... Manuel Berenguel, Jose Sanchez and Sebastian Dormido, 2009. Simulation of greenhouse climate ... more ... Manuel Berenguel, Jose Sanchez and Sebastian Dormido, 2009. Simulation of greenhouse climate monitoring and control with wireless sensor network and event-based control. Sensors, 9(1): 232-252.DOI: 10.3390/s90100232. [2] Carlos Serodio, J. Boaventura Cunha, Raul ...
The performance and characteristics of a cyclone gasifier for gasification of sawdust has been st... more The performance and characteristics of a cyclone gasifier for gasification of sawdust has been studied and evaluated. The system applied a technique to gasify sawdust through the concept of cyclonic motion driven by air injected at atmospheric pressure. This study covers the results obtained for gasification of ground sawdust from local furniture industries with size distribution ranging from 0.25 to 1 mm. It was found that the typical wall temperature for initiating stable gasification process was about 400°C. The heating value of producer gas was about 3.9 MJ m-3 that is sufficient for stable combustion in a dual-fuel engine generator. The highest thermal output from the cyclone gasifier was 57.35 kWT. The highest value of mass conversion efficiency and enthalpy balance were 60 and 98.7%, respectively. The highest efficiency of the cyclone gasifier obtained was 73.4% and this compares well with other researchers. The study has identified the optimum operational condition for gasifying sawdust in a cyclone gasifier and made conclusions as to how the steady gasification process can be achieved.
... System Accelerometer Proposed with Voltage Reference in Read-Out Circuit MA Miskam, O. Sidck ... more ... System Accelerometer Proposed with Voltage Reference in Read-Out Circuit MA Miskam, O. Sidck and AZ Ruhaifi Engineering Campus ... than IS.5 kHz, ACKNOWLEDGMENTS The authors would like to express sincere appreciation of the assistance of Mr, Mohd Kusairay Musa ...
The application of wireless sensor network for process monitoring of laser cutting process is a p... more The application of wireless sensor network for process monitoring of laser cutting process is a promising solution to address the problems in achieving good cutting performance. Wireless sensor network provide real time data monitoring flexibility, maintenance convenient, and easy to relocation for laser cutting process application. This paper presents the development of wireless sensor network for monitoring temperature at cutting surfaces during laser cutting process. The system consists of thermocouple sensors, microcontroller programmable system on chip platform, wireless radio frequency and software data logger. The workability and performance of the system was tested by using gas cutting.
... shaker (TIRA Shaker TV50101). To Mr. Khairul Anuar, Mr. Azwan bin Nasirudin, Mr. Hashim bin E... more ... shaker (TIRA Shaker TV50101). To Mr. Khairul Anuar, Mr. Azwan bin Nasirudin, Mr. Hashim bin Edin, Mr. Mohammad Qayum bin Omar and Mr. Anuar bin Mohamed Zain, thanks for your kind help. Financial support from the ...
The application of wireless sensor network for process monitoring of laser cutting process is a p... more The application of wireless sensor network for process monitoring of laser cutting process is a promising solution to address the problems in achieving good cutting performance. Wireless sensor network provide real time data monitoring flexibility, maintenance convenient, and easy to relocation for laser cutting process application. This paper presents the development of wireless sensor network for monitoring temperature at cutting
2011 3rd Asia Symposium on Quality Electronic Design (ASQED), 2011
Temperature uniformity on a micro-hotplate is important for gas sensor sensitivity, linearity, an... more Temperature uniformity on a micro-hotplate is important for gas sensor sensitivity, linearity, and resolution. There are several ways to create a uniform temperature distribution on a micro-hotplate. In this paper, the modification of microheater geometry is the method used. Four different heater geometries are simulated using ConvetorWare software to determine which geometry can give the most uniform temperature distribution. The
2013 IEEE Conference on Wireless Sensor (ICWISE), 2013
ABSTRACT This paper presents the development of an active RFID system for machine condition monit... more ABSTRACT This paper presents the development of an active RFID system for machine condition monitoring. The active RFID system consists of an active RFID tag and RFID reader. The active RFID tag is designed by integrating a strain sensor module, programmable system-on-chip microcontroller, and WSN RF transceiver module. The RFID reader is developed with a single WSN transceiver module. The strain values are transmitted by an active RFID tag to the RFID reader that is connected to a computer for data monitoring, display, and storage. The functionality of the strain sensor integrated with the active RFID system with WSN is tested in real environment.
Convective accelerometer does not contain seismic mass and work based on free convection heat tra... more Convective accelerometer does not contain seismic mass and work based on free convection heat transfer of electrical heater inside a hermetic chamber. Its sensitivity is dependent to the temperature distribution of working fluid inside the hermetic chamber. In this paper, the effect of working fluid properties, acceleration and heater power on temperature profile inside the convective accelerometer hermetic chamber is presented. Convective accelerometers with various working fluids (air, carbon dioxide, water, nitrogen, argon, helium, and ethylene glycol), heater powers (0.1 to 1.0 watts), and accelerations (1 to 5 g) were simulated by using ConventorWare 2010 software. Result shows, without acceleration the temperature profile of working fluid is symmetry around the vertical axis in relation to the heat source while with acceleration, the temperature profile is slightly skewed towards the acceleration direction. Argon is the best candidate for working fluid because it produces the largest temperature difference between the left and the right sides of the heater which would result in high sensitivity accelerometer. Convective accelerometer sensitivity also can be enhanced by increasing heater power, using gas-phase working fluids and locating the temperature sensors in the range between 100 to 300 μm away from the heater.
2013 IEEE Conference on Clean Energy and Technology (CEAT), 2013
ABSTRACT The wet impregnation method for catalytic micro-combustor was characterized by using pal... more ABSTRACT The wet impregnation method for catalytic micro-combustor was characterized by using palladium as a catalyst. The main purpose of this study is to increase the surface porosity of the catalyst support. A high surface porosity indicates that a high amount of catalyst was deposited within the surface areas. The performance of the catalytic micro-combustor improves with increasing catalytic surface area. The stainless steel catalyst support was treated with sulfuric acid solution containing polyvinyl (1.19 wt%) and propargyl alcohol (0.98 wt%). Combustion test was performed using LPG-air to test the performance of the catalyst. The surface support treated with polyvinyl (PVA) showed a higher surface porosity and combustion blow-out limit compared with propargyl alcohol. The combustion mode changes from surface to submerged combustion after the catalyst was deposited in the support surface.
2013 IEEE Conference on Clean Energy and Technology (CEAT), 2013
ABSTRACT This paper presents the characterization of a micro-cyclone combustor that burns liquefi... more ABSTRACT This paper presents the characterization of a micro-cyclone combustor that burns liquefied petroleum gas. The combustor is made of stainless steel and has a reaction chamber volume of 1.15 cm3. Fuel and air are mixed inside the chamber by injecting the fuel perpendicularly to the tangentially injected air. The experiment demonstrates that the flame is sustained inside the micro-combustor over a wide range of fuel flow rates and equivalent ratios. The shapes of the flame are visualized experimentally, and the results indicate that different equivalent ratios produce different flame shapes. Combustion stability measurement exhibits that combustion blowout limit decreases as fuel flow rate increases from 10 sccm to 100 sccm, Wall temperature measurement shows that an equivalent ratio of 1.0 produces the most uniform temperature distribution.
... Manuel Berenguel, Jose Sanchez and Sebastian Dormido, 2009. Simulation of greenhouse climate ... more ... Manuel Berenguel, Jose Sanchez and Sebastian Dormido, 2009. Simulation of greenhouse climate monitoring and control with wireless sensor network and event-based control. Sensors, 9(1): 232-252.DOI: 10.3390/s90100232. [2] Carlos Serodio, J. Boaventura Cunha, Raul ...
The performance and characteristics of a cyclone gasifier for gasification of sawdust has been st... more The performance and characteristics of a cyclone gasifier for gasification of sawdust has been studied and evaluated. The system applied a technique to gasify sawdust through the concept of cyclonic motion driven by air injected at atmospheric pressure. This study covers the results obtained for gasification of ground sawdust from local furniture industries with size distribution ranging from 0.25 to 1 mm. It was found that the typical wall temperature for initiating stable gasification process was about 400°C. The heating value of producer gas was about 3.9 MJ m-3 that is sufficient for stable combustion in a dual-fuel engine generator. The highest thermal output from the cyclone gasifier was 57.35 kWT. The highest value of mass conversion efficiency and enthalpy balance were 60 and 98.7%, respectively. The highest efficiency of the cyclone gasifier obtained was 73.4% and this compares well with other researchers. The study has identified the optimum operational condition for gasifying sawdust in a cyclone gasifier and made conclusions as to how the steady gasification process can be achieved.
... System Accelerometer Proposed with Voltage Reference in Read-Out Circuit MA Miskam, O. Sidck ... more ... System Accelerometer Proposed with Voltage Reference in Read-Out Circuit MA Miskam, O. Sidck and AZ Ruhaifi Engineering Campus ... than IS.5 kHz, ACKNOWLEDGMENTS The authors would like to express sincere appreciation of the assistance of Mr, Mohd Kusairay Musa ...
The application of wireless sensor network for process monitoring of laser cutting process is a p... more The application of wireless sensor network for process monitoring of laser cutting process is a promising solution to address the problems in achieving good cutting performance. Wireless sensor network provide real time data monitoring flexibility, maintenance convenient, and easy to relocation for laser cutting process application. This paper presents the development of wireless sensor network for monitoring temperature at cutting surfaces during laser cutting process. The system consists of thermocouple sensors, microcontroller programmable system on chip platform, wireless radio frequency and software data logger. The workability and performance of the system was tested by using gas cutting.
... shaker (TIRA Shaker TV50101). To Mr. Khairul Anuar, Mr. Azwan bin Nasirudin, Mr. Hashim bin E... more ... shaker (TIRA Shaker TV50101). To Mr. Khairul Anuar, Mr. Azwan bin Nasirudin, Mr. Hashim bin Edin, Mr. Mohammad Qayum bin Omar and Mr. Anuar bin Mohamed Zain, thanks for your kind help. Financial support from the ...
The application of wireless sensor network for process monitoring of laser cutting process is a p... more The application of wireless sensor network for process monitoring of laser cutting process is a promising solution to address the problems in achieving good cutting performance. Wireless sensor network provide real time data monitoring flexibility, maintenance convenient, and easy to relocation for laser cutting process application. This paper presents the development of wireless sensor network for monitoring temperature at cutting
2011 3rd Asia Symposium on Quality Electronic Design (ASQED), 2011
Temperature uniformity on a micro-hotplate is important for gas sensor sensitivity, linearity, an... more Temperature uniformity on a micro-hotplate is important for gas sensor sensitivity, linearity, and resolution. There are several ways to create a uniform temperature distribution on a micro-hotplate. In this paper, the modification of microheater geometry is the method used. Four different heater geometries are simulated using ConvetorWare software to determine which geometry can give the most uniform temperature distribution. The
2013 IEEE Conference on Wireless Sensor (ICWISE), 2013
ABSTRACT This paper presents the development of an active RFID system for machine condition monit... more ABSTRACT This paper presents the development of an active RFID system for machine condition monitoring. The active RFID system consists of an active RFID tag and RFID reader. The active RFID tag is designed by integrating a strain sensor module, programmable system-on-chip microcontroller, and WSN RF transceiver module. The RFID reader is developed with a single WSN transceiver module. The strain values are transmitted by an active RFID tag to the RFID reader that is connected to a computer for data monitoring, display, and storage. The functionality of the strain sensor integrated with the active RFID system with WSN is tested in real environment.
Convective accelerometer does not contain seismic mass and work based on free convection heat tra... more Convective accelerometer does not contain seismic mass and work based on free convection heat transfer of electrical heater inside a hermetic chamber. Its sensitivity is dependent to the temperature distribution of working fluid inside the hermetic chamber. In this paper, the effect of working fluid properties, acceleration and heater power on temperature profile inside the convective accelerometer hermetic chamber is presented. Convective accelerometers with various working fluids (air, carbon dioxide, water, nitrogen, argon, helium, and ethylene glycol), heater powers (0.1 to 1.0 watts), and accelerations (1 to 5 g) were simulated by using ConventorWare 2010 software. Result shows, without acceleration the temperature profile of working fluid is symmetry around the vertical axis in relation to the heat source while with acceleration, the temperature profile is slightly skewed towards the acceleration direction. Argon is the best candidate for working fluid because it produces the largest temperature difference between the left and the right sides of the heater which would result in high sensitivity accelerometer. Convective accelerometer sensitivity also can be enhanced by increasing heater power, using gas-phase working fluids and locating the temperature sensors in the range between 100 to 300 μm away from the heater.
2013 IEEE Conference on Clean Energy and Technology (CEAT), 2013
ABSTRACT The wet impregnation method for catalytic micro-combustor was characterized by using pal... more ABSTRACT The wet impregnation method for catalytic micro-combustor was characterized by using palladium as a catalyst. The main purpose of this study is to increase the surface porosity of the catalyst support. A high surface porosity indicates that a high amount of catalyst was deposited within the surface areas. The performance of the catalytic micro-combustor improves with increasing catalytic surface area. The stainless steel catalyst support was treated with sulfuric acid solution containing polyvinyl (1.19 wt%) and propargyl alcohol (0.98 wt%). Combustion test was performed using LPG-air to test the performance of the catalyst. The surface support treated with polyvinyl (PVA) showed a higher surface porosity and combustion blow-out limit compared with propargyl alcohol. The combustion mode changes from surface to submerged combustion after the catalyst was deposited in the support surface.
2013 IEEE Conference on Clean Energy and Technology (CEAT), 2013
ABSTRACT This paper presents the characterization of a micro-cyclone combustor that burns liquefi... more ABSTRACT This paper presents the characterization of a micro-cyclone combustor that burns liquefied petroleum gas. The combustor is made of stainless steel and has a reaction chamber volume of 1.15 cm3. Fuel and air are mixed inside the chamber by injecting the fuel perpendicularly to the tangentially injected air. The experiment demonstrates that the flame is sustained inside the micro-combustor over a wide range of fuel flow rates and equivalent ratios. The shapes of the flame are visualized experimentally, and the results indicate that different equivalent ratios produce different flame shapes. Combustion stability measurement exhibits that combustion blowout limit decreases as fuel flow rate increases from 10 sccm to 100 sccm, Wall temperature measurement shows that an equivalent ratio of 1.0 produces the most uniform temperature distribution.
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