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
Afina-wow [57]
3 years ago
13

Estimate the heating energy requirements for a residential building using the degree-day method (a) in Denver, Colorado, and (b)

in Little Rock, Arkansas. The overall heat loss coefficient is 400 Btu/h.oF and the furnace efficiency is 0.78.
Engineering
1 answer:
Lostsunrise [7]3 years ago
5 0

Answer:

a) 600°F  days

b) 103°F  days

Explanation:

Given data :

overall heat loss coefficient = 400 Btu/h.oF

Furnace efficiency = 0.78

applying the degree- day method the heating energy requirement per day can be obtained by subtracting the average temperature for a particular day from the acceptable mid/balance point temperature

lets assume the mid/balance point temperature = 65°F

a) heating energy requirement in Denver Colorado

 we will have 600°F days  ; considering the  the average temperature - balance point temperature

= 665 - 65 = 600°F

b) heating energy requirement in Little Rock Arkansas

 we will have 103°  days

You might be interested in
A jet aircraft is in level flight at an altitude of 30,000 ft with an airspeed of 500 ft/s. The aircraft has a gross weight of 1
Naily [24]

Answer:

a) attached below

b) 0.0337

c) 2730.206 Ib

d) 2320.338 ft/min

Explanation:

<u>a) Plot of the drag polar for this aircraft </u>

first we will calculate :

Wing area (s) = Wing span (b) * Average chord length(c)

                       = 53.3 * 6 = 319.8 ft^2

Aspect ratio =  b^2 / s = 8.883

K = 1 / \pieAR = 1 /

Drag polar ( Cd ) = 0.02 + 0.044 C^2L

attached below is a plot of the drag polar

<u />

Attached below is the detailed solution of the remaining part of the question

6 0
3 years ago
Sketch the asymptotes of the Bode plot magnitude and phase for the open-loop transfer ()=100(S+1)/((S+10)(S+100)) Use MATLAB to
Salsk061 [2.6K]

The asymptotes of the open loop transfer are:

  • Horizontal: y = 0
  • Vertical: x = -10 and x = -100

<h3>How to plot the asymptotes?</h3>

The open loop transfer function is given as:

f(s) = 100(s + 1)/((s + 10)(s + 100))

Set the numerator of the function to 0.

So, we have:

f(s) = 0/((s + 10)(s + 100))

Evaluate

f(s) = 0

This means that, the vertical asymptote is y = 0

Set the denominator of the function to 0.

(s + 10)(s + 100)  0

Split

s + 10 = 0 and s + 100 = 0

Solve for s

s = -10 and s = -100

This means that, the horizontal asymptotes are s = -10 and s = -100

See attachment for the graph of the asymptotes

Read more about asymptotes at:

brainly.com/question/4084552

#SPJ1

6 0
2 years ago
determine the optimum compressor pressure ratio specific thrust fuel comsumption 2.1 220k 1700k 42000 1.004
Afina-wow [57]

Answer:

hello your question is incomplete attached below is the complete question

A) optimum compressor ratio = 9.144

B) specific thrust = 2.155 N.s /kg

C) Thrust specific fuel consumption = 1670.4 kg/N.h

Explanation:

Given data :

Mo = 2.1 ,  To = 220k , Tt4 = 1700 k, hpr = 42000 kj/kg, Cp = 1.004 kj/ kg.k

γ = 1.4

attached below is the detailed solution

6 0
3 years ago
PROMPT: Decide which 8 oz. serving of drink (Orange Juice or Lo-Carb Monster Energy®) will provide more energy to your brain cel
sveticcg [70]

Answer:

Orange Juice

Explanation:

  • Our body converts glucose to ATP which then available to be utilized as energy by brain cells. The amount of glucose in an orange juice is higher than Lo-Card monster hence it will provide more energy. We also need to look at ingredients listed in the Lo-Card Monster energy.
7 0
3 years ago
Read 2 more answers
A cold-rolled sheet metal that is 40 mm wide and has a thickness of 5.00 mm is going to be bent into a V shape with a 60° angle.
Artist 52 [7]
a= the force of gravity b= the amount of bicker to maple syrup ratio
5 0
3 years ago
Other questions:
  • The hull of a vessel develops a leak and takes on water at a rate of 57.5 gal/min. When the leak is discovered the lower deck is
    9·1 answer
  • What is the name for a part of a window that joins two windows into a single unit?
    12·1 answer
  • The boundary layer forms the thin region near a surface where the flow is affected by frictional forces. How does this layer cha
    14·1 answer
  • Caulking is recommended around the edges of partitions between apartments to... Group of answer choices reduce the need for trim
    15·1 answer
  • 3. (9 points) A square-thread power screw is used to raise or lower the basketball board in a gym, the weight of which is W = 10
    12·1 answer
  • A piece of corroded metal alloy plate was found in a submerged ocean vessel. It was estimated that the original area of the plat
    8·1 answer
  • A solid round bar with a diameter of 2.32 in has a groove cut to a diameter of 2.09 in, with a radius of 0.117 in. The bar is no
    11·1 answer
  • You are NASA. Build a space station on Mars that could support humans to live in for an extended period of time.
    9·1 answer
  • Que a state properties of Sounds ] 1 laws of replactions of light 2 2​
    7·1 answer
  • Consider a single crystal of some hypothetical metal that has the FCC crystal structure and is oriented such that a tensile stre
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!