ApartmentsGrid¶
ApartmentsGrid is a 8 zones building located in Spain, Tarragona. It has a total surface area of 417.12m2 and a total volume of 1042.83m3.
Thermal systems¶
Apartments thermal system consists of a centralized water-to-water geothermal heat pump (HP) system, which extracts heat from the ground through a vertical ground heat exchanger, and provides hot water for the indoor fan coil units (two units per apartment) and the Domestic Hot Water (DHW). The DHW system is composed by four storage systems, one for each household, and consist in a four node-stratified tank. Heating loop circuit from the heat pump is connected to the bottom half part of the tanks and electrical heaters are placed on the top part acting as auxiliary systems.
Electrical systems¶
Regarding the electrical part, Apartments system includes a PV array, a community battery and an electric vehicle (EV). The active surface area of the PV panels is 58m2 with an inclination of 40° and south oriented. Rated electrical power output of the PV generator is 10750W. In the grid scenario, community battery and electric vehicle charging are used to reduce the amount of electricity exchanged from the grid. The community battery capacity is 10kWh and it is composed by a single string of 5 modules in series. The maximum power for charging is 4000W and for discharging is 4000W. The EV battery has a capacity of 20kWh and two modules in parallel compose it. The maximum power for charging is 3700W. It is assigned to the third apartment.
Controllable components¶
Fan coil control¶
In order to control rooms temperature there is a single set point for each apartment.
Set point (thermostat) temperatures of the thermal zones are compared with the actual temperatures sensed with the Energy Management System (EMS) sensors of EnergyPlus. A temperature hysteresis control with a dead band of 0.51°C is implemented with an internal program. The heat provided by the fan coils is directly managed with the EMS actuator Fan Coil Air Mass Flow Rate to mimic an on-off two-stage control. In addition, in order to communicate with the HP, fan coils launch a binary signal each time step, one if heating is needed in the zone or zero for the contrary case.
Storage tank control¶
Storage tanks present two thermostats, one in the top part (Node 1) and the other in the middle bottom part (Node 3). Only node 3 is controlled by the user.
Node 1 temperature is controlled by an electrical heater and by a hysteresis control with a dead band of 2°C. On the other hand, the bottom part is connected with the HP loop and is controlled by a hysteresis control with a dead band of 5°C. As for the fan coils, storage tanks launch a binary signal to the HP based on the bottom part control.
Heat pump control¶
The user has the possibility to control the water supply temperature of the pump.
No active cooling system is implemented, a free cooling strategy is applied during summer season. This strategy is modelled with an enhanced air infiltration rate from June to September. Summer season in Spain can reach high temperature such as 35°C. This strategy allows maintaining rooms’ temperature into an acceptable range.
Electric components control¶
It is possible to interact directly with the power charge/discharge of the community battery. On the other hand, it can only interact with the charging profile of the EV battery, as the discharge profile is a predefined behaviour of the EV. In practice, this control works with a predefined constant design value (maximum battery charge/discharge power) and with a correction fraction that comes from the optimization.
Simulation inputs¶
For more detail, please check the documentation The Apartments environment or the source code energym.envs.apartments.apartments.Apartments.
Variable Name |
Type |
Lower Bound |
Upper Bound |
# States |
Description |
|---|---|---|---|---|---|
P1_T_Thermostat_sp |
scalar |
16 |
26 |
Floor 1 thermostat setpoint (°C). |
|
P2_T_Thermostat_sp |
scalar |
16 |
26 |
Floor 2 thermostat setpoint (°C). |
|
P3_T_Thermostat_sp |
scalar |
16 |
26 |
Floor 3 thermostat setpoint (°C). |
|
P4_T_Thermostat_sp |
scalar |
16 |
26 |
Floor 4 thermostat setpoint (°C). |
|
Bd_T_HP_sp |
scalar |
35 |
55 |
Heat pump temperature setpoint (°C). |
|
P1_T_Tank_sp |
scalar |
30 |
70 |
Floor 1 tank temperature setpoint (°C). |
|
P2_T_Tank_sp |
scalar |
30 |
70 |
Floor 2 tank temperature setpoint (°C). |
|
P3_T_Tank_sp |
scalar |
30 |
70 |
Floor 3 tank temperature setpoint (°C). |
|
P4_T_Tank_sp |
scalar |
30 |
70 |
Floor 4 tank temperature setpoint (°C). |
|
Bd_Pw_Bat_sp |
scalar |
-1 |
1 |
Battery charging/discharging setpoint rate. |
|
Bd_Ch_EVBat_sp |
scalar |
0 |
1 |
EV battery charging setpoint rate. |
Simulation outputs¶
Variable Name |
Type |
Lower Bound |
Upper Bound |
# States |
Description |
|---|---|---|---|---|---|
Ext_T |
scalar |
-10 |
40 |
Outdoor temperature (°C). |
|
Ext_RH |
scalar |
0 |
100 |
Outdoor relative humidity (%RH). |
|
Ext_Irr |
scalar |
0 |
1000 |
Direct normal radiation (W/m2). |
|
Ext_P |
scalar |
80000 |
130000 |
Outdoor air pressure (Pa). |
|
Bd_Fl_HP |
scalar |
0 |
2 |
Heat pump flow rate (kg/s). |
|
Bd_T_HP_supply |
scalar |
35 |
55 |
Heat pump supply temperature (°C). |
|
Bd_T_HP_return |
scalar |
35 |
55 |
Heat pump return temperature (°C). |
|
Bd_T_HP_sp_out |
scalar |
35 |
55 |
Heat pump temperature setpoint (°C). |
|
P3_T_Thermostat_sp_out |
scalar |
16 |
26 |
Floor 3 thermostat setpoint (°C). |
|
P4_T_Thermostat_sp_out |
scalar |
16 |
26 |
Floor 4 thermostat setpoint (°C). |
|
P2_T_Thermostat_sp_out |
scalar |
16 |
26 |
Floor 2 thermostat setpoint (°C). |
|
P1_T_Thermostat_sp_out |
scalar |
16 |
26 |
Floor 1 thermostat setpoint (°C). |
|
P1_T_Tank_sp_out |
scalar |
30 |
70 |
Floor 1 temperature setpoint (°C). |
|
P2_T_Tank_sp_out |
scalar |
30 |
70 |
Floor 2 temperature setpoint (°C). |
|
P3_T_Tank_sp_out |
scalar |
30 |
70 |
Floor 3 temperature setpoint (°C). |
|
P4_T_Tank_sp_out |
scalar |
30 |
70 |
Floor 4 temperature setpoint (°C). |
|
Bd_Pw_Bat_sp_out |
scalar |
-1 |
1 |
Battery charging/discharging rate setpoint. |
|
Bd_Ch_EVBat_sp_out |
scalar |
0 |
1 |
EV battery charging rate setpoint . |
|
Bd_DisCh_EVBat |
scalar |
0 |
1 |
EV battery discharging rate. |
|
Bd_Frac_Vent_sp_out |
scalar |
0 |
1 |
Ventilation power fraction. |
|
Z01_E_Appl |
scalar |
0 |
1000 |
Zone 1 appliance energy (Wh). |
|
Z02_E_Appl |
scalar |
0 |
1000 |
Zone 2 appliance energy (Wh). |
|
Z03_E_Appl |
scalar |
0 |
1000 |
Zone 3 appliance energy (Wh). |
|
Z04_E_Appl |
scalar |
0 |
1000 |
Zone 4 appliance energy (Wh). |
|
Z05_E_Appl |
scalar |
0 |
1000 |
Zone 5 appliance energy (Wh). |
|
Z06_E_Appl |
scalar |
0 |
1000 |
Zone 6 appliance energy (Wh). |
|
Z07_E_Appl |
scalar |
0 |
1000 |
Zone 7 appliance energy (Wh). |
|
Z08_E_Appl |
scalar |
0 |
1000 |
Zone 8 appliance energy (Wh). |
|
P1_FlFrac_HW |
scalar |
0 |
1 |
Floor 1 hot water flow rate fraction. |
|
P2_FlFrac_HW |
scalar |
0 |
1 |
Floor 2 hot water flow rate fraction. |
|
P3_FlFrac_HW |
scalar |
0 |
1 |
Floor 3 hot water flow rate fraction. |
|
P4_FlFrac_HW |
scalar |
0 |
1 |
Floor 4 hot water flow rate fraction. |
|
Z01_T |
scalar |
10 |
40 |
Zone 1 temperature (°C). |
|
Z01_RH |
scalar |
0 |
100 |
Zone 1 relative humidity (%RH). |
|
Z02_T |
scalar |
10 |
40 |
Zone 2 temperature (°C). |
|
Z02_RH |
scalar |
0 |
100 |
Zone 2 relative humidity (%RH). |
|
Z03_T |
scalar |
10 |
40 |
Zone 3 temperature (°C). |
|
Z03_RH |
scalar |
0 |
100 |
Zone 3 relative humidity (%RH). |
|
Z04_T |
scalar |
10 |
40 |
Zone 4 temperature (°C). |
|
Z04_RH |
scalar |
0 |
100 |
Zone 4 relative humidity (%RH). |
|
Z05_T |
scalar |
10 |
40 |
Zone 5 temperature (°C). |
|
Z05_RH |
scalar |
0 |
100 |
Zone 5 relative humidity (%RH). |
|
Z06_T |
scalar |
10 |
40 |
Zone 6 temperature (°C). |
|
Z06_RH |
scalar |
0 |
100 |
Zone 6 relative humidity (%RH). |
|
Z07_T |
scalar |
10 |
40 |
Zone 7 temperature (°C). |
|
Z07_RH |
scalar |
0 |
100 |
Zone 7 relative humidity (%RH). |
|
Z08_T |
scalar |
10 |
40 |
Zone 8 temperature (°C). |
|
Z08_RH |
scalar |
0 |
100 |
Zone 8 relative humidity (%RH). |
|
Fa_Stat_EV |
scalar |
0 |
1 |
EV status (availability) |
|
Fa_ECh_EVBat |
scalar |
0 |
4000.0 |
EV battery charging energy (Wh). |
|
Fa_EDCh_EVBat |
scalar |
0 |
4000.0 |
EV battery discharging energy (Wh). |
|
Fa_ECh_Bat |
scalar |
0 |
4000.0 |
Battery charging energy (Wh). |
|
Fa_EDCh_Bat |
scalar |
0 |
4000.0 |
Battery discharging energy (Wh). |
|
Bd_FracCh_EVBat |
scalar |
0 |
1 |
EV battery state of charge. |
|
Bd_FracCh_Bat |
scalar |
0 |
1 |
Battery state of charge. |
|
P4_T_Tank |
scalar |
30 |
70 |
Floor 4 tank temperature (°C). |
|
P2_T_Tank |
scalar |
30 |
70 |
Floor 2 tank temperature (°C). |
|
P1_T_Tank |
scalar |
30 |
70 |
Floor 1 tank temperature (°C). |
|
P3_T_Tank |
scalar |
30 |
70 |
Floor 3 tank temperature (°C). |
|
HVAC_Pw_HP |
scalar |
0 |
120000.0 |
Heat pump power (W) |
|
HVAC_onoff_HP |
scalar |
0 |
1 |
Heat pump on/off status. |
|
Bd_E_HW |
scalar |
-3000.0 |
3000.0 |
Hot water energy (Wh). |
|
Fa_Pw_All |
scalar |
0 |
30000.0 |
Total power consumption (W). |
|
Fa_Pw_Prod |
scalar |
0 |
10000.0 |
PV power production (W). |
|
Fa_E_self |
scalar |
-2000.0 |
2000.0 |
Self consumption energy (Wh). |
|
Fa_E_HVAC |
scalar |
0 |
2000.0 |
HVAC energy consumption (Wh). |
|
Fa_E_All |
scalar |
0 |
2000.0 |
Total energy consumption (Wh). |
|
Fa_E_Light |
scalar |
0 |
100 |
Lighting energy (Wh). |
|
Fa_E_Appl |
scalar |
0 |
500.0 |
Appliances energy (Wh). |
Weather files¶
The available weather files for this model have the following specifiers:
ESP_CT_Barcelona(Default)ESP_CT_Barcelona_ElPratAP1(Evaluation file)ESP_CT_Barcelona_ElPratAP2ESP_CT_Girona1ESP_CT_Girona2ESP_CT_Lleida1ESP_CT_Lleida2ESP_CT_MontsenyESP_CT_Reus1ESP_CT_Reus2ESP_CT_Sabadell1ESP_CT_Sabadell2ESP_CT_TalarESP_CT_Tortosa1ESP_CT_Tortosa2
Evaluation scenario¶
The evaluation scenario for the ApartmentsGrid-v0 model consists of a full year control with the objective of minimizing the grid exchange, while keeping the zone temperatures between 19 and 24°C. For this goal, the tracked KPIs are the average exchanged energy (absolute value of the difference of produced and consumed energy), and the average temperature deviation and total temperature violations with respect to the interval [19, 24].
Notebook example¶
Here is a notebook example: