1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
I am Lyosha [343]
3 years ago
13

A window‐mounted air‐conditioning unit (AC) removes energy by heat transfer from a room, and rejects energy by heat transfer to

the outside air. At steady‐state, the AC cycle requires 0.434kW and has a coefficient of performance (COP) of 6.22. Determine the rate at which the energy is removed from the room air, in kW. If electricity is valued at $0.10/kw-hr, determine the cost of operating the unit for 24hrs.
Engineering
1 answer:
Arada [10]3 years ago
3 0

Solution :

Given :

The power of the air‐conditioning (AC) unit is , W = 0.434 kW

The coefficient of performance or the COP of the air‐conditioning (AC) unit is given by  = 6.22

Therefore he heat removed is given by , $Q_H = 6.22 \times 0.434$

                                                                     $Q_H = 2.7 \ kW $

Now if the electricity is valued at  0.10 dollar per kW hour, then the operating cost of the air conditioning unit in 24 hours is given by = 0.10 x 2.7 x 24

                                                                                            = 6.48

Therefore the operating cost = $ 6.48 for 24 hours.

You might be interested in
Discuss the impact of the changing urban center. Include the impacts on political, economic, and social roles and opportunities.
KengaRu [80]

Answer:

The 21st century world have been earmarked with great influx of people to the urban centre,the notion of gender equality and female education have also made most traditional roles in the family changing.Before now,wives we're known for their full independence on their husband who is considered the bread winner.

Inspite of the growth of of the urban centre the availability of resources have dwindled,resulting in the surge of unemployment in many urban centre,the political entity of the society which is the government have serious challenging in managing the various threat posed by overpopulation, unemployment results in the decrease of standard of living of person and family,to cater for this family have to change their roles,wives now work to support the husband.

Explanation:

6 0
3 years ago
Summarize key
BlackZzzverrR [31]

Answer:

what are is ethiopia cultural ?

7 0
2 years ago
The drag coefficient of a vehicle increases when its windows are rolled down or its sunroof is opened. A sports car has a fronta
klio [65]

Answer:

Explanation:

The additional power consumption of the car when v :

35 mi/h = 0.464hp

70 mi/h = 3.71hp.

For the step by step explanation of how we arrived at these answers, please go through the attached files.

3 0
3 years ago
Read 2 more answers
What is the least count of screw gauge?<br> (a) 0.01 cm<br> (b) 0.001 cm<br> (c) 0.1 cm<br> (d) 1 mm
Nonamiya [84]
Its 0.001

0.01 x100 = 1mm
0.001x100=0.1mm
0.1=10mm
1m
3 0
3 years ago
Consider 2 hosts, Host A and Host B, transmitting a large file to a Server C over a bottleneck link with a rate of R kbps.
nevsk [136]

Answer:

i want coins sorry use a calculator or sum

Explanation:

kk

5 0
3 years ago
Other questions:
  • Three return steam lines in a chemical processing plan enter a collection tank operating at a steady state at 1 bar. Steam enter
    11·1 answer
  • 3. Air at 1 atm and 20 0 C flows tangentially on both sides of a smooth flat plate of width W=10 ft and length L=10 ft in the di
    8·1 answer
  • A thick steel slab ( 7800 kg/m3, 480 J/kg·K, 50 W/m·K) is initially at 300°C and is cooled by water jets impinging on one of its
    14·2 answers
  • The density of a certain material is such that it weighs 9 pounds per cubic foot of
    10·1 answer
  • For a brass alloy, the following engineering stresses produce the corresponding plastic engineering strains prior to necking:
    9·1 answer
  • When -iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is
    5·1 answer
  • Identify SIX (6) objectives of maintenance.<br>​
    5·1 answer
  • Tech A says that coolant circulates through some intake manifolds to help warm them up. Tech B says that some intake manifolds u
    13·1 answer
  • Architecture reflects multidisciplinary
    13·1 answer
  • If a material is found to be in the tertiary phase of creep, the following procedure should be implemented:
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!