Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Steam Power Plants

Reduction of Chemical Effects of Swelling and Shrinkage Phenomenaon of a Boiler in Steam Power Plants Using Silicon Antifoam

Raheek I. Ibrahim

Engineering and Technology Journal, 2013, Volume 31, Issue 15, Pages 2960-2981

The swelling /shrinkage are complex phenomenon in the steam power plants.
One of the important reasons is the chemical effects, which causes a bubble
formation and hence serious foaming carryover problems in the boiler. The present
work is devoted to study and measure the chemical effects of the swelling and
shrinkage phenomena due to the disturbance of the variables in the drum boiler of
steam generation unit. The problem was studied and analyzed to find a suitable
solution to reduce the foaming carryover, and hence to control the swelling and
shrinkage phenomena. The theoretical part is describing the mathematical model
for the boiler variables. The drum pressure and drum level at different load
demands of boiler were measured experimentally. The feed water was treated
carefully in order to study the reduction of foam produced from a small amount of
lubricant oil in the boiler water. The foam was treated using silicon antifoam [SN
6010]. The experimental results proved that the silicon antifoam is efficient to
remove the foam completely and then reduce the disturbance in the pressure by
18.6% and the reduction in swelling and shrinkage was by 29.4%, and 16%

Mathematical Modeling of Hybrid Cooling Tower for Steam Power Plant

Hashim A.Hussain

Engineering and Technology Journal, 2012, Volume 30, Issue 20, Pages 3616-3636

An economical and environmental requirements of hybrid cooling tower in
steam power plant are represented by decreasing of outlet water temperature,
reducing of water and energy consumption, and working without mist formation.
The present work is devoted to study and determine the best contact method of dry
and wet tower to build hybrid cooling tower.A three suggested models differs in
contacting method of air and water are studied. Analysis of these models are
dependent on the basic principles of thermodynamics ,mass and heat transfer with
considering of initial and boundary conditions. The best model must be giving
accepted values in economical and environmental requirements. A Computer
program by Matlab is used for solving the governing equations and determining the
suitable mathematical model. The results are indicated that the third model (air in
series and water in parallel) is the best in contacting method which satisfied the
economic and environment requirements .The results are recorded and represented
by graphs.