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3 years ago

A heat pump cycle whose coefficient of performance is 2.5 delivers energy by heat transfer to a dwelling at a rate of 20 kW.

Mathematics

1 answer:

jasenka [17]3 years ago

3 0

Answer:

Net power = 20kW

B.) $128

Step-by-step explanation:

Given that :

Coefficient of performance = 2.5

Rate = 20kW

The net power required to operate the heat pump :

Energy delivery rate / Coefficient of performance

= 20kW / 2.5

= 8kW

B.) Given that electricity cost equals $0.08 per kW

If pump operates for 200 hours

Total energy used in kWhr :

8kW * 200= 1600kW

Cost per kW = $0.08

1600 * 0.08 = $128

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Answer:

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Step-by-step explanation:

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3 years ago

Which is the slope of the line that passes through the points (4, 2) and (6, 7)?

denis23 [38]

Answer:

$\displaystyle m = 5$

General Formulas and Concepts:

Pre-Algebra

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Order of Operations: BPEMDAS

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Parenthesis
Exponents
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Step-by-step explanation:

Step 1: Define

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7 0

3 years ago

Read 2 more answers

nikdorinn [45]

Answer:

the answer is 66°

Step-by-step explanation:

As it is given that triangle ABC is similar to triangle DEF so

< A = < D ( being corresponding angles of similar triangles)

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3 years ago

What is 5 1/18 converted

Paul [167]

Answer:

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Step-by-step explanation:

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3 years ago

Which set of values could be the side lengths of a 30-60-90 triangle?

diamong [38]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers