Environmental and economic analysis of novel hybrid active greenhouse solar dryer with evacuated tube solar collector

Singh, Pushpendra; Gaur, Manoj Kumar

doi:10.1016/j.seta.2021.101428

Cited by 40 publications

(17 citation statements)

References 28 publications

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“…Environmental analysis is becoming one of the important aspects in the designing process of any system. It shows the impact of the build system on the environment through different indicators such as embodied energy (E E ), energy payback time (EPBT), carbon dioxide (CO 2 ) emission, CO 2 mitigation, and carbon credit earned (CCE) (Chauhan et al, 2018; Kumar et al, 2021; Singh & Gaur, 2021; Tiwari et al, 2020; Vijayan et al, 2019).…”

Section: Methodsmentioning

confidence: 99%

“…The payback period was reported to be 1.6 years for an estimated lifetime of 25 years. Singh and Gaur (2021) reported that the lifetime CO 2 mitigation potential of an active-type hybrid greenhouse dryer with and without evacuated-type collectors varied from 50.49 to 135.04 tons and 26.57 to 49.58 tons, respectively.…”

Section: Practical Applicationsmentioning

confidence: 99%

“…The payback period was reported to be 1.6 years for an estimated lifetime of 25 years. Singh and Gaur (2021) reported that the lifetime CO 2 mitigation potential of an active‐type hybrid greenhouse dryer with and without evacuated‐type collectors varied from 50.49 to 135.04 tons and 26.57 to 49.58 tons, respectively. The reduction in the drying time for ginger, tomato, and bottle gourd was 34.09, 47.36, and 61.9%, respectively with an estimated payback time of 1.79, 0.69, and 2.87 years.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigations on latent heat storage based modified mixed‐mode greenhouse groundnuts drying

Shimpy

Kumar

Sahdev

et al. 2022

Food Processing Preservation

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This work explores the effect of latent heat storage on the performance of a passive‐type mixed‐mode greenhouse dryer for groundnuts drying. Experiments were conducted for mixed‐mode greenhouse groundnuts drying (MMGGD), modified mixed‐mode greenhouse groundnuts drying (MMMGGD), and open sun groundnuts drying (OSGD) under the climate of Hisar (India). Average convective heat transfer coefficients for MMGGD, MMMGGD, and OSGD were 0.738, 0.607, and 0.555 W/m2 °C, respectively, and the respective average evaporative heat transfer coefficients were 113.304, 41.483, and 14.266 W/m2 °C. Energy and exergy efficiencies were found higher for MMMGGD, whereas the specific energy consumption was found lower as compared to MMGGD. Statistical analysis has shown the appropriateness of the page model for predicting the thin‐layer drying behavior of groundnuts for MMGGD, MMMGGD, and OSGD. The lower value of energy payback time (4.47 years) and the higher value of CO2 mitigation (953.299 tons) for MMMGGD show the environmental suitability as compared to MMGGD. Practical applications The present study focuses on the development of drying systems to prevent post‐harvest losses in groundnuts due to moisture and uncontrolled weather conditions. The temperature range of the proposed modified mixed‐mode greenhouse dryer is suitable for drying for most of the agricultural commodities. This drying system can be used for a range of food crops in different small and medium industries. Due to electrical independence, the proposed system seems best suited for small farms and farmers in remote and rural areas. The modified mixed‐mode greenhouse may also be used as a field‐based storage house for grains and freshly harvested crops.

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Section: Methodsmentioning

confidence: 99%

Section: Practical Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental investigations on latent heat storage based modified mixed‐mode greenhouse groundnuts drying

Shimpy

Kumar

Sahdev

et al. 2022

Food Processing Preservation

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“…The value of S b can be given as where S kg = savings/kg and M d = mass of dried product/batch. The value of S kg can be given as follows [ 118 ]: where C b = market cost of the branded dried product and C sd = cost of one kg of dried product. The value of C sd can be given as where C dp = cost of fresh product per kg of dried product and C s = drying cost/kg of dried product, whose values can be calculated as where C fp = cost of fresh product, M i = initial mass of product/batch, M d = mass of dried product/batch, C a = annualised cost, and M y = mass of product dried/year.…”

Section: Appendixmentioning

confidence: 99%

Performance Assessment and Modeling Techniques for Domestic Solar Dryers

Shimpy

Kumar

2023

Food Eng Rev

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Solar dryers have always been criticized for their lower performances. There are numerous ways to define the performance of a solar drying system such as thermal performance, drying kinetics, environmental aspects, economic evaluations, and quality of the dried product. Different modeling techniques have also been developed to design and analyze solar dryers and drying processes. This article presents a systematic, comprehensive, and state-of-the-art overview of various performance indicators and modeling techniques used for the evaluation and analysis of solar dryers, especially domestic and low cost solar dryers. Environmental analysis has severe global implications, and product quality is one of the biggest concerns of consumers. But the environmental impact and product quality assessments for domestic solar dryers are observed to be rarely reported in the literature. The use of modeling techniques in solar drying has changed the way of analyzing any thermal system. Here, an attempt is made to establish an overall assessment criterion for domestic solar dryers and to give a one-stop solution for researchers and users around the world.

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“…Solar energy is the most important natural resource because has outstanding advantages, such as vast availability, inexhaustibility, environmental friendliness, extensive distribution and provides various energy as benefit by transform to photovoltaic, thermal, and electric energy. (Khan et al, 2018; P. Singh & Gaur, 2021).Solar [3] collector is a well-known solar thermal energy conversion device that absorbs solar energy and converts it to a flowing fluid (water or air). The most widely used solar collectors involving evacuated tube solar collectors (ETSC), flat-plate solar collectors (FPSC), and compound parabolic concentrators (CPCs) as discussed by Kalogirou (Kalogirou, 2004).…”

mentioning

confidence: 99%

Experimental Study of the Solar Air Heater Performance with Evacuated Tubes Connected in Series and Involving Nano-Copper Oxide / Paraffin Wax as Thermal Storage Enhancer

Elbrashy

Abou-Taleb

El-Fakharany

et al. 2022

Preprint

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The investment of solar energy in life applications has become mandatory in order to maintain a clean environment and reduce the use of fossil fuel. In this work, the performance of solar air heater is aimed to be improved with the help of evacuated tube solar collectors. To achieve this purpose, a system consisting of 5 linked collecting panels was designed, fabricated, and experimentally tested. Each panel included a glass-evacuated tube with two concentric aluminum tube installed inside. The system was reinforce by adding paraffin wax as a PCM and boosting its thermal conductivity by incorporating it with copper oxide nanoparticles CuO. The performance was investigated with and without Nano enhancer phase change material NE-PCM at five mass flow rates (0.006-0.008-0.05-0.03-0.01 kg/s). Experimental results revaluated that the highest temperature was recorded as 116°C at a mass flow rate of 0.006 kg/s. The maximum thermal efficiency with storage material was 38% at 0.05 kg/s, and the pressure drop was about 2.2kPa.

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Environmental and economic analysis of novel hybrid active greenhouse solar dryer with evacuated tube solar collector

Cited by 40 publications

References 28 publications

Experimental investigations on latent heat storage based modified mixed‐mode greenhouse groundnuts drying

Experimental investigations on latent heat storage based modified mixed‐mode greenhouse groundnuts drying

Performance Assessment and Modeling Techniques for Domestic Solar Dryers

Experimental Study of the Solar Air Heater Performance with Evacuated Tubes Connected in Series and Involving Nano-Copper Oxide / Paraffin Wax as Thermal Storage Enhancer

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