Energy Demand Simulation for Optimal HVAC System Design
For engineers and planners, it is essential to consider the individual energy demands of the projects they design, such as residential buildings, hospitals, district heating networks and industrial processes, in order to plan systems effectively. This process provides the basis for correctly sizing components such as heat pumps, boilers, combined heat and power (CHP) plants, and buffer storage tanks. With Polysun, you can simulate all common energy demand profiles, including heating, cooling and electricity demand, in order to identify the optimal design and sizes of components for efficient energy systems.
Why Energy Demand Simulation is Critical for Engineers and Planners?
Accurate energy demand simulation prevents over- or under-sizing of energy generation systems, such as combinations of heat pumps. Oversizing results in unnecessarily high investment costs, reducing the project’s economic viability. Undersizing can lead to comfort loss or system overload, shortening the system’s lifespan and decreasing energy efficiency. By using Polysun for energy demand simulation, you can plan reliable, efficient, and cost-effective energy systems for buildings.
Domestic hot water, heating & cooling energy demand
The thermal energy demand comprises the heating and cooling energy demand. Polysun offers flexible and versatile approaches to specify this energy demand for designing an efficient energy system.
Electricity Consumption & Generation
Consumption profiles can either be selected from a database or imported based on measured data. This allows the sizing of electricity generators (e.g., PV, CHP, PVT systems) to be optimally aligned with electricity consumption (e.g., heat pumps, electric vehicles, battery storage).
Flexibility with Energy Sink/Source
Heat or cooling loads and sources can be individually configured. Using the “energy sink/source” component, all common thermal load profiles—such as cooling demand, waste heat utilization, or process heat—can be modeled to size HVAC systems based on energy demand effectively.
Heating and Cooling Energy Demand in Energy System Design
Polysun offers multiple approaches to simulate heating and cooling energy demand. These include modeling buildings with customizable standard dimensions when load profiles are unavailable, using models based on heating cost statements, or employing detailed hourly profiles. Additionally, Polysun supports importing load profiles from other building simulation software, such as EnergyPlus or IDA ICE, ensuring accurate energy demand simulation based on available data for optimal system design.
Electrical Demand in Energy System Planning
Modern energy systems for buildings and districts incorporate various electrical components. Polysun enables precise planning by accounting for electrical generators—like photovoltaic systems, combined heat and power plants, or battery storage—and electrical consumers, such as heat pumps, charging stations, or electrical profiles. This allows you to align electricity generation with actual consumption, optimizing system efficiency and maximizing self-consumption.
Why Customers Choose Polysun for Energy Demand Simulation?
Streamlined Simulation & Visualization
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Easily visualize complex energy generation and consumption patterns with Polysun
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Track thermal and electrical energy flows throughout the year to size HVAC systems based on energy demand with precision
Controller Customization
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Choose from pre-programmed standard control strategies
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Customize your own strategy with Polysun to size HVAC systems based on energy demand efficiently
Model Energy Demand
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Flexible approaches tailored to the available data
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Validated building models
Flexibility & System comparison
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Effortlessly compare a wide range of design variants, both technically and economically
Maximize Efficiency
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Effortlessly create and compare energy and district concept scenarios with Polysun
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Build adaptable systems with detail tailored to your data.
Extensive Component Library
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Access a robust database of all standard components for energy and district energy planning concepts.
FAQ
What methods does Polysun offer for determining heating and cooling energy requirements?
Polysun provides various approaches to determine heating and cooling energy demand of buildings and districts. Users can model buildings with customizable standard dimensions when detailed load profiles are unavailable. Alternatively, models based on full load hours, heating cost statements, or detailed hourly load profiles can be used. Additionally, Polysun supports importing load profiles from other building simulation software, such as EnergyPlus or IDA ICE, enabling flexible energy demand determination tailored to the available data.
Can Load Profiles from Other Programs (e.g., EnergyPlus, IDA ICE) Be Imported into Polysun?
Yes, load profiles from programs like EnergyPlus or IDA ICE can be imported into Polysun. First, the building is modeled in detail within the respective simulation software (e.g., EnergyPlus, IDA ICE). Then, the generated energy demand files with hourly resolution can be imported into Polysun, serving as the basis for further planning and energy system design.