 | 1 | initial version |
I have two WaterHeater:Mixed objects in parallel, one with a setpoint of 50 C and one with a setpoint of 80 C. This is the order they are listed in the EquipmentList so the one with a lower setpoint is drawn on first.
The question is why is the second tank not drawn from when the first tank can't meet the load?
| | 2 | No.2 Revision |
I have two WaterHeater:Mixed objects in parallel, one with a setpoint of 50 C (Water Heater) and one with a setpoint of 80 C. C (PCM tank). This is the order they are listed in the EquipmentList so the one with a lower setpoint is drawn on first.
The question is why is the second tank not drawn from when the first tank can't meet the load?
| | 3 | No.3 Revision |
I have two WaterHeater:Mixed objects in parallel, one with a setpoint of 50 C (Water Heater) and one with a setpoint of 80 C (PCM tank). This is the order they are listed in the EquipmentList so the one with a lower setpoint is drawn on first.
The question is why is the second tank not drawn from when the first tank can't meet the load?
This is the HVAC section of the IDF. Apparently we can't upload IDF files so rename it to PCM HVAC sample.idf to open. C:\fakepath\PCM HVAC sample.jpg
| | 4 | No.4 Revision |
I have two WaterHeater:Mixed objects in parallel, one with a setpoint of 50 C (Water Heater) and one with a setpoint of 80 C (PCM tank). This is the order they are listed in the EquipmentList so the one with a lower setpoint is drawn on first.
The question is why is the second tank not drawn from when the first tank can't meet the load?
This is the HVAC section of the IDF. Apparently we can't upload IDF files so rename it to PCM HVAC sample.idf to open. C:\fakepath\PCM HVAC sample.jpg
| | 5 | No.5 Revision |
I have two WaterHeater:Mixed objects in parallel, one with a setpoint of 50 C (Water Heater) and one with a setpoint of 80 C 75 C (PCM tank). This is the order they are listed in the EquipmentList so the one with a lower setpoint is drawn on first.
The question is why is the second tank not drawn from when the first tank can't meet the load?
| | 6 | No.6 Revision |
I have two WaterHeater:Mixed objects in parallel, one with a setpoint of 50 C (Water Heater) and one with a setpoint of 80 C 75 C (PCM tank). This is the order they are listed in the EquipmentList so the one with a lower setpoint is drawn on first.
The question is why is the second tank not drawn from when the first tank can't meet the load?
Edited to add section of IDF
PlantLoop,
Secondary HW Loop, ! - Name of loop
Water, ! - Fluid type
, ! - User-defined fluid type
Secondary HW Loop Operation, ! - Plant equipment operation scheme
Secondary HW Loop Supply Side Outlet, ! - Loop temperature setpoint node
80.00, ! - Maximum loop temperature (C)
0.00, ! - Minimum loop temperature (C)
autosize, ! - Maximum loop flow rate (m3/s)
0.000000, ! - Minimum loop flow rate (m3/s)
autocalculate, ! - Volume of the plant loop (m3)
Secondary HW Loop Supply Side Inlet, ! - Plant side inlet node
Secondary HW Loop Supply Side Outlet, ! - Plant side outlet node
Secondary HW Loop Supply Side Branches, ! - Plant side branch list name
Secondary HW Loop Supply Side Connectors, ! - Plant side connector list name
Secondary HW Loop Demand Side Inlet, ! - Demand side inlet node
Secondary HW Loop Demand Side Outlet, ! - Demand side outlet node
Secondary HW Loop Demand Side Branches, ! - Demand side branch list name
Secondary HW Loop Demand Side Connectors, ! - Demand side connector list name
Uniform, ! - Load distribution scheme
Secondary HW Loop AvailabilityManager List, ! - Availability manager list name
SingleSetpoint, ! - Plant loop demand calculation scheme
None, ! - Common pipe simulation
None; ! - Pressure simulation type
PlantEquipmentOperationSchemes,
Secondary HW Loop Operation, ! - Name of plant/condenser equipment operation scheme
PlantEquipmentOperation:HeatingLoad, ! - Control scheme object type 1
Secondary HW Loop Scheme 1, ! - Name of control scheme 1
On; ! - Control scheme schedule 1
PlantEquipmentOperation:HeatingLoad,
Secondary HW Loop Scheme 1, ! - Name of control scheme
0.00, ! - Range lower limit 1
1000000000000000.00, ! - Range upper limit 1
Secondary HW Loop Scheme 1 Range 1 Equipment List; ! - Range equipment list name 1
PlantEquipmentList,
Secondary HW Loop Scheme 1 Range 1 Equipment List, ! - Range equipment list name 0
WaterHeater:Mixed, ! - Equipment 1 object type
Water Heater, ! - Equipment 1 name
WaterHeater:Mixed, ! - Equipment 1 object type
PCM Tank; ! - Equipment 1 name
| | 7 | retagged |
I have two WaterHeater:Mixed objects in parallel, one with a setpoint of 50 C (Water Heater) and one with a setpoint of 80 C 75 C (PCM tank). This is the order they are listed in the EquipmentList so the one with a lower setpoint is drawn on first.
The question is why is the second tank not drawn from when the first tank can't meet the load?
Edited to add section of IDF
PlantLoop,
Secondary HW Loop, ! - Name of loop
Water, ! - Fluid type
, ! - User-defined fluid type
Secondary HW Loop Operation, ! - Plant equipment operation scheme
Secondary HW Loop Supply Side Outlet, ! - Loop temperature setpoint node
80.00, ! - Maximum loop temperature (C)
0.00, ! - Minimum loop temperature (C)
autosize, ! - Maximum loop flow rate (m3/s)
0.000000, ! - Minimum loop flow rate (m3/s)
autocalculate, ! - Volume of the plant loop (m3)
Secondary HW Loop Supply Side Inlet, ! - Plant side inlet node
Secondary HW Loop Supply Side Outlet, ! - Plant side outlet node
Secondary HW Loop Supply Side Branches, ! - Plant side branch list name
Secondary HW Loop Supply Side Connectors, ! - Plant side connector list name
Secondary HW Loop Demand Side Inlet, ! - Demand side inlet node
Secondary HW Loop Demand Side Outlet, ! - Demand side outlet node
Secondary HW Loop Demand Side Branches, ! - Demand side branch list name
Secondary HW Loop Demand Side Connectors, ! - Demand side connector list name
Uniform, ! - Load distribution scheme
Secondary HW Loop AvailabilityManager List, ! - Availability manager list name
SingleSetpoint, ! - Plant loop demand calculation scheme
None, ! - Common pipe simulation
None; ! - Pressure simulation type
PlantEquipmentOperationSchemes,
Secondary HW Loop Operation, ! - Name of plant/condenser equipment operation scheme
PlantEquipmentOperation:HeatingLoad, ! - Control scheme object type 1
Secondary HW Loop Scheme 1, ! - Name of control scheme 1
On; ! - Control scheme schedule 1
PlantEquipmentOperation:HeatingLoad,
Secondary HW Loop Scheme 1, ! - Name of control scheme
0.00, ! - Range lower limit 1
1000000000000000.00, ! - Range upper limit 1
Secondary HW Loop Scheme 1 Range 1 Equipment List; ! - Range equipment list name 1
PlantEquipmentList,
Secondary HW Loop Scheme 1 Range 1 Equipment List, ! - Range equipment list name 0
WaterHeater:Mixed, ! - Equipment 1 object type
Water Heater, ! - Equipment 1 name
WaterHeater:Mixed, ! - Equipment 1 object type
PCM Tank; ! - Equipment 1 name
