RE: [EnergyPlus_Support] How can a desuperheater be placed upstream of a boiler-heated domestic water heater?

To: EnergyPlus_Support <energyplus_support@xxxxxxxxxxxxxxx>

Subject: RE: [EnergyPlus_Support] How can a desuperheater be placed upstream of a boiler-heated domestic water heater?

From: YuanLu Li <yli006@xxxxxxxxxxx>

Date: Wed, 2 May 2012 14:15:57 -0400

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Is not this the same as the solar collector example?

"hot refrigerant gas" is the solar collector, boiler is the electric heater heating the instantanous tank.

City water in, DHW out to the showers, etc. There is a tempering tap for the city water and the tank DHW as well in the example.

Dr. Li

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Wed, 2 May 2012 13:56:30 -0400
Subject: [EnergyPlus_Support] How can a desuperheater be placed upstream of a boiler-heated domestic water heater?

Dear E+ Forum,

I?ve tried several ways to make an equivalent to the sketch below ? and failed.

The designed system uses hot refrigerant gas to pre-heat city water, then goes to a water heater for any additional heating. Think of it as:

· Stage 1 heating: Desuperheater

· Stage 2 heating: Boiler

Have you any ideas for making this work? Thanks in advance.

p.s., One of the configurations I tried placed a WaterHeater:Mixed in a branch of the boiler demand loop. E+ doesn?t think that is acceptable, so it crashed.

Description: BPT BizCard JVDII Updated

Making me think?.

Seek truth while you are young, for if you do not, it will later escape your grasp

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