Rice Drying Mechanism - EWB.SDSUewbsdsu.weebly.com/uploads/4/5/9/2/4592209/rice_drying_mechanis… · Rice Drying Mechanism ME490A Senior Design Project Professor A ... or disclosed

Rice Drying Mechanism ME490A Senior Design Project

Professor A. J. de Ruyter Fall 2007

Rodolfo Gonzalez Department of Mechanical Engineering

San Diego State University e-mail:[email protected]

Sokha Sim

Department of Mechanical Engineering San Diego State University

e-mail: [email protected]

Vladimir Sinaniz Department of Mechanical Engineering

San Diego State University e-mail: [email protected]

Advisor Morteza Monte Mehrabadi, Ph. D

Department of Mechanical Engineering San Diego State University

e-mail:[email protected]

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Table of Content Abstract…………. ……….…………….……………………… Pages 3

Project Definition ……...……………………………………… Pages 4-5

Functional Specifications ……………………………………... Pages 6-7

Assembly/Part Drawings.………………………………….….. Pages 7-13

Bill of Materials ……...…………………..………………….....Pages14-16

Basic Concepts……………………….…..…………….....……Pages 17-21

Design Analysis…………………….…………………..…..….Pages 22-27

Task List ……………………………………………….…….. Pages 28-30

Conclusion …………………..………….………………..…. .Pages 30

Reference Material ……………..………………………….…Pages 31-34

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

SENIOR PROJECT ABSTRACT

TITLE: RICE DRYING MECHANISM

DOCUMENT NO. MESP 0002 PRINTED: 12.01.07

CONFIDENTIALITY: OK TO DISTRIBUTE. PAGE 3 OF 34

REV ISSUE DATE VERSION STATUS ORIGINATOR

A 2.13.2007 Initial template release A. J. de Ruyter This semester a solar dryer with a duct system was designed. Very similar to the one on this web site: http://www.buildvision.dk/pdf/inspection_of_solar_dryers_in_ghana.pdf The difference with this design is that is has a mechanical mixer to slowly mix the rice as heated air is blown from the bottom since mechanical mixing was recommended in a few articles when there is little heat addition. Preliminary designs were made for a weight winding mechanism to turn the mixer similar to the mechanism in a grandfather clock. If for some reason this mechanism is unable to work properly a small motor will have to be used. A manual mixer would be easier to design but our advisor advised against it since he pointed out that people would be less likely to accept a mechanism that required significant additional manual labor. As for additional heat it was elected to use a small electric dryer for emergencies. The reason for this is that upon review of several fuels such as diesel, propane, wood and rice hulls most were found to be tricky to work with. It was previously concluded that building an efficient Biomass Furnace would have been the best option for having additional heat. The only problems with that idea was that samples of the actual biomass that would be used were not readily available so as to accurately design a delivery system and the expertise needed to properly design a inexpensive biomass furnace that was also eco friendly was also a determining factor. A small generator to power the fan is the planned power source and if necessary will also power a small electric heater for emergencies. Trying to use a watermill to generate additional electricity was also considered but we determined it could not be assumed that there would always be a stream readily available to generate enough electricity. The prototype design that is planed next semester is going to be ¼ Scale in that only one drying station is planned and for full scale drying four full setups would have to be combined in one room four times as wide. One issue that was not addressed was rice storage before and after drying. It is believe that the form that the rice is stored before drying would also help the overall drying time and that modified bins could aid in the removal of additional moisture as well as preventing additional moisture reenetering the rice.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

SENIOR PROJECT DEFINITION

TITLE: RICE DRYING MECHANISM

DOCUMENT NO. MESP 0002 PRINTED: 12.01.07

CONFIDENTIALITY: OK TO DISTRIBUTE. PAGE 4 OF 34

REV ISSUE DATE VERSION STATUS ORIGINATOR

A 2.13.2007 Initial template release A. J. de Ruyter

TEAM MEMBERS

NAME EMAIL ADDRESS PHONE NUMBER

Rodolfo Gonzalez [email protected] (619) 474-8635 Sokha Sim [email protected] (619) 286-2089

Vladimir Sinaniz [email protected] (619) 660-1678

1 SPONSOR EWB National Chapter [email protected]

2 FACULTY ADVISOR Morteza Monte Mehrabadi, Ph. D Phone: (619) 594-2450 Fax: (619) 594-3599 Email: [email protected]

3 PROJECT DESCRIPTION In areas where many communities grow rice, such as those in tropical Asia, most farmers dry the rice after harvesting it on "multi-purpose drying pavement". In most cases, this is the local road. With frequent rains, the farmers must move the rice quickly and often. If the rain continues, the rice is lost, not to mention the rice lost from vehicles driving over it. The percentage of the crop lost could be as high as 10%. This problem has been identified by the Philippines Ministry of Agriculture. The local agricultural

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

engineer has a prototype dryer the farmers can use to dry crops even when it rains. It is quite interesting - the primary source of energy being the rice hulls and a small diesel engine to drive the fan.

4 ESTABLISHED WORK “Rice: Chemistry and Technology” edited by Bienvendio O. Juliano Research rice drying methods and patents. Work to be utilized includes periodic meetings, library and patent research, and designing using various softwares such as SolidWorks, MATLAB, LabView.Definition_RDM_Senior Project Definition_SIM

5 SCOPE OF WORK The dryer needs improvements, which could be done by members of Engineers Without Borders. The area is safe, there are numerous contacts already established, and there is a Peace Corp volunteer in the area for the next two years that could help with the project. There is a possibility to developing drying rice mechanism without said prototype. Anticipated research of rice drying methods. Analysis of rice drying mechanism patents. Designing our own type of rice drying mechanism, or improve the prototype. Fabrication and testing will be done after design process is complete. Special documentation may be needed to provide to fit EWB-USA design criteria.

6 DELIVERABLES Project documentation such as National Brand Computation Notebook, 74 sheets numbered, 4x4 quad for notes, sketches, research, and contact date. Other documentation is a 3-ring binder used to store printed research and other miscellaneous data. Reports include meeting with senior project advisor, senior project professor, EWB-SDSU chapter, EWB advisor, and presentation to senior project classmates. Prototype will need to be developed and test data.

7 TARGET DATES 10-23-07: Most of the trade research should be completed. 10-30-07: Preliminary design phase must commence. 12-4-07: Preliminary design must be completed and ready to be presented.

8 FUNDING Partial to full funding by EWB. Possibly self funded.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

FUNCTIONAL SPECIFICATIONS

PROJECT: Rice Drying Mechanism

DOCUMENT NO. MESP 0003 PRINTED: 12.01.2007

CONFIDENTIALITY: OK TO DISTRIBUTE. PAGE 6 OF 34

REV ISSUE DATE VERSION STATUS ORIGINATOR

A 2.27.2007 Initial template release A. J. de Ruyter

1. Environment

Application Domestic Rice Dryer Standards JSAM Standards

ASAE Standards Temperature 0°F to 110 °F, non-operating 77 °F to 100 °F operating Humidity 71 to 85% RH

2. Interface

Machine Switch color-coded-green, on-off for all, except Backup Heater Back-up Heater color-coded-red, switch on-off only Fan Dial color-coded-blue, adjustable speed Speed Range Dial ranging from 0 to 3 m/s Cleaning Fan easy to clean and disassemble Mixer should be easy to clean

3. Performance

Temperature control non (fan speed controls overall temperature). The Back up heater will have independent temp control

Compensation Up to 50% increased fan speed when heater is not used Mixer failure Weights reset or motor speed increase Capacity 50-65 rice pound load Air inlet 12 mph max Flow Rate, Medium 1-3 m3/min

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

4. Other

Mixer Sand cast metal Spring loaded assembly Plus 200 lbs. load capability Belt driven mixer Attachable to a weight or motor system Handles 3x1x6 cast iron steel with 6 in handle

Bin Dumping action movement Held the bin bed in place by handles

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

ASSEMBLY/PART DRAWINGS

PROJECT: Rice Drying Mechanism

DOCUMENT NO. MESP 0003 PRINTED: 12.01.2007

CONFIDENTIALITY: OK TO DISTRIBUTE. PAGE 8 OF 34

REV ISSUE DATE VERSION STATUS ORIGINATOR

A 2.27.2007 Initial template release A. J. de Ruyter

Note: The following drawings are meant to give a general preview of the proposed design. For a more detailed representation the drawings and assemblies in the drawings folder that accompany this repot should be viewed using SolidWorks 2007.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Bill of Materials QTY/ASSEMBLY ITEM PART # DESCRIPTION -01 1 Casing Casing, Rectangular/tryangular roof

-02 2 Rice_bin Container/Mixer

-03 3 mixer Mixer, Cylinder

1 1 1 4 Rice_bin_Mixer_Pin Connet mixer to belt 1 2 5 Rice_bin_Blade_outer_seal Protect bin and makes it tide

1 1 6 Rice_bin_Blade_inner_seal Seal pin with bin mixer 7 Rice_bin_Lid Rectangalar shape with air flow exit 8 Mixer_air inlet Screem seal to maintain rice in place 9 Turning_handle ratoate to unload and reset bin 10 back_bin_ front_holder Holds bin Upright 11 back_bin_holder Holds bin Upright 12 ductWork_SIM Airflow to the mixer 13 solar collector Solar Collertor 14 solar collector lid Protect Solar Collector

15 outer holter Holds handle in place connected to wall

16 outre _holder handle Protects bin from falling over 17 dispensing bin Rice Bed Bin 18 Gas Generator 19 Fan 20 Motor 21 Flexible Air duct

Document number: BOMPA001 Item SIZE (in) MATERIAL COST VENDOR

1 36x72x52 Wood 150McMaster-Carr

2 23x30x31 Stainless Steel 100McMaster-Carr

3 16 Dia x 23.75 H Cast Alloy Steal 35McMaster-Carr

4 1.5 Dia x 4.75 H Cast Alloy Steal 10McMaster-Carr

5 4 Dia x 2.5 H Stainless Steel 20McMaster-Carr

6 8 Dia x 1.05 H Stainless Steel 20McMaster-Carr

7 19x2x25 Stainless Steel 15 McMaster-

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Carr

8 12 Dia x 1 H Stainless Steel 10McMaster-Carr

9 12 Dia x 1 H Stainless Steel 35McMaster-Carr

10 14x31x4.5 Stainless Steel 50McMaster-Carr

11 14x31x4.6 Stainless Steel 50McMaster-Carr

12 20x71x45 Sheet Metal 120McMaster-Carr

13 36x4x55 Wood 45McMaster-Carr

14 36x.1x55 Plastic / Vynal 10McMaster-Carr

15 10x4x7 Wood 20McMaster-Carr

16 6x6x6.5 Wood 10McMaster-Carr

17 19x7.18x20 Stainless Steel 30McMaster-Carr

18 Standard 400Home Depot

19 Standard 20Home Depot

20 Standard 100Home Depot

21 Standard Alumium 10Home Depot

$1,260.00

Estimated

Item WEIGHT

(lbs.) 1 100 2 20 3 1.5 4 0.5

5 1 6 1 7 0.5 8 2 9 3

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

10 7 11 5 12 20 13 20 14 5 15 1 16 1.5 17 2.5 18 19 20 21

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

DESIGN CONCEPTS

PROJECT: Rice Drying Mechanism

DOCUMENT NO. MESP 0005 RELEASED: 3.14.2007

CONFIDENTIALITY: NOT PROPRIETARY, OK TO DISTRIBUTE.

PAGE 1 OF N

Rice Drying Mechanism Design Requirements Hard Heat Output Adjustable x to y kW Fan Speed Adjustable x to y m/s Container Constant protect from outside environment

Container Constant Insulated material

Mixer Stable Stable during spin Rice Bed Ease Easy pour in and out Rice Bed Constant <50 lbs of rice contained Generator Constant Power all equipment Desirable Heat Output Adjustable Cheapest and efficient Fan Speed Adjustable Specific output speed for Rice sensitivity

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Concept 1 Rotating Rod Mixer Has blades to mix during rotation Solar Heater Fan Blows from left to right

Rice Bed Rice enters from opposite side of fan & heater

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Concept 2 Rice Dryer Bed Rice will sit below while air blows up and out Air Channel Allows for hot air to move up the channel Reflective Solar Heater Uses reflectors to increase heat production Fan Fan will be powered

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Concept 3 Solar Collector

Position to collect solar energy at optimal angle

Mixer Rolling wheels, container spins for mixing 2 x Hydraulics Hydraulics for pouring in and out Backup Heater Electric Heater with on-off switch

Generator To power fan

Fan Fan below to pus

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Evaluation of Concepts

Concept 1 Concept 2 Concept 3 Characteristics Size Portable Not Portable Portable Weight >50 lbs >50lbs >50lbs Vertical Low Highest Medium Performance Stability Medium Low Highest Height adjust None None Yes Efficiency Medium Medium Highest Cost Medium Medium Medium Manufacturability Medium Medium High Ease of use Low Low Highest

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

DESIGN ANALYSIS

PROJECT: Rice Drying Mechanism

DOCUMENT NO. MESP 0004 RELEASED: 12.01.2007

CONFIDENTIALITY: OK TO DISTRIBUTE. PAGE 6 OF 6

DESIGN ANALYSIS

PROJECT: Rice Drying Mechanism

DOCUMENT NO. MESP 0004 RELEASED: 12.01.2007

CONFIDENTIALITY: OK TO DISTRIBUTE. PAGE 1 OF 6

Rice Bin Mixer Pin: Loading

Mass (lbs) Height (in)

Length (in)

Mass (kg)

Gravity (m/s^2)

Force on pin (N/m^2)

200 1.75 4.75 90.71 9.81 890

Material: Cast Alloy Steel Force is applied on the pin.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Rice Bin Mixer Pin:Stress

Mass (lbs) Height (in)

Length (in)

Mass (kg)

Gravity (m/s^2)

Force on pin (N/m^2)

200 1.75 4.75 90.71 9.81 890

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Rice Bin Mixer Pin:Strain

Mass (lbs) Height (in)

Length (in)

Mass (kg)

Gravity (m/s^2)

Force on pin (N/m^2)

200 1.75 4.75 90.71 9.81 890

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Mixer: Loading

Mass (lbs) Diameter Length (in)

Mass (kg)

Gravity (m/s^2)

Force on pin (N/m^2)

200 1.5 1.25 90.71 9.81 890

Material: Cast Alloy Steel

Force is applied on the mixer pin.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Mixer:Stress

Mass (lbs) Height (in)

Length (in)

Mass (kg)

Gravity (m/s^2)

Force on pin (N/m^2)

200 1.75 4.75 90.71 9.81 890

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Mixer:Strain

Mass (lbs)

Height (in)

Length (in)

Mass (kg)

Gravity (m/s^2)

Force on pin (N/m^2)

200 1.75 4.75 90.71 9.81 890

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Task List

PROJECT: Rice Drying Mechanism

DOCUMENT NO. MESP 0004 RELEASED: 12.01.2007

CONFIDENTIALITY: OK TO DISTRIBUTE. PAGE 1 OF 1

Task Description 1.00 Research 1.01 Prior art Sun drying, Solar drying, Biofuel, Electric 1.02 Technology Fan, Solar collector, Generator, Mixer 1.03 Theory Hygroscopic Rice, Rice drying theories 1.04 Patents Rice Drying Machine (PN#4270280) 1.05 Publications McClaren Issue date: Jun 2, 1981 1.06 Standards JSAM Standard 1.07 Available Products Delta Rice Dryer 1.08 Project Definition Replace Sun drying with Rice Drying Mechansm 1.09 Functional Specs Air flow, heat flow, heat output, mixer 2.00 Design

2.01 Brainstorm ideas Solar powered, wind powered, gas powered

2.02 Consult experts Advisor Dr. Mehrabadi 2.03 Develop Concepts Developed 3 concepts 2.04 Evaluate Concepts Material selection, models cost, pros and cons 2.05 Design review Dr. Mehrabadi, Dr. A. J. de Ruyter, individuals 2.06 Select design Combined to one model 2.07 Create 3D model Modeled in SolidWorks 2.08 Design review Dr. Mehrabadi 2.09 Consult manufacturer Delta and Solar Power 2.10 Evaluate cost Product and material cost 2.11 Finalize design Assembled and analyzed 3.00 Analysis 3.01 Loading diagram 50 lbs on support material 3.02 Weights Weight of mixer, rice, and rod mixer

3.03 Dynamics Movement of mixer container and rod mixer

3.04 Stress & strain Stress and strain analysis on the supports

3.05 Thermal Backup heater, solar collector heat 3.06 Fatigue Rod mixer, support 3.07 Review by expert Dr. Mehrabadi 4.00 Drawings 4.01 Assembly Assembled parts in SolidWorks 4.02 Parts SolidWorks: solar collector, casing, duct

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

4.03 Schematic Used Google Sketchup for concepts 4.04 BOM SolidWorks drawings 5.00 Prototype 5.01 Obtain material ME490B Spring 2008 5.02 Write special instructions ME490B 5.03 Fab parts ME490B 5.04 Purchase parts ME490B 5.05 Assembly ME490B ME490B 6.00 Test ME490B 6.01 Define equipment needs ME490B 6.02 Define test conditions ME490B 6.03 Write test procedure ME490B 6.04 Obtain equipment ME490B 6.05 Test 1 ME490B 6.06 Test 2 ME490B 6.07 Evaluate test data ME490B 6.08 Process test results ME490B ME490B 7.00 Documentation ME490B 7.01 Procedures ME490B 7.02 Manual ME490B 7.03 Engineering Specs ME490B 7.04 Cost summary ME490B

Rice Drying Mechanism

Help WBS Tasks Start End

Cal

enda

r D

ays

Status

. Spring Semester 2007

.. 1.00 Research 9/11/07 10/9/07 29 x 1.01 Prior art 9/11/07 10/27/07 47 . completed 1.02 Technology 9/11/07 10/27/07 47 . completed 1.03 Theory 9/11/07 10/27/07 47 . completed 1.04 Patents 9/11/07 10/27/07 47 . completed 1.05 Publications 9/11/07 10/27/07 47 . completed 1.06 Standards 9/11/07 10/27/07 47 . completed 1.07 Available Products 9/11/07 10/27/07 47 . completed 1.08 Project Definition 9/19/07 10/27/07 39 . completed 1.09 Functional Specs 10/3/07 10/9/07 7 . completed .. 2.00 Design 9/19/07 11/20/07 63 x completed 2.01 Brainstorm ideas 9/19/07 10/9/07 21 . completed

Activ ate/De-activ Insert New Taskate Filter

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

2.02 Consult experts 9/19/07 10/9/07 21 . completed 2.03 Develop Concepts 9/19/07 10/27/07 39 . completed 2.04 Evaluate Concepts 10/28/07 10/30/07 3 . completed 2.05 Design review 10/30/07 10/30/07 1 . completed 2.06 Select design 10/30/07 10/30/07 1 . completed 2.07 Create 3D model 10/31/07 11/12/07 13 . completed 2.08 Design review 11/12/07 11/12/07 1 . completed 2.09 Consult manufacturer 11/13/07 11/13/07 1 . completed 2.10 Evaluate cost 11/13/07 11/20/07 8 . completed

2.11 Finalize design 11/20/07 11/20/07 1 . In

Progress

.. 3.00 Analysis 10/10/07 11/30/07 52 x completed

3.01 Loading diagram 10/10/07 10/30/07 21 . In

Progress

3.02 Weights 10/10/07 10/30/07 21 . completed

3.03 Dynamics 10/31/07 11/30/07 31 . In

Progress

3.04 Stress & strain 10/31/07 11/30/07 31 . completed

3.05 Thermal 10/31/07 11/30/07 31 . In

Progress

3.06 Fatigue 10/31/07 11/30/07 31 . completed 3.07 Review by expert 11/23/07 11/23/07 1 . completed .. 4.00 Drawings 11/12/07 11/27/07 16 x completed 4.01 Assembly 11/13/07 11/20/07 8 . completed 4.02 Parts 11/20/07 11/27/07 8 . completed

4.03 Schematic 11/13/07 11/20/07 8 . In

Progress

4.04 BOM 11/13/07 11/20/07 8 . completed .. Finals 12/3/07 12/11/07 9 x completed Oral Presentation 12/4/07 12/4/07 1 . completed Submit Project Files 12/11/07 12/11/07 1 . completed

End Project Title: Rice Drying Mechanism Project Manager: Rodolfo Gonzalez, Sokha Sim,

Vladimir Sinaniz Last Update Date: 12/4/2007 Template XL-EasyGantt V2.2 Notes: ME490A Fall 2007

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

Conclusion The final proposed design is not yet concluded. The testing of a possible weight winding system is currently in progress. As well as the testing of the amount of heat addition for the solar reflector so as to determine if its size has to be increased or if mirrors would have to be added to increase the heat addition. We are working under the assumption that additional airflow and mechanical mixing would be enough to generate adequate rice drying while still maintaining quality and still keep the cost of drying the rice low, despite the proposed heat addition being relatively low. We are also working under the assumption that there would be little or no electricity in the areas where the proposed rice dryer is to be built. For these reasons the final generator and fan specifications will be the last ones to be concluded since these will be purchased and could limit the final design parameters. We will continue to look for ways to improve the design up and till the prototype has been built and tested. The construction of this drying mechanism will produce a final design that could aid in the rice drying of underdeveloped regions as well as providing a starting point for other groups to continue the development of a more comprehensive drying mechanism and or make improvements to this mechanism so that it can be adapted for use in a larger range of situations.

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

References

"Advanced Technology Can Make Your Home More Comfortable Now." Geothermal Heat Pump Consortium. December 2007. <http://www.geoexchange.org/press/consumers.htm>. Brain, Marshall. "How Hydraulic Machines Work." Howstuffworks. November 2007. 1 April 2000. <http://science.howstuffworks.com/hydraulic.htm>. “Car Hydraulics.” ZerCustoms. November 2007. 21 August 2006. <http://www.zercustoms.com/news/Car-Hydraulics-2.php>. Cheruvanky, Rukmini. " What is Rice Bran?" ADM Alliance Nutrition, Inc. September 2007. < http://www.admani.com/AllianceEquine/TechBulletins/WhatIsRiceBran.htm>. Darling, David. "Flat-plate solar collector." October 2007. 1 October 2006. <http://www.daviddarling.info/encyclopedia/F/AE_flat_plate_solar_thermal_collector.html>. "Dry-bulb temperature." Wikipedia The Free Encyclopedia. October 2007. 9 May 2007. <http://en.wikipedia.org/wiki/Dry-bulb_temperature>. "Grain Drying."North Dakota State University College of Agriculture. October 2007. 1 November 1994. <http://www.ag.ndsu.edu/pubs/plantsci/smgrains/ae701-2.htm>. Hall, Carl William, Brooker, Donald B., and Bakker-Arkema, Fred W. Drying and Storage of Grains and Oilseeds. New York: Springer, 1992. "Hydraulic Drive System." Wikipedia The Free Encyclopedia. November 2007. 27 November 2007. <http://en.wikipedia.org/wiki/Hydraulic_drive_system>. "Hydraulic Press." Wikipedia The Free Encyclopedia. November 2007. 4 December 2007. <http://en.wikipedia.org/wiki/Hydraulic_press>. "Humidity." Wikipedia The Free Encyclopedia. October 2007. 11 December 2007. <http://en.wikipedia.org/wiki/Humidity>. Janjai, Serm, and Tung, P. "Performance of a solar dryer using hot air from roof-integrated solar collectors for drying herbs and spices." ScienceDirect. October 2007. 19 March 2005. < http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V4S-4FRKVGJ2&_user=10&_coverDate=11%2F30%2F2005&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=963222b099f80bb5d412c3088331a319>

The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.

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The information contained herein is the exclusive property of SDSU and constitute confidential proprietary information which shall not be used, duplicated, or disclosed to any third party without the prior written consent from the Dept of Mechanical Engineering, or unless otherwise indicated on the document header.