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A bug report. Two or more SwimmingPool:Indoor objects do not work properly.

Let me explain using ExampleFIle: 5ZoneSwimmingPool.idf. Oroginally, the examle file has one SwimmingPool:Indoor object, so it works properly. When I added 4 SwimmingPool:Indoor objects (all 5 zones have SwimmingPool:Indoor objects), only "Test Pool5" met the pool setpoint temperature of 27ºC.

The order of the objects matter. When I changed the order as shown below, only "Test Pool" meets the pool setpoint temperature.

But the problem is more complicated. I explain using the revised example file with 2 SwimmingPool:Indoor objects just because 5 pools are too much to explain. The hot water plant loop is as shown below. When there are 2 SwimmingPool:Indoor objects,

• HW SUPPLY OUTLET NODE:System Node Temperature does not meet the Setpoint of 82ºC.
• HW SUPPLY OUTLET NODE:System Node Temperature and HW DEMAND INLET NODE:System Node Temperature are inconsistent.
• TEST POOL:Indoor Pool Inlet Water Temperature and POOL WATER INLET NODE:System Node Temperature are inconsistent.
• TEST POOL2:Indoor Pool Water Temperature meet the Setpoint of 27ºC even if TEST POOL2:Indoor Pool Inlet Water Temperature is lower thant 27ºC.

It's a mess. The bug extends beyond SwimmingPool:Indoor objects to the entire hot water loop, so that zones cannot meet the heating temperature setpoint.

The idf files are here (V22-2-0). You can reproduce the bug.

Personally, I have a few projects with multiple swimming pools, and I don't have time to wait for the future EnergyPlus version to fix the bug... Please let me know if anyone has been able to force multiple SwimmingPool:Indoor objects to work using EMS or other means.

A bug report. Two or more SwimmingPool:Indoor objects do not work properly.

Let me explain using ExampleFIle: 5ZoneSwimmingPool.idf. Oroginally, the examle file has one SwimmingPool:Indoor object, so it works properly. When I added 4 SwimmingPool:Indoor objects (all 5 zones have SwimmingPool:Indoor objects), only "Test Pool5" met the pool setpoint temperature of 27ºC.

The order of the objects matter. When I changed the order as shown below, only "Test Pool" meets the pool setpoint temperature.

But the problem is more complicated. I explain using the revised example file with 2 SwimmingPool:Indoor objects just because 5 pools are too much to explain. The hot water plant loop is as shown below. When there are 2 SwimmingPool:Indoor objects,

• HW SUPPLY OUTLET NODE:System Node Temperature does not meet the Setpoint of 82ºC.
• HW SUPPLY OUTLET NODE:System Node Temperature and HW DEMAND INLET NODE:System Node Temperature are inconsistent.
• TEST POOL:Indoor Pool Inlet Water Temperature and POOL WATER INLET NODE:System Node Temperature are inconsistent.
• TEST POOL2:Indoor Pool Water Temperature meet the Setpoint of 27ºC even if TEST POOL2:Indoor Pool Inlet Water Temperature is lower thant than 27ºC.

It's a mess. The bug extends beyond SwimmingPool:Indoor objects to the entire hot water loop, so that zones cannot meet the heating temperature setpoint.

The idf files are here (V22-2-0). You can reproduce the bug.

Personally, I have a few projects with multiple swimming pools, and I don't have time to wait for the future EnergyPlus version to fix the bug... Please let me know if anyone has been able to force multiple SwimmingPool:Indoor objects to work using EMS or other means.

A bug report. Two or more SwimmingPool:Indoor objects do not work properly.

Let me explain using ExampleFIle: 5ZoneSwimmingPool.idf. Oroginally, the examle file has one SwimmingPool:Indoor object, so it works properly. When I added 4 SwimmingPool:Indoor objects (all 5 zones have SwimmingPool:Indoor objects), only "Test Pool5" met the pool setpoint temperature of 27ºC.

The order of the objects matter. When I changed the order as shown below, only "Test Pool" meets met the pool setpoint temperature.

But the problem is more complicated. I explain using the revised example file with 2 SwimmingPool:Indoor objects just because 5 pools are too much to explain. The hot water plant loop is as shown below. When there are 2 SwimmingPool:Indoor objects,

• HW SUPPLY OUTLET NODE:System Node Temperature does not meet the Setpoint of 82ºC.
• HW SUPPLY OUTLET NODE:System Node Temperature and HW DEMAND INLET NODE:System Node Temperature are inconsistent.
• TEST POOL:Indoor Pool Inlet Water Temperature and POOL WATER INLET NODE:System Node Temperature are inconsistent.
• TEST POOL2:Indoor Pool Water Temperature meet the Setpoint of 27ºC even if TEST POOL2:Indoor Pool Inlet Water Temperature is lower than 27ºC.

It's a mess. The bug extends beyond SwimmingPool:Indoor objects to the entire hot water loop, so that zones cannot meet the heating temperature setpoint.

The idf files are here (V22-2-0). You can reproduce the bug.

Personally, I have a few projects with multiple swimming pools, and I don't have time to wait for the future EnergyPlus version to fix the bug... Please let me know if anyone has been able to force multiple SwimmingPool:Indoor objects to work using EMS or other means.

A bug report. Two or more SwimmingPool:Indoor objects do not work properly.

Let me explain using ExampleFIle: 5ZoneSwimmingPool.idf. Oroginally, the examle file has one SwimmingPool:Indoor object, so it works properly. When I added 4 SwimmingPool:Indoor objects (all 5 zones have SwimmingPool:Indoor objects), only "Test Pool5" met the pool setpoint temperature of 27ºC.

The order of the objects matter. When I changed the order as shown below, only "Test Pool" met the pool setpoint temperature.

But the problem is more complicated. I explain using the revised example file with 2 SwimmingPool:Indoor objects just because 5 pools are too much to explain. The hot water plant loop is as shown below. When there are 2 SwimmingPool:Indoor objects,

• HW SUPPLY OUTLET NODE:System Node Temperature does not meet the Setpoint of 82ºC.
• HW SUPPLY OUTLET NODE:System Node Temperature and HW DEMAND INLET NODE:System Node Temperature are inconsistent.
• TEST POOL:Indoor Pool Inlet Water Temperature and POOL WATER INLET NODE:System Node Temperature are inconsistent.
• TEST POOL2:Indoor Pool Water Temperature meet the Setpoint of 27ºC even if TEST POOL2:Indoor Pool Inlet Water Temperature is lower than 27ºC.

It's a mess. The bug extends beyond SwimmingPool:Indoor objects to the entire hot water loop, so that zones cannot meet the heating temperature setpoint.

The idf files are here (V22-2-0). You can reproduce the bug.

Personally, I have a few projects with multiple swimming pools, and I don't have time to wait for the future EnergyPlus version to fix the bug... Please let me know if anyone has been able to force multiple SwimmingPool:Indoor objects to work using EMS or other means.

A bug report. Two or more SwimmingPool:Indoor objects do not work properly.

Let me explain using ExampleFIle: 5ZoneSwimmingPool.idf. Oroginally, the examle file has one SwimmingPool:Indoor object, so it works properly. When I added 4 SwimmingPool:Indoor objects (all 5 zones have SwimmingPool:Indoor objects), only "Test Pool5" met the pool setpoint temperature of 27ºC.

The order of the objects matter. When I changed the order as shown below, only "Test Pool" met the pool setpoint temperature.

But the problem is more complicated. I explain using the revised example file with 2 SwimmingPool:Indoor objects just because 5 pools are too much to explain. The hot water plant loop is as shown below. When there are 2 SwimmingPool:Indoor objects,

• HW SUPPLY OUTLET NODE:System Node Temperature does not meet the Setpoint of 82ºC.
• HW SUPPLY OUTLET NODE:System Node Temperature and HW DEMAND INLET NODE:System Node Temperature are inconsistent.
• TEST POOL:Indoor Pool Inlet Water Temperature and POOL WATER INLET NODE:System Node Temperature are inconsistent.
• TEST POOL2:Indoor Pool Water Temperature meet the Setpoint of 27ºC even if TEST POOL2:Indoor Pool Inlet Water Temperature is lower than 27ºC.

It's a mess. The bug extends beyond SwimmingPool:Indoor objects to the entire hot water loop, so that zones cannot meet the heating temperature setpoint.

The idf files are here (V22-2-0). You can reproduce the bug.

Personally, I have a few projects with multiple swimming pools, and I don't have time to wait for the future EnergyPlus version to fix the bug... Please let me know if anyone has been able to force multiple SwimmingPool:Indoor objects to work using EMS or other means.