Some manifold bodies have a sight glass to observe the flow of refrigerant. Hand valves are used to control the flow of refrigerant through the passages of the manifold body. Figure (4.12) Refrigerant pressure gauge manifold Experimental Procedure The experiments were conducted in EGAT Company's research and development laboratory, which is equipped with the latest measurements devices used in conducting experiments. The experimental procedures as following: Should make sure that the refrigerant pressure in each pipe of heat pipe heat exchanger as it is in the desired value. The inclination angle of heat pipe should to be adjusting automatically by using the actuator that control in the main
Viscosity: This is an internal property of fluid that offers resistance to flow. Thermal conductivity: This is the quantity of heat transmitted through unit thickness in direction normal to a surface. Specific heat: This is amount of heat per unit mass required to raise the temperature by one kelvin 1.3 Literature Review Various researchers have carried out investigations into the effect of mixed convective flows in rectangular enclosures by using analytical, experimental, and numerical
LITERATURE REVIEW Umang Parmar et al. , experimentally investigated the ultrasonic welding of thermoplastics is one of the joining methods which is based on application of high-frequency vibratory energy in that workpieces are held together under pressure without melting. This study involves the experimental data of joint strength of acrylonitrile butadiene styrene (ABS) material for ultrasonic welding on welding parameters (welding pressure, welding time and amplitude) and critical states of the welding parameters has been analysed by analysis of variance. Mantra Prasad satpathy et al. , research work explored the joints of various dissimilar metals produced by ultrasonic spot welding and the weld strength, interface temperature ,weld area ,micro hardness were measured as well as the quality of the weld revealed for different weld times.
Mechanical and metallurgical investigations were performed. The optimum welding parameters were determined for these working conditions. The microhardness variation across the weld zone was conducted using Vicker?s microhardness test. The response surface methodology was adopted for determining the optimum combination of welding parameters. The regression equation was developed to predict the maximum tensile strength for the optimal parameters.
All the material properties are checked by reputed testing labs in pune, Mumbai and nashik. Experimental results are damping loss factors and natural frequencies. From MATALB coding modal analysis of undamped beam is done. And then another MATLAB code is generated for ross kerwin ugler model of viscoelasticity to calculate damping loss factor.  MATHEMATICAL
Nickel powder were fed through Co-axial feeder. The substrate is pre cleaned with Nitric acid to remove grease and dust particles. In order to changing the power the bonding strength between the clad layer and substrate were increased. The laser cladding process were obtained over SS202 plate of size (160 x 120 x 5 mm) with variable travel speed, Laser power and powder feed rate to find the optimal parameter for quicker and effective laser cladding. The parameters and the levels are planned in
A Study of Lethal Effects of High Power Laser over Various Materials by Transient Thermal Analysis using Finite Element Method Abstract: This paper describes the lethal effects of Laser during its interaction with metals. In this paper we discuss the thermal analysis for studying the changes in physical properties of different metals and alloys name copper (Cu), Aluminum (Al) and Stainless Steel (SS) using finite element analysis (FEA) technique. The ANSYS WORKBENCH 14 software was used along with 3D CAD (Computer-Aided Design) solid geometry to simulate the behavior of temperature distribution under thermal loading conditions. A comparative study is also done to simulate the effect of beam- combining. Introduction: A high power fiber laser
Loads on the rock will affect the core’s permeability to fluids, so it is important to duplicate them during testing. The injection pressure at the core face is measured using a pressure transducer and the gas flow rate is measured using a precision mass flow meter. An excel spreadsheet calculation template allows for calculation of gas
Also, in according to the previous paragraphs, it is important that both these phenomena are considered in the vibration behaviors of nanobeams. Consequently, the formulation should include both these phenomena to make a precise vibration analysis. Motivated by this idea, we aim to study the combine effects of the nonlocal and the surface effects on the vibration and buckling behavior of the rotating nanobeam in the magnetic field and under compressive axial load. Also, we have studied the effect of the surface energy to derive the vibration governing equation of the nanobeam. According to this theory, three factors are considered that these factors are the surface density, the surface stress and the surface elasticity.
Abstract The main objective for this experiment is to perform the heat treatment process and the precipitate hardening process at different temperatures for the aluminium specimens provided. The temperature at which and Al-Cu alloy is tempered at can affect its properties. The process which strengthens the alloy is known as precipitation hardening or age hardening. Basic metallographic techniques and mechanical testing will be performed on the specimens to further understand the properties of aluminium at different solid phase. Experiment results will be further discussed and concluded.