QuestionsHow to do external simulations? multi-period? what are the class system?How to generate composite curves???userEnergy streams (e.g.heating) are mass streams? How to set up optimization problem?short cuts? (e.g. change all variables) What does it do?Prepare strutured information for energy system optimization (optimization library)NoteOpen a new project: Project/Project DirectoryET:STEPS:Definition of the technology -> Assigning a name and providing documentation for the ETDefinition of inputs -> measured data or constant values for the technologyOutputs -> What should be calculated or returned from the calculations contained in the technology (i.e. these are calculated in the pre-compute phase prior to the optimisation)Layers - > Where streams of energy, material, economics or impact are related and connections are made between process unitsUnits - > The building blocks of the technologyStreams -> Individual streams of energy, material, economic cost or environmental impactUnit   ET.addUnit('unit_A', {type = 'Process|Utility'})  Processes have a set size whereas utilities are allowed to vary between the lower limit of Fmin and the upper limit of Fmax. Stream   ET['unit_A']:addStreams{heatIn = ms{'layer_A','in or out',''}}  To clarify: streams that are ‘out’ of a unit are ‘in’ for the layer and vice versa.  Osmose workshopone cluster : city (location)resources: gas & electricity, cost????package.loaded??local ET = require ''??? Osmose tutorialask Luc for the exercise sheettask1PROBLEMSno figure was displayedtask2task3Cooling System 1: All Air System + Outdoor Air Unit (OAU)ET.OAUInput: T_outdoor, T_supply, m_required_airflowOutput: rate of heat removal = m*cp*(T_outdoor - T_supply)