Instructional Design Document Rankine Cycle STAM Interactive Solutions

Demo Outline (For reference) ‏ Interactive pageEfficiency4 Animated pageRankine Cycle3 Animated pageOrigin of Rankine Cycle2 Animated pageGas-Vapor T-S Diagram1 Page TypeTopic NameTopic Number

Change done on slide 14Quiz Question 5 Add “Liquid Metals” to list of choices 4 Change done on slide 12Quiz Question 3 Modify answer wording as marked 3 Slides 5, 6, 7 & 8 - saturation boundary made realistic Overall Try to make the saturation boundary realistic – try to get from actual steam tables 2 Slide 5 – All areas marked as suggestedSlide 5 - Origin of Rankine Cycle – show superheated steam, shaded added areas as compared to Carnot 1 Changes reflected on slide no.Changes Suggested by Prof. Gaitonde Change Log (as per the minutes pdf) ‏

Rankine Cycle Applied Thermodynamics: Power Cycles An important aspect that lead to modification of Carnot Cycle is the design of practical heat engines. Thus Rankine Cycle is a modified Carnot Cycle.

Rankine Cycle Applied Thermodynamics: Power Cycles Gas-Vapor T-S Diagram

Rankine Cycle Applied Thermodynamics: Power Cycles Origin of Rankine Cycle

Rankine Cycle Applied Thermodynamics: Power Cycles Rankine Cycle

Applied Thermodynamics: Power Cycles Efficiency Efficiency (%) ‏ Set T1 and T3. T Compressor Inlet Temperature (T1): Kelvin (Range: 283 to 313K) ‏ Turbine Inlet Temperature (T3): Kelvin (Range: 450 to 550K) ‏ Saturation Boundary made realistic Note: The temperature bounds are illustrative, since the typical limits depend on the working fluid. Also the efficiency displayed is indicative.

Rankine Cycle Applied Thermodynamics: Power Cycles Resources Books: 1.G.J.Van Wylen's, "Thermodynamics“. Reference Links: 1.

Rankine Cycle Applied Thermodynamics: Power Cycles A Rankine Cycle is an improvement on the Carnot Cycle a modification of the Carnot cycle to yield higher efficiency a modification of the Carnot cycle that results in lower efficiency but yields a design that is practical

Rankine Cycle Applied Thermodynamics: Power Cycles Rankine cycle involves a closed cycle an open cycle depends on the working fluid

Rankine Cycle Applied Thermodynamics: Power Cycles The process in the Rankine Cycle that involves pumping the working fluid is of the same nature as the Carnot Cycle is isobaric, and uses more energy than an isothermal process would is isobaric, and uses less energy than an isothermal process would if the right working fluid is selected is isentropic, but uses almost the same energy as that in an isothermal process, because a liquid is being pumped

Rankine Cycle Applied Thermodynamics: Power Cycles To increase the efficiency of the Rankine Cycle the pressure in the boiler should be lowered and the temperature in the condenser should be lowered the pressure in the boiler should be raised and the temperature in the condenser should be lowered the pressure in the boiler should be raised and the temperature in the condenser should be raised the pressure in the boiler should be lowered and the temperature in the condenser should be raised

Rankine Cycle Applied Thermodynamics: Power Cycles The most common working fluid encountered in Rankine-Cycle based machines is Water / Steam Ammonia Freon Liquid Metals