Gas drainage performance evaluation in coal under non-uniform stress with different moisture content: Analysis, simulation and field verification

We proposed to utilize terahertz (THz) waves for the measurement of moisture content of pulp injection molding (PIM) pellets. We developed an automatic and non-destructive THz measurement system with a 0.1 THz source, pyroelectric detector, load cell, and step motor stage. As a first step, the correlation between THz transmittance and moisture content of the PIM product was studied. The results strongly suggest that the proposed method should be applicable to moisture content analysis of PIM products with better than 1% resolution and accuracy, which is much better than the previous studies with more expensive THz sources. Since the contents of pellets and products are the same, it is possible to estimate the moisture content in the pellets by designing similar apparatus. It should be noted that this method is applicable not only to PIM but also has many other applications.

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Performance Evaluation of a Melon Shelling Machine with Different Power Sources

FUOYE Journal of Engineering and Technology ◽

10.46792/fuoyejet.v6i2.607 ◽

2021 ◽

Vol 6 (2) ◽

Author(s):

Temidayo C. Esenamunjor ◽

Ugwu H. Ubabuike

Keyword(s):

Performance Evaluation ◽

Moisture Content ◽

Throughput Capacity ◽

Seed Moisture Content ◽

Power Sources ◽

Moisture Contents ◽

Seed Damage ◽

Seed Moisture ◽

Machine Productivity ◽

Melon Seeds

Performance evaluation of an electric motor and a fuel-engine powered machine used for shelling melon seeds was performed in this study to determine the effects of shelling speed and moisture content on machine productivity. The melon seeds used for the evaluation of the existing melon shelling machine were sourced locally from Umungasi market in Aba, Abia state, Nigeria. The unshelled melon seeds as used were weighed (25g each), sprinkled with water and partially dried with natural air for 25 minutes. This enabled the skin coat became slightly softened and the cotyledon easily detached from the shell, thus making the shelling more efficient. To evaluate the parameters (machine productivity, throughput capacity and percentage seed damage), the melon seeds were employed. For the shelling performance, melon seeds of five different moisture contents (7.48, 10.24, 13.92, 18.36, 21.44%) dry basis (d.b.) at different shelling speeds (850, 1000 and 1200 rpm) were utilized in the evaluation. From the evaluation, results revealed that the machine has an optimal productivity of over 83% and percentage seed damage of 14.2% at seed moisture content of 21.44% and drum speed of 1200 rpm for both power sources. Maximum machine throughput capacity of over 940 kg/h was recorded at 1200 rpm and 21.44% moisture content for both power sources. Overall, results obtained indicated that the machine can effectively shell melon seeds and that seed moisture contents and shelling speed affected the machine productivity.Keywords— Performance operation, evaluation, motorized, melon, shelling machine

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Moisture content analysis of metal powders using oven desorption followed by Karl Fischer titration

Metal Powder Report ◽

10.1016/j.mprp.2019.04.002 ◽

2020 ◽

Vol 75 (1) ◽

pp. 34-39

Author(s):

Pelle Mellin ◽

Tommy Zavalis ◽

Linnéa Tingö ◽

Håkan Brodin ◽

Johan Wendel ◽

...

Keyword(s):

Content Analysis ◽

Moisture Content ◽

Metal Powders ◽

Karl Fischer Titration ◽

Karl Fischer

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Validation of a multipoint near-infrared spectroscopy method for in-line moisture content analysis during freeze-drying

Journal of Pharmaceutical and Biomedical Analysis ◽

10.1016/j.jpba.2014.03.008 ◽

2014 ◽

Vol 95 ◽

pp. 229-237 ◽

Cited By ~ 17

Author(s):

Ari Kauppinen ◽

Maunu Toiviainen ◽

Marko Lehtonen ◽

Kristiina Järvinen ◽

Janne Paaso ◽

...

Keyword(s):

Content Analysis ◽

Infrared Spectroscopy ◽

Moisture Content ◽

Near Infrared Spectroscopy ◽

Freeze Drying ◽

Near Infrared ◽

Spectroscopy Method

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Design, Building and Performance Evaluation of a Mixed-Mode Solar Dryer for Agricultural Products

10.37394/232012.2020.15.11 ◽

2020 ◽

Vol 15 ◽

Keyword(s):

Performance Evaluation ◽

Relative Humidity ◽

Moisture Content ◽

Ambient Temperature ◽

Solar Collector ◽

Mixed Mode ◽

Ambient Air ◽

Agricultural Products ◽

The Third ◽

And Performance

This research work presents the detailed explanation of the design, construction and performance evaluation of mixed-mode solar agricultural products dryer. The experimental set up used for testing the performance of the mixed-mode solar agricultural products dryer and determining the influence of various drying methods on the drying behaviour of agricultural products. Evaluation of the dryer was centered on the moisture content reduction, temperatures and relative humidities variations. 1680 g of freshly potato slides were used for evaluation. The test results gave that the temperatures inside the dryer cabinet and the solar collector were much higher than the ambient temperature during most hours of the daylight. The temperature inside the solar collector was up to 27 o C approximately higher than the ambient temperature. The temperature inside the drying cabinet was up to 22 o C approximately higher than the ambient temperature for about three hours immediately after 12.00 h (noon). The relative humidity in the solar collector and drying cabinet were lower than the ambient air relative humidity, with the ambient air recording the highest relative humidity at each reading followed by the drying cabinet and finally by the solar collector. Because of the decreased relative humidity inside the dryer, all the time, the temperature inside the dryer was high which is sufficient enough to dry the potato at an early time. Based on the results obtained during the test, temperature above 65 o C was recorded inside the drying cabinet. This high temperature in the drying cabinet causes 419 g of moisture to be removed on the first day, 257 g on the second day, 191 g on the third day, 136 g on the fourth day and finally 108 g on the fifth day. At the end of the five days of drying process, the mass of 1680 g of potato was reduced to 569 g. Total amount of moisture removed was 1111 g and total moisture loss was 66.1 %, which is the required amount of moisture to be removed for safe drying of freshly potato slides. The moisture content of the freshly potato slides was 24.9 % at the end of drying for the first day at about 5:00 pm, 20.4 % at the end of drying for the second day, 19 % at the end of drying for the third day, 16.7 % at the end of drying for the fourth day and finally 15.9% at the end of drying for the fifth day. It was observed that the drying rate increased from the end of one day to another, which shows the earlier and faster removal of moisture from the dried item.

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POTENSI ATMOSFER DALAM PEMBENTUKAN AWAN KONVEKTIF PADA PELAKSANAAN TEKNOLOGI MODIFIKASI CUACA DI DAS KOTOPANJANG DAN DAS SINGKARAK 2010

Jurnal Sains & Teknologi Modifikasi Cuaca ◽

10.29122/jstmc.v12i1.2185 ◽

2011 ◽

Vol 12 (1) ◽

pp. 9

Author(s):

M Djazim Syaifullah

Keyword(s):

Content Analysis ◽

Water Vapor ◽

Moisture Content ◽

Observational Data ◽

Precipitable Water ◽

Observation Data ◽

Mixing Ratio ◽

Weather Modification ◽

Application Analysis ◽

West Sumatra

Kajian potensi atmosfer terhadap proses pembentukan dan pertumbuhan awan konvektifpada saat pelaksanaan Teknologi Modifikasi Cuaca (TMC) telah dilakukan dengan datapengamatan sounding dari stasiun Tabing Sumatera Barat. Sebanyak 330 buah datapengamatan harian jam 00Z dan 12Z dari Juni sampai dengan Nopember 2010 telahdianalisis. Dengan aplikasi RAOB analisis dilakukan untuk menentukan parameterdan indeks radiosonde sebagai penduga potensi atmosfer di wilayah tersebut. Hasilanalisis kandungan uap air yang diwakili oleh nilai Mixing Ratio dan PW menunjukkanbahwa selama bulan-bulan tersebut kandungan uap air cukup besar, presipitasi yangdihasilkan dipengaruhi oleh labilitas atmosfer yang diindikasikan oleh beberapa indeksradiosonde. Apabila labilitas pada hari itu cukup baik, maka peluang presipitasinyaakan semakin besar.Study the potential of the atmosphere on the formation and growth of convective cloudsduring the implementation of Weather Modification Technology (TMC) has been donewith observational data came from Padang, West Sumatra station. A further 330 piecesof observation data at 00Z and 12Z each day from June to November 2010 has beenanalyzed. By the RAOB application analysis conducted to determine the parameters and indices as sounding estimators of potential atmospheric in the region. Moisture content analysis results that represented by the value of Mixing Ratio (MR) and Precipitable Water (PW) showed that during the months of water vapor content is quite large, the rainfall was influenced by atmospheric unstability could indicated by several indexes. If unstability on the day was good enough, then the precipitation will be even greater.

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Moisture content analysis of covered uranium mill tailings

10.2172/5257898 ◽

1981 ◽

Author(s):

D.W. Mayer ◽

P.A. Beedlow ◽

L.L. Cadwell

Keyword(s):

Content Analysis ◽

Moisture Content ◽

Mill Tailings ◽

Uranium Mill Tailings

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Performance Evaluation of Solar Tunnel Dryer for Drying of Garlic.

Current Agriculture Research Journal ◽

10.12944/carj.5.2.09 ◽

2017 ◽

Vol 5 (2) ◽

pp. 212-218 ◽

Cited By ~ 1

Author(s):

Arjoo Arjoo ◽

Yadvika Yadvika ◽

Y.K. Yadaadav

Keyword(s):

Performance Evaluation ◽

Moisture Content ◽

Thermal Efficiency ◽

Initial Moisture Content ◽

Drying Process ◽

Tunnel Drier ◽

Drying Time ◽

Tunnel Dryer ◽

Safe Level ◽

And Performance

This paper presents dying efficiency and performance of the solar tunnel dryer for drying of garlic. The dryer is a tunnel like semi-cylindrical in shape, poly house made up of UV-stabilized polyethylene sheet. The capacity is large enough that it can be used to dry 400 kg of garlic under controlled environmental conditions. The temperature inside the dryer was always higher than the ambient and the variation varied from 8-30 ºC. Initial moisture content of garlic was reduced from 66 % (w.b.) to about 9 % (w.b.) in 9 days which is considered to be a safe level. During the drying process the average thermal efficiency of the drier was estimated to be about 13.45 %. Drying time was considerably reduced with the use of a solar tunnel drier and pressing of the sample. Also, the final dried garlic was found to be good in terms of quality and sensory evaluation shows that it is highly acceptable.

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