Review of solar drying systems with air based solar collectors in Malaysia

Fudholi, Ahmad; Sopian, Kamaruzzaman; Bakhtyar, B.; Gabbasa, Mohamed; Othman, Masuri; Ruslan, Mohd Hafidz

doi:10.1016/j.rser.2015.07.026

Cited by 127 publications

(42 citation statements)

References 66 publications

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“…Fruits and vegetables with higher water content help the easy attack of the microorganism and the microbial effect plays a very important role in spoilage of fruits and vegetables Singh and Kumar, 2012b). The financial value of those losses is approximately 104 million dollars annually and the reasons of these losses are poor preservation approaches, improper handling and improper storage facilities (Singh and Kumar, 2012b;Fudholi et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Crop drying is a process of dehydration using the heat. That heat can be generated by burning of fossil fuels, through the electricity and by the solar radiation (Singh and Kumar, 2012b;Fudholi et al, 2015;Prakash et al, 2013). But consumption of fossil fuel again a problem like burden of foreign exchange on developing country and other problem is environmental concern (GHG emission).…”

Section: Introductionmentioning

confidence: 99%

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Performance analysis of greenhouse dryer by using insulated north-wall under natural convection mode

Chauhan

Kumar

2016

Energy Reports

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a b s t r a c tA prototype north wall insulated greenhouse dryer has been fabricated and tested in no-load conditions under natural convection mode. Experimentation has been conducted in two different cases. Case-I is when solar collector placed inside the dryer and Case-II is North wall insulated greenhouse dryer without solar collector. Coefficient of performance, heat utilisation factor, convective heat transfer coefficient and coefficient of diffusivity have been evaluated in thermal performance analysis. The difference of the highest convective heat transfer coefficient of both cases is 29.094 W/m 2°C which is showing the effectiveness of insulated north wall and solar collector. The maximum coefficient of diffusivity (0.0827) was achieved during the third day of experiment in Case-II. The inside room temperature of wall insulated greenhouse dryer for Case-I is 4.11%, 5.08 % and 11.61 % higher than the Case-II during the day 1, day 2 and day 3 respectively. This result is also showing the effectiveness of solar collector and insulated north wall. The highest heat utilisation factor (0.616) is obtained during the second day for Case-I while for Case-II it is 0.769 during the third day of experimentation. Maximum coefficient of performance achieved is 0.892 during the third day of the experiment for Case-I whereas 0.953 is obtained on the first day of experimentation for Case-II.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance analysis of greenhouse dryer by using insulated north-wall under natural convection mode

Chauhan

Kumar

2016

Energy Reports

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“…Solar systems are renewable, economical, and easy to operate. Numerous types of solar dryers have been developed with various designs such as chamber based, rack/tray type, bin, and tunnel type for agricultural products (Fudholi et al, ). Some aspects of solar dehydrated FV have been reviewed by (Jayaraman, Gupta, & Rao, ) who reported that passive type solar dryers (having property of natural heated air movement, easily constructed, and inexpensive) are used to dry various fruits (bananas, pineapples, and mangoes) and vegetables (potatoes, carrots, and French beans) in small batches.…”

Section: Modern Drying Techniquesmentioning

confidence: 99%

Modern drying techniques in fruits and vegetables to overcome postharvest losses: A review

Hasan

Malik

Ali

et al. 2019

J Food Process Preserv

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Fresh fruits and vegetables have higher moisture contents and deteriorate over a short period of time if not handled appropriately. Available storage technologies such as refrigeration and controlled atmospheres are expensive as these need continuous energy for system operation throughout the whole supply chain. So, the use of drying techniques is being encouraged as it reduces the postharvest losses and provides easiness in storage, transport, and ensures product availability round the year. Drying of fruits and vegetables through conventional approaches such as sun or open‐air drying found a slow process and may lead to the inferior quality product due to contamination. Various advanced drying techniques such as solar, microwave, vacuum, infrared, freeze, oven drying, and different hybrid drying technologies have been developed around the globe as being successfully used for various fruits and vegetables. This paper mainly focuses to review crop‐specific operations, its impact on quality, efficiency, cost‐effectiveness, and nutrient retention ability. Practical applications Dried products are broadly used by the industries related to confectionery, bakery, and sweet and distilling industries in the development of versatile by‐products including sauces, teas, puddings, garnishments, and food supplements for infants as well as children. Fruits and vegetables can be dried with suitable retention of nutrients and health‐promoting compounds. Crop‐specific drying technologies have been optimized for the quality conservation of dehydrated products. Several novel drying techniques discussed in this review could be helpful to researchers and relevant industry stakeholders for application and improvement.

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“…The use of non-renewable fuels, such as fossil fuel has many side effects. Their combustion products produce global warning, acid rain and pollution (Fudholi et al, 2016a;2016b;Fudholi et al, 2015a;2015b;Fudholi et al, 2014a;Fudholi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Design Maximum Power Point Tracking (MPPT) on Photovoltaic Panels using Fuzzy Logic Method

Faizal

Sutoyo

Mulyono

et al. 2016

American Journal of Engineering and Applied Sciences

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Solar energy is a clean energy, renewable, and available for the long term. The tool used to convert the energy generated from the intensity of sunlight into electricity is photovoltaic panels. However, due to the high cost and low efficiency, the use of the energy is still kind small compared to other types of energy sources. Thus, the need for an effective and flexible models, which resemble the characteristics of the actual photovoltaic (PV), so that we can perform simple manipulation of some data to figure out how to get the maximum performance possible. The characteristic of the solar panel output is specific and non-linear, it depend on the solar irradiation and the temperature of the solar panel. Because of it, it makes us difficult to get the Maximum Power Point (or abbreviated MPP) of the solar panels. Approach: Therefore, to solve these problems required the modeling of the solar panel for design and simulate the algorithms of Maximum Power Point Tracking (MPPT) to maintain the working point of solar panels fixed on the MPP. Overall, the designed system results carried are running well. The increase in the average value of the output voltage by 17%, from an average of 11.6 V before installation into 13.94 V after installation MPPT system. It also occurs in output power with an increase of 28%, from an average of 35.13 W before installing system MPPT into 48.9 W after installation MPPT system. The temperature effect on module voltage and output power before and after installation of the MPPT system that after the installation of the MPPT system, the voltage output of photovoltaic modules can be maintained around the desired maximum value that's equal to 12 V. But there was a drop in output power value compared to the prior installation MPPT system. This is caused by the output current value that cannot accommodate the value of the output voltage. So that the value of the output current is enough to produce the maximum output power is needed quantities corresponding load.

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Review of solar drying systems with air based solar collectors in Malaysia

Cited by 127 publications

References 66 publications

Performance analysis of greenhouse dryer by using insulated north-wall under natural convection mode

Performance analysis of greenhouse dryer by using insulated north-wall under natural convection mode

Modern drying techniques in fruits and vegetables to overcome postharvest losses: A review

Design Maximum Power Point Tracking (MPPT) on Photovoltaic Panels using Fuzzy Logic Method

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