Thanks for your reply. So do you mean
the air loop total cooling and heating energy is the thermal
energy and need to times the efficiency to yield electricity
consumption?
However, I further check another table in BUILDING ENERGY PERFORMANCE - ELECTRICITY
The annual sum is still different from the End Uses energy.
Also, if I want to get the monthly electricity consumption of each system (I have total of 5 systems), what type of output do I need?
Thanks again,
HJ
This is the BUILDING ENERGY PERFORMANCE - ELECTRICITY table, the value is similar to end uses energy but still a little different, especially for cooling electricity.
End Uses
Electricity (GJ)
All the data are from the HTML output file.
On 11/15/2012 12:22 PM, Richard Raustad wrote:
However, I further check another table in BUILDING ENERGY PERFORMANCE - ELECTRICITY
The annual sum is still different from the End Uses energy.
Also, if I want to get the monthly electricity consumption of each system (I have total of 5 systems), what type of output do I need?
Thanks again,
HJ
This is the BUILDING ENERGY PERFORMANCE - ELECTRICITY table, the value is similar to end uses energy but still a little different, especially for cooling electricity.
| FANS:ELECTRICITY [J] | PUMPS:ELECTRICITY [J] | HEATING:ELECTRICITY [J] | COOLING:ELECTRICITY [J] | |
| January | 2.01E+09 | 0.01 | 2.79E+09 | 1.50E+08 |
| February | 1.81E+09 | 0.01 | 2.27E+09 | 2.05E+08 |
| March | 2.19E+09 | 0.01 | 2.10E+09 | 3.53E+08 |
| April | 1.90E+09 | 0.01 | 9.43E+08 | 6.24E+08 |
| May | 2.09E+09 | 0.01 | 2.16E+08 | 1.59E+09 |
| June | 2.09E+09 | 0.01 | 0 | 2.78E+09 |
| July | 1.90E+09 | 0.01 | 0 | 3.32E+09 |
| August | 2.19E+09 | 0.01 | 0 | 3.42E+09 |
| September | 1.90E+09 | 0.01 | 0 | 2.42E+09 |
| October | 2.00E+09 | 0.01 | 7.76E+08 | 1.03E+09 |
| November | 2.00E+09 | 0.01 | 2.03E+09 | 4.67E+08 |
| December | 1.90E+09 | 0.01 | 2.82E+09 | 1.34E+08 |
| Annual Sum or Average | 2.40E+10 | 0.07 | 1.40E+10 | 1.65E+10 |
End Uses
Electricity (GJ)
| Heating | 13.75 |
| Cooling | 10.29 |
| Fans |
23.84 |
All the data are from the HTML output file.
On 11/15/2012 12:22 PM, Richard Raustad wrote:
Are you confusing electric energy and thermal energy reports?
On 11/15/2012 12:17 PM, HJ wrote:
Hi all,
I am quite confused about the output tabular results from E+. I used a PNNL typical small office file to simulate and when I look into the HTML output file, the total cooling energy in the End Uses part, is
Electricity Gas
Heating 13.75
2.38 Cooling 10.29 0.00
Fans
23.84 0.00
But for the OVERALL HVAC AIR SYSTEM LOADS of each system
AIR LOOP TOTAL HEATING ENERGY [GJ] AIR LOOP TOTAL COOLING ENERGY [GJ]
6.53E+00 6.20E+00 System 1 5.60E+00 7.50E+00 System 2 5.59E+00 6.31E+00 System 3 7.96E+00 9.04E+00 System 4 4.37E+00 1.14E+01 System 5 3.00E+01 4.05E+01 Total
And for OVERALL HVAC SYSTEM ENERGY
I believe for the cooling part, the airloop total heating+cooling = 70 GJ should be equal to the End Uses: cooling + heating+fan - service water heating energy= somewhere around 40 GJ and should be equal to overall HVAC system energy=47.9 GJ
ELECTRICITY:HVAC [GJ] 4.79E+01
But apparently they are all different than my expectation. So can anyone tell me what are the differences between those values?
And if I want the monthly electricity consumption for cooling, what value should I choose?
The HVAC systems are
Heating type Air-source heat pump with gas furnace as back up Cooling type Air-source heat pump Distribution and terminal units Single zone, constant air volume air distribution, one unit per occupied thermal zone
Many thanks,
HJ
-- Richard A. Raustad Senior Research Engineer Florida Solar Energy Center University of Central Florida 1679 Clearlake Road Cocoa, FL 32922-5703 Phone: (321) 638-1454 Fax: (321) 638-1439 or 1010 Visit our web site at: http://www.fsec.ucf.edu UCF - From Promise to Prominence: Celebrating 40 Years
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