### Educational Website Transcription**Title:** Double-Pipe Heat Exchanger for Refrigerant Condensation**Introduction:**A double-pipe heat exchanger is a device used to transfer heat between two fluids. This particular setup features a long, thin-walled exchanger with inner and outer shell diameters of 0.01 m and 0.025 m, respectively.**System Description:**- **Objective:** To condense refrigerant-134a using water at a temperature of 20°C.- **Refrigerant Flow:** Moves through the tube with a convection heat transfer coefficient of \( h_i = 4100 \, \text{W/m}^2 \cdot \text{°C} \).- **Water Flow:** Water traverses the shell at a rate of 0.3 kg/s.- **Tube Material:** Assumed to be highly conductive with negligible thickness, leading to minimal thermal resistance.Both the refrigerant and water flows are fully developed, and their properties are assumed constant during the process.**Water Properties:**- **Density (\( \rho \)):** 998 kg/m³- **Kinematic Viscosity (\( \nu \)):** \( \mu/\rho = 1.004 \times 10^{-6} \, \text{m}^2/\text{s} \)- **Thermal Conductivity (\( k \)):** 0.598 W/m·°C- **Prandtl Number (\( \text{Pr} \)):** 7.01**Diagram Explanation:**- The diagram displays a transverse cross-section of the double-pipe heat exchanger.- The larger circle represents the outer diameter (\( D_o \)) of the shell containing cold water.- The smaller inner circle indicates the inner diameter (\( D_i \)) of the tube carrying the refrigerant.- The arrows illustrate the flow direction of the cold water around the tube within the shell.This simplified depiction assists in visualizing the heat exchange process wherein cold water absorbs heat from the refrigerant, causing it to condense. **Heat Exchanger Analysis****Problem Statement:**a) *Determine the overall heat transfer coefficient (W/m²·°C) of this heat exchanger (assume no fouling).*b) *Determine the overall heat transfer coefficient (W/m²·°C) of this heat exchanger, assume there is fouling. A 2-mm-thick layer of limestone (\( k = 1.3 \) W/m·°C) forms on the outer surface of the inner tube. The limestone layer can be treated as a plain wall layer since its thickness is very small relative to its diameter.***Diagram Explanation:**The diagram in the image depicts a cross-section of a heat exchanger with the following components:- An inner tube represented by a circle with an internal diameter \( D_i \).- An outer layer showing a thin layer of limestone labeled "Part b: Limestone layer."- The surrounding area outside the inner tube is labeled "Cold water."- Hot R-134a fluid is inside the inner tube.The diagram highlights the dual function of the heat exchanger: transferring heat between the hot R-134a and the cold water while considering fouling effects represented by the limestone layer.**Instructions:**Click "Save and Submit" to save and submit. Click "Save All Answers" to save all answers.This instructional task focuses on understanding and analyzing the heat transfer processes within a heat exchanger, both with and without the presence of fouling on the surface of the inner tube.

Given: The diameter of the tube→Di=0.01 m The diameter of the outer shell→Do=0.025 m The convective…

Cold water D₁ Do Hot R-134a Part b:Limestone layer a) Determine the overall heat transfer coefficient (W/m². °C) of this heat exchanger (assume no fouling). b) Determine the overall heat transfer coefficient (W/m². °C) of this heat exchanger, assume there is fouling. A 2-mm-thick layer of limestone (k = 1.3 W/m °C) forms on the outer surface of the inner tube. The limestone layer can be treated as a plain wall layer since its thickness is very small relative to its diameter.

Cold water D₁ Do Hot R-134a Part b:Limestone layer a) Determine the overall heat transfer coefficient (W/m². °C) of this heat exchanger (assume no fouling). b) Determine the overall heat transfer coefficient (W/m². °C) of this heat exchanger, assume there is fouling. A 2-mm-thick layer of limestone (k = 1.3 W/m °C) forms on the outer surface of the inner tube. The limestone layer can be treated as a plain wall layer since its thickness is very small relative to its diameter.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

This is Heat Exchange Please explain nice
a) Why the use of shell and tube heat exchanger is more compared to other heat exchangers? b) What will affect the heat transfer rate in heat exchangers? c) What are baffles? Why we use baffles in heat exchangers?
Please don't use chatgpt
heat trasnfer
Anser question for (a) only for Heat Transfer
In industrial processes, heat exchangers are widely used to transfer heat from one process to another. There are a wide range of heat exchanger problems that may cause poor performance. Below is a picture of one type of heat exchanger. Study it and answer the following questions: Fluid 2 in Fluid 1 out Fluid 1 in Fluid 2 out i) Determine the type of flow in this heat exchanger. How the efficiency of the heat exchanger changes if the Does operator reverses the flow arrangement of fluid? If a process engineer wants to improve the efficiency of this heat exchanger, what ii) do you recommend to increase the efficiency? B III
For the given temperature profile diagram for a heat exchanger, which of the following equation is coIrect, ping x Boding fhed Inlet Outiet a. mhyg = m.Cpc(Tco – Tei) b. m.Cpn(Tn - Tho) = m.Cpc(Ta – Teco) m,C,(Th: - Tho) = m.Cpc(Tco – Te) m,Cpn (Thi - Tho) = m.hr,
Please explain with steps.
‘Which mode of heat exchanger operation is better and why? 1 Write an expression for overall heat transfer co-efficient (U) for a double pipe heat exchanger. 1 Consider two heat exchanger, one has a parallel flow arrangement and another has a counter flow arrangement. For the same inlet and outlet temperatures for two heat exchangers, which one will have the higher valuc of LMTD? 1
Write about of the following related to shell and tube heat exchanger: (i) Tube sheet and tube pitch (ii) Baffle and baffle spacing (iii) Shell partition and pressure drop
Question about heat exchanger
HEAT TRANSFER 4 decimal places. Thank you