In a heating system, cold outdoor air at 7C flowing at a rate of 4 kg/min is

Question:

In a heating system, cold outdoor air at 7°C flowing at a rate of 4 kg/min is mixed adiabatically with heated air at 70°C flowing at a rate of 3 kg/min. The exit temperature of the mixture is
(a) 34°C
(b) 39°C
(c) 45°C
(d) 63°C
(e) 77°C

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

See More Books

Question Posted: Apr 01, 2016 04:44 AM

See More Questions

Air at 35C, 105 kPa, flows in a 100 mm 150 mm rectangular duct in a heating system. The volumetric flow rate is 0.015 m3/s. What is the velocity of the air flowing in the duct and what is the mass...
In a heating system, cold outdoor air at 10C flowing at a rate of 6 kg/min is mixed adiabatically with heated air at 70C flowing at a rate of 3 kg/min. The exit temperature of the mixture is (a) 30C...
Air at 35C, 105 kPa, flows in a 100 mm 150 mm rectangular duct in a heating system. The volumetric flow rate is 0.015m3/s what is the velocity of the air flowing in the duct?
Calculate the CGT payable in relation to each of the following disposals, assuming in each case that the annual exemption is fully utilised against other gains, that there are no allowable losses and...
Refer to Exhibit 2.1 and answer the following questions. a. What is a Ponzi scheme? b. Describe the key elements of the Bernie Madoff fraud. c. Is this fraud primarily a case of asset...
An absorption column is fed at the bottom with a gas containing 5 percent benzene and 95 percent air. At the top of the column a nonvolatile absorption oil is introduced, which contains 0.2 percent...
One hundred devices are put on life test and the times to failure (in hours) of the first 10 that fail are \[\begin{array}{rrrrr} 7.0 & 14.1 & 18.9 & 31.6 & 52.8 \\ 80.0 & 164.5 & 355.4 & 451.0 &...
Presented below and on page 678 are three independent situations. 1. Longbine Corporation redeemed $130,000 face value, 12% bonds on June 30, 2017, at 102. The carrying value of the bonds at the...
Given that f(x) = xh(x) h(-1) = 2 h'(-1) = 5 Calculate f'(-1)=
Moranda and Sills, LLP, has served for over 10 years as the auditor of the financial statements of Highland Credit Union. The firm is conducting its audit planning for the current fiscal year and is...
In a shower, cold water at 10C flowing at a rate of 5 kg/min is mixed with hot water at 60C flowing at a rate of 2 kg/min. The exit temperature of the mixture is (a) 24.3C (b) 35.0C (c) 40.0C (d)...
Hot combustion gases (assumed to have the properties of air at room temperature) enter a gas turbine at 1 MPa and 1500 K at a rate of 0.1 kg/s, and exit at 0.2 MPa and 900 K. If heat is lost from the...
Ten attributes were rank-ordered in terms of increasing importance and were identified as A, B, C, . . . , and J. Determine the weight of (a) Attribute C (b) Attribute J.
Twenty-four shims (no stacking) are used to level the 720 sq in. bed of a wood-turning lathe. Using the same leveling requirements, how many shims should be required to level the 1260 sq in. bed of a...
Consider two securities, security P and Security Q, with cash flows over the next two years, and the current market prices are as follows: Security P: Year 1 Cash Flow: $120 Year 2 Cash flow: $0...
A firm has $10m ($1m shares @ $10 each). The firm is planning to invest this $10m in a year-long project that will generate $14m after one year. If the opportunity rate is 13%, find NPV of the...
Suppose that the production of smartphones can be split in its constituent activities and each activity can be offshored to the country where it is produced more efficiently. For the following...
Jacqueline initially borrowed $7,200 from RBC Bank at 4.98% compounded monthly. After 2 years she repaid $3,528, then 5 years after the $7,200 was initially borrowed she repaid $2,160. If she pays...
What is the annual maximum amount that an employee may contribute to a flexible savings arrangement before it becomes taxable income? a. $2,650 b. $2,750 c. $2,850 d. $2,950
In exchange for land, the company received a 12-month note on January 1. The face amount of the note is $1,000, and the stated rate of interest is 13%, compounded annually. The 13% rate is equal to...
What happens if the material property v = 0.5 in the plane strain case? Is this possible? Explain.
For the 1 in. thick canopy hook shown in Figure P7-31 on page 432, used to hold down an aircraft canopy, determine the maximum von Mises stress and maximum deflection. The hook is subjected to a...
For the in. thick L-shaped steel bracket shown in Figure P7-32 on page 432, show that the stress at the 90o re-entrant corner never converges. Try models with increasing numbers of elements to show...
list and describe the three key client-related factors that the advisor is required to consider when developing a "suitable" investment portfolio for their client. Please cite resources used
Year 1 2 3 Amount ($) 2000 3000 4000 An investment made today will pays you the above cash flows at the end of each year. If your required rate of return is 5% annual interest, how much will you pay...
This project requires an investment in fixed assets, at time 0, of 44,000,000. Assets will be depreciated straight line in 5 years. This project has a 4 year life. The revenues for each of the 4...

In a heating system, cold outdoor air at 7C flowing at a rate of 4 kg/min is

Question:

Step by Step Answer:

a 34C Solved by EES Software Solutions can be verifi...View the full answer

Thermodynamics An Engineering Approach

Students also viewed these Mechanical Engineering questions