distance between the horizontal supporting plane surface and the horizontal plane touching

the uppermost part of the biomass shredder

All parts of the biomass shredder projecting upwards are contained between these two planes. What are those two planes?

overall length is the distance between the vertical planes parallel to the median plane of the biomass

shredder and touching its front and rear extremities.

All parts of the biomass shredder, in particular, components projecting at the rear is

contained between these two planes. Where an adjustment of components is possible, its should be set at

minimum length.

distance between the vertical planes parallel to the median plane of the machine, each plane

touching the outermost point of the biomass shredder on its respective side

All parts of the biomass shredder projecting downwards are contained between vertical planes parallel to the median plane of the machine.

running-in period is a

preliminary operation of the machine to make various adjustments after to the conduct of the

test until the operation is stable

ratio of the weight of the input biomass materials less unshredded biomass materials, to the

total weight of the input biomass materials to the shredder, expressed in percent

input capacity is the weight of unshredded biomass material fed into the shredder, expressed in gram per hour.

unshredded is a biomass material that is not totally cut into strips

Biomass shredder submitted for test should be sampled in accordance to PAES 103.

The operator shall submit specifications and other relevant information about the biomass shredder and shall abide with the terms and conditions set forth by an official testing agency.

An officially designated operator shall be skilled and shall demonstrate, operate, adjust, and repair as the case may be, related to the operation of the biomass shredder.

The biomass shredder shall be tested as installed for normal operation.

The site should have ample provisions for material handling permanent storage, workspace and suitable for normal working condition.

the test materials should be young coconut (“buko”).

The size will depend on the capability of the shredder to be tested. However, the test applicant cannot request for the use of other biomass material if he wants to know the performance of his machine.

The amount of test material to be supplied shall be at least 75% of input capacity of biomass shredder.

The instrument to be used should be calibrated and checked by the testing agency prior to the measurements.

The suggested list of test instruments and materials needed to carry out the biomass shredder test is shown in Annex D.

If prior testing, the biomass shredder has a major component breakdown or malfunctions, the test engineer from the official testing agency shall terminate the test.

Verification of the technical data and information of the manufacturer is carried out to verify the mechanism, dimensions, materials and accessories of the biomass shredder in comparison with the list of technical data and information of the manufacturer.

A plane level surface should be used as reference plane for verification of dimensional specifications of biomass shredder.

The items to be inspected and verified shall be recorded in Annex B.

This is carried out to obtain and validate data on the overall biomass shredder performance.

Data on biomass materials such as type, size and source shall be recorded.

Test materials prepared for the acceptance test and for each test trial have the same characteristics and conditions.

Before the start of the test, the shredder should have undergone running-in period wherein various adjustments of the shredder cannot be made according to the recommendation of the manufacturer.

No other adjustment shall be permitted when the test is done.

The shredder machine shall be operated at the speed(s) and feed rate(s) recommended by the test agency.

Recommended feeding rate shall be maintained during the test run.

After the test run, the area and the shredder should be cleaned and then prepared for the next trial.

There shall be a minimum of test trials?

The duration of each test trial shall commence at the start of the shredding operation and ends after feeding of the last biomass materials and it shall be recorded as input time.

The noise emitted by the machine shall be measured using a music level meter at the location of the operators.

The noise level shall be measured 50 mm away from the ear level of the feeder and bagger.

The speed of the rotating components (e.g. shaft of blade assembly, prime mover shaft) shall be taken using tachometer.

A power meter shall be used to measure electric energy consumption.

In case an internal combustion engine is used, the fuel tank should be filled to its capacity.

After each test trial the tank shall be refilled using graduated cylinder. The amount of refueling is the fuel consumption for the test.

Record sheet for all data and information during the test is given in Annex A.

After the test trials, take at least ten representative samples of biomass material for determination of material conditions (i.e. size, moisture content)

During each test trial, samples shall be taken from the output chute to be analyzed in the laboratory for the percentage of unshredded biomass material which will be used in the computation of input capacity.

In the collection of sample in this outlet, use a rectangular box-shaped tie wire catch with a dimension of 1.5 m x 0.5 m open at one end of the small side.

Three samples shall be collected randomly from this outlet with five-second duration per collection.

Samples to be taken to the laboratory should be placed in appropriate containers and properly labeled.

The laboratory test data sheet to be used is given in Annex E.

Moisture content determination shall be taken using oven-dry method.

Dry the sample in the oven with temperature of 105°C ± 2°C for 72 hours.

After removing samples from the oven, sample container with samples should be placed in a desiccator and allowed to cool to the ambient temperature.

Calculate the moisture content using Formula in Annex D.

In each test trial, unshredded and partially shredded biomass materials from the samples taken from the output chute shall be mixed and weighed.

Percent unshredded and shredding efficiency shall be calculated using equation in Annex E.

Other physical observations on the shredded materials shall be recorded in Annex D.