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Projects Updates for Topic: cooling towers

  1. Week 2 Update

    Associated Project(s): 

    Good morning all,

    Austin here and yesterday’s meeting with Morgan White and Sarthak Prasad went well. I reviewed articles on how power plants use freshwater and the ways to reduce their consumption. The biggest factor in water use at power plants is their cooling system. The metric for measuring this is gallon per KWh and it’s categorized by their withdrawal, consumption, and discharge. The different types of cooling systems have their own pros and cons. For example wet recirculating cooling is good because it doesn’t withdrawal a lot of water but it consumes more than the other methods. Then an example of an advanced cooling system is a hybrid system that used air and a cooling tower to combine the advantages of a cooling tower and the resourcefulness of using a dry system. The draw backs of using only air is it makes the thermal conversion efficiency go down and increases operational costs. More details can be found in the attached file.

    We proceeded to continue research on how our power plant and chiller plants operate by looking at the water and energy consumption of the billing logs. We plan on meeting with Mike next week to gain more insight on the chiller plants and their water consumption. Then we looked at the piping layouts for the Universities potable and cooling water pipelines.

    To further our research I will finish reviewing some more articles on cooling tower water consumption. Then find articles with more detail on how cogeneration plants work and what metrics are used to measure their energy and water consumption. There should be more data on this from different European studies because they have similar systems like ours at Abbott. Lastly I will familiarize myself with our systems by researching the chiller plants and Abbott information given on the Facility & Services webpage.

    Thanks,
    Austin Jung

  2. Illini Union cooling towers removed

    The Illini Union has demolished its old cooling towers for HVAC in the past 15 years, and recently demolished the old evaporator cooling system for the refrigeration chilling water in 2017. Almost all of our HVAC is now on DDC, with the exception of AHU’s 1, 2, & 3 in the South Building attic, and AHU-21 in the North Building NW subbasement.

  3. OMA representatives review stand-alone cooling towers

    Water Station Foreman, Shawn Young, indicated today that there are two remaining stand-alone cooling towers on campus buildings maintained by F&S: Temple Buell Hall and the Personnel Services Building.  One of these (Personnel) is scheduled to be added to the central chilled water loop in 2020, according to the Utilities Energy Production and Distribution Master Plan.  Base on that discussion, Morgan Johnston will be following up with the Water SWATeam to let them know that because there are so few remaining stand-alone cooling towers, this is not a high-priority item to pursue.

  4. Water & Stormwater SWAT Meeting Minutes 3/30/2017

    Updates and discussion of greywater meter, greywater design standards, cooling tower cycles of concentration, water use dashboard, and student outreach. 

  5. iWG Meeting Notes from Jan. 27, 2017

    The iCAP Working Group met and discussed the following agenda items.  Meeting notes are attached.

    1. Brief iCAP Portal overview by Morgan
    2. Discuss any updates to Water002, Cooling Tower Increase COC
    3. Discuss Trans008, Bike Parking in Ramps
    4. Discuss updates to Econs004, Green Labs Coordinator
    5. Consider issues with recommendation process and view recommendation tracker

    Attached Files: 
  6. Water002 Cooling Tower Increase COC recommendation - Submittal

    The Water and Stormwater SWATeam submitted a recommendation to the iWG stating,

    "We recommend that a small tonnage (< 700 tons cooling capacity) stand-alone cooling tower on campus operating at a water concentration cycle of less than 2.5 be operated using softened water under high pH/high silica conditions to demonstrate near zero blowdown operation."

    See attached the SWATeam recommendation, Water002 Cooling Tower Increase COC, complete with comments from all the Water and Stormwater SWATeam members.