Analytical estimation of pressure drop in indirect evaporative coolers for power reduction

Moshari, Shahab; Heidarinejad, Ghassem

doi:10.1016/j.enbuild.2017.05.080

Cited by 30 publications

(11 citation statements)

References 37 publications

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“…The calculated wet-bulb efficiency was 120%. In a paper presented by Moshari et al [53], an analytical solution was presented. Authors obtained minimalization of pressure drop in IEC.…”

Section: Maisotsenko Air Conditioning (Mac)mentioning

confidence: 99%

Overview of the M-Cycle Technology for Air Conditioning and Cooling Applications

2022

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The indirect evaporative cooler (IEC) has excellent potential to replace or improve conventional vapor compression equipment in HVAC and refrigeration applications. This could be achieved by using the M-cycle (dew-point evaporative cooling technology). This thermodynamic concept makes it possible to derive a large amount of energy from the air stream (as latent heat released during water evaporation into the working air stream) and use it for another air stream (product). Its application has also spread to other sectors, such as water desalination and distillation, power plants, or NOx reduction. This paper provides an overview of the M-cycle mainly in air conditioning (MAC, D-MAC, H-MAC) and refrigeration (MCT, M-condenser). Various integrated solutions are described, showing improved effectiveness in terms of the wet-bulb temperature and the dew point. The design features of consolidated solutions are better In terms of the flow distribution, geometry, or volume. Most of the improvements confirm the great potential of the M-cycle to increase the unit or the system efficiency due to lower energy and water consumption.

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“…The calculated wet-bulb efficiency was 120%. In a paper presented by Moshari et al [53], an analytical solution was presented. Authors obtained minimalization of pressure drop in IEC.…”

Section: Maisotsenko Air Conditioning (Mac)mentioning

confidence: 99%

Overview of the M-Cycle Technology for Air Conditioning and Cooling Applications

2022

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“…A summary can be found in Table 3, which provides information about the experimental model validation in mentioned study (see Yes or No in Table 3). For example, Moshari et al [21] presented an analytical solution for minimalization of pressure drop in IEC. It was underlined that the pressure drop should be considered in a pre-design stage of IEC systems.…”

Section: Modelling the Dpiec Performancementioning

confidence: 99%

Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

Pacak

Worek

2021

Applied Sciences

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Indirect evaporative cooling has the potential to significantly improve the natural environment. It follows from a significant reduction in electricity consumption in the hot period, and hence lower operating costs for cooling systems. This paper presents the current state of knowledge and research directions on dew point indirect evaporative cooling. It was found that researchers focus on the development of dew point indirect evaporative coolers (DPIEC) by improving its design, geometry, water distribution, and new porous materials implementation. To evaluate the performance of new types of DPIEC, different methods are used by the scientists. Finally, optimized devices are studied in terms of their performance in different systems, like hybrid and desiccant systems, considering different climate conditions. Potential directions of development of evaporative technologies were indicated, such as increasing the coefficient of performance of solid desiccant evaporative cooling systems, developing novel geometry, and efficient water distribution, including development of porous materials.

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“…Pada pendingin evaporatif, pengurangan daya atau penggunaan daya yang hemat merupakan tuntutan yang sangat penting (Moshari et al 2017), namun pada naskah ini pengukuran daya bukan menjadi fokus utama. Nilai suhu dan RH pada pendingin evaporatif ini mendekati jika dibandingkan dengan nilai suhu dan RH pendingin evaporatif yang dilakukan oleh Aziz et al (2014) sebesar 25,88 o C dan RH 91%.…”

Section: Pembahasanunclassified

Identifikasi Perubahan Sifat Fisik Jambu Biji Merah (Psidium guajava L.) Selama Masa Penyimpanan pada Pendingin Evaporatif Termodifikasi

2020

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Jambu biji merupakan salah satu produk hortikultura yang dapat hidup di daerah tropis dan memiliki nilai ekonomis cukup tinggi. Buah pada daerah tropis cepat mengalami kerusakan terutama disebabkan oleh kondisi suhu dan kelembaban. Diperlukan penanganan pascapanen yang dapat memperpanjang umur simpan produk dan dapat mempertahankan mutu produk seperti alat pendingin evaporatif sebagai tempat penyimpanan. Penelitian ini bertujuan untuk: 1). Menghitung laju penurunan mutu buah jambu biji merah selama masa penyimpanan pada pendingin evaporatif dan suhu ruang. 2). Menganalisis perubahan sifat fisik buah jambu biji merah selama penyimpanan pada pendingin evaporatif dan suhu ruang. Variabel yang diukur meliputi efektifitas pendingin, suhu, kelembaban relatif, kadar air, susut bobot, kekerasan, kadar brix dan warna. Metode yang digunakan dalam penelitian adalah metode eksperimental dengan objek penelitian yaitu jambu biji merah dengan ukuran diameter horizontal 7-8 cm dan panjang vertikal 6-8 cm. Jambu biji merah yang digunakan diperoleh dari perkebunan jambu di Kampung Penyisihan, Desa Ketenger. Analisis data pada penelitian ini menggunakan persamaan kinetika reaksi. Hasil penelitian menunjukan bahwa perlakuan penyimpanan pendingin evaporatif dapat mempertahankan mutu susut bobot, warna (Lab) dan kekerasan jambu biji merah. Sedangkan perlakuan suhu ruang dapat mempertahankan mutu kadar brix jambu biji selama penyimpanan.

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Analytical estimation of pressure drop in indirect evaporative coolers for power reduction

Cited by 30 publications

References 37 publications

Overview of the M-Cycle Technology for Air Conditioning and Cooling Applications

Overview of the M-Cycle Technology for Air Conditioning and Cooling Applications

Review of Dew Point Evaporative Cooling Technology for Air Conditioning Applications

Identifikasi Perubahan Sifat Fisik Jambu Biji Merah (Psidium guajava L.) Selama Masa Penyimpanan pada Pendingin Evaporatif Termodifikasi

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