1.9.3.2.4.Project tools

The tools allow to design from scratch or to rebuild existing project. Available tools can be divided into four groups: consumers of the energy, energy providers, plumbing components and others.

Consumer components are: Hot water demand, Heating element or Fan coil, Pool, Hot driven chillers (compression, adsorption, absorption, or passive) and Energy Sink.

Energy providers are: Solar Collector, Photovoltaic system, PV-Thermal hybrid system, any kind of boilers ( pellets, gas, electric, oil, wood or coal), Ground source loops, Ground water loops, Brine/Water or Water/Water heat pumps, District heating (Energy source or External heat exchanger are used to join district heat system with a local system).

Plumbing components: Pipe, Three way join, Three way valve, Pump, Outflow and inflow multiplier.

Other components: Controller, Storage tank, Battery, Cold Water, Building, Arrow, Label.

Button	Descr.	Button	Descr.	Button	Descr.
	Arrow		outflow multiplier		Battery
	Controller		Inflow multipler		Hot water demand
	Label		Collector		Cold water
	Pipe		Photovoltaics		Building
	Three way join		PVT collector		Heating element
	Three way valve		Boiler		Pool
	Pump		Ground source loop		Energy sink/source
	Storage Tank		Ground water loop		Heat driven chiller
	External heat exchanger		B/W or W/W heat pump		Recooler

1.9.4.Creating a project

Starting with the project, first of all the location of designed system must by chosen. Location can be input with the use of map or database. The coordinates of the bigger cites are placed into database. Therefore it is easier to find a right place using a map. It is possible to use search mechanism to find a place on the map or simply with double-click on the point on the map.

During creating a system with the use of the wizard only information about coordinates of localization can be entered. More information like a horizon data, obstructions, mutual shading etc. can be introduced by clicking on the ‘Project->Location of the system’.

According to the location a proper weather data is taken for calculations. Polysun uses the weather data generator Meteonorm (www.meteonorm.com) which produces a weather data profile for chosen location by interpolation data of weather stations and satellite weather data. Predicted data of solar irradiation, ambient temperature and humidity are accurate enough for simulation of solar heating and photovoltaic systems.

The easiest way to create project is to use a wizard.

The wizard starts-up each time when the POLYSUN is opened. It can be blocked by choosing another option than ‘Start project assistance’ in Options->Settings->General: After Starting Polysun. The wizard helps to create a system diagram in few simple steps.

Fig.1.9.4 The main three steps of Turing designing a system with the use of ‘Wizard’.

In the first step name of the project, a location and type of the electric grid are input.

The location can be taken from the database or can be selected from the map. In the case of selection on the map the approximate location of the projected system can be find with the use of search option (1) see Fig.1.7.5. More detailed place can be taken from the list of places (2). With the use of slider (3) a map can be zoomed. The right place is chosen by double click on the point on map (4).

Fig.1.9.5 Choosing location from the map

In the second step the proper template of the projected system is chosen (see Fig.1.7.6). By the description of Consumer/Loads (1), Energy providers (2) and some specific system parameters (3) like: system size, the type of collector/generator field and the template source/provider a number of templates (4) possible to choose can be decreased.

Fig. 1.9.6 Components of Wizard: Template window.

The available consumers/loads are: domestic hot water, space heating, pool and process heat.

The available energy providers are: solar system, boiler, heat pump, district heating, chiller and tank with heating element. You can choose ‘No’ – the system without specified energy source, ‘Yes’ – the system with specified source of energy and ‘n/a’ – it doesn’t matter if yes or no.

Click desired template and confirm with Continue button. Next steps of the Wizard depend on the kind of chosen template. Upon completion of all steps the calculation process begins.

Fig. 1.9.7. Window showing a progress of simulation.