Download Airflow and Indoor Air Quality Models of DOE Reference by Lisa C Ng, Andrew K Persily, Steven J Emmerich PDF

By Lisa C Ng, Andrew K Persily, Steven J Emmerich

16 reference structures were outlined by way of the U.S. division of power, and created as EnergyPlus enter records, to be used in assessing new applied sciences and aiding the improvement of power codes in pursuing development power potency advancements. Infiltration premiums within the EnergyPlus versions of the reference constructions have been enter as consistent airflow premiums, and never calculated in accordance with tested development airflow thought. so that it will aid extra physically-based airflow calculations, in addition to indoor air caliber research, types of the sixteen reference structures have been created within the multizone airflow and contaminant shipping application CONTAM. a few extra inputs needed to be outlined for the CONTAM types, and adjustments within the inside zoning have been required, to extra realistically account for airflow. Annual airflow and contaminant simulations have been played in CONTAM for 6 of the structures. whereas the assumed infiltration premiums in EnergyPlus don't realistically mirror affects of climatic conditions, there are transparent relationships among the outdoors air swap charges calculated by way of CONTAM and climate. additionally, the envelope airtightness values assumed in both process are obvious to have a tremendous effect at the air switch charges. Contaminant analyses have been played for occupant-generated carbon dioxide, unstable natural compounds from indoor assets, outdoors particulate topic, and outdoors ozone. The airflow and contaminant calculation effects supply an invaluable baseline for next use of those versions to enquire techniques to construction air flow and different applied sciences which are meant to concurrently decrease construction power intake whereas preserving or enhancing indoor air caliber.

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The infiltration heating loads calculated using CONTAM are about two to nine times higher than the EnergyPlus (tight) results. ) results. ) results. ) results. ) results. Note that these loads only accounted for the heating and cooling of the infiltration air and do not include latent loads, system effects or internal loads. The infiltration cooling loads calculated using CONTAM were about three to 10 times higher than the EnergyPlus (tight) results. 4 GJ. ) results. ) results. ) results. ) results.

5 concentrations as shown in Table 8, but the differences are not exceptionally large. 5 is the outdoor air, and their indoor deposition rates are related to zone size. 5. 5 concentrations. 5. Table 8 also shows that the Hospital and Medium Office have the highest indoor VOC concentrations. Because the VOC sources are area-based, the primary factor in determining the indoor concentrations are the outdoor air intake rates per unit floor area. The Hopstial and Medicum Office have the lowest values of the outdoor air intake per floor area, leading to the highest VOC concentrations.

Max. 820 1683 5 98 1 68 34 1186 Daily peak contaminant concentrations Min. Max. 847 1363 1 89 1 60 22 306 Daily peak contaminant concentrations Min. Max. ” values only apply to the zones in each building for which contaminant concentrations are reported (see Table 7 for selected zones). 31 Figure 20 to Figure 25 show the average and peak CO2 concentrations for the six simulated buildings. The differences in these values among the selected zones reflect variations in occupant density and outdoor air intake per person.

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