Answer:
heater wattage = 4.32 kW
Explanation:
given data
volume flow rate of air = 0.1 m³/s
temperature t1 = 15°C
temperature t2 = 50°C
relative humidity RH = 80%
pressure = 101.325 kPa
to find out
heater wattage
solution
we will get here h value from psychometric chart with the help of temperature
that is
h1 = 37 kJ/kg
and
h2 = 73 kJ/kg
and v1 = 0.829 m³/kg
so here heater wattage formula is
heater wattage = m ( h2 -h1) ......1
here m is
m = V/v1 = 0.1 / 0.819 = 0.12 kg/s
so from equation 1
heater wattage = 0.12 ( 75 -39 )
heater wattage = 4.32 kW
It is called a ‘Waste Stream’
This should be right! Hope this helps, have a great day!
Answer:In fact, engineers have completely changed the world we live in, from modern homes, bridges, space travel, cars and the latest mobile technology. Innovative ideas are at the heart of what engineers do, and they use their knowledge to create new and exciting prospects and solve any problems that may arise.
Explanation:
yea:D
Answer:
Option D
A mineral’s color reflects the wavelengths of light that are absorbed by the mineral.
Explanation:
Color is one of the physical properties of minerals. Many minerals have a wide range of colors but there are some minerals with one consistent color and such minerals are referred as monochromatic minerals for example azurite. Normally, the streak color tends to be less variable than the color of the whole mineral and impurities or minor chemical components in a mineral react and often control the display color of resultant mineral. Option D is incorrect since mineral's color don't reflect wavelengths of light absorbed by such minerals.
Answer:
point B where has the largest Q value at section a–a
Explanation:
The missing diagram that is suppose to be attached to this question can be found in the attached file below.
So from the given information ;we are to determine the point that has the largest Q value at section a–a
In order to do that; we will work hand in hand with the image attached below.
From the image attached ; we will realize that there are 8 blocks aligned on top on another in the R.H.S of the image with the total of 12 in; meaning that each block contains 1.5 in each.
We also have block partitioned into different point segments . i,e A,B,C, D
For point A ;
Let Q be the moment of the Area A;
SO ;
where ;
For point B ;
Let Q be the moment of the Area B;
SO ;
where ;
For point C ;
Let Q be the moment of the Area C;
SO ;
where ;
For point D ;
Let Q be the moment of the Area D;
SO ;
since there is no area about point D
Area = 0
Thus; from the foregoing ; point B where has the largest Q value at section a–a