Performance of a large-scale greenhouse solar dryer integrated with phase change material thermal storage system for drying of chili

Pankaew, P.; Aumporn, Orawan; Janjai, Serm; Pattarapanitchai, S.; Sangsan, M.; Bala, B. K.

doi:10.1080/15435075.2020.1779074

Cited by 58 publications

(25 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat accumulation happens inside the greenhouse solar dryer due to solar radiation entering into the dryer. Solar intensity during all the days of the experiments is recorded between 292 and 986 W/m 2 and the similar readings reported by Pankaew et al (2020). Evaporation of moisture from the product is slower during initial hours later it increases due to increasing in solar radiation.…”

Section: Resultssupporting

confidence: 89%

“…

Exergy efficiency = 0.017 \times Total incident solar radiation ((), kW) + 2.37, R^{2} = .66

The bonding between the exergy efficiency and solar radiation is good ( R 2 = .66) for the solar radiation range of 0–120 kW. (Chowdhury, Bala, & Haque, 2011; Pankaew et al, 2020)and matched with similar trend for the current work. The assessment of exergy efficiency is quite complicated.…”

Section: Resultssupporting

confidence: 86%

“…Due to that, the free convection dryer humidity is always higher than the forced convection dryer. The same humidity variation trend follows on the remaining drying days are reported (Pankaew et al, 2020; Prakash & Kumar, 2015). The difference in humidity variation is higher on initial drying days and lower on final drying days.…”

Section: Resultssupporting

confidence: 79%

“…The overall exergy efficiency values for photovoltaic integrated greenhouse dryer are reported as 200% lower than the current work because of their theoretical calculation with some assumptions (Tiwari & Tiwari, 2017). In current work efficiency values may be further increased by increasing effective base area, utilization area, insulating the north wall and integrated with any other sources like PCM thermal storage, biomass heater, and so forth (Chauhan & Kumar, 2018b; Pankaew et al, 2020). To study the relation between exergy and total solar radiation on the dryer, the values of exergy and solar radiation has been plotted in Figure 14.…”

Section: Resultsmentioning

confidence: 99%

“…The bonding between exergy efficiency and dryer air temperature was considerably high for the temperature range of 34–45°C and the correlation coefficient was also high ( R 2 = .88). Many researches had presented the relation between exergy efficiency and dryer air temperature (Beigi, Tohidi, & Torki‐Harchegani 2017; Pankaew et al, 2020). The exergy efficiency of GHSD is predicted with dryer air temperature by using the Equation (14).…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Experimental investigation of drying characteristics of lima beans with passive and active mode greenhouse solar dryers

Mani

Valarmathi

2021

J Food Process Engineering

View full text Add to dashboard Cite

In the study, the thermal performance of the even span and parabolic roof type solar greenhouse dryers is investigated under the active and passive modes under the same operating conditions. Dryers were covered with the 200‐μm UV stabilized polyethylene sheets to enhance the solar insolation effect. The performance of these dryers is evaluated for drying lima beans (Phaseolus lunatus). The moisture content of Lima beans was reduced from 75% (w.b.) to 11% (w.b). For both of active and passive mode conditions, the parabolic dryer could dry in 28 and 32 hr, respectively and that for the even span dryer, it could achieve the same state in 32 and 36 hr, respectively. The open sun drying took as high as 40 hr to dry time for the lima beans. The highest thermal efficiency of the dryers was estimated to be 14.7% for the active mode parabolic dryer and the minimum as 12.03% in the passive mode even span dryers. The nutrition retainment was the highest for parabolic active mode dryer with the payback period as 2.15 years, as against 10 years of expected solid life span and strong suggestion is made for the use of the small scale needful farmers. Practical Applications Drying is an energy consuming processes, and industries require more amount of energy for drying a food grain. In the current scenario, more attention is toward for usage of the Solar based dryers for the abundance of availability of solar energy which makes cost effective. However, the popularly available conventional method of open Sun drying of lima beans resulted in contamination of product from external dirt, degradation due to direct heating, existence of uncontrolled dry rate and additional dry time. To solve the above constraints, in open sun drying and to improve the dried product quality, the author constructed a simple, compact and economically modified greenhouse solar dryer. The quality of dried lima beans under active mode convection parabolic roof was superior. The much needed carbohydrate and protein values, of dried lima beans of 100 g sample for forced convection parabolic roof greenhouse solar dryer had shown the increase of 2 and 10% than open sun dry sample. Among various seeds used to making food stuff, the lima beans are one of the choices for people.

show abstract

Section: Resultssupporting

confidence: 89%

“…

Exergy efficiency = 0.017 \times Total incident solar radiation ((), kW) + 2.37, R^{2} = .66

Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Experimental investigation of drying characteristics of lima beans with passive and active mode greenhouse solar dryers

Mani

Valarmathi

2021

J Food Process Engineering

View full text Add to dashboard Cite

show abstract

Phase Change Materials in Food Dryers

Himel¹,

Hasan²,

Ahmed

et al. 2023

Materials Science and Engineering in Food Product Development

View full text Add to dashboard Cite

Review of Solar Greenhouse Drying Systems in Conjunction with Hybrid Technological Features, Designs, Operations, and Economic Implications for Agro‐Food Product Processing Application

Khan,

Chakraborty,

Dash

et al. 2024

Energy Tech

View full text Add to dashboard Cite

This review reports recent developments in solar greenhouse drying systems in conjunction with hybrid technological features and their designs, operations, and economic implications as well as application in agro‐food product processing. Solar energy is one of the most efficient renewable energy sources to be used as an alternative to fossil fuels. This form of energy is the finest option for space heating and electricity generation among the available renewable energy sources. Solar energy can be used directly or indirectly for dehydrating agricultural and nonagricultural products. However, the products are susceptible to natural disasters such as rain, insects, and animals in open‐air sun drying. Solar greenhouse drying systems in conjunction with hybrid technological features are one of the most recent applications used in the agro‐food processing sectors. The review shows that the quality of products dried in conservatories is superior to that of products traditionally dried under the sun. Further, higher sustainability of the solar greenhouse‐oriented hybrid drying system in terms of embodied energy, energy return time, CO2 emission, net CO2 mitigation, and carbon credit can also be observed with the strengths, weaknesses, opportunities, and threats analysis, i.e., strengths, weaknesses, opportunities, and threats of solar dryers. This shows the framework for abundant real‐world applications.

show abstract

Performance of a large-scale greenhouse solar dryer integrated with phase change material thermal storage system for drying of chili

Cited by 58 publications

References 61 publications

Experimental investigation of drying characteristics of lima beans with passive and active mode greenhouse solar dryers

Experimental investigation of drying characteristics of lima beans with passive and active mode greenhouse solar dryers

Phase Change Materials in Food Dryers

Review of Solar Greenhouse Drying Systems in Conjunction with Hybrid Technological Features, Designs, Operations, and Economic Implications for Agro‐Food Product Processing Application

Contact Info

Product

Resources

About