Question: A power system for space applications is based on a Rankine cycle using potassium as the working fluid. The working fluid at the turbine inlet

A power system for space applications is based on a Rankine cycle using potassium as the working fluid. The working fluid at the turbine inlet is at 1200 K and 2.0 bar, and is fixed. The pump inlet is saturated liquid and the pump work is negligible. The turbine efficiency is 0.7. In space the condenser must be a radiator, and weight is of crucial importance. Determine the operating conditions corresponding to minimum-weight radiator for a given turbine power. Calculate and plot the ratio of radiator area to power output (m²/kW) versus the condenser temperature. Try a condenser temperature range from 800 to 1100 K. The thermal power discharged by the condenser is radiated according to the equation Q_c = σ^T4A, where A is the radiator area, and σ is the physical constant σ = 5.68 × 10⁻⁸W/(m² · K⁴).

Step by Step Solution

★★★★★

3.46 Rating (162 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

To determine the operating conditions corresponding to the minimumweight radiator for a given turbine power we need to optimize the Rankine cycle by v... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Thermodynamics Fundamentals Questions!

A simple Rankine cycle with R-22 as the working fluid is to be used as a bottoming cycle for an electrical generating facility driven by the exhaust gas from a Diesel engine as the high temperature...

A gas turbine power plant operates on a simple Brayton cycle with air as the working fluid having a pressure ratio of 8. The compressor efficiency is 80% and its inlet conditions are 100 kPa and 300...

An efficient power system for space applications is based on a Rankine cycle using potassium as the working fluid. The working fluid at the turbine inlet is at 1 2 0 0 K and 2 . 0 bar, and is fixed....

You may recall that we worked through a Rankine power cycle example at the beginning of this course, when we estimated the amount of time that a lump of coal would power a light bulb. In that...

Question: Case 16 The Maria and Sancho Ruiz Case A COMPREHENSIVE FINANCIAL PLANNING CASE Maria Ruiz recently turned age fifty. She heard about your firm from a neighbor who recommended your services...

a) Briefly explain the practical advantages of using a Rankine power cycle over the Carnot power cycle. b) A Rankine power generation cycle is using water as working fluid. Saturated liquid water...

1 1 . 4 1 An ocean thermal energy conversion system is being proposed for electric power generation. Such a system is based on the standard power cycle for which the working fluid is evaporated,...

An ocean thermal energy conversion system is being proposed for electric power generation. Such a system is based on the standard power cycle for which the working fluid is evaporated, passed through...

Question 1 A steam power cycle with regeneration as shown below on the T-s diagram employs a single open feedwater heater for efficiency improvement. The fluids mix with each other in an open...

Below are the 5 factors do we need to consider in order to choose the right form for our business. Explain how each one affects our decision on which form to use. (one sentence each) Transferability...

Explain why the current tax liability at the end of the reporting period may not equal the income tax expense for the period.

The use of stock as a meaningful portion of a transaction generally leads to a: Question 16 options: A) Higher valuation B) Lower valuation C) Higher multiple D) It depends

Medical: Red Blood Cell Volume Total blood volume (in ml) per body weight (in kg) is important in medical research. For healthy adults, the red blood cell volume mean is about m 5 28 ml/kg...

Explain what is wrong with the following statement: At its isoelectric point, the charge on all molecules of a particular protein is 0.

Calculate the pH at each of the following points in the titration of 50.00 mL of 0.010 0 M NaOH with 0.100 M HCl. Volume of acid added: 0.00, 1.00, 2.00, 3.00, 4.00, 4.50, 4.90, 4.99, 5.00, 5.01,...

Calculate the pH at each point listed for the titration of 50.0 mL of 0.050 0 M formic acid with 0.050 0 M KOH. The points to calculate are V b = 0.0, 10.0, 20.0, 25.0, 30.0, 40.0, 45.0, 48.0, 49.0,...

Case 5: Mr. Ahmed leader auditor of D&Z Accounting and auditing Firm together with his team: Mr. Saud and Mr. Khalid the assisting auditors are doing of final draft of audit report for Majan...

Question 19 5 pts Bluebird Bakery produces bread sticks. The primary direct material is flour. Here are data regarding Bluebird's production activity for the month of May: Standard quantity of flour...

On January 1, 2021, you deposited $6,000 in a savings account. The account will earn 9 percent annual compound interest, which will be added to the fund balance at the end of each year. Required: 1....