Description

To support the ASHRAE Building Energy Quotient (bEQ) rating program, ASHRAE TRP-1771 proposed a methodology to reconcile thedifferences between the empirical and modeled baselines of existing and new US commercial buildings. As a part of this research, this paper details andapplies a new methodology to systematically identify sensitive inputs of building energy models. First, the methodology is introduced to identify possiblysensitive model inputs, determine the uncertainties of these inputs, and conduct sensitivity analysis to select sensitive model inputs. Then, to demonstrate anapplication of the methodology, we evaluate the sensitivity of energy model inputs for medium office buildings. We develop 30 prototypical building modelsthat represent pre-1980 and post-1980 medium offices in the 15 ASHRAE climate zones. Fourteen model inputs, which are identified as beingpotentially sensitive, are selected for each prototypical building model. Sensitivity analyses are performed as described in the methodology. The resultsindicate that the lighting power density and plug load density are the two most sensitive model inputs. Meanwhile, the envelope is more sensitive in coldclimates than in hot climates, and shading devices are more effective in hot climates.

Citation: 2019 Annual Conference, Kansas City, MO, Extended Abstracts

Product Details

Published:

2019

Number of Pages:

4

Units of Measure:

Dual

File Size:

1 file , 640 KB

Product Code(s):

D-KC-19-A020