Solar-LP gas hybrid plant for dehydration of food

Ortiz-Rodríguez, N.M.; Garcı́a-Valladares, O.; Figueroa, Isaac Pilatowsky; Menchaca-Valdez, A.C.

doi:10.1016/j.applthermaleng.2020.115496

Cited by 19 publications

(4 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to non-renewable sources, solar energy is considered the most beneficial renewable energy resource for drying industrial and agricultural products. The utilization of solar power in food drying technology can reduce costs associated to the use of fossil fuels [6]. The use of solar energy in the food production process has a great impact on the development of food technology, although there is currently a movement toward renewable energy storage due to the impacts of fossil fuel use on energy and climate change; furthermore, the demand to reduce post-harvest damage is growing.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Varying the Air Flow in a Solar Collector on the Quality of Arabica Coffee Beans

Siagian,

Napitupulu,

Ambarita

et al. 2024

Fluids

View full text Add to dashboard Cite

Agricultural commodity drying technology aims to maintain and improve the quality of agricultural products. Coffee quality is important for the welfare of coffee farmers, and drying technology plays an important role in determining the quality of coffee. Various drying models can be applied, including the traditional model that is still applied today: drying directly under solar radiation. One drying technology that can accelerate the drying time is varying the air velocity in the drying chamber. In this study, the air velocity was varied by 1–3 m/s over coffee bean samples with an initial weight of 1500 g that were dried in parallel simultaneously. The time required was 25 h, with a maximum radiation of 586.9 w/m2 and total solar energy over 3 days of 16.6 MJ/m2. It was found that good quality coffee was achieved using drying box 1, with a drying air velocity of 1.0 m/s, with which a final mass of 732.24 g was obtained with coffee moisture content of 12.0%, protein content of 11.7%, carbohydrate content of 21.7%, and free fatty acid content of 0.05%. Higher air velocities resulted in almost the same protein and carbohydrate content, as well as a fatty acid content of less than 0.1%, but a higher moisture content.

show abstract

Section: Introductionmentioning

confidence: 99%

The Effect of Varying the Air Flow in a Solar Collector on the Quality of Arabica Coffee Beans

Siagian,

Napitupulu,

Ambarita

et al. 2024

Fluids

View full text Add to dashboard Cite

show abstract

“…2 Compared to non-renewable sources, solar energy is considered the most beneficial renewable energy resource for drying industrial and agricultural products. The utilization of solar power in food drying technology can reduce costs due to fossil fuels [6]. Solar energy in the food production process has a great impact in the development of food technology, although there is currently a movement towards renewable energy storage due to the impact of fossil fuel use on energy, climate change, and the demand to reduce post-harvest damage is growing.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Varying Air Flow Solar Collector on the Quality of Arabica Coffee Beans

Siagian,

Napitupulu,

Ambarita

et al. 2023

Preprint

View full text Add to dashboard Cite

Different coffee drying technologies face complex task in ensuring an acceptable final seed moisture content. Drying technology of agricultural commodities aims to maintain and improve the quality of the agricultural products themselves. In addition to maintaining quality, especially from other bacterial attacks, it can last for a long time before further processing. Coffee commodities are promising for the welfare of coffee farmers. Drying technology plays a major role in determining the quality of coffee. Various drying models are applied including the traditional model that until now is still applied, direct drying under solar radiation. However, this drying process is less hygienic and requires a large area. Thus, one of the drying technologies that can accelerate drying time is to vary the air flow in the drying chamber so that the coffee can be determined to reduce the water content with a certain temperature. In this study, it was found that the moisture content of coffee beans dried using a dryer on air flow with variations of velocity in solar collector 1 (DB1) air velocity of 1.0m/s obtained the final mass = 732.249 gr, solar collector 2 (DB2) with air velocity 1.5 m/s obtained the final mass = 774.70 gr, solar collector 3 (DB3) with air velocity 2.0 m/s obtained the final mass = 855.10 gr, solar collector 4 (DB4) with air velocity 2.5 m/s obtained the final mass = 745.79 gr, and solar collector 5 (DB5) with air velocity 3.0 m/s obtained the final mass = 786.40 gr. Water Content DB1=12.0%, DB2=13.6%, DB3=18.5%, DB4=12.9% and DB5=15.2%. The time required for 25 hours with a maximum radiation of 586.9 w/m2, total heat utilized from solar radiation in 3 days =16.663128 MJ/m2. from the initial weight of 1500gr coffee bean samples and dried in five solar collectors with parallel simultaneously. The evaporated water content DB1=51.18%, DB2=48.35%, DB3=42.96%, DB4=50.28% and DB5=47.57%. Based on this research, it was found that the most optimum quality of coffee was by using solar collector 2 (DB2), namely with air flow of 1.5 m/s with average temperature in the drying box DB2=43.68°C, with the quality content of the coffee, Protein content=12.2%, Carbohydrate=22.8% and Free Fatty Acid (ALB) content=0.05%.

show abstract

“…For the DSAHS integrated into a dryer tunnel, García-Valladares et al [26] assessed the performance of 111.1 m 2 ; the useful energy was 3130 MJ, and the efficiency was 0.395 during three testing days. Ortiz-Rodríguez et al [27] determined the thermal performance of a hybrid direct-indirect solar air heater integrated into a tunnel dryer. The DSAHS had a 111.1 m 2 air solar collectors field, an indirect solar air heater of 92.4 m 2 of solar water collectors field, a 6 m 3 thermal storage tank, an air-water heat exchanger, and an auxiliary heater.…”

Section: Introductionmentioning

confidence: 99%

Annual Thermal Performance of an Industrial Hybrid Direct–Indirect Solar Air Heating System for Drying Applications in Morelos-México

2021

View full text Add to dashboard Cite

A theoretical–experimental annual analysis of a hybrid industrial direct–indirect solar air heating system performance for drying was conducted considering temperatures, useful energy Qu, efficiency η, and solar fraction SF. The direct solar air heating system located in Morelos, México, has flat-plate solar air collectors, and the indirect system has flat-plate solar water collectors, a thermal storage tank, a cross-flow fin, and a tube heat exchanger. A validated TRNSYS program modeled the process; the validation was carried out by comparing each component outlet temperature and useful energy with the respective experimental field data. The analysis considered annual usage over seven days a week, nine hours a day (from 09:00 to 18:00 h), and three operation modes. For the direct, indirect, and hybrid operation modes, the Qu values were 31.60, 55.19, and 75.18 MWh/yr; the annual η values were 0.44, 0.41, and 0.42; and the annual SF values were 0.45, and 0.73 for the indirect and hybrid mode, respectively. The hybridization of the direct–indirect solar air heating system increased annual performance by up to 58% in Qu and 42% in SF. The parametric analysis showed that a characteristic working nomogram of the hybrid system could be achieved, correlating the useful energy, efficiency, solar fraction, and operation temperature at a specified mass flow rate, and working temperature.

show abstract

Solar-LP gas hybrid plant for dehydration of food

Cited by 19 publications

References 45 publications

The Effect of Varying the Air Flow in a Solar Collector on the Quality of Arabica Coffee Beans

The Effect of Varying the Air Flow in a Solar Collector on the Quality of Arabica Coffee Beans

The Effect of Varying Air Flow Solar Collector on the Quality of Arabica Coffee Beans

Annual Thermal Performance of an Industrial Hybrid Direct–Indirect Solar Air Heating System for Drying Applications in Morelos-México

Contact Info

Product

Resources

About