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LBT Q2 2008 Eng/SW LBT Q2 2008 Eng/SW ReviewReview
PLMG: PlumbingPLMG: Plumbing
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Highlights (Q2/2008)Highlights (Q2/2008)
Have recently replaced worn contactors in the Primary Loop Have recently replaced worn contactors in the Primary Loop chillerschillers
Some chiller problems identified, i.e. flow in secondary and IC Some chiller problems identified, i.e. flow in secondary and IC loops and glycol/water expansion and contraction, expansion loops and glycol/water expansion and contraction, expansion tanks purchased to install in secondary looptanks purchased to install in secondary loop
47 deg F plumbing to closed cycle compressors completed, except 47 deg F plumbing to closed cycle compressors completed, except for insulationfor insulation
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Open IssuesOpen Issues TechnicalTechnical
Chill water lines are not to printChill water lines are not to print Chill water system design for variable viscosity needs reviewChill water system design for variable viscosity needs review Chiller systems operate off of siphon principle, still not good for Chiller systems operate off of siphon principle, still not good for
our dynamic systemour dynamic system 47 deg chill water loop needs modified, we continue to have 47 deg chill water loop needs modified, we continue to have
issues with the secondary loopissues with the secondary loop ScheduleSchedule
Verify operation, coil sizes, redo prints, put in expansion tanksVerify operation, coil sizes, redo prints, put in expansion tanks FinancialFinancial
Costs have not been fully identifiedCosts have not been fully identified ResourceResource
Moving ahead on definition and solution of issuesMoving ahead on definition and solution of issues Consultant needed to address overall system design issuesConsultant needed to address overall system design issues Progress limited by other high priority tasksProgress limited by other high priority tasks
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Planning (Q3/2008)Planning (Q3/2008) Redesign 47 deg water system, still needs to be done Insulate closed cycle compressor chill water lines
