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Questions and Answers
What is the orientation of the blade assembly that rotates with respect to the vertical axis?
What is the orientation of the blade assembly that rotates with respect to the vertical axis?
- Closed cylinder orientation
- Open cylinder orientation
- Vertical orientation (correct)
- Horizontal orientation
What type of main shaft arrangement is used when blades are connected to an open cylinder?
What type of main shaft arrangement is used when blades are connected to an open cylinder?
- Open cylinder arrangement (correct)
- Horizontal shaft arrangement
- Closed cylinder arrangement
- Vertical shaft arrangement
Which of the following describes the functionality of a machine with a shredding chamber only?
Which of the following describes the functionality of a machine with a shredding chamber only?
- It combines shredding with additional storage capacity.
- It performs both shredding and mixing actions.
- It primarily focuses on shredding action. (correct)
- It operates through grinding rather than shredding.
In which orientation do the blades rotate along the horizontal axis?
In which orientation do the blades rotate along the horizontal axis?
Which configuration involves blades arranged within a closed cylinder main shaft?
Which configuration involves blades arranged within a closed cylinder main shaft?
What component assists in the transport of the shredding machine?
What component assists in the transport of the shredding machine?
What is the common characteristic of the vertical and horizontal blade assemblies?
What is the common characteristic of the vertical and horizontal blade assemblies?
Which of the following is NOT a part of the mobile type biomass shredder depicted?
Which of the following is NOT a part of the mobile type biomass shredder depicted?
What is the primary purpose of the chipping section in a biomass shredder?
What is the primary purpose of the chipping section in a biomass shredder?
Which statement accurately describes biomass?
Which statement accurately describes biomass?
What is the function of the hopper in a biomass shredder?
What is the function of the hopper in a biomass shredder?
Which component drives the biomass shredder?
Which component drives the biomass shredder?
How is shredding efficiency calculated?
How is shredding efficiency calculated?
What distinguishes a stationary type biomass shredder?
What distinguishes a stationary type biomass shredder?
How is a trailer type biomass shredder typically transported?
How is a trailer type biomass shredder typically transported?
What feature is common in cart type biomass shredders?
What feature is common in cart type biomass shredders?
What is the primary purpose of the shredding chamber in a biomass shredder?
What is the primary purpose of the shredding chamber in a biomass shredder?
Which material is recommended for the knives or cutting mechanisms of a biomass shredder?
Which material is recommended for the knives or cutting mechanisms of a biomass shredder?
What is the required clearance between rotating blades and counter blades in the shredding chamber?
What is the required clearance between rotating blades and counter blades in the shredding chamber?
What angle of inclination is suggested for the blades in an open cylinder type of shredder?
What angle of inclination is suggested for the blades in an open cylinder type of shredder?
Which of the following is NOT mentioned as a component of the biomass shredder?
Which of the following is NOT mentioned as a component of the biomass shredder?
What is the minimum thickness for the cover of the shredding blades to ensure operator safety?
What is the minimum thickness for the cover of the shredding blades to ensure operator safety?
Which type of steel is specified for general components of the biomass shredder?
Which type of steel is specified for general components of the biomass shredder?
What aspect of the shredding blade design helps to avoid clogging during operation?
What aspect of the shredding blade design helps to avoid clogging during operation?
What role did the Bureau of Product Standards play in relation to the PAES 244:2010?
What role did the Bureau of Product Standards play in relation to the PAES 244:2010?
Which term is used in the standard to indicate mandatory requirements?
Which term is used in the standard to indicate mandatory requirements?
What is the main focus of the project funded by the Philippine Council for Agriculture, Forestry and Natural Resources Research and Development?
What is the main focus of the project funded by the Philippine Council for Agriculture, Forestry and Natural Resources Research and Development?
Which of the following documents was NOT mentioned as a reference in preparing PAES 244:2010?
Which of the following documents was NOT mentioned as a reference in preparing PAES 244:2010?
In what year was the PAES 244:2010 approved for adoption as a Philippine National Standard?
In what year was the PAES 244:2010 approved for adoption as a Philippine National Standard?
What does the use of the word 'should' in the standard imply?
What does the use of the word 'should' in the standard imply?
Who recommended the adoption of the PAES 244:2010 standard?
Who recommended the adoption of the PAES 244:2010 standard?
Which of these terms is essential for the structural drafting of international standards as applied in PAES 244:2010?
Which of these terms is essential for the structural drafting of international standards as applied in PAES 244:2010?
What type of marking must be provided on each biomass shredder?
What type of marking must be provided on each biomass shredder?
What should the durability of the markings on the biomass shredder ensure?
What should the durability of the markings on the biomass shredder ensure?
Which piece of information is NOT required to be marked on the biomass shredder?
Which piece of information is NOT required to be marked on the biomass shredder?
What is the required color scheme for safety markings on the biomass shredder?
What is the required color scheme for safety markings on the biomass shredder?
What is the purpose of the trademark and branding information on the biomass shredder?
What is the purpose of the trademark and branding information on the biomass shredder?
Which information is required to be punched directly on the biomass shredder?
Which information is required to be punched directly on the biomass shredder?
What must be specified about the country of manufacture if the shredder is imported?
What must be specified about the country of manufacture if the shredder is imported?
In the context of marking, what is significant about the information's bond to the base surface material?
In the context of marking, what is significant about the information's bond to the base surface material?
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Study Notes
Biomass Shredder Overview
- Biomass shredder is utilized for cutting organic materials into smaller pieces for energy and agricultural use.
- Organic materials processed can include twigs, branches, and other biomass.
Key Components
- Chipping Section: Cuts twigs or small branches into uniform chips; considered an auxiliary component.
- Hopper: The loading area for biomass materials before shredding.
- Prime Mover: Typically an electric motor or internal combustion engine that powers the shredder.
- Input Capacity: Measured in kg/hour, indicating the weight of biomass processed.
- Shredding Efficiency: Calculated as the percentage of input biomass materials processed, excluding unshredded remnants.
Classification of Biomass Shredders
-
Mode of Installation:
- Stationary Type: Fixed installation, adjustable anchors to ensure leveling.
- Mobile Type:
- Trailer Type: Attached to a transport vehicle for mobility.
- Cart Type: Manually pushed or pulled for ease of movement.
-
Orientation of Blade Assembly:
- Vertical: Blade assembly rotates vertically.
- Horizontal: Blade assembly rotates horizontally.
-
Main Shaft Design:
- Open Cylinder: Blades arranged in an open cylindrical shaft.
- Closed Cylinder: Blades arranged in a closed cylindrical shaft.
-
Blade Action:
- Shredding Only: Features exclusively shredding chambers.
- Chipping and Shredding: Combines shredding and chipping capabilities in one machine.
Manufacturing Standards
- Components should utilize heavy-duty mild steel and metal sheets for durability.
- Blades must be made of high carbon steel or tool steel for effective cutting.
- Design standards include having an outlet chute, a clearance of at least 6 mm between rotating and counter blades, and safety covers made from 2.5 mm materials for operator protection.
- Angle of inclination for blades in open cylinder types ideally should be between 15° to 20° to prevent clogging.
Testing and Marking Specifications
- Biomass shredders must undergo testing according to PAES 245.
- Markings on the shredder should include manufacturer details, capacity, recommended blade speed, and safety instructions, and must be weather-resistant.
Importance of Standards
- Standards established by the Agricultural Machinery Testing and Evaluation Center (AMTEC) and approved by the Bureau of Product Standards ensure safety and efficacy in biomass shredding machinery.
- Emphasizes the importance of quality and compliance in the manufacturing process to enhance operational efficiency and safety for users.
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