stdev-advancedenergy,anenergyefficiencyservicesfirm(存儲版)
【正文】 0 00 . 2 50 . 5 00 . 7 51 . 0 01000 1100 1200 1300 1400 1500T o t a l Co n d i t i o n e d A r e a1 . 522 . 5Intervention green, nonintervention red HVAC tonnage TONS TONS TONS Remote Temperature RH and Wood Moisture Sensors How the crawl spaces perform – RH 01020304050607080901001 /1 /0 4 3 /3 1 /0 4 6 /2 9 /0 4 9 /2 7 /0 4 1 2 /2 6 /0 4 3 /2 6 /0 5 6 /2 4 /0 5 9 /2 2 /0 5 1 2 /2 1 /0 5 3 /2 1 /0 6 6 /1 9 /0 6 9 /1 7 /0 6 1 2 /1 6 /0 6% Relative HumidityNo n inter v e nt ion Inter v e nt ionFixed crawl space installations Conclusions About RH Controlled Crawl ?Maintains RH below 70% the “mold suppressing” zone ?Demonstrates suppression of moisture load from soil and outdoor air ?Avoids issues mon to southeast wall vented crawls Moisture Mold, rot Transmission of mold to house 01020304050607080901001 /1 /0 4 3 /3 1 /0 4 6 /2 9 /0 4 9 /2 7 /0 4 1 2 /2 6 /0 4 3 /2 6 /0 5 6 /2 4 /0 5 9 /2 2 /0 5 1 2 /2 1 /0 5 3 /2 1 /0 6 6 /1 9 /0 6 9 /1 7 /0 6 1 2 /1 6 /0 6% Relative HumidityNo n inter v e nt ion Inter v e nt ionRH Results in Living Space Average house RH and Temperature a. DRY SEASON [DECEMBER 15 – MARCH 15] Status Mean Return Temp St Dev Return Temp Mean Return RH St Dev Return RH I N b. SPRING SHOULDER [MARCH 15 – MAY 15] Status Mean Return Temp St Dev Return Temp Mean Return RH St Dev Return RH I N c. WET SEASON [MAY 15 – OCTOBER 15] Status Mean Return Temp St Dev Return Temp Mean Return RH St Dev Return RH I N d. FALL SHOULDER [OCTOBER 15 – DECEMBER 15] Status Mean Return Temp St Dev Return Temp Mean Return RH St Dev Return RH I N Crawl space moisture connection to inside 203040506070801 /1 /0 4 3 /3 1 /0 4 6 /2 9 /0 4 9 /2 7 /0 4 1 2 /2 6 /0 4 3 /2 6 /0 5 6 /2 4 /0 5 9 /2 2 /0 5 1 2 /2 1 /0 5 3 /2 1 /0 6 6 /1 9 /0 6 9 /1 7 /0 6 1 2 /1 6 /0 6Dew Point Temp (176。F)No n inter v e nt ion Inter v e nt ion Outsi deDid we impact relative humidity? ?Crawl space RH stayed below 70% Expect mold suppression in crawl and reduced mold in house ?House RH was not reduced Closed crawl space + outdoor air doesn’t bring the living space to target RH Introducing outdoor air does not dry the house ?Closed crawl couples crawl RH to house ?Wallvented crawls remain coup
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