Heating Ventilating and Air Conditioning: Analysis and Design
6th Edition
ISBN: 9780471470151
Author: Faye C. McQuiston, Jeffrey D. Spitler, Jerald D. Parker
Publisher: Wiley, John & Sons, Incorporated
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 5, Problem 5.29P
The floor of the basement described in Problem 5-28 is finished with a thin vapor barrier,
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
1. A composite furnace wall is made up of a 12-in. lining of magnesite refractory brick, a 5-in.thickness of 85% magnesia, and a steel casing 0.10-in. thick. Flue gas temperature is 2200 F andthe boiler room is at 80 F. Gas side film coefficient is 15 Btu/hr-sq.ft-F and air side is 4.0.Determine:a. The thermal current Q/Ab. Interface temperaturesc. Effect on thermal current and inside refractory wall temperature if the magnesia insulation weredoubled.
PROBLEM: IVB-46
FROM THE BOOK: ENGINEERING THERMOFLUIDS, M. MASSOUD.
2-D: A fin may be manufactured as an integral part of a surface by using a casting or extrusion
process, or it may be separately brazed or adhered to the surface. From thermal considerations,
which option is preferred?
2-E: What is the difference between steady-state and transient heat transfer processes? Give an
example for each of them.
2-F: What is the physical interpretation of the Biot number?
2-G: For flow over a flat plate, sketch variation of local convective heat transfer coefficient, h(x),
versus the distance along the plate x for laminar, transition, and turbulent flow regimes.
Chapter 5 Solutions
Heating Ventilating and Air Conditioning: Analysis and Design
Ch. 5 - Determine the thermal conductivity of 4 in. (100...Ch. 5 - Compute the unit conductance C for 512 in. (140...Ch. 5 - Compute the unit thermal resistance and the...Ch. 5 - What is the unit thermal resistance for an inside...Ch. 5 - Compute the thermal resistance per unit length for...Ch. 5 - Assuming that the blocks are not filled, compute...Ch. 5 - The partition of Problem 5-4 has still air on one...Ch. 5 - The pipe of Problem has water flowing inside with...Ch. 5 - Compute the overall thermal resistance of a wall...Ch. 5 - Compute the overall heat-transfer coefficient for...
Ch. 5 - Estimate what fraction of the heat transfer for a...Ch. 5 - Make a table similar to Table 5-4a showing...Ch. 5 - Estimate the unit thermal resistance for a...Ch. 5 - Refer to Problem 5-13, and estimate the unit...Ch. 5 - A ceiling space is formed by a large flat roof and...Ch. 5 - A wall is 20 ft (6.1 m) wide and 8 ft (2.4 m) high...Ch. 5 - Estimate the heat-transfer rate per square foot...Ch. 5 - A wall exactly like the one described in Table...Ch. 5 - Prob. 5.19PCh. 5 - Compute the overall heat-transfer coefficient for...Ch. 5 - Compute the overall heat transfer for a single...Ch. 5 - Determine the overall heattransfer coefficient for...Ch. 5 - A basement is 2020ft(66m) and 7 ft (2.13 m) below...Ch. 5 - Estimate the overall heat-transfer coefficient for...Ch. 5 - Rework Problem 5-23 assuming that the walls are...Ch. 5 - A heated building is built on a concrete slab with...Ch. 5 - A basement wall extends 6 ft (1.8 m) below grade...Ch. 5 - A 2440ft(7.312.2m) building has a full basement...Ch. 5 - The floor of the basement described in Problem...Ch. 5 - Assume that the ground temperature tg is 40 F (10...Ch. 5 - Use the temperatures given in Problem 5-30 and...Ch. 5 - A small office building is constructed with a...Ch. 5 - A 100 ft length of buried, uninsulated steel pipe...Ch. 5 - Estimate the heat loss from 100 m of buried...Ch. 5 - A large beverage cooler resembles a small building...Ch. 5 - Consider the wall section shown in Fig. 5-10. (a)...Ch. 5 - A building has floor plan dimensions of 3060ft....Ch. 5 - Compute the temperature of the metal roof deck of...Ch. 5 - Consider the wall section shown in Fig. -4a,...Ch. 5 - Consider the knee space shown in Fig. 5-11. The...Ch. 5 - Estimate the temperature in an unheated basement...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The fan circulates the warm air on the inside of the windshield to stop condensation of water vapor and allow for maximum visibility during wintertime (see images). You have been provided with some info. and are asked to pick from the bottom table, the right model number(s) that will satisfy the requirement.Your car is equipped with a fan blower setting that allow you to choose between speeds 0, 1, 2 and 3. Variation of the convection heat transfer coefficient is dependent upon multiple factors, including the size and theblower configuration.following image shows the parametersarrow_forwardCalculate the heat transfer coefficient for forced convection local boiling of water in a vertical pipe at 8 atmospheres pressure, 12°C surface superheat.arrow_forwardHandwrite pleasearrow_forward
- i need the answer quicklyarrow_forwardHello Sir,Good Evening. I have a question in my homework related Heat Transfer lesson. The following below is my question. Please Advice. Thank You "Briefly describe the steps we need to take to calculate the rate of heat transfer (heat flux) for flow through a cylinder with a circular cross section for a Reynolds number of 10,000.Write down the equations involved."arrow_forwardEstimate the interfacial heat transfer coefficient for evaporation of a thin film of saturated liquid water at atmospheric pressure. The liquid film rests on a flat, solid surface to which a constant and uniform heat flux of 150 kW/m? is applied. The accommodation coefficient may be taken to be 0.05. If the liquid film thickness is 0.2 mm, compare the interfacial vaporization resistance with the conduction resistance through the liquid film.arrow_forward
- a 2cm diameter copper meltallic element at an initial uniform temperature of 60 C is submerged in 20c water. The temp of the sphere after 20 seconds is 31c. Determine the average heat transfer coefficient. write assumptions.arrow_forwardThe condenser of a steam power plant consists of AISI 302 Stainless steel tubes, each with outer and inner diameters of 35 mm and 30 mm, respectively. Saturated steam at 0.135 bar condenses on the outer surface of the tube, while water at a mean temperature of 295 K is in fully developed flow through the tube (you can assume that 295 K is the mean temperature in the axial direction of the tube (e.g. along its length) or you may assume that the inlet water temperature is 295 K). For a water mass flow rate of 0.22 kg/s, what is the outer surface temperature of the tube and the rates of heat transfer and steam condensation per unit tube length? As an approximation you may evaluate the properties of the liquid film at the saturation temperature.arrow_forwardI need the answer as soon as possiblearrow_forward
- molten salt at 920 K. Data for molten salt: 10 K¹: (920 K) 1.65 x 10³ N s m². 8.20 A steel rod (25 mm diameter and 0.6 m length) is heated vertically in a large bath of Calculate the heat transfer coefficient when the bar is at 640 K. = 870 J kg K¹; p = 3200 kg m³; ß = 2 x k = 86 W m¹ K¹; C, : 1.03 x 10³ N s m²; n(780 K) = 1.24 x 10³ N s m²; n(640 K) =arrow_forwardYou are asked to design a metal hot dog holder for roasting hot dogs over an opencampfire. The holder is to be designed such that while the end holding the hot dogbecomes cherry red (1400oF), the other end can still be held without using aninsulated handle or glove (~95oF). Design it such that it can be used even on awarm, still day, Tf = 90oF (Assume the convective heat transfer coefficient, h, fora horizontal cylinder is uniform over the whole cylinder and equal to 4.0Btu/hrft2oF)arrow_forwardQuestion c d and e pleasearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage Learning
Principles of Heat Transfer (Activate Learning wi...
Mechanical Engineering
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Cengage Learning
Heat Transfer – Conduction, Convection and Radiation; Author: NG Science;https://www.youtube.com/watch?v=Me60Ti0E_rY;License: Standard youtube license