Experimental Research of Drying Red Chili by Two Methods: Solar Drying and Low - Temperature System Drying

Nimrotham, Chatchawal; Songprakorp, Roongrojana; Thepa, Sirichai; Monyakul, Veerapol

doi:10.1016/j.egypro.2017.10.237

Cited by 28 publications

(19 citation statements)

References 8 publications

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“…The moisture ratio of SAHPD rapidly decreased during the first few hours, after which the decreasing rate of the moisture ratio became steady because the temperature inside the chili peppers was close to the drying temperature, leading to the rate of evaporation constantly decreasing. The trend was similar to the chili pepper drying from earlier studies (Nimrothama et al, ; Tunde‐akintunde & Afolabi, ). Meanwhile, the drying curve of open sun showed that the moisture ratio gradually decreased with drying time.…”

Section: Resultssupporting

confidence: 88%

“…The dried chili peppers are then stored in containers (Hage, Herez, Ramadan, & Bazzi, ). There are various drying methods used including mechanical (Daghigh, Ruslan, Sulaiman, & Sopian, ; Fatouh, Metwally, Helali, & Shedid, ; Qiu et al, ; Zlatanović, Komatina, & Antonijević, ), electrical (Nimrothama, Songprakorpa, Thepaa, & Monyakul, ), infrared (Aktas, Sevik, Amini, & Khanlari, ), dielectric (Jiang, Zhang, Fang, Mujumdar, & Xu, ) and solar (Janjai, Intawee, Kaewkiew, Sritus, & Khamvongsa, ; Kouchakzadeh, ; Prakash & Kumar, ; Sekyere, Forson, & Adam, ; Zarezade & Mostafaeipour, ). Solar energy remains the most popular drying method because of the free energy source (Janjai & Bala, ).…”

Section: Introductionmentioning

confidence: 99%

“…The specific energy consumption and drying efficiency were 1.86 kWh/kg and 25.6%, respectively. For the drying of chili peppers, solar dryers have mostly been employed experimentally, such as for cabinet drying systems (Tunde‐Akintunde, ; Tunde‐akintunde & Afolabi, ), an indirect solar dryer with a solar collector (Fudholi et al, ), a greenhouse dryer with heater (Nimrothama et al, ) and a forced convection solar tunnel dryer (Rabha, Muthukumar, & Somayaji, ). In the case of dryer‐heat pump integration, it was utilized in the vacuum drying system because the drying technique could provide a high drying rate, low drying temperature and an oxygen deficient drying environment (Artnaseaw, Theerakulpisut, & Benjapiyaporn, ).…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of solar‐assisted heat pump dryer with heat recovery for the drying of chili peppers

Naemsai

Jareanjit

Thongkaew

2019

J Food Process Engineering

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This research investigated the performance of a solar‐assisted heat pump dryer (SAHPD) with heat recovery to reduce the amount of thermal energy needed for drying chili peppers. The dryer selected for the experimental study consisted of a heat pump, a greenhouse cover and multi trays. It was found that the SAHPD with recovery gave better drying performance than a traditional dying method. The dryer system can offer drying time, drying efficiency, coefficient of performance and specific energy consumption of approximately 24 hr, 33.2%, 3.17, and 2.21 kWh/kg, respectively. Furthermore, the SAHPD with heat recovery provided a higher drying performance than without the heat recovery although the ambient condition changed. Base on the economic analysis, the payback period and net present value of the SAHPD with heat recovery were approximately 1.9 years and 915.60 USD. The SAHPD with two drying rooms also yielded better drying performance than the SAHPD with one room. Practical applications Drying is the process of moisture reduction to a safe limit of moisture content, which allows agriculture to extend the shelf life of the crops by restraining the growth of microorganism. In chili peppers drying process, a solar assisted heat pump drying as one of hybrid solar dryers is preferred because heat and mass transfer rate are rather high and it offers the ability to operate both daytime and nighttime. However, the exhausted air to the ambient still has considerable thermal energy. Thus, the heat recovery system has been employed to design and fabricate inside the dryer. Findings of this research contribute to the evaluation of heat recovery in a typical solar assisted heat pump dryer in terms of drying efficiency and economic feasibility in order to be a guideline for small and medium‐sized enterprises.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of solar‐assisted heat pump dryer with heat recovery for the drying of chili peppers

Naemsai

Jareanjit

Thongkaew

2019

J Food Process Engineering

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“…Nutrition component. Cabai merah besar contains moisture (90%), energy (32 kcal), protein (0.5 g), fat (0.3 g), carbohydrate (7.8 g), fiber (1.6 g), ash (0.5 g), calcium (29.0 mg), phosphorus (45 mg), iron (0.5 mg), vitamin A (470 IU), vitamin C (181 mg), thiamin (0.05 mg), riboflavin (0.06 mg), and niacin (0.9 mg) per 100 g red fruits [27][28][29], while the green fruits contain energy (23 kcal), protein (0.7 g), fat (0.3 g), carbohydrate (5.2 g), calcium (14 mg), phosphorus (23 mg), iron (0.5 mg), vitamin A (260 IU), and vitamin C (84 mg) per 100 g fruits [24].…”

Section: Cabai Merah Besar (Capsicum Annuum L) and (Capsicum Annuum mentioning

confidence: 99%

Diversity and Potency ofCapsicumspp. Grown in Indonesia

Wijaya¹,

Harda²,

Rana³

2020

Capsicum

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Capsicum spp., popularly known as chili pepper, is abundantly cultivated in Indonesia. Chili pepper has deeply integrated into Indonesian culture, even turned into inseparable ingredients in the local diets. Adapted to the Indonesian environment and timely selected according to the local palate, vast variation of appearance, color, taste, aroma, and pungency of chili pepper transformed into a variety of cuisines and medicinal purposes. This chapter covers a selection of chili peppers in Indonesia, introduced as "commonly available in the market," and some other variants, which are less popular; however, due to their unique flavors, they will be interesting to be introduced and addressed as "exotic Capsicums." This chapter will describe their botanical information, distribution area, and nutritional and flavor aspects, including their bioactive compounds. Furthermore, the utilization of genus Capsicum in Indonesia, from the food industry, pharmaceutical, and ornamental plants, will be described.

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“…One of the technological developments is in the Arduino Uno microcontroller field that has been applied in various sectors. Nimrotham [11] experimented on a microcontroller unit (MCU) to control relative humidity and temperature in the chamber for drying red chili. Therefore, this technology development, which became the next background of the problem in which the implementation of Arduino technology on industrial sector especially on the coffee factory is expected to be able of providing better effectivity and time efficiency during the drying process of coffee beans to facilitate farmers in producing good quality coffee.…”

Section: Introductionmentioning

confidence: 99%

Designing An Automatic Microcontroller-based Drying Machine of Coffee Beans

Derisma

Putra

Yendri

2019

JTS

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This research aimed to create an automatic microcontroller-based coffee bean drying machine without the support of sunlight to produce SNI-standardized coffee beans with small water content or amounted to 12%. The appliance consists of a tubeshaped container with 50 cm length and 11 cm radius, soil moisture sensor, DS18B20 temperature sensor, heater, motor DC, relay two-channel, and Arduino Uno microcontroller. The drying works when soil moisture sensor detects 12% of water content from big coffee beans. The drying process is done by applying a heater to dry the coffee beans, and the motor DC is used as the rotator of the container to dry the coffee beans evenly. The temperature of the drying container is around 51°C-55°C because the surface of coffee beans will be damaged if the temperature is above 55°C. When the water content of coffee beans is low or equal to 12%, the drying process is terminated. The drying process of dense coffee beans (1 kg) with 25.34% of initial water content takes 60 minutes with 11.74% of final water content as a result, While the drying process with the help of sunlight required approximately 310 minutes with 11.83% of final water content. It has been proved that the drying with the machine was faster than the drying process through sunlight.

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Experimental Research of Drying Red Chili by Two Methods: Solar Drying and Low - Temperature System Drying

Cited by 28 publications

References 8 publications

Experimental investigation of solar‐assisted heat pump dryer with heat recovery for the drying of chili peppers

Experimental investigation of solar‐assisted heat pump dryer with heat recovery for the drying of chili peppers

Diversity and Potency ofCapsicumspp. Grown in Indonesia

Designing An Automatic Microcontroller-based Drying Machine of Coffee Beans

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