The demand growing of energy is offset by the weakening of the generating capacity of
power due to the war conditions in Syria. As the windows are the means of optical
communication between inside and outside of the building, the source of the vent
ilation
and the natural lighting, thus having an important effect on the thermal performance of the
building, which affects the consumption of energy.
so the search relied on proposing alternatives for glass to test its thermal performance, the
choice of alternatives was based on the diversity between the values of solar radiation
permeability and the visual light in addition to enumeration of the layers, to which end the
computer simulation method was adopted and the results were compared to a model
Standard (single-transparent).
The results of the comparison showed that the amount of energy saving could be as high as
35% for the face of the sun-exposed facades directly. By reducing the permeability of the
total glass of solar radiation and increasing the permeability of the visible light to increase
the amount of natural illumination, plus the adoption of a Multi-layered glazing system ,
the study recommended that appropriate glass selection must be taken into account in the
early design phase
The codes (EGSnrc, BEAMnrc) are used to simulate 6MV photon beam produced by
Varian ix linear accelerator and different field size (2020, 1010, 44cm2). The
simulation data is stored in a phase space file that contains complete details of the dat
es of
each particle by tracking its path and interactions.
Phase space files were analyzed using BEAMDP code to:
- Obtain energy spectrum, energy flow, distribution of the mean energy and the
angular distribution of the photons and contaminant electrons on surface of water phantom
and 100cm away from linear accelerator head.
- Study effect of field size on distribution of the energy spectrum 6MV.
- Study of change in distribution of mean energy between center and edge of the field
size.
- Calculation the contribution of contaminant electrons within photonic beam at
21%.
The use of double glass has spread largely to achieve thermal isolation and reduce the
consumption of energy in refrigerating in summer or heating in winter.
The manufacture of double glass has entered in Syria, and become very important
necessity
for achieving gain in consumption of energy, and specially in the drying process
of its before joining tow glasses together and making double panes.
The researcher has prepared mathematical model for heating exchanger which is used in
drying of panes by using Matlab program, and by this pattern the researcher has studied the
effect of different factors on design of the heating exchanger for finding the optimal design
which ensure reducing in using the energy in the drying process.
A digestibility experiment was carried out using 105 unsexed chicks of a
commercial broiler breed taken from a hatchery nearby the farm of the
experiment. When the chicks started to hatch, the chicks were collected
without need to complete the operation of hatching to ensure that the
hatching chicks were hatched at the same time.
Studying the mechanics of particle systems in special relativity is one of the most
complex issues. However, this study sets us up to lay the groundwork for building a set of
important laws. The motion of particle masses as a whole was determined b
y their energy,
impulse and static mass. It was also found that the total energy of the system of mutual
action requires taking into account the energies of these mutual acts between the particles.
Contrary to the systems of the mutual acts of collisions, approximate formulas for
interplay between charged particles were determined by studying the collision of
relativistic particles-Compton's effect.
Finally, the case of the movement of the charged particles of weak interacts was
discussed, and the movement of the interconnected particles was discussed through mutual
electromagnetic acts using the concept of mutual action between the particles of the
system.
In this research, we discussed an analytical
study of the seismic behavior of an internal joint, and we improved
the plastic response of the joint after observing the effect of the
concrete encasement to the column’s steel section along the
connection area.
In this study, samples of cotton fabric were dyed using direct dye
by the traditional method as well as using microwave energy at
different energy levels. It was noted that the use of microwave
energy increase the dye exhaustion at the used energy
levels
compared to the traditional method, as well as improving the
fastness to washing and wet rubbing.
This study treat the effect of the Suction method as a way of the
boundary layer controlling in order to avoid or at least delay the
boundary layer separation and to explain the effectiveness of this
method in improving the aerodynamic performance
of the
Airfoils of the studied wind turbine blade and thus the possibility
of obtaining better electrical output of the wind turbine, that is
performance improving of wind turbines and obtains a better
design.
The problem of energy conservation is classified as the challenge of the
age. As the population increases, energy consumption increases, and
modern designs don't provide solutions to stop depletion of resources.
The main goal of environmental desi
gn is to employ natural energy sources
to achieve the micro-climate conditions required in buildings, thus saving
energy. Studies have proved the validity of many concepts that were the
basis of the traditional architecture design classified within solar
environmental architecture.
In this research we have studied the absorbance of some zinc alloys. These alloys were
manufactured in the local market, and these alloys can be used as absorber plate in the
manufacture of solar collectors. We conducted this study in the laborator
y, first (using
tow light sources, 100W and 30 W), and Second in the external medium using direct solar
radiation. Our research provides important information that could be used in improving the
efficiency of solar collectors using absorbent surfaces that has a higher absorbency.
We have also studied the relationship between the absorbance and the atomic number of
the studied alloys. This study showed that the absorbed energy by these metals increase
with their atomic laboratory number Z.
