Design of Local Exhaust Ventilation for Spray Booths: Proposed Study

Workers are exposed to contaminant at workplace. Employers in Malaysia shall comply with Factories and Machineries Act 1967 and Occupational Safety and Health 1994 to minimize the exposure that hazardous to workers health. Engineering control such as to provide Local Exhaust Ventilation (LEV) is to control contaminant to the employees. This report is a research proposal to carry out for Local Exhaust Ventilation study at Automobile Assembly Plant in Malaysia focusing in spray paint to look on current design and purpose new design and advanced material to the system. Data collections are based on survey questionnaires, chemical monitoring, LEV inspection, testing and examination. Expected results are comparison from experimental, analytical and finite-element used in automotive industries prediction of advanced material will propose to the systems

Local Exhaust Ventilation and Application: A Review

The industries that are involved in the production of dangerous chemicals requires Local Exhaust Ventilation (LEV) for separating employees to hazards. LEV purpose is to separate contaminants from the source it generated. The objective of this paper is to look at a number of studies related to the LEV and its applications. The discussions are divided to several parts such as application in construction industries, buildings, manufacturing industries, workshops and paint manufacturers. Ongoing monitoring, maintenance and effective personal protective equipment (PPE) are necessary to ensure the spray booths can be managed properly and avoid employee exposure to contaminants. Ventilation design in buildings, equipment selection and use of Computational Fluid Dynamics (CFD) is highly suggested in that application. There are no exposures to hazardous materials to the building users in the construction of hospitals and others. Use of push-pull ventilation method is an efficient. The future phase of ventilation system in airplanes and hawker centre will be the consumer's attention

Experimental investigation of static properties of magnetorheological elastomer

Magnetorheological elastomer (MRE) is a type of smart material made of natural or synthetic rubber filled with micron-sized magnetic particles. Its shear modulus and elasticity can be controlled by applying an external magnetic field. In this study, a mounting system model is used to obtain displacement transmissibility factor. In the experimental analysis, three different MRE samples are manufactured by varying the percentage of magnetic par- ticles. The experimental investigations are carried out to characterize the quasi-static properties of these MREs by attaching them with universal testing machine in com- pression and tensile mode. In both modes, different cur- rents and velocities are applied to the samples. From the experimental results, a proportional relationship has been observed among the resisting force from MREs and applied excitation current, displacement and velocity. In most cases, the force has increased with the increasing per- centage of magnetic particles in the sample. However, the highest force is obtained from the sample with 30% mag- netic particles, at 2 A current and velocity of 4 mm/min. The results observed in this research would be useful for vibration control in applications such as engine mounting system

Ionic Liquids: A Tool for Halal Food Industry

Currently, replacing volatile organic solvents with ionic liquids (ILs) in industrial applications is a matter of concern. ILs became solvents of choice due to their properties such as low melting points (<100 °C) and negligible vapor pressure. Despite being expansively investigated, ILs have not yet been intensively reviewed as eco-friendly solvents for the halal industry, which is the aim of this work. ILs have been used as surfactants, extractants for the purification of biomolecules, stabilizers for enzymes and in biosensors applications. Regardless of the lack of data on the toxicity of food products with ILs residues, low doses of ILs in in vitro tests did not lead to cell damage. Moreover, several ILs have stabilizing effects on biomolecules such as enzymes and proteins. Thus, new applications of ILs in the halal industry are possible within the concept of halalan tayyiban

Dynamic effects of piezoelectric patch actuators on vibrational response of non-deterministic structures: modelling and simulations

Many engineering systems such as aircraft and automotive are considered built-up structures, fabricated from components that are classi fi ed as deterministic subsystems (DS) and non-deterministic subsystems (Non-DS). The response of Non-DS is sensitive to minor details of material properties, geometry, connections and damping distribution; therefore create problems in vibration control. Hence, the response of Non-DS is estimated using statistical modelling technique such as sta- tistical energy analysis (SEA), in which any external input to the subsystem must be represented in terms of power input. In this research, ensemble average of power delivered by a piezoelectric (PZT) patch actuator to a simply-supported plate when subjected to structural uncertainties is studied using Lagrangian method and obtained by Monte-Carlo simulation. The effects of size and location of the PZT patch actuators on the power delivered to the plate are investigated. It is found that changing the patch location on the structure will not affect the average power sup- plied by the patch while changing the patch size will change the power magnitude proportionally but with some variations at higher frequency

Baseline Inspection and Measurement of Local Exhaust Ventilation (LEV) Systems at Spray Booth in Manufacturing Plant

Examination and testing of local exhaust ventilation systems (LEV) that was conducted could help the management to create base or annual performance measurement in industry operations.The LEV will also be verified compliance with original design data, in order to determine adequate of transport velocities are being maintained. The examination also to determine if additional exhaust hoods can be added to the existing systems and compliance with Occupational Safety and Health (OSH) regulations.This Examination is to obtain the necessary data such as airflow static pressure, speed and total pressure at appropriate points LEV system. The method used is to inspect, analyze and evaluate the performance of local exhaust ventilation systems and related components, evaluate and recommend necessary measures for the restoration or repair of the damage.LEV also need to carry out inspection and tested by a registered professional engineer after construction and installation to demonstrate that the equipment meets the design specifications.Methodology for measurement and testing were based on American Conference of Governmental Industrial Hygienist (ACGIH). Selections of testing points for fume hood and canopy hood with individual suction fan, face velocities were measured and where applicable and accessible, duct transport velocities and static pressure measurements were carried out. Results from measurement data obtained is 65 fpm face velocity and flow rate 6500 fpm is lower than the value proposed by the ACGIH and show spray booth is not able to bring out the contaminants out of the workplace. The LEV systems has been examined and tested; both spray booth number1 and number 2 was below the ACGIH Standard while measurement and inspections conducted and not comply with local legislation to protect workers safety and health

Nanoemulsions: factory for food, pharmaceutical and cosmetics

Nanotechnology, particularly nanoemulsions (NEs), have gained increasing interest from researchers throughout the years. The small-sized droplet with a high surface area makes NEs important in many industries. In this review article, the components, properties, formation, and applications are summarized. The advantages and disadvantages are also described in this article. The formation of the nanosized emulsion can be divided into two types: high and low energy methods. In high energy methods, high-pressure homogenization, microfluidization, and ultrasonic emulsification are described thoroughly. Spontaneous emulsification, phase inversion temperature (PIT), phase inversion composition (PIC), and the less known D-phase emulsification (DPE) methods are emphasized in low energy methods. The applications of NEs are described in three main areas which are food, cosmetics, and drug deliver

Development and Modelling of Unmaned Underwater Glider using the System Identification Method

This paper describes a comparison study for the modelling of the unmanned Underwater Glider (UG) using system identification techniques based on two experimental set up. The experimental data obtained from lab tank test and pool test to infer model using a MATLAB System Identification toolbox. The experimental testing of UG only considered the horizontal movement or called as auto-heading. The modeling obtained will be used to design the suitable controller for heading control. The UG will be tested on an open loop system to obtain measured input-output signals. Input and output signals from the system are recorded and analyzed to infer a model using a System Identification MATLAB toolbox. Two models obtained based on data tabulated and verify using mathematical modelling of UG. The parameter of UG come up from the real model of UG and Solidworks software. The Underwater Lab Tank model has better performance which has faster rise time and settling time than swimming pool model and mathematical model.