Reduced heat = reduced input power
Ha ha, in Germany there was a "clever" chap selling "heating bulbs" on eBay when they decided to ban/regulate the manufacture/selling of classic fillament light bulbs.
Vincent and Jer have a point. Unlike ASHRAE 90.1, the Uk NCM regulates the required lux so that energy savings is not achieved at the occupant's expence. That is why DesignBuilder input is two fold: zone lighting level (lux); specific zone lighting input power (W/100lux-m2)...which it converts to W for the idf, I believe.
ASHRAE 55 handles user comfort, just like ASHRAE 62.1 handles fresh air rates, but I believe 90.1 should require some sort of bare minimum from both other standards. It only goes halfway with forcing inclusion of setpoint not met hours and mechanical heating / cooling systems where non exist.
On 19.06.2014, at 19:52, "vincent lacour vlacour@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
Yes and in addition you would produce 40W heat instead of 8W. In the highly insulated project I am working on, this increased heat matters.Vincent
On Thu, Jun 19, 2014 at 7:50 PM, rahula7@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
It's ok to disagree. That's how we learn.
So, in your example, if you used 10 of your 1W LEDs in a daylight zone, you'd input 10W as your lighting power in the lights object, and if you used 10 INC 5W lamps, you'd input 50W. Everything else would stay the same.Rahul
__._,_.___
Posted by: "jeannieboef@xxxxxxxxx" <jeannieboef@xxxxxxxxx>
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.
__,_._,___