Exclusion-list methodology for weatherization program in the Pacific Northwest

Nero, A.V.; Turiel, Isaac; Fisk, W.J.; Cirman, J.R.; Traynor, Cath

doi:10.2172/6642066

Cited by 1 publication

(5 citation statements)

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“…Some homeowners ma,y be ceRs.id,ering the following twe alternativ:es: (1) tighten their house a,nd not utilize a he'a,t exchanger (Le .. , ac.cept any resul ting degrad'a,tion in ind.oor a,ir quality) or (2) We est ima ted tha t fi 1 ters wi 11 need periodic cleaning or replacement and that the core may also need periodic cleaning.…”

Section: Methodology For Cost/benefit Analysismentioning

confidence: 99%

“…12 A tracer gas (SF 6 ) was introduced into the multi-room test spaces and the SF 6 concentration was measured vs. time at a number of indoor locations as the ventilation air provided by the heat exchanger reduced the SF 6 concentration. The ventilation efficiency ~s defined here as the ratio of the average observed rate of change ~n · tracer gas concentration (at six indoor locations) to the rate of change 1.n concentration that would be, predicted if the heat exchanger supplied its rated amount of ventilation air, perfect mixing of indoor air existed, and no short circuiting or cross-stream leakag.e occurred between exhaust and supply air s'treams. The term short circuiting 1.S utilized to describe the entrainmen,t of air exiting from the exchanger at locations interior and ex,terior to the house into the corresponding airstreams entering the exchanger, and is a special case of poor mixing near the heat exchanger.…”

Section: B Infiltration Rate Reduction From Weatherizationmentioning

confidence: 99%

“…In a tightened house employing mechanical ventilation with heat recovery, four factors must be accounted for when calculating the ventilation heat load: (1) uncontrolled ventilation (e.g. infiltration) 1n…”

Section: Calculation Of Ventilation Energy Requirements For a Tighmentioning

confidence: 99%

“…This portion of the ventilation heat load is calculated using Eq. (1) with an air-exchange rate corresponding to the increase in air exchange rate provided by the heat exchanger. To account for preheating of the air by the heat exchanger, the result from Eq.…”

Section: Calculation Of Ventilation Energy Requirements For a Tighmentioning

confidence: 99%

“…To account for preheating of the air by the heat exchanger, the result from Eq. (1) is then mUltiplied by the factor (l-~) where ~ is the effectiveness of the heat exchanger.…”

Section: Calculation Of Ventilation Energy Requirements For a Tighmentioning

confidence: 99%

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Energy savings and cost-effectiveness of heat exchanger use as an indoor air quality mitigation measure in the BPA weatherization program

Turiel

Fisk

Seedall

1983

Energy

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The BonneviHe Power Administration· (BPA) has proposed a ten year program to encourage the weatherization of electrically heated homes in the Pacific Northwes:t,The purpose of this program is to reduce residential electrical energy demand for space heating. If al.r infiltration rates are reduced by employing house tight;ening me'asures, indoor al.r qua li ty mitigation me,a~ures may be required in resid.ences with significant sources of indoor air contaminants.The use of residential air-to-a,ir heat exchangers has been proposed as a possible s.tra.tegy to assure that indoor air quality is not substantially degraded by house tightening.We examine the energy impact and cos.t effectiveness of heat exchanger utilization in tightened homes in the BPA region. Significant energy savings are predicted i.f homes are tightened and heat exchangers are utilized.From the homeowner's perspective, the results of our economic analysis indicate that, at the relatively low residential electric rates l.n the BPA region, the use of heat exchangers in existing I homes that are tightened is not economically viable. On the other hand, from the utility perspective, it may be cost effective to use heat exchangers in the weatherization program if the marginal cost to the utility is compared with the cost of conserved energy.

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Section: Methodology For Cost/benefit Analysismentioning

confidence: 99%

Section: B Infiltration Rate Reduction From Weatherizationmentioning

confidence: 99%

Section: Calculation Of Ventilation Energy Requirements For a Tighmentioning

confidence: 99%

Section: Calculation Of Ventilation Energy Requirements For a Tighmentioning

confidence: 99%

“…To account for preheating of the air by the heat exchanger, the result from Eq. (1) is then mUltiplied by the factor (l-~) where ~ is the effectiveness of the heat exchanger.…”

Section: Calculation Of Ventilation Energy Requirements For a Tighmentioning

confidence: 99%

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