Air (C, = 1005J/kg · °C) is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters%3Dthe furnace. Air enters the heat exchanger at 95 kPa and 20°C at a rate of 0.8 m³ /s. The combustion gases(C, = 1100 J/kg · °C) enter at 180°C at a rate of 1.1 kg/s and leave at 95°C. The product of the overall heat%3Dtransfer coefficient and the heat transfer surface area is AU = 1200 W/°C. Assuming both fluids to be unmixed,determine the rate of heat transfer and the outlet temperature of the airAir95 kPa20°C0.8 m/sExhaust gases1.1 kg/s95°C

Given: Given:Cp,air=1005 J/Kg.KTci=20°Cmc=0.8 m3/sCp,gas=1100 J/Kg.KThi=180°CThe=95°Cmh=1.1…

Air (C, = 1005J/kg · °C) is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. Air enters the heat exchanger at 95 kPa and 20°C at a rate of 0.8 m3 /s. The combustion gases (C, = 1100J/kg · °C) enter at 180°C at a rate %3D 1.1 kg/s and leave at 95°C. The product of the overall heat transfer coefficient and the heat transfer surface area is AU = 1200 W/°C. Assuming both fluids to be unmixed, determine the rate of heat transfer and the outlet temperature of the air Air 95 kPa 20°C 0.8 m/s Exhaust gases

Air (C, = 1005J/kg · °C) is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. Air enters the heat exchanger at 95 kPa and 20°C at a rate of 0.8 m3 /s. The combustion gases (C, = 1100J/kg · °C) enter at 180°C at a rate %3D 1.1 kg/s and leave at 95°C. The product of the overall heat transfer coefficient and the heat transfer surface area is AU = 1200 W/°C. Assuming both fluids to be unmixed, determine the rate of heat transfer and the outlet temperature of the air Air 95 kPa 20°C 0.8 m/s Exhaust gases

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

Related questions

Q: R134-a enters the condenser of a residential heat pump at 800 kPa and 40°C at a rate of 0.018 kg/s,…

A: Given Pressure, P = 800 kPa Mass flow rate, m = 0.018 kg/s Power, W = 1.2 kW Find COP…

Q: Consider a regenerative gas-turbine power plant with two stages of compression and two stages of…

Q: Piosqu wab lico, 182 los na not 18- A stream of outdoor air at 35°C dbt and 28°C wbt is mixed with…

Q: Hot combustion gases enter the nozzle of a turbojet engine at 250 kPa, 650°C, and 70 m/s and exit at…

A: Given data as P1=250 kPaT1=650 °C=923 Kv1=70 m/sP2=80 kPaT2=420 °C=693 Km˙=1.2 kg/sQloss=90 kW=90000…

Q: A rotary dryer fired with bunker oil having HHV = 10, 000 kcal/kg is to produce 20 MT/hr of dried…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: Given, P1 = 80 kPa = 80000 PaT1 = 27 °C = 300 KV1 = 220 m/sm˙ = 2.5 kg/sT2 = 42 °C = 315 KA2 = 430…

Q: Problem 4 . Steam at a flow rate of 5.21 kg/s enters a turbine at 9000 kPa and 650 °C and leaves at…

Q: Air at 2.5 bar, 400 K is extracted from a main jet engine compressor for cabin cooling. The…

Q: At the commencement of the compression stroke, the cylinder of an oil engine is charged with air at…

Q: A compressor in a plant receives air at 100 kPa, 280 K, with low velocity. At compressor discharge,…

A: Let T1 = Temperature at inlet of compressor =280K T2 =Temperature at outlet of compressor =500K T3…

Q: H2O flows through a constant pressure steady heat exchanger in an internally reversible process. The…

A: The answer is attached below; please check. Explanation:Step 1:Step 2:Please rate my work; it's a…

Q: Q2 5-26. An adiabatic diffuser in a jet engine is designed to decrease the kinetic energy of the air…

Q: A gas turbine draws in air at 98kPa and 27°C. It is adiabatically compressed to 600kPa in a…

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: of 32.1 kW32.1 kW occurs during the process. You may assume that changes in kinetic and potential…

A: The inlet temperature of the air is The inlet pressure is The exit pressure is The heat loss is The…

Q: In a closed feedwater (FW) heater, a mixture enters the heater with a mass flow rate m1 and enthalpy…

A: Mixture enters heater with a mass flow rate = m1 Enthaply of enter of mass 1 = h1 Enthaply out of…

Q: Required information Problem 05.038 - Diffuser flow DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS…

A: Given data: Mass flow rate (m.)=2.5 kg/s h1 = 300.19 kJ/kg h2 = 315.27 kJ/kg A = 430 cm2 Q = 18 kJ/s…

Q: Combustion gases enter a gas turbine at 900°C, 800 kPa, and 100 m/s and leave at 650°C, 400 kPa, and…

A: Given, Temperature of gas at turbine inlet, T1=900 °C=1173 K Pressure of gas at turbine inlet,…

Q: A Stirling cycle operates with air with a volume flow rate of 0.5 m³/s at the beginning of…

Concept explainers

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

Air (C, = 1005J/kg · °C) is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters
%3D
the furnace. Air enters the heat exchanger at 95 kPa and 20°C at a rate of 0.8 m³ /s. The combustion gases
(C, = 1100 J/kg · °C) enter at 180°C at a rate of 1.1 kg/s and leave at 95°C. The product of the overall heat
%3D
transfer coefficient and the heat transfer surface area is AU = 1200 W/°C. Assuming both fluids to be unmixed,
determine the rate of heat transfer and the outlet temperature of the air
Air
95 kPa
20°C
0.8 m/s
Exhaust gases
1.1 kg/s
95°C

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

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

1. The heat produced in a boiler is transferred from the combustion products to the water. While the temperature of the combustion products decreases from 1100 °C to 550 °C, the pressure remains constant at 0.1 MPa. The average specific heat at constant pressure of the combustion products is 1.09 kJ/kg.K. The water enters the system at 0.8 MPa and 150 °C, and leaves at 0.8 MPa and 250 °C. Determine the second law efficiency and the irreversibility for each kilogram of water vaporized for this process. Note: This is a thermodynamics course question. Please provide a solution that is clear and quick.
Thermodynamic
Required information Problem 07.021 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. During the isothermal heat addition process of a Carnot cycle, 700 kJ of heat is added to the working fluid from a source at 400°C. Problem 07.021.c - Total entropy change for the process Determine the total entropy change for the process. The total entropy change for the process is KJ/K.
A well-insulated heat exchanger is to heat water (cp = 4.18 kJ/kg-°C) from 25°C to 60°C at a rate of 0.5kg/s. %3D The heating is to be accomplished by geothermal water (cp = 4.31 kJ/kg-°C) available at 140°C at a mass flow rate of %3D 0.5 kg/s. What is the temperature of exit Brine. Water 25°C Brine 140°C 60°C
49