing model ruangan dilakukan 3 variasi temperatur udara ,serta 4 variasi heater. Hasil penelitian menunjukkan bahwa penggunaan PCM minyak kelapa sebagai partisi ruangan dapat membantu menurunkan temperatur ruangan sampai 2oC dibawah temperatur AC dengan penurunan penggunaan energi listrik mencapai 400 Watt.

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Section: Pendahuluanunclassified

An Experimental Study of the Use of Coconut Oil-based PCM to Reduce the Thermal Load of Air Conditioners as an Effort to Save Energy

2022

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“…Coconut oil is utilized in passenger vehicles [15] to reduce the cabin's average temperature by 15 • C and improve the passengers' thermal comfort. Irsyad et al [16] studied a room cooling application with coconut oil as PCM in a container. The experimental solidification phase occurred at 24 • C, and the melting phase was reported at 22-24 • C [16].…”

Section: Introductionmentioning

confidence: 99%

“…Irsyad et al [16] studied a room cooling application with coconut oil as PCM in a container. The experimental solidification phase occurred at 24 • C, and the melting phase was reported at 22-24 • C [16]. Silalahi et al [17,18] studied coconut oil for potential use in sensible and latent TES for room-temperature conditioning applications in Indonesia, and the latent heat of coconut oil was decreased by adding graphite nanoparticles, CuO, and ZnO.…”

Section: Introductionmentioning

confidence: 99%

Thermal Properties of Novel Phase-Change Materials Based on Tamanu and Coconut Oil Encapsulated in Electrospun Fiber Matrices

et al. 2022

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The accumulation of thermal energy in construction elements during daytime, and its release during a colder night period is an efficient and green way to maintain a comfortable temperature range in buildings and vehicles. One approach to achieving this goal is to store thermal energy as latent heat of the phase transition using the so-called phase-change materials (PCMs). Vegetable oils came recently into focus as cheap, widely available, and environmentally friendly PCMs. In this study, we report the thermal properties of PCMs based on tamanu and coconut oils in three configurations: pure, emulsion, and encapsulated forms. We demonstrate the encapsulation of pure coconut- and tamanu-oil emulsions, and their mixtures and mixtures with commercial PCM paraffins in fiber matrices produced by a coaxial electrospinning technique. Polycaprolactone (PCL) was used as a shell, the PCM emulsion was formed by the studied oils, and sodium dodecyl sulfate (SDS) and polyvinyl alcohol (PVA) were used as emulsifiers. The addition of commercially available paraffin RT18 into a 70/30 mixture of coconut and tamanu oil, successfully encapsulated in the core of a PCL shell, demonstrated latent heats of melting and solidification of 63.8 and 57.6 kJ/kg, respectively.

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“…This is due not only to the high cost of the commercially available PCM products but also to their relatively low melting temperature since most of these are designed for colder climates [19]. Recently, coconut oil has been introduced as an inexpensive alternative PCM in Bandung, Indonesia [20,21].…”

Section: Introductionmentioning

confidence: 99%

Climate-Based Analysis for the Potential Use of Coconut Oil as Phase Change Material in Buildings

et al. 2021

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One of the most efficient measures to reduce energy consumption in buildings is using passive thermal comfort strategies. This paper shows the potential of coconut oil as a bio-based phase change material (PCM) incorporated into construction components to improve the thermal performance of buildings for several climates, due to its environmental advantages, wide availability, and economic feasibility. The thermophysical properties of coconut oil were determined through differential scanning calorimetry. Numerical simulations were conducted in ESP-r, comparing an office space with a gypsum ceiling to one with coconut oil as PCM for 12 climate types in the Köppen–Geiger classification. The results show that coconut oil is a suitable PCM for construction applications under tropical and subtropical climates. This PCM can provide year-round benefits for these climates, even though a higher melting point is needed for optimum performance during hotter months. The highest demand reduction of 32% and a maximum temperature reduction of 3.7 °C were found in Mansa, Zambia (Cwa climate). The best results occur when average outdoor temperatures are within the temperature range of phase change. The higher the diurnal temperature range, the better the results. Our findings contribute to a better understanding of coconut oil in terms of its properties and potential for application in the building sector as PCM.

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Heat transfer characteristics of coconut oil as phase change material to room cooling application

Cited by 8 publications

References 8 publications

An Experimental Study of the Use of Coconut Oil-based PCM to Reduce the Thermal Load of Air Conditioners as an Effort to Save Energy

An Experimental Study of the Use of Coconut Oil-based PCM to Reduce the Thermal Load of Air Conditioners as an Effort to Save Energy

Thermal Properties of Novel Phase-Change Materials Based on Tamanu and Coconut Oil Encapsulated in Electrospun Fiber Matrices

Climate-Based Analysis for the Potential Use of Coconut Oil as Phase Change Material in Buildings

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