A standalone PV operated DC milk chiller for Indian climate zones

Sidney, Shaji; Thomas, Jose; Lal, D. Mohan

doi:10.1007/s12046-020-01334-0

Cited by 9 publications

(8 citation statements)

References 22 publications

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“…In the PV sizing, the yield is estimated through the solar fraction (SF) (Sidney et al 2020 ). For this reason, the PVsyst performance analysis considers the calculation of this parameter.…”

Section: Resultsmentioning

confidence: 99%

“…The PVsyst software was used in the simulation to have accurate data on the PV system performance. This tool allows a detailed sizing of the general performance, energy production, and the main losses related to the components and climatic parameters in off-grid and on-grid PV systems (Manoj et al 2017 ; Sidney et al 2020 ). The load energy specified in the PVsyst software is the direct current energy before the inverter, for this reason, this parameter was not considered in the evaluation.…”

Section: Methodsmentioning

confidence: 99%

“…Using the PVsyst software, we consider annual solar radiation data to produce a fixed roof with an optimal tilt angle of 15°. This angle was fixed as a function of the maximum solar radiation that could be captured through the PV module (Sidney et al 2020 ). Moreover, our PV modules must have a north orientation with azimuth 0°, since the study area is located in the southern hemisphere (Fig.…”

Section: Methodsmentioning

confidence: 99%

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Design of a point-of-care facility for diagnosis of COVID-19 using an off-grid photovoltaic system

Alva-Araujo

Escalante-Maldonado

Ramos

2021

Environ Dev Sustain

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Design of a point-of-care facility for diagnosis of COVID-19 using an off-grid photovoltaic system

Alva-Araujo

Escalante-Maldonado

Ramos

2021

Environ Dev Sustain

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“…Microbiological contamination of milk can occur during and after milking and the multiplication of microorganisms can be accentuated if cooling during storage is not appropriate. The cooling of milk following milking at a temperature below 4ºC (Sidney, Thomas & Dhasan, 2020), in cooling tanks and under adequate hygiene conditions, is undoubtedly one of the main points when it comes to microbiological quality. In addition, higher bacterial counts are observed in tanks with higher storage temperature (Gonzalo, Juárez, García-Jimeno & De La Fuente, 2019) and, due to its nutritional richness, milk becomes an important culture medium, enabling the rapid development of different types of microorganisms, such as mesophilic aerobic bacteria.…”

Section: Temperature and Microbiological Quality Of Milk In Community Tanksmentioning

confidence: 99%

Composition and microbiological quality of raw milk refrigerated in community tanks

Santos

Dallago²,

Dumont³

et al. 2021

RSD

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Milk is rich in nutrients, but several factors in the production system interfere with its quality. The objective of this study was to analyze the composition and microbiological quality of raw milk stored in community tanks from the municipality of Aricanduva – Minas Gerais. Samples were collected from eight community tanks at different properties. The milk composition and temperature were analyzed using the digital milk analyzer. The total count of aerobic mesophilic microorganisms was performed at the Laboratory of Science and Technology of Products of Animal Origin, Department of Animal Science, Federal University of Vales do Jequitinhonha and Mucuri, Diamantina – Minas Gerais. The data obtained were compared to the values established by Normative Instruction (IN) n° 76, by means of Student's t-test and Wilcoxon's non-parametric test at the level of 5% of significance. The average levels of fat (3.55 g/100g), protein (3.00 g/100g), lactose (4.45 g/100g) and total solids (11.76 g/100g) were within the standards minimum required. The content of defatted solids (8.21 g/100g) was the limiting factor to the compliance with IN76, with an average value lower than that established (8.40 g/100g). The temperature of the milk was higher than the standard required by the legislation and the count of mesophilic microorganisms did not differ from the legislation. It is concluded that the composition of raw milk stored in community tanks in the municipality of Aricanduva – Minas Gerais, compared to IN 76, did not fully met the legislation in all evaluated parameters.

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“…convert solar energy to cold energy stored in ice. De-Blast et al, 12 Torres-Toledo et al 13 and Sidney et al 14 have used ice thermal energy for storage of milk without depending on battery backup. The use of DC compressors in refrigeration systems with inbuilt ice bank tank as a cold energy storage for milk chilling is of great importance.…”

Section: Introductionmentioning

confidence: 99%

Charge optimisation of a solar milk chiller with direct current compressors

Sidney

Prabakaran

Lal

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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In view of promoting the utilization of solar photo-voltaic energy for milk chilling application a custom designed milk chiller with DC compressors was fabricated. Two different DC compressors were used operating with HFC-134a and HC-600a refrigerants to ascertain the performance of HFC and HC refrigerants when used in solar powered application. In view of optimizing the performance of both refrigerants, charge optimization was experimentally carried out for both refrigerant circuits. The optimum charge was obtained based on the maximum coefficient of performance and exergy efficiency. When comparing ice formation and coefficient of performance, the HC-600a refrigerant circuit was lower than that of HFC-134a circuit. It was also observed that the total exergy destruction experienced was maximum in the HFC-134a circuit than that of the HC-600a circuit. The magnitude of exergy destruction was found to be maximum in the compressor and then followed by the condenser, evaporator and finally the capillary for both refrigeration circuits. This study showed an efficient way for using the solar power for operating a milk chiller with DC compressors and with ice bank tank to avoid the dependency on batteries.

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A standalone PV operated DC milk chiller for Indian climate zones

Cited by 9 publications

References 22 publications

Design of a point-of-care facility for diagnosis of COVID-19 using an off-grid photovoltaic system

Design of a point-of-care facility for diagnosis of COVID-19 using an off-grid photovoltaic system

Composition and microbiological quality of raw milk refrigerated in community tanks

Charge optimisation of a solar milk chiller with direct current compressors

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