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94 articles for “refrigerator performance”
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Association of Vitamin D Binding Protein BP rs2282679 Gene Polymorphism and Serum Levels of Vitamin D in Patients with Vitiligo
Abstract: For vitamin D to have an impact, the vitamin D receptor (VDR) must be expressed and activated in the nucleus. The VDR has several known genetic variants. Biological impacts can be caused by changes in DNA sequences known as "polymorphisms" that are common in the population. Vitiligo is a disease that causes loss of skin color in patches, and it is a chronic (long-lasting) autoimmune disorder loss of color. The …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 14, Issue 2, 2024 · pp. 45–52 Read article
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MODELLING OF SOLID DESICCANT DEHUMIDIFIER WHEEL
Abstract: Abstract Desiccant cooling system performance, its energy saving potentials, its modelling techniques have subject of intense interests for HVAC Engineers. These systems have yielded number of system designs and simulation methods for cooling methods. The heat and mass transfer phenomenon, governing equation for Desiccant dehumidifier wheels are elaborated in details. The mathematical modelling of desiccant wheel is required to increase its performance by using novel designs at low regeneration temperatures. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 2, 2016 · pp. 49–60 Read article
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Assessment of Solar PV Generation Potential: A Case Study of RAC Section in Jaipur Division of North Western Railway, India
Abstract: Generation of electrical energy through conventional means is costly, creates environmental pollution, and demand a high level of maintenance and is also going to end one day. As a result, it is critical to tap into the previously untapped potential of ecologically friendly renewable energy resources. To address this issue, the current study presents a grid-connected PV system that is efficient, long-lasting, and environmentally beneficial. at a 650 m2 Refrigeration …
Published in Journal of Thermal Engineering and Applications · Vol. 9, Issue 1, 2022 · pp. 1–8 Read article
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Effective efficiency of return flow solar air heater
Abstract: In this paper, the effective efficiency of a return flow solar collector with artificial roughness in the form of V shaped ribs is presented as a function of parameters pertaining to roughness like angle of attack (α), and relative roughness height (e/D) and other relevant operating parameters. Analytical methods were used & governing energy balance equations are used to evaluate results. Plots on these aspects have been presented and discussed …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 3, 2017 · pp. 27–32 Read article
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Strain Improvement of Lactobacillus casei Strain Shirota for Production of Bacteriocin and Its Utilization as a Biopreservative
Abstract: Food is a great concern for humans as well as for animals; also because as we buy vegetables and fruits from the market and after some days with or without refrigeration, they start getting spoiled. To minimize the spoilage and make them preserve for a long period, we did this research on preservation of vegetables and fruits using lactobacillus casei isolated from the Yakult and testing in vitro against spoilage …
Published in Research and Reviews : Journal of Dairy Science and Technology · Vol. 9, Issue 2-3, 2020 · pp. 18–31 Read article
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Heat Transfer Augmentation in Twisted Rectangular Channel
Abstract: Abstract The best way to profoundly and scientifically concentrate the heat exchange upgrade of nanofluids under turbulent course through twisted rectangular channels under consistent heat flux conditions on every one of the walls is to look at the marvel numerically. The nanofluids are fundamentally the strong nanoparticle of CuO suspended in water arranged chemically. CFD investigation is led utilizing FLUENT programming by the limited volume technique. The limit conditions connected …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 2, 2017 · pp. 47–55 Read article
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Effect of Minimum Quantity Lubrication on temperature dissipation in machining of AISI 4130
Abstract: Abstract: Minimum Quantity Lubrication (MQL) has good cooling effects and is gaining importance due to environment friendly machining. MQL proving to be an alternative to flood cooling besides it reduces the cost. The present study is based on MQL parameters performance on temperature of grinding zone. Experiment results were compared of three different vegetable oils. It was found out if with controlled grinding environment MQL can be at par with …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 3, 2017 · pp. 13–20 Read article
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Study of technical and economic assessment of solar-assisted and thermoelectric air-conditioning technologies
Abstract: This study presents an integrated technical and economic assessment of solar-assisted absorption and thermoelectric air-conditioning technologies for residential cooling applications. A comprehensive methodology combining mathematical modelling, experimental characterization of thermoelectric modules, numerical simulation, and economic optimization was developed to evaluate the performance of both cooling systems. The solar-assisted system employs single-effect LiBr–H₂O absorption chillers operating under water-cooled and air-cooled configurations, simulated using TRNSYS and Engineering Equation Solver (EES), while the …
Published in International Journal of Energy and Thermal Applications · Vol. 4, Issue 2, 2026 Read article
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Evaluating the Performance of a Smart VCR System Using Python for Data Analysis Based on IoT
Abstract: Commercial buildings use a significant amount of electricity, with around 60% to 80% being attributed to the HVAC system. Implementing IoT and smart sensors can help reduce this consumption by 10% to 30%. To lower the electricity usage of air conditioners, a study has proposed an IoT-based smart VCR system with sensors, meters, gateway, and cloud computing modules. This system is designed to collect data and regulate the VCR system …
Published in Journal of Control & Instrumentation · Vol. 15, Issue 2, 2024 · pp. 7–23 Read article
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Exergetic Analysis of Single Effect LiBr-Water Absorption Cooling System
Abstract: Abstract This paper presents the exergy analysis of single effect LiBr-Water absorption cooling system. The work is committed to the study, the evaluation and distribution of the destroyed exergy for each component constituting this kind of system. The thermodynamic models, derived using the first and second laws of thermodynamics, are employed in a computer program using the engineering equation solver (EES) software to perform the calculations. Influence of various operating …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 2, 2016 · pp. 41–48 Read article
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Investigation of free convection heat transfers in an attic shaped eclosure
Abstract: Absrtact Numerical investigation of free convection heat transfers in an attic shaped enclosure with differentially heated two inclined walls and filled with air is performed in this study. The left inclined surface is uniformly heated whereas the right inclined surface is uniformly cooled. There is a heat source placed on the right side of the bottom surface. Rest of the bottom surface is kept as adiabatic. Finite volume based commercial …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 2, 2017 · pp. 13–26 Read article
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Experimental Analysis of a Novel Parabolic Trough Receiver for Direct Steam Generation
Abstract: Abstract In this paper, experimental study of a parabolic trough collector and novel receiver with concentric tubes (C-PTR) for direct steam generation is presented. The performance of the C-PTR system is extensively studied by varying the parameters such as the direct normal irradiance, the mass flow rate, the type of circulation and the amount of phase change material (PCM). The maximum thermal efficiency achieved using C-PTR is averaged about 58% …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 1, 2016 · pp. 35–40 Read article
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Automation of Heat Exchanger System using DCS
Abstract: Heat exchangers are built for efficient transferring heat from one fluid to another. They have an extensive demand in areas such as petroleum, refineries, chemical plants, petrochemical plants, natural gas processing, refrigeration, power plants, air conditioning, space heating and process industry. Automation of Heat exchange can be done optimally using PID Block. Using PID function block the outlet fluid temperature can be maintained as desired. The automation of Shell and …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 1, 2014 · pp. 22–28 Read article
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Solar Humidity Control Unit with Hot Water Generation
Abstract: Abstract Our country lying in tropical region predominantly has high humidity in air in nearly three-fourth span of a year. Maintaining indoor comfort conditions in these conditions become expensive. This paper presents the design of an all-in-one solar-powered humidity control unit which will also provide hot water in the building. The configuration consists of indoor and outdoor units provided with evaporative coolers and desiccant units. The outdoor unit is coupled …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 3, 2015 · pp. 5–10 Read article