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Senior Design Team

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Propylene glycol mixed with water (50% water and 50% glycol) will be used to ... system to start pumps to circulate glycol/water solution as soon as temperature ... – PowerPoint PPT presentation

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Title: Senior Design Team


1
Senior Design Team 1
  • David Freese Mitch Mork
  • Wendy Parker Katie Russell
  • Anthony Yamat Steve McGee

2
Proposed Layout 1
3
Cut Estimates
  • Layout 1
  • Total path  
  • Pod 20,000 ft2
  • Walk way    
  • Length 1,063ft
  • Total Area 113,500 ft2
  • Not heated 70 ft
  • Not Heated (Area) 560 ft2
  • Total Path (area) 114,100 ft3

4
Proposed Layout 2
5
Cut Estimates
  • Layout 2
  • Total path
  • Pod 20,000 ft2
  • Walk way    
  • Length 607 ft
  • Total Area 75,000 ft2
  • Not heated 98 ft
  • Not Heated (Area) 1,067 ft2
  • Total Path (area) 76,000 ft2

6
Heated Pathways
  • Based on calculations our heat load will be
    1,363,200 Btu/hr and to meet this load we will
    need around 14,000 ft of piping, that will be
    divided in 30 loops.
  • We will need probably 3 manifold locations
    between sites.
  • Propylene glycol mixed with water (50 water and
    50 glycol) will be used to prevent pipes from
    freezing.
  • There are two ways of operating the system 1)
    Idling- preferable but most expensive, since a
    system will run until set temperature is
    achieved. 2) Set control system to start pumps
    to circulate glycol/water solution as soon as
    temperature goes down to 40F. If sensors detect
    precipitation or temperature below 35F the
    boiler will kick in and start heating slab.
  • We should have one mechanical room located within
    building that will be on site. Assuming that they
    will need unit heaters or hot water for VAV (
    variable air volume boxes), we can use the same
    boiler that is used for snowmelt. Knowing that
    water temperature for snowmelt and VAV are
    different we will need heat exchangers.
  • Of course besides the equipment I have already
    stated there will be pumps, maybe AHU ( air
    handling unit), and some other miscellaneous
    things.
  • Most people believe that a snowmelt system
    creates huge amount of runoff, but that is not
    true. In well designed systems, the whole point
    is to get the slab to the temperature that will
    evaporate snow as soon as it hits the slab.

7
(No Transcript)
8
Areas of Snow Removal Path 1
9
Areas of Snow Removal Path 2
10
Example of a Pod
11
Layout in 3d
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