Engineer’s Blog

The Engineering of Pt Carbon Catalyst Preparation

The Engineering of Pt/Carbon Catalyst Preparation
For application on Proton Exchange Fuel Cell Membrane
This paper will deal with the strong electrostatic adsorption (SEA) method
used for catalyst preparation of Platinum on carbon supports for use in proton
exchange fuel cell membranes (PEFCM). The main objective is to optimize
dispersion and loading of Pt on carbon supports. Characterization results, of the
Pt/Carbon catalyst, prepared via the SEA will suggest that the SEA is the suitable
technique. Furthermore, the key variables will be identified and optimized in order
to obtain the conditions at which to prepare the catalyst.
http://www.almohandes.org/upload/386Jaime_Robles_Final Report.rar

Roller Bearing Mounting, Maintenance, Repair

TAROL units (Tapered Roller Bearings) are double row tapered roller bearings that are supplied with factory-set clearance, greased and sealed. The TAROL units are thus supplied ready-to-fit and are pressed onto the shaft journal by means of a hydraulic unit.
http://www.almohandes.org/upload/489tpi156_de_en.rar

How to Make a Solar Cell

Do you want to learnhow to make a simple solar cell so follow instructions found in this file you will Measuring the Electrical Output after finishing from voltage current and after that you will be asked some questions to make sure the topic has been covered.
http://www.almohandes.org/upload/764Student_Solar.rar

Pneumatic Power Motors

Air pressure (psig or bars) at motor location.
2. Pipe size of air supply system to assure adequate
volume (cfm or m3/min) so as to minimize line loss
(air pressure drop during motor operation).
3. Plant air system pressure may vary during the day
due to use by other equipment; therefore, base the
selection of the air motor on the lowest psig or bars
that can be expected. Then, by using a pressure
regulator in the line at the motor, a uniform air supply
is assured
http://www.almohandes.org/upload/466SP-104_EN.rar

Regulation of Coal Polymer Degradation

Many of the procedures used in studies described herein were described in previous
quarterly reports. The methods and materials described below refer mainly to
experiments involving the use of leonardite or solubilized leonardite as a substrate for methanogenesis.(chemistry)
http://www.almohandes.org/upload/110M98059410.rar

Energy auditing and recovery for dry type cementrotary kiln systems

This paper deals with the energy audit analysis of a dry type rotary kiln system working in a cement plant in Turkey. The kiln has a capacity of 600 ton-clinker
per day. It was found that about 40% of the total input energy was being lost through hot flue gas (19.15%),cooler stack (5.61%) and kiln shell (15.11% convection plus radiation). Some possible ways to recover the heat losses are also introduced and discussed. Findings showed that approximately 15.6% of the total input energy (4 MW) could be recovered.on Cement production
http://www.almohandes.org/upload/881A5.rar

thermal decomposition of serpentine of thermal treatment

thermal decomposition of serpentine of thermal treatment

Serpentine, Mg3Si2O5(OH)4, is a suitable raw material for the production of high-purity magnesium oxide and silica. The thermal decomposition of serpentine from the region of Ljeskovac
http://www.almohandes.org/upload/695hrsak.rar

Bioremediation of oil by marine microbial mats

Given favorable environmental conditions, all natural
organic compounds degrade. If any organic compound
produced in the ecosphere were inherently resistant to
recycling, huge deposits of this material would have
accumulated throughout the geological ages. Substantial
organic deposits, such as fossil fuels,
http://www.almohandes.org/upload/85205Cohen.rar

Project Cost Control: The Way it Works

In a recent consulting assignment we realized that there was some lack of understanding of the whole system of project cost control, how it is setup and applied. So we decided to write up a description of how it works. Project cost control is not that difficult to follow in theor
http://www.almohandes.org/upload/552cost_control.rar

cost control

Cutting costs is the simplest way to improve
your bottom line. Introducing a cost control
system can bring immediate savings and
ensure that you remain competitive in the
longer term.
http://www.almohandes.org/upload/711st2cost.rar