Regional Technical Forum October 9, 2007 Portland Oregon

Regional Technical ForumOctober 9, 2007Portland Oregon

Random Home Study Details

• Field study on manufactured homes built to current Energy Star specifications

• Work will be carried out on at least 114 units• Sample size being dictated by the expected coefficient of

variation in the key measurements (e.g. duct tightness and envelop air tightness).

• Sampling provides adequate state-by-state samples in the states of this region.

• 38 sites for Oregon, and 43 sites for Washington, and approximately 35 sites in Idaho and western Montana.

Specific field activities:

• Measure tightness of building shell and duct system• Measure airflow and static pressure in the HVAC system

in order to calculate supply leakage fraction (which has direct bearing on overall heating system delivery efficiency)

• Measure flow rate through whole-house exhaust fan• Evaluate compliance of home set-up with statewide set-up

rules• Record other key data which have a bearing on home

performance and occupant health/safety (such as whole house fan run-time, house size, auxiliary fuels, etc)

• Datalog lighting, hot water and heating loads

Exterior Duct Leakage (Previously Reported)

Group SGC Mfd homesbuilt 2001-02

Medians (avgs)

SGC Mfd homes built 1997-98

Medians (avgs)

MAP 1992-93

(avgs except for triples)

Leakage @ 25 Pa

(ft3/min)

Leakage@ 50 Pa

(ft3/min)

Leakage @ 25 Pa

(ft3/min)

Leakage @ 50 Pa

(ft3/min)

Leakage @ 25 Pa

(ft3/min)

Leakage @ 50 Pa

(ft3/min)

All cases 131 (139)n=94

192 (209) 103 (151)n=47

159 (231) (104) (157)

Double section home 119 (132)n=69

180 (199) 97 (157)n=34

157 (240) (101) n=124 (155)

Triple section home 176 (174)n=22

259 (265) 144 (134)n=13

223 (210) 122n=11

169

Idaho 127 (151)n=20

187 (229) 106 (165)n=24

168 (254) - -

Oregon 135 (134)n=37

200 (198) NA NA - -

Washington 115 (132)n=39

179 (202) 103 (135)n=25

159 (208) - -

In-plant trainingfor Duct testing

Supplemental Lighting Study

• Manufactured home have separate lighting circuits

• Simple integrating CTs could provide lighting sub metering

• Lighting audit would provide LPD for home• Analysis would derive the average lighting

runtime for the metered period.• No lighting loggers required!

Proposed Funding

• ODOE contribution (USDOE BAIHP) - Committed 35880• Fees from manufacturers & SEO inkind - Committed 25000• Northwest Energy Efficiency Alliance (amount requested) 25000• Regional technical Forum (amount requested) 10000• Bonneville Power (amount requested) 40000

• IOU utility 5K each (amount requested) 15000

Total 150,880

Supplemental Funding needed (not in the above budget)

• Lighting monitoring and audit:– Equipment: 50 homes 25000

– Audits, placement 10000

– Analysis15000

• DHW review (sub-metered) 20000

• Mini-Split review 5000

Total supplemental 75000