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Rahman, M. M.
- Design and Optimization of the Housing of Spray Unit of a Linear Motor Operated Spray Gun
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Authors
Affiliations
1 Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, MY
2 Department of Electrical Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), 43400 UPM Serdang, Selangor, MY
1 Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, MY
2 Department of Electrical Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), 43400 UPM Serdang, Selangor, MY
Source
Indian Journal of Science and Technology, Vol 6, No 8 (2013), Pagination: 5167-5175Abstract
Pneumatic system is normally used to trigger the automatic spray gun for conventional spray operations. Highly skilled labors and a number of adjustable knobs are required to produce the high quality coating works using the conventional automatic spray gun which is cost intensive. Therefore, linear motor operated multiple spray operations spray gun has been developed. This spray gun consists of two spray units, an air control and supply unit and a triggering unit to carry out the multiple spray operations. This paper focuses on the design optimization and fabrication of the housing of the spray units which hold fluid nozzles, air nozzles, an assembly cap, a needle valve or a ball valve. In the air less and air assisted airless spray systems, high pressurized liquid is passed through the nozzle which is held by the housing of the spray unit. Before entering into the nozzle, the high pressurized liquid is passed through the housing. For the simplicity of the analysis, it is assumed that the housing is an open-ended pressure vessel. From the analysis, dimensions and material selection have been optimized and finally the spray units have been fabricated and tested. During the performance test it is seen that satisfactory transfer efficiency of spray operation has been achieved by using newly developed spray housing of the spray units, which proves the stability of the spray housing during high pressure operation.Keywords
Spray Gun, Spray Process, Design, Pressure Vessel, Failure Analysis, Deflection AnalysisFull Text
References
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- Design and Fabrication of a Cool Box for Passenger Car using Automotive Air-conditioning System
Abstract Views :425 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor D.E., MY
1 Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor D.E., MY
Source
Indian Journal of Science and Technology, Vol 6, No 9 (2013), Pagination: 5208-5215Abstract
A cool box for passenger car refers to a kind of box which is designed and fabricated using well insulating materials in order to ensure the coolness inside the cool box is always stable. The coolness inside of cool box depends on the refrigerant cycles of the car air conditioning system. This cool box has same function as mini fridge to keep fresh foods and beverages but it cannot ensure to freeze the water because the temperature inside of the cool box will be in the range of 12.2oC to 22.1oC which is below the room temperature. This will help to minimize the activeness of bacteria to spoil the foods and beverages at the same time it can linger the duration for food and beverages to spoil. Cool box will help car users to bring food along them when traveling long journey and during the outdoor activities. The linkage system is mainly about connecting extra supplier hose at the receiver dryer section of car air conditioning system in order to intake the refrigerant flow to the cool box and back to connect at tube after evaporator section as outlet. All affecting parameter such as temperature inside the cool box, heat transfer rate, and air ventilation has been studied to design and fabricate the cool box. Finally several tests have been conducted which show that in operating condition inside temperature and relative humidity are suitable to keep the groceries items in fresh condition.Keywords
Cool Box, Relative Humidity, Temperature, Insulation, RefrigerantFull Text
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