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Characterization of Household Residential Energy Consumption Using a Housing Unit Archetype Framework. Steve White Lloyd Potter Jeffrey Jordan Lila Valencia Carlos Valenzuela. Introduction.

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Characterization of Household Residential Energy Consumption Using a Housing Unit Archetype Framework

Steve White

Lloyd Potter

Jeffrey Jordan

Lila Valencia

Carlos Valenzuela


Introduction
Introduction Using a Housing Unit Archetype Framework

  • Understanding the energy efficiency of housing units is important for targeting conservation efforts.

  • Type of construction, age, and size of a housing unit are expected to result in variation in household energy consumption patterns.


Method
Method Using a Housing Unit Archetype Framework

  • County tax appraisal district data (housing unit characteristics) and local energy company data (source KBTUs in gas and electricity consumption for each unit in 2010) are used.

  • Analysis restricted to dwellings occupied over the year. Housing units are distributed into a 100 cell grid (Table 1) based on vintage (year built) and size (square feet of living area).


Consumption efficiency
Consumption efficiency Using a Housing Unit Archetype Framework

  • Examined as follows :

  • The median source KBTUs for each of the 100 Vintage by Size categories were calculated.

  • SKBTU's for the 100 were ranked from highest to lowest.

  • Consumption categories were assigned as follows:

  • Tier 1 - Rank = 1-25: Lowest Efficiency

  • Tier 2 - Rank = 26-50: Moderate-Low Efficiency

  • Tier 3 – Rank = 51-75: Moderate-High Efficiency

  • Tier 4 – Rank = 76-100: Highest Efficiency


Housing Unit Examples Using a Housing Unit Archetype Framework

2

1977

1,384

1

1932

942

4

2008

3,117

3

1985

1675


Refinement of other characteristics
Refinement of Other Characteristics Using a Housing Unit Archetype Framework.

  • The archetype grid can be further refined to include details. Using foundation types:

  • Pier and beam is less efficient across all tiers.

  • Pier and beam housing units have lower improvement values across all tiers.

  • In the first three tiers, based on median year built, pier and beam housing units are 23 or more years older than slab housing units.

  • In tier 4, housing units (built between 1987 and 2010), pier and beam is almost non-existent.


Refinement of tiers
Refinement of Tiers Using a Housing Unit Archetype Framework

Subdivision of the four tiers based on additional vintage, size, and consumption details. Original four tiers subdivided into 16 archetypes based on:

  • Reducing the number and narrowing the range for vintages.

  • Deriving 'Small' and 'Large' size categories within each new vintage category.

  • Deriving 'High' and 'Low' SKBTU consumption categories by size and by vintage


Conclusion
Conclusion Using a Housing Unit Archetype Framework

  • Older, smaller houses are less energy efficient.

  • An archetype framework has significant potential for targeting housing units with specific conservation efforts.


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