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1357 articles for “Calculations”
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A Comparative Study on Evolutionary Algorithms to perform Isogeometric Topology Optimisation of Continuum Structures using Parallel Computing
Abstract: The optimization of computational performance along with the topology optimization of structures is the main focus of this study. The computational performance of the program is enhanced using two search engines in parallel. The search process is done using a least pop size which has reduced the number of computations required to optimize the objective function. The geometry can be exactly represented using isogeometric basis functions where the same basis …
Published in Journal of Aerospace Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 51–58 Read article
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Strength Analysis of Topside Supports on FPSO Hull
Abstract: AbstractThis paper is performed to determine strength and endurance capacity of topside supports and underlying hull structure on Floating Production Storage Offloading (FPSO) platform. Support stools shall be installed on every intersection between longitudinal bulkheads and transverse frames. Strictly, the analysis is relevant to topside supports and hull structure in the mid-ship area away from the moon-pool, but modification of the results to be representative for the moon-pool area is …
Published in Journal of Offshore Structure and Technology · Vol. 5, Issue 2, 2018 · pp. 22–38 Read article
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Design and Development of Compact Humidifiers for Bench-top Chambers
Abstract: All products which are used in daily life have to serve in different climatic condition globally such as temperature, rain, humidity, etc. Hence, the products have to be tested under these conditions with the help of climatic chambers. There is a demand for a smaller version of climatic chambers called as bench-top chambers. Bench-top chambers require a compact humidifier, which can work on all humidity requirements set by the user. …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 2, 2018 · pp. 26–35 Read article
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Swift heavy Ion Irradiation Effects on Structural and Spectroscopic Properties of Nanocomposites of Polypyrrole Nanotubes and Silver Nanoparticles
Abstract: Polypyrrole nanotubes-silver nanoparticle nanocomposites (PPy-NTs:Ag-NPs) have been synthesized by in-situ reduction of silver nitrate (AgNO3) to suppress the agglomeration of Ag-NPs. The synthesized nanocomposite has been irradiated with 100 MeV Si9+ ion beam. The structural and spectroscopic properties of the nanocomposites after irradiation have been studied by SEM, XRD, Raman and UV-vis spectroscopy. Decrease in size of the nanotubes has been observed from SEM micrographs due to swift heavy ion …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 2, 2018 · pp. 1–6 Read article
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Synthesis and Characterization of CeO2-ZrO2 Nanocomposites
Abstract: CeO2-ZrO2 nanocomposites were prepared by hydrothermal method and characterized by using XRD (X-ray diffractometer) to study the structural analysis of the prepared nanocomposites. The as-prepared samples were further annealed at 150º C and 300º C. From the structural studies crystal size and lattice parameter was calculated. FTIR analysis confirms the results of vibrational spectra and XPS, EDAX analysis confirms the elements presents in the composites. Effect of annealing in frequency …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 21–32 Read article
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Variation of PbS Layer Thickness in Colloidal Quantum Dot Solar Cell
Abstract: The broad tuning of semiconductor band structure is proposed for colloidal quantum dot via the quantum size effect by several workers. In this paper, we define brief details on effect of the thickness of lead sulphide (PbS) layer as the absorbing photovoltaic materials in the colloidal CQD solar cell and show their effect on the performance of the solar cell. The calculated results shows that with lower thickness of 180 …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 1, 2019 · pp. 1–4 Read article
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Solar Assisted Half Effect Refrigeration System
Abstract: Solar assisted half effect refrigeration system has been studied comprehensively. The effect of various parameters on overall performance of the system has been done quantitatively. In addition to this, solar thermal calculations are performed and its contribution in saving energy is also assessed.
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 2, 2019 · pp. 27–31 Read article
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Enhancement in the COP of Thermoelectric Cooler Used for Cooling of Small Electronic Circuits
Abstract: Amidst growing environment concern, the need for alternative methods of cooling is on the rise, demanding higher intervention of technological advances. Conventional cooling systems working on CFC refrigerant pose threat to environment. The present work deals with performance investigation of thermoelectric cooler based on Peltier effect. Air cooling and water cooling systems are studied involving several parameter modifications. From the experimental work it is evident that optimum cooling is achieved …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 6, Issue 3, 2019 · pp. 20–23 Read article
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Effect of Halloysite Loading Rate on Mechanical Properties and Thermal Stability of HNT/Epoxy Nanocomposite
Abstract: Halloysite nanotube (HNT) based polymer matrix composites were fabricated through casting using ultrasonication, followed by compression moulding method. In this research, HNT is taken into account as reinforcement, dispersed into the diglycidyl ether of bisphenol-A epoxy (LY 556). HNT/x (x=0 to 5 wt.%) composites were analysed according to the mechanical properties like tensile, flexural, hardness and impact. It has been found that thermal stability has been appreciably improved and calculated …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 2, 2019 · pp. 31–45 Read article
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Instant Cooling Of Sugar Cane Juice
Abstract: This work has been carried out to bring out the reliable solution for chilling/cooling of sugar cane juice instantly (as less time as possible) after being extracted from sugar cane and considering hygiene. Sugar cane juice is a highly consumed beverage across many countries, mostly in summer seasons due to its nutritional values and refreshing nature while it’s chill. In this work design of the model is done to cool …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 1, 2020 · pp. 1–4 Read article
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Hydrothermal synthesis of ZnS for efficient photodegradation of Malachite green
Abstract: In this work, ZnS nanoparticles were prepared by hydrothermal method. Various characterization techniques such as X-ray diffraction (XRD), UV-visible optical spectroscopy and FT-IR spectra were used to study the structural, composition and optical properties of synthesized nanoparticles. The XRD pattern showed that the prepared ZnS nanoparticles have a cubic zinc blende structure. The band gap is calculated from absorption spectra with the help of Taucplot and is found to be …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 1, 2020 · pp. 11–15 Read article
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Design and Development of Centralized Air Conditioning Plant Model with Water Cooled Chiller
Abstract: The work consists of how a proposed centralized air conditioning is designed and its criterion for a new building in college. Central Air Conditioners working is a complex and cumbersome topic which takes a lot of time and effort. It’s a difficult task to explain the entire parts, its working and maintenance. Here an effort is made to explain about the designing of Ducts used in a central A/C. A …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 3, 2020 · pp. 9–17 Read article
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A Research on Thermal Analysis of FSAE Brake Disc
Abstract: Since we all know brakes area unit the foremost vital a part of the vehicles the disc brake is a wheelbrake that slows rotation of the wheel by the friction caused by pushing brake pads against a brakedisc with a set of calipers. Braking system represents one in every of the foremost basic safetyimportant parts in trendy vehicles. Brake absorbs kinetic Energy of the rotating parts (Wheels) andthe energy is …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 1, 2021 · pp. 1–8 Read article
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Modelling and finite element analysis of thermo acoustic refrigerator
Abstract: In this work, the standard modified thermo-acoustic refrigerator (TAR) is created. It has a stack, heat exchanger, thermocouple, resonator tube, and an acoustic driver (loudspeaker). The effects of a few design factors were investigated for a thermo-acoustic refrigerator system, including wave patterns, frequency, and heat exchanger. It was discovered that a sine wave pattern produced better cooling results than the other wave patterns examined. The heat exchanger's addition greatly increases …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 3, 2022 · pp. 31–46 Read article
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Assessment of HVAC AHU, Ventilation and Air Conditioning systems using ARAS Method
Abstract: HVAC gadget is largely an assembly of various sorts of equipment hooked up together to provide heating and cooling alongside indoor climate manipulate. The air coping with unit (AHU) is the heart of important air con. HVAC structures encompass mechanical, electric and I & C components to provide consolation to the occupants of a constructing/location or to defend materials, products or objects housed in the location. It collects outside air …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 3, 2022 · pp. 1–8 Read article
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Experimental investigation of solar sill by incorporating sensible and latent heat storage materials
Abstract: The main obstacle to human life in the modern age was the lack of access to and improper distribution of potable water on earth. Despite the fact that demand for potable water is skyrocketing due to population growth and industrial exploitation, supply levels are essentially steady. Due to its simplicity in construction, ease of maintenance, techno-economic advantages, and eco-friendliness, solar is still regarded as one of the best possible options …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 1, 2023 · pp. 7–21 Read article
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Application of ANSYS in heat transfer characteristics of straight hollow tubes
Abstract: The mess analysis of straight hollow tubes have been done by many analysis software but out of all ANSYS be considered as the better due the provision of change in parameters. Therefore in the present study, ANSYS Fluent is used for the analysis of the straight tubes. ANSYS Workbench is used for the analysis. Geometry tool Design Modeler is then applied for the design of the tubes. The solution of …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 1, 2023 · pp. 41–52 Read article
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Advantages of Having DP Class 3 for Well Stimulation Vessels (WSVS) Compared to Existing DP Class 2 Possibility and Analysis of Failures of DP2 Capable WSVS
Abstract: An intervention performed on an oil or gas well to increase production by improving the flow of hydrocarbons from the reservoir into the well bore is well stimulation. The improvements in completion treatmenttechniques like Well stimulation have impacted recovery rates of hydrocarbons such that there is a possibility to pull tens of millions of barrels of oil out of a well, all whilekeeping that well online for 20 years.To perform …
Published in Journal of Offshore Structure and Technology · Vol. 7, Issue 3, 2020 · pp. 30–45 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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Detecting Land Use and Land Cover and Land Surface Temperature Change in Lilongwe City, Malawi
Abstract: In south east Africa, Lilongwe city had an observed rapid population growth over the past decade and a half. The same city also had recently observed increased temperatures and adverse weather conditions such as occassional heavy storms which caused severe flooding in January 2017 and December 2017. It was therefore thought wise to do a land use and land cover (LULC) study of the city over time to detect land …
Published in Journal of Remote Sensing & GIS · Vol. 9, Issue 2, 2018 · pp. 17–26 Read article