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
Videos
Textbook Question
Chapter 5, Problem 5.37P
A building has floor plan dimensions of
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
8.8. A solar collector and storage tank, shown in Fig. 8-15a, is to be optimized
to achieve minimum first cost. During the da
Hide image transcript
8.8. A solar collector and storage tank, shown in Fig. 8-15a, is to be optimized to achieve minimum first cost. During the day the temperature of water in the storage vessel is elevated from 25°C (the minimum useful temperature) to tmax, as shown in Fig. 8-15b. The collector receives 260 W/m² of solar ener- gy, but there is heat loss from the collector to ambient air by convection. The convection coefficient is 2 W/(m² · K), and the average temperature differ- ence during the 10-hour day is (25 + tmax)/2 minus the ambient temperature of 10°C. The energy above the minimum useful temperature of 25°C that is to be stored in the vessel during the day is 200,000 kJ. The density of water is 1000 kg/m³, and its specific heat is 4.19 kJ/(kg · K). The cost of the solar collector in dollars is 20A, where A is the area in square meters, and the cost…
A conditioned space has a calculated heat loss at the design maximum heating day of 10,000 BTUs / Hr to maintain an interior temperature of 70 F. We will use a hydronic baseboard style convector to heat the space. The style we have chosen comes in standard lengths. At rated temperature and flow of hydronic heating fluid for each 1 foot of length the heater will add 750 BTUs /Hr to the room. What length of heater can just maintain the temperature on the worst day? For this example we are ignoring other sources of heat loss such as ventilation or drafts.
Kindly solve fast
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
- * It required to design a ducting system to condition the building shown in figure (1). The uantity of outdoor is (20%) of supply air. Using information in table, find 1- The sensible and latent load for cooling coil. 2- The quantity and condition of supply air to each place. 3- By using equal pressure drop method, design the rectangular ducting system with maximum height side (600mm). 4- Illustrate the all process on psychometric chart. Outdoor 45 °C db & 30% RH Out let type Celling conditioning indoor conditioning 24 °C db & 50% RH diffuser Number of diffuser 2 for each place 15 kpa 10 kpa 15 kpa By pass factor Apparatus dew point 9°C Ap losses diffuser Ap losses filter Ap losses coil 0.15 R/w 1.5 бm бm бm Room (1) Room (2) RSH=6KW Room (3) 4m RSH=8KW RSH=8KW RLH=2KW RLH=1KW RLH=2KW 2m AHU Mechanical Room (4) RSH=20KW 4m Room RLH=3KW 4m 14marrow_forwardDesign a cooling tower for range of 8 degree celcius You can also assume missing valuesarrow_forward1. If the thermal conductivity increase the heat transfer coefficient will 2.The rate of evaporation at a given operation in an evaporator is more when a.there is a vacuum b.the operating pressure is high c.when the feed flowrate is high d.the operating pressure is low 3.In fluid, if the currents are set in motion by the action of mechanical device, the flow is independent of density gradient, the phenomenon is called a.heatexchanger behavior b.natural convection C.forced convection d.thermal conductionarrow_forward
- QUESTION 3 A manufacturer conducted an experiment for an evaporator capacity 500 kW cooling and designed for high COP of 2 when using lithium bromide plus water in an absorption refrigeration system. The evaporator operates 20 C, condenser 40 C & absorber 45 C supplying 1.4 kg/s of water plus lithium bromide solution to the generator. For a condenser size of 650 kW, determine: Show in your solution paper: Chart reading for Concentration and Enthalphy of solution being pumped Provide in the Answer Box: Enthalpy of solution being pumped in kJ/kgarrow_forwardsolve, show all steps and solutions. list assumptions and concluding comment heat transfer. show resistor diagram for Rs as well use k aluminum = 177 and k carbon steel = 60.5arrow_forwardA highly engineered Ecto-Containment System Protection Grid produces about 8 kW of waste heat in thesystem. A less highly-engineered tubular cross-flow heatsink is designed to dissipate that heat. In this case, the heat sink is a single long pipe carrying anti-freeze through the unit. The pipe has an OD of 80mm and and ID of 16mm. Assume that there is no resistance between the anti-freeze and the OD of the pipe (infinite conduction). Convection is forced, with an airflow of 12 m/s air across it Pr,air = 0.72, density(p) = 1.2 kg/m3, u = 16.83x10−6 Pa − S, k = 0.025 W/mk). The outside air is at 25℃ while the antifreeze is at 180℃. a) Find the Reynold’s Number of flow over the Pipe b) Find the convection coefficient across the pipe c) How long must the pipe be to dissipate all 8kW?arrow_forward
- Please help. I am not sure how to approach this problem. This problem involves heat transfer and internal flow within a retangular channel. Thank you.arrow_forwardRefrigerationarrow_forwardPlease answer the two questions under item no.20. Answers are given i want the solutions Thank you. Love uarrow_forward
- QL.Compute the total heat gain load from all the sources into the lunchroom ,if the lunchroom is located at the top floor of an air conditioned commercial building. The lunchroom has one exposed wall facing SE. -Wall facing SE, (20 * 15); 12 brick, the overall heat transmission value(U) is 0.3 Btu/hr.ft². F. -Roof; 6 concrete with 2" insulation, Uroof 0.4 Btu/hr.ft².F - Windows facing SE ;No.(3), (3 *3),single regular plate,double-hung metal windows,weather-stripped; unlocked ,shaded with white inside roller shade,half drawn. -Occupants: (10) persons; sedentary work. -Lightening :2 Watt /ft² of the floor area (40' *20) -Outside conditions: T= 100 F (db) & T70(wb), DR =25 F, Vwind -10 mph. -Inside conditions: T-70 F (db) & Q=40%. -Location: 40 N.L, Time = 11 A.M.arrow_forward6. A Thomas meter is located in an air duct of 2 sq ft cross-sectional area. The air weighs 0.083 lb per cu ft, and its specific heat is 0.24. Assume a controlled temperature differential of 5° and heater potential of 110 volts. Plot the velocity as abscissa and amperage as ordinate for veloc- ity 0 to 300 ft per min. Assume constant amperage of 3, and plot tem- perature difference against velocity. Discuss the curves from the stand- point of accuracy of the system. J: よ itet legeted oulindriool oir tubearrow_forward92. An office space of 35'x 25'x15' high. The space contains three (ó'x 2-5') poorly fitt ed doors made af nominal z? wood, and three double- huny mebal un Locked, windows, weather- stripped, (4x 4), the bottom of the lower sash is ea ch 3.5' from the floor. A temperature of 80 F at breath line when it is 10 f outside. is maintained in the space Compute the total heat,loss if, Vwin=15 mph, Uwall0.35 Btu/hr ft?. f Uroof = 0:3 B tu/ hre ft'. f , u,=1.13arrow_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