Search
871 articles for “Calculations”
-
Parametric Study of Parabolic Trough Solar Collector System: A Review
Abstract: The detailed thermal analysis of a parabolic trough collector (PTC) was carried out to predict the thermal performance. The analysis is based on the established theory of PTC—the radiation absorption, heat loss from the collector, and temperature distribution on the plate. An analytical program, suitable for use on a digital computer is developed for the purpose of studying the hourly behavior of a solar collector. The exergy output is optimized …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 1, 2015 · pp. 46–50 Read article
-
Design of Absorption and Adsorption Cooling Systems for Truck Cabin Using Exhaust Heat
Abstract: AbstractThe present work is focused towards the review of the work done in the field of automobile air conditioning and design of proposed air-cooling system for the cabin of the truck using waste heat from the exhaust. The present cooling systems run on engine power and consume around 10% of the total power produced by the engine and thereby increase fuel consumption. From heat balance, it is observed that around …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 2, 2019 · pp. 26–34 Read article
-
Design and Simulation of Solar, Wind, Biomass Hybrid Power Generation for Remote Island
Abstract: AbstractIn Bangladesh, there are lots of islands located near the Bay of Bengal. Saint Martin is one of the most popular and populated islands among them. It is situated 9 km south of Bangladesh land and it has around 8000 people live in there. Though Saint Martin is a small island, it has a large power demand. For this huge power demand, the diesel power generator cannot full fill the …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 3, 2019 · pp. 47–58 Read article
-
Mapping the Vulnerabilities of Coastline Cities and Communities in Africa to Adapt to Climate Change: A Study of Lagos-Nigeria
Abstract: The Lagos coastline is active in nature and is located about less than six feet above sea level and houses about half of 15 million people in Lagos state, and is vulnerable to changes in coastline due to flooding and erosion. Climate change has aggravated this; sea-level rise will increase the risk of storm surge flooding, and coastal erosion threatening coastal cities. The annual rainfall along the coastline of Lagos …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 1, 2020 · pp. 44–57 Read article
-
Effects of Rotor-Blade Deformation onto Performance of Domestic Wind Turbines
Abstract: Paper is focused on the influence that blade deformations by torsion and bending due to drag, lift, and gravitational effects has on the performance of small wind turbines. A blade model of stiff finite elements connected by rotating junctions is used. Mechanical deformations are simulated by controlled gravity and torsional forces, and their effects are measured through the response of the wind turbine. Tests have been run before and after …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 12, Issue 1, 2021 · pp. 27–42 Read article
-
A Comprehensive Energy Audit for Energy Efficiency Improvement in Commercial Building in Bangladesh
Abstract: As a developing country, Bangladesh is developing rapidly due to the increase in industry and technology. However, the country has been facing an energy crisis for many years to meet growing demand. Gradually, the gap between energy supply and demand is getting bigger and bigger. An effective way to close the gap is to conduct regular energy audits of all departments to help identify losses and wastes and provide room …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 12, Issue 2, 2021 · pp. 12–40 Read article
-
Analysis of shading and energy generation by PV overhang using different models
Abstract: This paper presents the shading and energy generated by photovoltaic integrated overhangs in a building. The air temperature is greatly raised by sunlight entering through glass facades and windows that are not shaded. The overhang decreases the sunlit area of the windows thus decreasing the inside room temperature which decreases the requirement of cooling the rooms. The energy production by the photovoltaic modules has been calculated using three popular energy …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 13, Issue 3, 2022 · pp. 1–16 Read article
-
Synthesis and Study of Different Thioamides as Corrosion Inhibitors
Abstract: Many organic compounds having electron rich atoms in their structures, such as nitrogen, and sulphur are widely use in lubricating additives, in the oil industry to minimize corrosion. The presence of electron rich atoms in the molecules increases its ability to form coordinate covalent bonds with the metal atoms, involved in the corrosion environment. Compounds based on fatty amines, aromatic amines, imidazoline, diamidazoline, and fatty amides are now, uses as …
Published in Journal of Catalyst & Catalysis · Vol. 3, Issue 3, 2016 · pp. 18–25 Read article
-
Role of Solid Acid Catalyst in Isopropylation Reaction
Abstract: Cumene synthesis was carried out by the reaction of benzene with isopropyl alcohol in the vapour phase over rare earth metal modified 13X zeolite. Zeolite modification was done by exchanging sodium ions of the zeolite with cerium ions to vary the acidity of the catalyst in the range of 0.25‑1.36 meq/g. The synthesis was carried out over a wide range of operating conditions. The synthesis conditions were optimized by studying …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 2, 2015 · pp. 19–26 Read article
-
Performance of Polyster Fibre Reinforced Concrete
Abstract: The present work deals with the results of experimental investigations on Recron 3s Polyester fibre reinforced concrete. Effect of these fibres on various strengths of concrete are studied. Firstly 0.1% fiber content is used and after that varied from 0.2 to 1.8% at an interval of 0.2% by weight of cement. Various strengths considered for investigation are compressive strength, flexural strength, split tensile, bond strength and shear strength. Cube of …
Published in Journal of Construction Engineering, Technology & Management · Vol. 9, Issue 2, 2019 · pp. 37–46 Read article
-
Identification and Management of Risk in Building and Infrastructure Projects
Abstract: Building and infrastructure projects are very large and complex in nature consisting of extensive risks. For the successful accomplishment of these projects, risk identification and management should be used effectively. This paper recognizes the critical risk factors related to building and infrastructure projects in India. Seventy risks were identified through an in-depth study of literature related to risk in building and infrastructure projects. These seventy risks were categorized into eight …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 2, 2020 · pp. 1–9 Read article
-
Time-Cost-Quality Analysis for Construction of A Small House
Abstract: The clients of the industry focus mainly on time and cost of the project, they seldom focus on quality. For them if a project is completed within time and least cost overruns then the project is success and if not then its failures. A project manager should educate the client about the project site problems keeping in mind client’s demand and expectations. He should maintain the equilibrium for getting the …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 1–8 Read article
-
Monitoring and Forecasting in Construction Projects Using Time Buffer
Abstract: The key to project management is effective performance monitoring and forecasting. The existing methods using input- output cash flow, earned value, etc. do not differentiate between work done on the critical path and work done on non-critical paths. Such methods mask the real situation and mislead the project team because progress on one path often compensate for the delay in other. The paper proposes a more effective method to facilitate …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 9–16 Read article
-
Finite Element Modelling of Rollcrete Concrete Pavement
Abstract: The present study carried out to find the characteristic compressive Strength of Rollcrete (RCC) by using accelerated curing method so as to satisfy the required target mean strength in one day and comparing the same results with the normal curing strength at 28 days.Further, the study is undertaken to design of rollcrete pavements using finite element approach and evaluated the benefit of rollcrete pavement. Considering rutting as a failure criteria, …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 62–66 Read article
-
A Study on Construction Labour Productivity Parameters in India
Abstract: Construction industry (CI) is one of the major pillars in economy in any country, be it developed or a developing one. CI plays a pivotal role in the capital investment. Construction labour productivity (CLP) has pivotal role to ensure CI contributes to economic growth. It is difficult to improve or even measure CLP as there is a limited comparable input and output. Normally, even the slightest improvement in CLP level …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 1, 2016 · pp. 45–52 Read article
-
Cost Comparison of Post Tensioning, Prestressing and Conventional RCC Design
Abstract: The aim of project is to check the cost effectiveness of Post-Tensioning Slab with other design methods. For that purpose multipurpose hall is chosen with the footprint of 6 x 8 m having the total slab area is (768 sq. m). The analysis done by hand calculation and using the following methods: 1) Flat Plate (Without Drop and capital ) and Post-Tensioning Slab by using equivalent frame methods 2) Flat …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 2, 2015 · pp. 1–8 Read article
-
A Step by Step Method for Carrying Out Earned Value Analysis: Case Study of a Road Project
Abstract: A framework of Earned Value Management (EVM) is proposed with the help of case study of a road project completed by Al Tamak, Abu Dhabi (UAE). The framework gives emphasis on the process part (i.e. before the actual start of project monitoring) of Earned Value Management through MS-Project. This framework will help in measuring and managing the variances in schedule and cost of the project in terms of money. The …
Published in Journal of Construction Engineering, Technology & Management · Vol. 5, Issue 3, 2015 · pp. 18–24 Read article
-
Experimental Investigation of Mechanical Properties of Hybrid Fiber (Basalt and Steel) Reinforced Concrete
Abstract: The paper reports experimental investigations on hybrid-reinforced concrete. The proportion of basalt fiber and steel fiber was 50% respectively of the total fiber taken as sample. Effect of fiber on various strengths of concrete is studied. Fiber content varied from 0 to 4% at an interval of 1% by weight of cement. Various considerations for investigation are compressive strength, flexural strength, split tensile and bond strength. Cube of size 150 …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 2, 2013 · pp. 5–10 Read article
-
Effect of RHA on Strength of M20 Concrete Under Both Acidic and Non-Acidic Medium by Using Rebound Hammer Test
Abstract: Commonly, Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete which release large amount of carbon dioxide while manufacturing. Consequently there is important to utilize choice to limit the effect on climate. In this paper Rice husk debris were to some degree traded for concrete material. In this investigation ice husk debris are utilized as a swap for …
Published in Journal of Construction Engineering, Technology & Management · Vol. 11, Issue 3, 2021 · pp. 1–6 Read article
-
A Review: Electrical Impedance Tomography System and Its Application
Abstract: Nowadays, the objective of medical research is to improve the diagnostic tools and instruments such as to develop new assessment methods, non-invasive and long-term monitoring method. Currently, the non-invasive technique is used for during pregnancy and labor due to its standard clinical approach. Such as ultrasound and MCG, CTG is also used during pregnancy because of its sensitivity to the mother and fetal movement but it is not used during …
Published in Journal of Control & Instrumentation · Vol. 7, Issue 2, 2016 · pp. 14–22 Read article