If you are designing a system for China, why bother about ASHRAE 90.1 baseline.
Design an energy saving building using EPlus and set your own standard and baseline.
It is ridiculous to make a city in China look like New York and then talk about energy saving, traffic problems, etc.
VAV requires a control for each room. Reheat is not necessary in most buildings. The mercury switch thermostat does not consume any power. The programmable thermostat and controller all consumes power even when the HVAC is not on.
Simple energy saving programming can use a couple of mercury switch thermostat and a mechanical timer (7 day clock.). The combination is again does not require any electric power.
There are many energy saving and environment friendly solutions.
In a cold country, some heating is required in Winter to prevent water pipe, etc from freezing. These pipe when empty will not freeze. Electric heating of unconditioned space is, I think, for these consideration.
There is a by-law in Canada that the building must be maintained above 10°C in Winter. A house must not be left un-attended for more than 72 hours. Otherwise, any water damage will not be covered by insurance.
The safety regulation is important. The comfort guidelines may be ignored.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: xing.shi.2006@xxxxxxxxx
Date: Sun, 7 Aug 2011 08:36:05 +0000
Subject: [EnergyPlus_Support] Baseline and proposed heating in EnergyPlus
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Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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Design an energy saving building using EPlus and set your own standard and baseline.
It is ridiculous to make a city in China look like New York and then talk about energy saving, traffic problems, etc.
VAV requires a control for each room. Reheat is not necessary in most buildings. The mercury switch thermostat does not consume any power. The programmable thermostat and controller all consumes power even when the HVAC is not on.
Simple energy saving programming can use a couple of mercury switch thermostat and a mechanical timer (7 day clock.). The combination is again does not require any electric power.
There are many energy saving and environment friendly solutions.
In a cold country, some heating is required in Winter to prevent water pipe, etc from freezing. These pipe when empty will not freeze. Electric heating of unconditioned space is, I think, for these consideration.
There is a by-law in Canada that the building must be maintained above 10°C in Winter. A house must not be left un-attended for more than 72 hours. Otherwise, any water damage will not be covered by insurance.
The safety regulation is important. The comfort guidelines may be ignored.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: xing.shi.2006@xxxxxxxxx
Date: Sun, 7 Aug 2011 08:36:05 +0000
Subject: [EnergyPlus_Support] Baseline and proposed heating in EnergyPlus
This question is really about ASHRAE 90.1. However, since we are using EnergyPlus to simulate the building, we hope that it can be answered here.
The simulated building has five stories. The design (proposed model) only has heating (by a ground source heat pump) for the 5th floor, which is an office space. The bottom 4 floors have no heating in the design.
According to Table G3.1 in Appendix G of ASHRAE 90.1-2007:
Where no heating system exists or no heating system has been specified, the heating system classification shall be assumed to be electric, and the system characteristics shall be identical to the system modeled in the baseline building design.
Our baseline model is ASHRAE system 8 (VAV + PFP boxes, heating provided by electric). Does this mean that our proposed model has to add electric heating into the EnergyPlus model despite the fact that the acutal design does not have heating?
Thanks!
The simulated building has five stories. The design (proposed model) only has heating (by a ground source heat pump) for the 5th floor, which is an office space. The bottom 4 floors have no heating in the design.
According to Table G3.1 in Appendix G of ASHRAE 90.1-2007:
Where no heating system exists or no heating system has been specified, the heating system classification shall be assumed to be electric, and the system characteristics shall be identical to the system modeled in the baseline building design.
Our baseline model is ASHRAE system 8 (VAV + PFP boxes, heating provided by electric). Does this mean that our proposed model has to add electric heating into the EnergyPlus model despite the fact that the acutal design does not have heating?
Thanks!
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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