BTES 1.0 templates

The BTES 1.0 templates are divided into different types of regime temperature combinations for heating and cooling end-units. To clarify this aspect the different templates are the following.

LT heating + HT cooling

Working principle

The working principle of a geothermal system is divided into two main operating conditions, winter and summer. Of course, if there is both heating and cooling demand at the same time, both conditions are active.

Winter

In the winter, when there is heating demand, the heat pump will supply heating to the building. When the heating provided by the heat pump is insufficient, the boiler will deliver the remaining required heating. While the heat pump is delivering heat, it’s also extracting heat from the BTES system on the evaporator side. Extracting heat is the same as injecting cold, so in this operating condition the BTES system will cool down.

BTES 1.0
Heat Pump (HP)
Boiler
Low Temperature (LT) heating equivalent end-unit
Hot storage vessel
Cold storage vessel

Summer

In the summer, when there is cooling demand, the cooling stored in the BTES system (in the winter) will be used to cool down the building. If the delivered cooling from the BTES system is insufficient, the chiller will deliver the remaining required cooling. When cooling is extracted from the BTES system en supplied to the building, the BTES system will heat up, increasing its overall temperature.