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VAB Temperature and Humidity Study
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Author and Affiliation:
Lane, John E.(Enterprise Advisory Services, Inc., Houston, TX, United States);
Youngquist, Robert C.(NASA Kennedy Space Center, Cocoa Beach, FL United States);
Muktarian, Edward(Stinger Ghaffarian Technologies, Inc. (SGT, Inc.), Kennedy Space Center, FL, United States);
Nurge, Mark A.(NASA Kennedy Space Center, Cocoa Beach, FL United States)
Abstract: In 2012, 17 data loggers were placed in the VAB to measure temperature and humidity at 10-minute intervals over a one-year period. In 2013, the data loggers were replaced with an upgraded model and slight adjustments to their locations were made to reduce direct solar heating effects. The data acquired by the data loggers was compared to temperature data provided by three wind towers located around the building. It was found that the VAB acts as a large thermal filter, delaying and reducing the thermal oscillations occurring outside of the building. This filtering is typically more pronounced at higher locations in the building, probably because these locations have less thermal connection with the outside. We surmise that the lower elevations respond more to outside temperature variations because of air flow through the doors. Temperatures inside the VAB rarely exceed outdoor temperatures, only doing so when measurements are made directly on a surface with connection to the outside (such as a door or wall) or when solar radiation falls directly on the sensor. A thermal model is presented to yield approximate filter response times for various locations in the building. Appendix A contains historical thermal and humidity data from 1994 to 2009.
Publication Date: Apr 01, 2014
Document ID:
20140008684
(Acquired Jul 17, 2014)
Subject Category: ENGINEERING (GENERAL); GROUND SUPPORT SYSTEMS AND FACILITIES (SPACE)
Report/Patent Number: NASA/TM-2014-218335, KSC-E-DAA-TN14804
Document Type: Technical Report
Contract/Grant/Task Num: NNK11EA08C; WBS 824475.20.01.01.11
Financial Sponsor: NASA Kennedy Space Center; Cocoa Beach, FL United States
Organization Source: NASA Kennedy Space Center; Cocoa Beach, FL United States
Description: 91p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: BUILDINGS; HUMIDITY; TEMPERATURE EFFECTS; AIR FLOW; SOLAR HEATING; OSCILLATIONS; TOWERS; WALLS
Other Descriptors: TEMPERATURE; HUMIDITY; THERMAL MODELING
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