Condensate – Free Water
Condensate – FreeWaterF-1014 October 9, 2009WaterSmart09Phil WeynandManager – Conservation
Page 2CONDENSATE RECOVERY
Page 3DefinitionCONDENSATE Atmospheric moisture that has condensedbecause of a cold surface The air in contact with the cool surfacelooses it's ability to hold as much moistureand that water condenses. The same waymoist air that rises into colder aircondenses to form clouds and, if it's reallyhumid, rain.
Conservation Program GoalsPage 4Reduce the need for water by looking atALL of the ways water is used in SanAntonio. Reach 116 gal/person/day within ten years. Save water at 400/acre-feet Maintain quality of life in region
Page 5Conservation Effort Reduces DemandProposal – Demand Goals (GPCD)250225230210Gallons Per Capita per Day19013915013011090701998 Goals 002200320042005200620072008GPCD170
Unique Challenges Plenty vs. Drought– We have plenty of water in a “normal” year when rain falls.– But we lose up to 40% of our permit for our main supply indroughts.– Carrying 40% of capacity we will not use in most years isexcessively expensive. San Antonio is growing rapidly All new supply options are expensive and difficultPage 6
Page 7Supply and Demand (Drought Conditions)Edwards supplies would be cut by 40% in extreme drought, creatinga shortage as early as 2013 without development of new supplies450,000425,000400,000Under Severe Drought Restrictions375,000Normal 5,000150,000125,000100,00075,000Edwards SuppliesNon-Edwards SuppliesASR 011201350,0002009Acre-Feet300,000
Page 8Air Conditioning Condensate,Why A Good Deal? Condensate is producedwhen need is high. Condensate water isFREE Condensate water is notrestricted in usage as partof potable system Condensate water is highquality
Page 9Residential Condensate200 to 1,000 Gallons Per Month
Page 10Commercial & IndustrialCondensate
Page 11Water Quality Condensate is a high quality source of water Condensate is similar to distilled water Suspended solids are low, the pH is neutralto slightly acidic, temperature is low It is important to keep air-conditioningequipment as clean as possible in order toensure that condensate staysuncontaminated Evaporator coils and drip pans should bekept free of dust, dirt and other debris
Page 12City of San Antonio OrdinanceCOSA 34-274.1 Condensate CollectionNewly constructed commercial buildingsinstalling air conditioning systems on andafter January 1, 2006 shall have a singleand independent condensate wastewaterline to collect condensate for futureutilization.
Page 13Collection PotentialCondensate collection potential isdependent upon such factors as the sizeand operational load of the particularsystem, ambient temperature andhumidity. A general rule of thumb is that.1 to .3 gallons of condensate is producedfor every ton-hour.
Page 14Calculations500-Ton AHULoad Factor - 80 PercentActual Load - 400 TonsCondensate Production .2 Gallons/Ton Hour400X0.2 80 gallons per hour1.333 gallons per minute57,600 gallons/Month
Application Customer submits completed applicationand proposal to SAWS with the following:– Complete list of equipment withassociated costs– Timeline of project– Conceptual design– Estimated water savings– Expected equipment lifePage 15
Terms of RebatePage 16 Equipment must remain in use for 10 yearsor life of equipment, whichever is less The water saving project should be in anarea that can be sub-metered or easilymonitored to review water consumption Water use data must be collected before andafter the retrofit and must be reported toSAWS
Rebate Based on– Actual water savings– Life of Equipment– Installation Cost Maximum of 50% of total project costPage 17
Page 18Tank Sizing The size of the tank will be determined by the enduse. If the condensate will be used as continuous makeup for process water or cooling water, the tank canbe relatively small. If the condensate will be used for supplementalirrigation, tanks will need to be sized based oncondensate production rates and landscaperequirements.
Page 19Case Studies
Page 20San Antonio Public Library
Page 21System Data Condensate Production: 10:30 AM, Aug. 16, 2002 1 GPM Daily Condensate Recovery Potential Total Based on Single Sample Event – 1440 GPD
Page 22System Data Cont.26,000 Square Feet of Landscape1,440 Gallons Day PotentialSurplus Storage Need 8,835 Gallons(June, July & August)Drip IrrigationFerro-Concrete Collection TanksTotal Cost 21,500.00
Page 23Rivercenter Mall
Page 24Collection Potential 12,000,000 Gallons/Year
Page 25End Use – Cooling TowerMake-Up Water
Page 26Total Savings 12 MillionGallons Per Year
Page 27System Data Condensate from Four Air HandlersAnnual Savings 12,000,000 Gallons1,000 Gallon Storage TankCooling Tower Make-upTotal Cost - 32,058Financial Savings/Year - 49,500*Simple Payback Period – 8 Months*Water and Sewer Savings
Page 28SONY SEMICONDUCTOR,1999
Page 29System Data Condensate from three air handlersAnnual Savings 1,871,000 GallonsPiping, three return pumps and meterCooling Tower Make-upTotal Cost - 5,777Financial Savings/Year - 4,371*Simple Payback Period – 16 Months*Water and Sewer Savings
Page 30HEB Grocery DistributionCenter, 2003
Page 31System Data Condensate from air handlers andrefrigeration systems Annual Savings 6,200,000 Gallons Boiler Feed Make-up Water Total Cost - 19,000 Financial Savings/Year - 20,600 Simple Payback Period – 11 Months *Water and Sewer Savings
Page 32Biological ControlsDepending on the end use or the storagerequirements, the user may want toconsider regular biological testing and/ortreatment (UV, ozone, chlorine, bromine,etc.)
Page 33
Page 34How Dry?1560’s vs. 1950’s
Condensate – FreeWaterF-1014 October 9, 2009WaterSmart09Phil WeynandManager – Conservation
A general rule of thumb is that .1 to .3 gallons of condensate is produced for every ton-hour. Collection Potential. Page 14. 500-Ton AHU . Load Factor - 80 Percent. Actual Load - 400 Tons. Condensate Production .2 Gallons/Ton Hour . 400X0.2 80 gallons per hour. 1.333 gallons per minute.
saturated water. Low pressure feed water pumps (condensate extraction pumps) pump condensate water to the low pressure heaters where this condensate water gets some heat from extracted steam. After low pressure heaters, condensate water goes to Deaerator and then with the help of high pressure feed water pumps (boiler
evaporator coil evaporator coil condensate drain tray condensate drain tray condensate drain tray vinyl tube condensate drain tray reservoir breather tube a b inside cover . code universal voltage kits 83809 (asp-ma-uni) 100-250 vac .2a 16w 2lbs 1 silent plus kits
It is a condensate collection point for the steam generator. From the condenser, the condensate flows into the condensate pump and then through the other components in the condensate system. In order to protect pumps from overheating and to prevent cavitation, Fisher condensate pump recirculation valves withstand varying
of steam is removed, the condensate will be close to the saturation temperature corresponding to the steam pressure in the heat exchanger shell. Slight sub-cooling of the condensate will occur before exiting from the shell. A steam trap is installed in the condensate outlet piping. The traps function is to drain condensate but to prevent live
Boiler Feed Water Heat Exchanger Dearator Feed Water (Tube-Side) DGA Steam Condensate (Shell-Side) Steam Condensate Tanks D-102 A/B To Dearators D-103 A/B/C E110 -A 10 - B E110 -C E110 -D E110 -E E110 - F DGA Steam Condensate (Shell-Side) Condensate Stripper Reboiler Type: Shell & Tube
Condensate Inlet – Pressure 100#-300# – Temp 60F – 100F – If source condensate is delivered at high pressure, a flash separator may be used upstream of the inlet 1. Solids Filter 1. Coalescing Filter – Separates condensate and water – Larger units may have a separate flash stabilizer off skid 2. Feed Bottom Exchanger
5 Pipe Connections 18 5.1 Water connections 18 6 Condensate Disposal 19 6.1 General requirements 19 6.2 Connections 19 6.3 Pipework 19 6.4 External pipework 19 6.5 Condensate soakaway 19 6.6 Condensate trap 20 6.7 Condensate disposal pipework 20 6.8 Inspection and cleaning of trap 20 7 Electrical 21 7.1 Connecting the power supply 21 7.2 Frost .
6 Installation NB series Acidic Condensate pH Treatment Tanks -- Installation/Operation & Maintenance A Condensing boiler furnace or hot water heater B Condensate neutralizing tank C Boiler/furnace condensate trap connection D Boiler/furnace vent E Vent condensate trap, when used — Install a trap as shown. F Drain or sump G Install 3/4 inch PVC vent piping to outside from vent tapping on .
