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Calling heat from storage heater outside recharging hours

asked 2014-11-17 11:14:24 -0500

updated 2015-07-26 19:10:09 -0500

Is it possible to set a schedule for just the heating element of a water heater (WaterHeater:Mixed or WaterHeater:HeatPump), while allowing the tank to discharge at any time? Modelling this using PlantEquipmentOperationSchemes makes the tank unavailable to meet the load so is there another way?

What I'm trying to do is model a residential Economy7 storage system which charges up at night and then provides heat throughout the day. I've had a look through the example files and can't see any that fit the bill. I think I must be missing something obvious as this seems like it would be a common requirement. How do people normally model a storage heater if not as I've been trying?

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answered 2014-11-17 11:52:42 -0500

Archmage's avatar

The water heater's setpoint schedule can be varied over the day. Turn the tank way down during times you don't want it to heat and then back up to normal setpoint value during the night.

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Thanks, that seems to be doing the trick.

Jamie Bull's avatar Jamie Bull  ( 2014-11-17 12:10:07 -0500 )edit

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Asked: 2014-11-17 11:14:24 -0500

Seen: 141 times

Last updated: Nov 17 '14