CONVERTING A CLOSED-LOOP WATER SYSTEM TO A …

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CONVERTINGACLOSED-LOOP WATER SYSTEMTO AGLYCOL SYSTEMPresented atAlberta Public Works, Supply & ServicesProperty ManagementWater Treatment Co-ordinators' Meeting #29Roland Michener Recreation CentreRed Deer, AlbertaApril 21st Yuzwa, ENGINEERING Edgemont Bay , AlbertaT3A 2K7Page 2 of 8INTRODUCTIONIn most cases, the primary reason for CONVERTING a closed loop hot WATER heating orchilled WATER SYSTEM to a glycol SYSTEM is to prevent freeze/burst damage ofequipment that is exposed to sub-freezing ambient temperatures. However, thepotential for reduced maintenance costs could also justify this conversion in somesituations. That is, monthly testing is not required for glycol systems a benefit thatmay be especially important for remote locations, and seasonal drainage of chilledwater coils is not required for glycol reasons for not CONVERTING a closed loop hot WATER heating or chilled watersystem to a glycol SYSTEM include the capital cost of the glycol particularly for largesystems, the reduced heat transfer for glycol, and the increased pump horsepowerrequired for.

Page 2 of 8 INTRODUCTION In most cases, the primary reason for converting a closed loop hot water heating or chilled water system to a glycol system is to prevent freeze/burst damage of

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