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181 articles for “Refrigerant.”
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A Review of Thermal Distribution of All Air Airconditioning Systems
Abstract: Abstract Air conditioning is an important system for the comfort of human beings. The present paper is a review of the fundamentals of an air conditioning and the systems consisting of thermal distribution systems. Detailed study of the all air single duct and constant volume system has been carried out. Keywords: Air conditioning, all air system, thermal distributionCite this Article Badgujar AD. A Review of Thermal Distribution of All Air …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 1, 2017 · pp. 13–17 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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Theoretical Thermodynamic Investigation of Double Effect LiBr-H2O Vapour Absorption System Driven by Exhaust Gases of I.C. Engine and Simulated by EES Software
Abstract: Abstract This work presents a study of a Lithium Bromide-Water vapour absorption system used for automobile air conditioning system, this system using the exhaust waste heat of I.C. Engine. The effect of various parameters on coefficient of performance of Li-Br water vapour discussed. This study also illustrates various advantages of using VAS. The main purpose of this investigation is to explore the feasibility of using waste low grade energy driven …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 2, 2017 · pp. 38–46 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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Experimental Set Up of Optical Tomography Probe and Visualization of Characteristics of a Taylor Bubble
Abstract: Abstract Conventional methods for the detection of bubbles uses probes which physically protrude into the flow field and thus may affect the flow dynamics, thereby tethering the formation, development and flow of bubbles. In thermal power plant, it is rather difficult to physically see which type of two phase flow is happening in the pipe. In such a case, an optical tomography sees its application. Depending upon the type of …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 3, 2016 · pp. 1–14 Read article
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Molecular Interaction Study of Glycine in Aqueous Lactose Solution Using Volumetric, Acoustic and Viscometric Methods at Different Temperatures
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Density, viscosity, sound speed and refractive index of glycine in aqueous lactose solution at varying concentrations from 0.1035 to 1.0345 m at 298, 308, and 318 K have been determined using precalibrated bycapillary pycnometer, Ostwald’s viscometer and single frequency ultrasonic interferometer at 2 MHz frequency respectively. The derived acoustic parameters like apparent molal volume( ), apparent molal compressibility( ), specific acoustic impedance …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 3, Issue 1, 2012 · pp. 17–27 Read article
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Characterization and Stability Study of Synthesized Gold and Silver Nanoparticles
Abstract: A basic initial characterization and stability study of synthesised gold and silver nanoparticles was carried out. Silver nanoparticles were synthesised by modified Creighton's method. Gold nanoparticles were synthesised by Turkevich method. The synthesised nanoparticles were subjected to characterization studies using DLS, UV-VIS spectrophotometer, pH meter, and the size characterization was studied using Mie plot and NNLs software. The objective of the study being to check the stability of the nanoparticles …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 4, Issue 1, 2014 · pp. 33–38 Read article
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Boiling Heat Transfer Enhancement on Macro-, Micro- and Nano-scales
Abstract: This paper presents a review of investigations on boiling heat transfer enhancement on macro-, micro- and nano-scale surfaces and fluids by the authors at the Moscow Power Engineering Institute (MPEI) plus known results of other researchers. These investigations were conducted with the purpose of increasing safety and efficiency of power generating systems. The investigations were focused on such problems as effective cooling at high heat flux (1 MW/m2 and more), …
Published in Journal of Nuclear Engineering & Technology · Vol. 2, Issue 2-3, 2012 · pp. 1–10 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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PERFORMANCE STUDY FOR ACTIVE SOLAR STILLS BASED ON ENERGY METRICS: A SHORT REVIEW
Abstract: id of corresponding author: agashok26@gmail.comABSTRACTWe have superfluous amount of solar radiation available on the Earth which we can use for various purposes like conventional and non conventional uses. Among all application and utilization of solar energy, the basic utilization of solar energy is to produce neat potable water with the help of solar distillation method. This is because water is one of the prime elements for the survival on the …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 4, Issue 3, 2017 · pp. 21–26 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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Evaporative Cooling By Using Different Porous Materials
Abstract: The method of evaporative cooling involves raising the air temperature by causing water vapour in an airstream to evaporate. Waterneeds the latent heat of vaporisation to evaporate, and this heat is produced by ambient air and a drop in air temperature. A porousmedium is necessary for both direct and indirect evaporative cooling in order to allow heat and mass transfer between the medium'swater and the air moving through it, or …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 2, 2022 · pp. 29–37 Read article
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Effect of Different Cooling Pad Materials on the Performance of the Evaporative Cooler
Abstract: Air conditioning (AC) becomes the most necessary appliance in homes and offices in every developed and developing country for achieving the required thermal comfort condition. But the literature reveals that the excessive use of AC creates physiological discomfort such as headache, alleging symptoms (fever, cold, itching) chest pain, etc. The above mention issues may be mitigated up to a certain level by using an evaporative cooler instead of ACs. The …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 3, 2023 · pp. 31–35 Read article
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Post-harvest handling and quality loss of Indian major carps in the distribution channel of Noakhali district, Bangladesh
Abstract: Post-harvest loss of mrigal (Cirrhinus cirrhosus), catla (Catla catla), rohu (Labeo rohita) and kalibaush (Labeo calbasu) in different distribution channel of Noakhali district, Bangladesh were observed during the month of January 2015 to April 2015. Sensory evaluation method was adopted in order to gather information about quality loss of fish and existing handling condition at different stakeholder level. The observed fish were fresh at fisherman level but as the day …
Published in Research & Reviews: A Journal of Bioinformatics · Vol. 6, Issue 1, 2019 · pp. 9–19 Read article
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Fluorine Adsorbents in Water. A Compilation
Abstract: Fluorine constitutes 0.08% of the earth crust. This chemical element is found in the air, soil, rock, and water. Fluoride finds industrial application in the production of ceramics, pesticides, aerosol propellants, and refrigerants. Within the field of medicine, fluorides have been employed for several decades in the prevention of dental cavities. Scientific evidence affirms that fluoride is often harmful to health. Water is a very important vector of fluoride, which …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 14, Issue 2, 2023 · pp. 1–7 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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Nutrient Composition and Quality Evaluation of Composite Bread with Jackfruit (Artocarpus heterophyllus) Seed Flour
Abstract: Jackfruit (Artocarpus heterophyllus) seeds were used to develop composite bread; and nutritional quality and sensory properties of the resulting breads were evaluated. The percentage of jackfruit seed flour (JSF) used in preparing the bread was 5%, 10%, 15% and 20%. From the proximate analysis it was found that the whole wheat flour and JSF contained 12.56% and 13.14% of protein, 0.85% and 0.80% of fat, 0.62% and 1.82% of ash, …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 6, Issue 2, 2017 · pp. 40–48 Read article
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Cytological Studies on Paeonia emodi Wall. ex Royle: An Important Medicinal and Ornamental Plant of Kashmir Himalaya
Abstract: Paeonia emodi, an endangered species, was examined for pollen mother cell (PMC) meiosis from both wild and transplanted populations. Buds of suitable size were collected from all the three study sites and fixed in ethanol:acetic acid (1:3) for 24 h and stored in 70% alcohol under refrigeration. For slide preparation, the anthers were squashed in 2% acetocarmine. The results revealed the mean meiotic chromosome configurations of the species as 2n …
Published in Research & Reviews : Journal of Herbal Science · Vol. 6, Issue 1, 2017 · pp. 1–4 Read article
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Development of Alcohol-free Herbal Mouthwash Having Anticancer Property
Abstract: AbstractMouthwash is a liquid accessory to clean and maintain the health of our teeth for oral hygiene. Nowadays, we use commercial mouthwash which contains many chemical compounds like sodium lauryl sulfate, thymol, methyl salicylate, benzalkonium chloride, hydrogen peroxide, alcohol which are harmful to our buccal cavity. We have developed a mouthwash with some common food materials and herbs and which can replace costly chemicals like alcohol, coloring agents and preservatives …
Published in Research & Reviews : Journal of Herbal Science · Vol. 2, Issue 1, 2013 · pp. 7–12 Read article
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Enhancement of Lycopene Content in Tomato Pulp by the Addition of Tomato Peel Paste—Optimization and Utilization
Abstract: In tomato processing industry tomato peel is discarded as waste, it is rich in lycopene which is a phytochemical. This paper was focused on the utilization of tomato peel in tomato paste and optimization of the process using Response Surface Methodology (RSM). The levels of skin paste and pulp were taken as independent variables whereas lycopene content and Overall Acceptability (OAA) were taken as responses. Numerical optimization was used to …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 9, Issue 2, 2020 · pp. 31–37 Read article