Suppose That the Department of Energy Develops a New Reversible

question 65

Multiple Choice

Suppose that the Department of Energy develops a new reversible engine that has a coefficient of performance (COP) of 4.0 when operated as a refrigerator and a COP of 5.0 when operated as a heat pump.What is its thermal efficiency when operated as a heat engine doing work?

• A)10%
• B)20%
• C)25%
• D)45%
• E)80%

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Definitions:

Percentage of Sales

A financial ratio that compares a company’s various expenses, investments, or profits as a percentage of total sales.

Greatest Use of Funds

The most efficient or impactful way in which an organization chooses to allocate and use its financial resources.

Accounts Receivable

Refers to the money owed to a company by its customers for goods or services already delivered but not yet paid for.

Accounts Payable

Liabilities of a business that are due to be paid to creditors within a short period of time, typically within a year.