The Thermal and Rainwater Runoff Performance of an Extensive ...

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7.16 NI DAQmx and Labview Signal ExpressNI DAQmx and Labview Signal Express software were installed prior to the connection ofNI devices 9211 and 6008.Once the NI devices were connected to the laptop via USB, the data acquisition system wasready for testing and running/recording results.7.161 Data Acquisition MethodThe following procedure was followed in Labview Signal Express:‣ Add Step‣ Acquire Signals‣ DAQmx Acquire‣ Analog InputFor the first step, temperature was selected for thermocouple measurements and for thesecond step; voltage was selected for relative humidity measurements.7.162 Thermocouple StepFigure 35 shows the thermocouple setup for the NI USB-9211 device.Niall Carroll Page 54The Thermal and Rainwater Runoff Performance of an Extensive Green Roof System
Figure 35: Labview Signal Express Thermocouple Setup‘Continuous Sampling’ was selected and the ‘Rate’ was set to 0.01 Hz. Labview SignalExpress recommended setting ‘Samples to Read’ to 1000.Advanced Timing required that the ‘Timeout’ between readings be adjusted according to thefollowing equation:(1)Type K thermocouples were selected and degrees Celsius were chosen as the selected units.Niall Carroll Page 55The Thermal and Rainwater Runoff Performance of an Extensive Green Roof System
Page 1 and 2:
Department of Mechanical Engineerin
Page 3 and 4: AbstractThis project addresses the
Page 5 and 6: Table of Contents1 Introduction…
Page 7 and 8: 6.2.1 Rainfall Runoff Relationship
Page 9 and 10: List of FiguresFigure 1: Traditiona
Page 11 and 12: Figure 32: Humidity Sensor Located
Page 13 and 14: 1 Introduction1.1 Green Roof Defini
Page 15 and 16: incorporate green roofs into their
Page 17 and 18: 2.3 ExtensiveFigure 5: Extensive Gr
Page 19 and 20: 2.33 Green/Brown Roofs for Biodiver
Page 21 and 22: 3 Construction of Green RoofsThe co
Page 23 and 24: 3.2 Inverted Warm Green Roof Constr
Page 25 and 26: Although less versatile than intens
Page 27 and 28: There are four main methods of esta
Page 29 and 30: • extension of park system• pro
Page 31 and 32: In summer, green roofs can retain 7
Page 33 and 34: The urban heat island effect descri
Page 35 and 36: 4.6 Building FabricWhen vegetation
Page 37 and 38: 5 UK Policy on Green RoofsThere are
Page 39 and 40: Figure 16: Summer Temperatures of R
Page 41 and 42: However, the previous study mention
Page 43 and 44: Similarly, Simmons et al. [41] foun
Page 45 and 46: Figure 20: Green Roof Test Rig for
Page 47 and 48: The mineral content of the substrat
Page 49 and 50: Figure 25: NI USB-9211 Thermocouple
Page 51 and 52: It was used to acquire the relative
Page 53: Figure 33: NI USB-6008 Terminal Ass
Page 57 and 58: 7.2 Green Roof Energy BalanceThe gr
Page 59 and 60: (4)Where,α s = Shortwave Absorptiv
Page 61 and 62: A green roof test rig was set up to
Page 63 and 64: Figure 40: Green Roof Test Rig for
Page 65 and 66: second day of the experiment. The l
Page 67 and 68: with the artificial rain event. Whe
Page 69 and 70: References1. Sailor D.J. ‘A Green
Page 71 and 72: 31. Mellor, R.S. Salisbury, F.B. Ra
Page 73 and 74: Appendix 1Niall Carroll Page 73The
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