![subject](/tpl/images/cats/User.png)
Engineering, 13.11.2019 01:31 tigermath85
Pressurized water is often available at elevated temperatures and may be used for space heating or industrial process applications. in such cases it is customary to use a tube bundle in which the water is passed through the tubes, while air is passed in cross flow over the tubes. consider a staggered arrangement for which the tube outside diameter is 16.4 mm and the longitudinal and transverse pitches are sl = 20.5 mm and st = 20.5 mm. there are seven rows of tubes in the airflow direction and eight tubes per row. under typical operating conditions the cylinder surface temperature is at 70 degree c, while the air upstream temperature and velocity are 15 degree c and 6 m/s, respectively. determine the air-side convection coefficient and the rate of heat transfer for the tube bundle. what is the air side pressure drop?
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 03.07.2019 14:10
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20
Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 19:10
The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object
Answers: 1
You know the right answer?
Pressurized water is often available at elevated temperatures and may be used for space heating or i...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/himiya.png)
Chemistry, 18.09.2020 15:01
![question](/tpl/images/cats/istoriya.png)
History, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/istoriya.png)
History, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/istoriya.png)
History, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mir.png)
World Languages, 18.09.2020 15:01
![question](/tpl/images/cats/istoriya.png)
History, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01
![question](/tpl/images/cats/mat.png)
Mathematics, 18.09.2020 15:01