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Title:

Blackstone Building 10B

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Isaac Ochieng Greg VanLear. Overview. Goals. Building 10b Setup. Project Status ... based on indoor/outdoor conditions: 66 F. RH 50% Any. Dehumidify. 72 F. RH ... – PowerPoint PPT presentation

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Title: Blackstone Building 10B


1
Blackstone Building 10B
  • Jarred Brown Crystal Schuil
  • Michael Drewniak Tom Sze
  • Isaac Ochieng Greg VanLear

2
Overview
  • Goals
  • Building 10b Setup
  • Project Status
  • Insolation and Humidity
  • Modeling
  • HOBO Analysis

3
Goal
  • Can it handle the coldest and hottest days?
  • Design an operation model
  • The HVAC system
  • The AHU (Air handling unit)
  • Space and Time dependent
  • Approach
  • Entire building
  • Different aspects
  • Different floors
  • Compare with the BAS control algorithm

4
Priority
  • Comfort
  • Temperature
  • Humidity
  • Luminosity
  • Fresh Air
  • Cost
  • …

5
Blackstone Grounds
Building 10B
6
Basement and First Floor
Loading Dock
Stockroom
Stockroom
Non- insulated Stair
7
Second and Third Floors
Open Stair
Open Offices
Open Offices
Multipurpose Room
8
Fourth Floor
  • Includes
  • Large skylight
  • Open stair to third floor

Open Offices
Multipurpose Room
9
Time Dependent Insolation Data
10
Power from Solar Insolation
  • Includes S-W-E Walls and Roof
  • Brick Absorptivity 0.7
  • Window Absorptivity 0.5
  • 1/3 Surface Area
  • White painted roof Absorptivity 0.2
  • Sources
  • http//www.bia.org/html/frmset_thnt.htm
  • http//www.stevensroofing.com/Energy/Energy_ASHRAE
    .htm

11
Power from Solar Insolation
  • January
  • Coldest month
  • Total Power _at_ 8 am 36278 W
  • July
  • Hottest month
  • Total Power _at_ 8 am 70118 W

12
Dehumidification
  • Each person requires about 10 W of power to
    dehumidify the air they exhale
  • 6 L/min
  • 12 0C dew point
  • 37 0C exhalation
  • Completely humidified air exhaled

13
Dehumidification
  • 5000 cfm air inlet
  • Assume very bad day 98.0o F, 100 humidity
  • 12.0C dew point
  • 230 kW to dehumidify intake air
  • Drops to 100 kW for 80.0 oF air, 100 RH

14
Modeling
15
Winter
16
Winter
17
Summer Cooling
18
Summer
19
Building Automation System (BAS)
  • Discharge Air Temperature / Humidity Setpoint
    Control
  • BAS determines air temp. setpoint (adj.) based on
    indoor/outdoor conditions

20
HOBO Time Constant
21
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22
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23
Hobo Time Constant
  • Estimated to be 384 seconds cooling, 318 seconds
    warming
  • Approximately 6 - 6.5 minutes, taking an average

24
HOBO Data Acquisition
25
HOBO Placement
  • Placed on second floor main room
  • 3 HOBOS
  • Vertical and horizontal temperature
    stratification
  • Basement
  • 1 HOBO
  • Gain basic understanding of how basement works

26
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27
HOBO Placement
  • Inter-floor Stratification
  • March 15-17

28
Temperature Stratification
29
Conclusion
  • Upcoming Week
  • Determine whether the system will work on hottest
    day of the year.
  • Model Refinement
  • Incorporate inter and intra-floor temperature
    stratification.
  • Data Refinement
  • Absorbptivity constant, R Values, of light
    fixtures …
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