Heat pump sizing – How do you find the optimum solution for your project?
Would you like to dimension a heat pump or a heat pump cascade, or optimize existing systems in terms of their efficiency and components? Proper heat pump sizing is essential, as it directly impacts the efficiency, cost-effectiveness, and overall customer satisfaction of your project.
With Polysun, you have access to professional planning software that supports accurate and efficient heat pump sizing. By simulating heating loads and building-specific heat demand, and by matching the heat pump output accordingly, you can evaluate different system options and gain the planning confidence you need.
Heat pump size or heat pump cascade size: comparison of variants and optimisation
An incorrectly dimensioned heat pump can lead to increased operating costs, reduced performance and premature wear. Without simulating the different system variants, there is uncertainty about whether you will achieve your goals such as economic efficiency, CO2 savings or self-consumption.
Polysun contains specific manufacturer data and component libraries. This enables you to find the optimum variant to achieve your goals for your problem.
Heat pump design
- Detailed load profiles: Analyse the heat demand over the entire year.
- Climate data integration: Take local weather conditions into account for realistic planning.
- Component optimisation: Find the ideal size for heat pump, buffer cylinder, auxiliary heating and add further components to your energy system
- Profitability calculation: Determine amortisation times
Why customers use Polysun for heat pump and heat pump cascade sizing
Heating and cooling with a heat pump
- Optimal sizing for both operating modes
- Integration of underfloor heating for efficient heating and passive cooling
- Consideration of peak loads during heating and cooling periods
Power-to-Heat: Combination Heat pump and photovoltaics
- Maximization of self-consumption of PV electricity
- Integration of an energy management system to control the heat pump based on PV yield
- Sizing of buffer storage to utilize surplus electricity
- Calculation of annual yield for PVT systems
Combination heat pump and ground source loops
- Determination of the optimal borehole length and quantity
- Consideration of geological conditions
- Design for long-term efficiency over decades
Regeneration of geothermal heat sources for heat pumps
- Planning of regeneration strategies to prevent long-term ground cooling
- Integration of free cooling for partial regeneration
- Design of PVT systems for borehole heat exchanger regeneration
Design of local heating networks with heat pumps
- Sizing of central heat pump cascade systems for multiple buildings
- Creating variants when planning heat pump cascades
- Optimization of flow temperatures in the network
- Integration of renewable heat sources in low-temperature district heating networks
Additional challenges
- Consideration of utility provider’s blocking times in system sizing
- Selection of the appropriate operating mode (monovalent, monoenergetic, bivalent)
- Integration into existing heating systems (hybrid solutions)
- Domestic hot water preparation at high temperatures
- Load management in multi-family houses or commercial buildings
Sizing of different heat pump types
Air-Source Heat Pumps
- Accurate simulation of air-to-water heat pumps based on manufacturer data
- Modeling of both cycling and modulating air-source heat pumps
- Optimization of system efficiency through precise performance calculations
Brine-Source Heat Pumps
- Detailed design of borehole heat exchanger systems
- Calculation of optimal borehole length based on soil properties and heating demand
- Simulation of long-term ground temperature development
- Consideration of regeneration strategies for sustainable efficiency
Water-Source Heat Pumps
- Sizing of water-to-water heat pumps for various water sources
- Optimization of system performance through precise component selection
- Simulation of heat pumps in combination with surface water or groundwater
FAQ
How do I size a heatpump cascade of two heat pumps?
Polysun offerst specific templates to make desiging of heatpump cascades easy.
Determine heat demand: Precise sizing of a cascade system with two heat pumps involves several key steps: Assess the building’s annual heating and domestic hot water demand as well as the peak load.
Distribute output: Divide the total required output sensibly between the two heat pumps—often, one unit covers the base load while the second handles peak loads.
System simulation: Use simulation software (such as Polysun) to model real-world operation. This allows you to compare different configurations and determine the optimal output distribution, control strategy, and buffer tank size.
Hydraulics and control: Ensure proper hydraulic balancing and intelligent cascade control so both heat pumps work efficiently together and are not oversized.
Is Polysun a heat pump calculator?
Yes, Polysun allows you to design heat pumps as part of an overall energy system. It takes into account heating loads, heating demand, borehole heat exchangers, and additional heat generators such as gas boilers and combined heat and power (CHP) units.
Are there training sessions for heat pump sizing?
Yes, our simulation experts offer you an efficient way to learn how to size heat pumps with Polysun using your own project as an example.
Does Polysun include data from various manufacturers?
Yes, Polysun contains heat pump data from different manufacturers. In the Polysun catalog, you can choose between anonymous and manufacturer-specific components to select your preferred heat pump.
Can Polysun be used for large-scale projects?
Yes, Polysun is used by our customers for large-scale projects, including industrial sites, commercial complexes, and district energy systems. You can select large heat pumps from our catalog or define your own custom heat pump models.
At what project stage is Polysun applied?
Polysun is used in the feasibility study, preliminary planning, conceptual design, approval planning, and detailed design for energy system comparison and planning. During construction supervision and operational support, Polysun helps optimize energy concepts and ensure the successful operation of the energy system.
Can I, as a project owner, bring Polysun into my project, and what are the benefits?
Yes, you can book project support from our Polysun experts to use your time efficiently. Our experts will develop your project together with you in Polysun, allowing you to reach your project goals quickly and directly. Feel free to contact us, and we will discuss the details with you.
Can I optimize existing heat pump systems with Polysun?
Yes, in Polysun, you can model existing heat pump systems and test optimization strategies. This allows you to operate your existing heat pump systems in a technically and economically optimized way.