Rankine_Reheat by Steven DeCaluwe https://padlet.com/steven_decaluwe/a0htxoea0eis en-us 2017-04-10 12:31:04 UTC 2017-04-10 16:01:12 UTC hello@padlet.com What did you learn about Rankine with Reheat? Why is it advantageous? steven_decaluwe https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165650678 2017-04-10 12:34:12 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165650678 How is analyzing a Rankine Reheat cycle different from the standard Rankine cycle? steven_decaluwe https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165650842 2017-04-10 12:34:56 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165650842 What is something that is unclear about the Rankine cycle (with or without reheat)? steven_decaluwe https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165651220 2017-04-10 12:37:00 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165651220 What did you learn https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706781 This allows you to reduce your waste heat without having to pay for more expensive materials making it a more viable option for real world use.]]> 2017-04-10 15:49:45 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706781 analyzing rankine reheat vs standard rankine https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706827 The steps to analyzing the states in the Rankine Reheat cycle are the same as the Standard Rankine cycle but there are two more steps involved when reheating and cooling down from the reheated state.]]> 2017-04-10 15:49:56 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706827 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706842 You reheat the cycle to create more work and to make sure that you do not damage the material of your system]]> 2017-04-10 15:50:00 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706842 It is advantageous because it allows for a more efficient cycle without sacrificing real world material weaknesses https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706849 2017-04-10 15:50:02 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706849 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706856 Rankine can give better efficiencies at lower temperatures than the other cycles. Although it's efficiencies suck]]> 2017-04-10 15:50:03 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706856 It's not https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706857 2017-04-10 15:50:03 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706857 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706858 You have two work outputs from the turbines and two heat inputs but analysis is the same

]]> 2017-04-10 15:50:03 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706858 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706860 Basic process for analyzing Rankine cycle]]> 2017-04-10 15:50:04 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706860 Yo Yo Yo https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706923 it keeps the quality very high and the temperature of the boiler low]]> 2017-04-10 15:50:13 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706923 B/c https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706934 you have 2 turbines and 2 heat additions]]> 2017-04-10 15:50:15 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706934 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706942 There are two inputs for heat and two turbines. Everything else is the same]]> 2017-04-10 15:50:16 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706942 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706950 Reheating allows us to work around the restrictions set by the materials rather than Thermo]]> 2017-04-10 15:50:19 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706950 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706952 I learned that ]]> 2017-04-10 15:50:19 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165706952 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707002 Reheat can avoid low qualities in the turbine, this is advantageous to the longevity of the turbine system working ]]> 2017-04-10 15:50:25 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707002 Thermo is hard... https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707005 2017-04-10 15:50:26 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707005 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707016 You have to deal with two turbines instead of one, just another another heat input and but the rest is the same steps]]> 2017-04-10 15:50:28 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707016 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707038 why do we say the rankine cycle is the most efficient, even though in some analysis there seems to be more efficient modes?]]> 2017-04-10 15:50:31 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707038 Are temperatures not important to the Rankine cycle? (Only for table look ups) https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707042 2017-04-10 15:50:32 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707042 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707045 I learn that reheat good because more work output with reheat and you don't have to destroy all your stuff to get all the work

]]> 2017-04-10 15:50:32 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707045 How to interpret our s4 value for quality https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707049 2017-04-10 15:50:33 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707049 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707064 It can help with being stuck between a rock and a hard place 

]]> 2017-04-10 15:50:35 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707064 Rankine Reheat https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707071 I learned that rankine reheat is advantageous because it keeps the quality very high and the boiler temp very low

]]> 2017-04-10 15:50:36 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707071 The ranking reheat cycle allows you to increase the efficiency of the system https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707082 2017-04-10 15:50:38 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707082 What did you learn https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707093 By reheating the cycle you increase the quality which is advantageous because the turbine will last for much longer]]> 2017-04-10 15:50:39 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707093 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707098 The rankine reheat cycle is advantageous becasue it is expanding it's area under the curve increasing effciency, or increasing work output]]> 2017-04-10 15:50:40 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707098 Rankine with reheating allows for similar work to be done by a boiler without requiring high pressures or temperatures. https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707107 2017-04-10 15:50:42 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707107 Rankine https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707114 2017-04-10 15:50:43 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707114 How its different.. https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707137 It is different because you now have two Qdot H as well as two turbines and a third pressure. ]]> 2017-04-10 15:50:46 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707137 Allows you to send heat back so that you can save materials and money while doing the process https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707142 2017-04-10 15:50:48 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707142 You can create more work without damaging your components https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707147 2017-04-10 15:50:48 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707147 Rankine with reheat https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707149 With reheating we are able to increase our work net generated because before we get rid of all our super heated vapor, we can reheat it and increase our work area. This is larger than the Qc waste heat, so our efficiency will increase. ]]> 2017-04-10 15:50:49 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707149 Ranking Reheat https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707151 Mo Boilers = Less Heating Material Problems due to overheating?]]> 2017-04-10 15:50:49 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707151 Why is it the most efficient? https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707155 This is still unclear]]> 2017-04-10 15:50:50 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707155 Dealing with a reheat cycle for a rankine cycle is similar to the processes pf reheating that we used before for the Brayton cycle https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707158 2017-04-10 15:50:50 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707158 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707159 It's different because now there's 6 states instead of 4]]> 2017-04-10 15:50:50 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707159 Mot Much https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707167 There are extra steps because there are more states to consider, but the analysis is the same for all. ]]> 2017-04-10 15:50:52 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707167 Advantages to reheat https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707173 Reheat is advantageous because it's the "best of both worlds" - you get a mix between not too high of temperature and not too high of pressure

]]> 2017-04-10 15:50:53 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707173 It allows you to have the efficiency of higher pressures/temperatures without sacrificing the longevity of parts https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707181 2017-04-10 15:50:53 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707181 Rankin's cycle allows you to compress https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707188 2017-04-10 15:50:55 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707188 I have learned that material constraints limit real world applications https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707190 2017-04-10 15:50:55 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707190 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707194 I learned that the entire cycle is reheated. This creates more work and the entire cycle becomes more efficient ]]> 2017-04-10 15:50:56 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707194 yaaaa boiiiiii https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707197 we analyze two turbines instead of one, and then two heat inputs instead of one. We just have a few more steps to get to the pot'o'gold but it's all the same really. ]]> 2017-04-10 15:50:56 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707197 There are just more terms that you have to deal with like and extra work output and heat input but otherwise it is the same. https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707202 2017-04-10 15:50:58 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707202 It allows you to increase efficiency while mainaning reasonable temperatures for cheaper materials https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707210 2017-04-10 15:50:59 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707210 Being able yo https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707214 2017-04-10 15:51:00 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707214 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707224 There are two varying work outputs for the ranking reheat cycle versus the ranking cycle.]]> 2017-04-10 15:51:02 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707224 I learned that the rankine cycle is dependent on the materials that compose it https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707225 2017-04-10 15:51:02 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707225 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707233 You can reduce waste heat by recycling it]]> 2017-04-10 15:51:03 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707233 It overcomes the problems associated with too low a quality and too hot of a max temp while still operating at high pressures https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707246 2017-04-10 15:51:06 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707246 The reheat cycle requires more steps. It has the same general process, but just more to it. https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707254 2017-04-10 15:51:07 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707254 It makes a cycle able to produce more power for certain design restraints. https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707256 2017-04-10 15:51:08 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707256 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707308 I learned that increasing the pressure will increase efficiency but without re heat temp or quality become too high, reheat allows you to avoid these problems by adding a second turbine]]> 2017-04-10 15:51:17 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707308 It keeps high quality https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707327 2017-04-10 15:51:21 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707327 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707343 It is better for actual purpose! ]]> 2017-04-10 15:51:24 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707343 Allows you to use your waste and work at higher temperatures https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707375 Above]]> 2017-04-10 15:51:29 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707375 Reheat https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707376 You are able to resolve any worries about melting your materials by reducing the heat of the fluid going through through them]]> 2017-04-10 15:51:29 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707376 Rankin and reheat https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707445 Rankin and reheating is advantageous because you are more work out by only having to pump it once. You are resuing the waste heat to make more work. More efficient than wasting the heat to pump and reheat]]> 2017-04-10 15:51:42 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707445 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707505 2 Qhs ]]> 2017-04-10 15:51:53 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707505 https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707536 temperatures are important for this cycle ]]> 2017-04-10 15:51:57 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707536 rankine cycle: allows us to experiment with inefficiencies in a graphical manner. https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707650 2017-04-10 15:52:16 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165707650 Hi, I can't figure out how to answer these questions. https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165708470 2017-04-10 15:54:33 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165708470 will the rankine cycle be on test 2? https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165710729 2017-04-10 16:01:12 UTC https://padlet.com/steven_decaluwe/a0htxoea0eis/wish/165710729