Determine the thermal efficiency

Assignment Help Mechanical Engineering

Reference no: EM13949563

1. At steady state, a power cycle develops a power output of 10 kW while receiving energy by heat transfer at the rate of 10 kJ per cycle of operation from a source at temperature T. The cycle rejects energy by heat transfer to cooling water at a lower temperature of 300 K. If there are 100 cycles per minute, what is the minimum theoretical value for T, in K?

2. A power cycle operates between hot and cold reservoirs at 600 K and 300 K, respectively. At steady state the cycle develops a power output of 0.45 MW while receiving energy by heat transfer from the hot reservoir at the rate of 1 MW.

(a) Determine the thermal efficiency and the rate at which energy is rejected by heat transfer to the cold reservoir, in MW.

(b) Compare the results of part (a) with those of a reversible power cycle operating between these reservoirs and receiving the same rate of heat transfer from the hot reservoir.

Reference no: EM13949563

Questions Cloud

Claim for an ambient temperature : 1. An inventor claims to have developed a food freezer that at steady state requires a power input of 0.6 kW to extract energy by heat transfer at a rate of 3000 J/s from freezer contents at 270 K. Evaluate this claim for an ambient temperature of..

Monthly data on the cpi and quarterly data on the gdp : Suppose we have monthly data on the CPI and quarterly data on the GDP. We have information only on the first two periods. We are given that the CPI increased by 0.5% from January to February, while GDP increased by 1.3% from Q1 to Q2. We would like t..

Millions of dollars effort to stop a hand-full of people : Is it cost effective to spend millions and millions of dollars in an effort to stop a hand-full of people" who are bound to terrorize the United States?

Assume the interest rate is a positive value : Which of the following will increase the future value of your deposit assuming that all interest is reinvested?

Determine the thermal efficiency : Compare the results of part (a) with those of a reversible power cycle operating between these reservoirs and receiving the same rate of heat transfer from the hot reservoir.

Explains the cost of a bag of premium oranges : Suppose that a roadside orange stand in Florida charges $1 for a bag of "standard" oranges and $2 for a bag of "premium" unblemished oranges, which are guaranteed to be perfectly ripe. In Montana, consumers must pay $3 per bag to transport FL oranges..

Roles of the clinical nurse leader designation : Identify the educational preparation and role(s) of the clinical nurse leader (CNL) designation. Give an example of how the CNL influences direct patient care whether in a hospital or out in the community.

Significance and purpose of the secure freight initiative : What are the components that contribute to port security planning, why are they important, and what aspects of security planning are considered in port facility operations?

Explain how data mining be used to imporve customer service. : Please explain how a databses management system (DBMS) and data mining can help a motor vehicle maintenance center improve its services, and what tables would be needed in such a database

User Account

All Pages