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
thumb_up100%
Chapter 1, Problem 1.12P
Air enters a heat exchanger at a rate of 5000 cubic feet per minute at a temperature of 50 F and pressure of 14.7 psia. The air is heated by hot water flowing in the same exchanger at a rate of 11,200 pounds per hour with a decrease in temperature of 10 F. At what temperature does the air leave the heat exchanger?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The exhaust gas leaving an oil engine is passed through a heat exchanger which
consist of tubes surrounding by water. The gas enters at 327 °C and leaves at 193
°C. The water enters the exchanger at 17 and leaves at 56 °C. If the mass flow rate
of water is 2.54kg/min. Determine the mass flow rate of gas, take cp of the gas is
1.04 kJ/kg.
Ammonia and air pass through the heat exchanger. While the ammonia is entering as a superheated vapor at 16 bar pressure and 60C temperature it is leaving as a saturated liquid at the same pressure but unknown temperature. The ammonia mass flow rate is 400 kg/hour.
Air is flowing backward and is heated from 17C to 42C at the constant pressure of 2 bars.
NOTE: Find air properties from https://www.peacesoftware.de/einigewerte/luft_e.html
a.Draw the sketch of the heat exchanger showing all thermodynamic parameters (P, T, etc.)
Please show all steps of solution
Water vapor at 20000 kg / hour flow enters a steam boiler with a specific volume of 225 kPa 0.7565 m3 /kg. With the energy it receives from the fuel in the combustion chamber of the boiler, it rises to 1200 kPa at 200˚C. If the boiler has poor insulation and loses 100 kW of heat to the environment, calculate the time required to increase 1 ton of water to 200 ° C in the boiler.
Chapter 1 Solutions
Heating Ventilating and Air Conditioning: Analysis and Design
Ch. 1 - Convert the following quantities from English to...Ch. 1 - Convert the following quantities from SI to...Ch. 1 - A pump develops a total head of 50 ft of water...Ch. 1 - A fan is observed to operate with a pressure...Ch. 1 - The electric utility rate for a facility during...Ch. 1 - For the business whose monthly electrical energy...Ch. 1 - Detmine the interest rate at which the project in...Ch. 1 - How much could a company afford to spend on an...Ch. 1 - Make the following volume and mass flow rate...Ch. 1 - A room with dimensions of 31020m is estimated to...
Ch. 1 - Compute the heat transferred from water as it...Ch. 1 - Air enters a heat exchanger at a rate of 5000...Ch. 1 - Water flowing at a rate of 1.5 kg/s through a heat...Ch. 1 - Air at a mean temperature of 50 F flows over a...Ch. 1 - Repeat Problem 1-10 for air at 10 C, a tube with...Ch. 1 - Air at 1 atm and 76 F is flowing at the rate of...Ch. 1 - Air flowing at the rate of 1000 cfm and with a...Ch. 1 - A chiller is providing 5 tons of cooling to an air...Ch. 1 - Air is delivered to a room at 58 F and the same...Ch. 1 - A chiller is to pro;ide 12 tons of cooling to a...Ch. 1 - Air is being rnished to a 30-ft by 40-ft by 12-ft...Ch. 1 - If cold outside air at 20 F is leaking into a...Ch. 1 - A Btu-meter is a device that measures water flow...Ch. 1 - A heat pump uses a 100,000-gallon swimming pool as...Ch. 1 - A heat pump uses a 100,000-gallon swimming pooi as...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
A loading causes the member to deform into the dashed shape. Explain how to determine the normal strains CD and...
Mechanics of Materials
What parts are included in the vehicle chassis?
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
ICA 8-31
If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa...
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
Determine the horizontal and vertical components of reaction at the supports. Neglect the thickness of the beam...
Engineering Mechanics: Statics
66. The power available from a wind turbine is calculated by the following equation:
where P 5 power [watts], ...
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
A common procedure for cooling a high-performance computer chip involves joining the chip to a heat sink within...
Fundamentals of Heat and Mass Transfer
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
- quick pleasearrow_forwardSaturated propane vapor at 2:00 x 102 psia is fed to a well-insulated heat exchanger at a rate of 3:00 x 103 SCFH (standard cubic feet per hour). The propane leaves the exchanger as a saturated liquid (i.e., a liquid at its boiling point) at the same pressure. Cooling water enters the exchanger at70°F, flowing cocurrently (in the same direction) with the propane. The temperature difference between the outlet streams (liquid propane and water) is 15°F.(a) What is the outlet temperature of the water stream? (Use the Antoine equation.) Is the outlet water temperature less than or greater than the outlet propane temperature? Briefly explain.(b) Estimate the rate (Btu/h) at which heat must be transferred from the propane to the water in the heat exchanger and the required flow rate (lbm/h) of the water. (You will need to write two separate energy balances.) Assume the heat capacity of liquid water is constant at 1.00 Btu/(lb m°F) and neglect heat losses to the outside and the effects of…arrow_forwardA steady flow of gas enters the turbine of a jet engine at 868 °C and 24 m/s, and leaves at 474 °C and 177 m/s. A heat loss of 8 kJ/kg of gas occurs during its passage through the turbine and the mass flow rate is 3 kg/s. Take Cp = 1.080 kJ/kg.K and R = 0.295 kJ/kg.K, determine the power output of the turbine in MWarrow_forward
- Steam drives a turbine with a flow rate of 10000 kg/h. The steam enters the turbine at 60 atm and 300 C at a linear velocity of 40 m/s and leaves at a point 3 m below the turbine inlet at atmospheric pressure and a velocity of 250 m/s. The turbine gives shaft work (Ws') at a rate of 350 kW, and the heat loss (Q) from the turbine is 50 kcal/h. Calculate the enthalpy change (AH) within the process.arrow_forwardWater flows through two adiabatic turbines and a heat exchanger as shown in the picture. Hot air is used to provide additional energy to the water between the two turbines. The first turbine has a power output of 8,000 kW. Determine the power output of the second turbine in kW and the process efficiency of each turbine. Determine the state of steam in turbine 1, Formulate the 1st Law for turbine 1, and solve for the flow rate of steam. Formulate the 1st Law for the heat exchanger, and solve for the temperature at exitarrow_forwardThe air considered as the ideal gas flows through the compressor and heat exchanger at a volumetric flow rate of 26.91 m3 / min as shown in the figure. At the same time, a stream of liquid water passes through the heat exchanger. The information given in the figure is for continuous flow. Considering the compressor and heat exchanger as adiabatic and ignoring kinetic and potential energy changes, a) the power requirement of the compressor (kW) and the mass flow rate of the cooling water (kg / h),b) Calculate the entropy generation (kW / K) per unit time for the compressor and heat exchanger.arrow_forward
- A nozzle is a device for increasing the velocity of a steadily flowing fluid. At the inlet to a certain nozzle the specific enthalpy of the fluid is 3045 kJ/kg and the velocity is 70 m/s. At the exit from the nozzle specific enthalpy is 2850 kJ/kg. The nozzle is horizontal and there is a negligible heat loss from it. Determine; e. 1. The velocity of the fluid at exit The rate of flow of fluid when the inlet area is 0.1 m? and the specific volume at inlet is 0.19 m/kg. ii. The exit area of the nozzle when the specific volume at the nozzle exit is 0.5 m'/kg. 11.arrow_forwardWater vapor at a flow rate of 20000 kg / hour enters a steam boiler with a specific volume of 150 kPa 0.001053 m3 /kg. With the energy it receives from the fuel in the combustion chamber of the boiler, it rises to 1200 kPa at 150˚C. If the boiler has poor insulation and loses 100 kW of heat to the environment, calculate the time required to increase 1 ton of water to 150 ° C in the boiler.arrow_forwardAir flows steadily through a diverging diffuser. The inlet area of the diffuser is 0.01 m^2, and the mass flow rate of air into the diffuser is 3.0 kg/s. the pressure and temperature of the air as it enters the diffuser are 300 kPa and 100 C. the air leaves the diffuser with a velocity that is very low compared with the inlet velocity. Determine the temperature of the air leaving the diffuser, assuming the diffuser to be well-insulated.arrow_forward
- Air whose density is 0.078 lb/ft^3 enters the duct of an air-conditioning system at a volume flow rate of 450 CFM. If the diameter of the duct is 10 in, determine the velocity of the air in fpm at the duct inlet.arrow_forwardUsing the tablearrow_forwarda saturated steam is to be condensed at temperature of 50 °C to produce a saturated water. The cooling water is drawn from a nearby river and enters the tubes of the condenser at 18 °C and leaves it at 37 °C. The tubes of the condenser are thin of a diameter 15 mm and 5 m long and their number is 773 tubes. Determine the efficiency of the condenser, cooling water flow rate (kg/s), and steam flow rate (kg/s) considering the following date: , (water side) = 5000W I m².K ;h. = (steam side) = 60000 W / m².K ;R, =R,, =0.0001 m:CIW Answer (59.37%,115.576kg/s,3.87 kg/s). %3Darrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Power Plant Explained | Working Principles; Author: RealPars;https://www.youtube.com/watch?v=HGVDu1z5YQ8;License: Standard YouTube License, CC-BY