Final answer:
The appropriate types of systems to be modelled in the domestic hot water screen are B) Domestic hot water only and C) Combination of space and water heating, which include on-demand electric hot water heaters and solar heating methods.
Step-by-step explanation:
When considering the types of systems that should be modelled in the domestic hot water screen, it's essential to recognize the various heating methods that can be employed in homes. Based on the information provided, we can discuss several options:
- Domestic hot water only: On-demand electric hot water heaters supply heat to water when needed, making them an efficient choice for modeling domestic hot water systems.
- Combination of space and water heating: Solar heating is an example that can provide both domestic hot water and home heating. It captures solar heat, which can be used for space heating through south-facing windows and for water heating.
- Geothermal heating only: Accessing geothermal heat can be a method for providing heating; however, it is often location-specific and might not be suitable for general modeling of domestic hot water systems.
Thus, the types of systems that would be appropriate to model would be B) Domestic hot water only and C) Combination of space and water heating, depending on whether the focus is solely on water heating or on both water and space heating.