Current Situation Current Situation n Americans are Currently Americans are Currently Spending $3.5 Billion / Year to Spending $3.5 Billion / Year to Heat Pools Heat Pools n The Public Sector Accounts for The Public Sector Accounts for Energy Energy over $1 Billion of the Total over $1 Billion of the Total n A Savings of Over 50% is A Savings of Over 50% is Smart Pools Smart Pools Achievable with Currently Achievable with Currently Available Technology Available Technology Average Monthly Heating Average Monthly Heating Costs Costs Heated Pools in U.S. Heated Pools in U.S. City Outdoor Indoor n Public Pools Public Pools 145,000 145,000 Denver Denver $310 $310 $350 $350 n Semi Semi-Public Pools Public Pools 170,000 170,000 Boston Boston $380 $380 $590 $590 n Residential Residential 2,815,000 2,815,000 Los Angeles Los Angeles $480 $480 $330 $330 Based on a 1000 sqft pool heated to 80 o with natural gas Based on a 1000 sqft pool heated to 80 with natural gas Understanding Pool Understanding Pool Evaporating Water Requires Evaporating Water Requires Energy Loss Energy Loss A Large Amount of Energy A Large Amount of Energy Convection, Other Heat One Pound of Water Heat One Pound of Water 10% From 50 o to 80 to 80 o From 50 30 BTUs 30 BTUs Evaporation 70% Evaporate One Pound of Evaporate One Pound of Water at 80 Water at 80 o 1048 BTUs 1048 BTUs Radiation 20% Page 1 1
Pool Pool What’s the Answer What’s the Answer to Evaporation? Covers! to Evaporation? Covers! Types of Cover Materials Methods of Use Types of Cover Materials Methods of Use n Manual Manual n Bubble / Solar Covers Bubble / Solar Covers n Semi Semi-Automatic Automatic n Vinyl Covers Vinyl Covers n Automatic Automatic n Insulated Covers Insulated Covers n Portable Reels Portable Reels n Fixed Reels Fixed Reels n Tracks Tracks Other Advantages Other Advantages n Reduces Make Reduces Make-Up Water by Up Water by Solar Pool Heating Solar Pool Heating 30 30-50% 50% n Reduces Chemical Reduces Chemical Systems Systems Consumption 30 Consumption 30-50% 50% n Prevents Dirt & Other Debris Prevents Dirt & Other Debris from Getting into Pool from Getting into Pool Page 2 2
Why Solar for Pools? Solar Pool Heating System Why Solar for Pools? Solar Pool Heating System n Best use of Solar is to Heat Best use of Solar is to Heat Swimming Pools Swimming Pools n Low Temperature Heat Required Low Temperature Heat Required n Lower Cost Collectors can be Used Lower Cost Collectors can be Used n Solar Energy is a Renewable Solar Energy is a Renewable Domestic Resource Domestic Resource n Makes Pool Heating Affordable Makes Pool Heating Affordable n Can Extend Swimming Season Can Extend Swimming Season Collector Siting Collector Siting Types of Collectors Types of Collectors n Collectors should be Sited to Collectors should be Sited to n Unglazed Unglazed Receive Unobstructed Sunlight Receive Unobstructed Sunlight n Glazed Glazed from 8am from 8am - 4pm 4pm n Residential Needs 200 Residential Needs 200-700 sqft of 700 sqft of Open Roof or Ground Open Roof or Ground n Commercial Needs up to 3000 Commercial Needs up to 3000 sqft of Open Roof or Ground sqft of Open Roof or Ground Collector Orientation Collector Tilt Collector Orientation Collector Tilt n Ideally Collectors should face Ideally Collectors should face n Summer Only Summer Only - Latitude minus Latitude minus Due South Due South 10-15 degrees 10 15 degrees But 15 o East or West of South n But 15 East or West of South n Winter Only Winter Only - Latitude plus 10 Latitude plus 10- Will Do Will Do 15 degrees 15 degrees n Year Around Year Around - Latitude Latitude Page 3 3
Collector Sizing Collector Sizing Wind Breaks Wind Breaks n Pool Size & Desired Temperature Pool Size & Desired Temperature 7 mph Wind Can 7 mph Wind Can n Available Solar Insolation Available Solar Insolation Increase Consumption Increase Consumption n Average Temperatures & Average Temperatures & Windspeed Windspeed Over 300% Over 300% n Collector Orientation & Tilt Collector Orientation & Tilt Wind Breaks Energy Efficient Pumps Wind Breaks Energy Efficient Pumps n Motors Can Consume Several Times Motors Can Consume Several Times n Trees Trees - But Avoid But Avoid Their Initial Cost Each Year Their Initial Cost Each Year Pool Shading Pool Shading n Proper Sizing is Critical to Efficient Proper Sizing is Critical to Efficient n Shrubs Shrubs Operation Operation n Energy Efficient Motors Can Pay for Energy Efficient Motors Can Pay for n Fences Fences Themselves in a Very Short Time Themselves in a Very Short Time n A Small Increase in Efficiency Yields A Small Increase in Efficiency Yields Large Savings Large Savings Energy Efficient Lighting Energy Efficient Lighting Shower Savings Shower Savings n Compact Fluorescents Save 1/2 Compact Fluorescents Save 1/2 - 2/3 the 2/3 the Electricity and Last 10 Times as Long and Electricity and Last 10 Times as Long and n Set Temperature at 95 Set Temperature at 95-110 110 o Incandescent Lamps Incandescent Lamps n Install Low Install Low-Flow Showerheads Flow Showerheads n Electronic Ballasts and T Electronic Ballasts and T-8 Lamps Save 1/3 8 Lamps Save 1/3 Compared to Standard Fluorescents Compared to Standard Fluorescents n Insulate Water Heater Insulate Water Heater n High Intensity Discharge (HID) Lamps High Intensity Discharge (HID) Lamps n Install Auto Install Auto-Shut Off Valves Shut Off Valves Offer High Efficiency and High Illumination Offer High Efficiency and High Illumination (Large Pool Rooms & Outdoor Lighting) (Large Pool Rooms & Outdoor Lighting) n Motion Detectors (Shower Rooms/Changing Motion Detectors (Shower Rooms/Changing Areas, Offices) Areas, Offices) Page 4 4
General Pool Energy General Pool Energy Summary Summary Management Management n Pool Temperature Pool Temperature - Each Degree Each Degree n Implement the Low Implement the Low-Cost/No Cost/No- Increase in Temperature Ups Increase in Temperature Ups Cost Ideas First Cost Ideas First Consumption 10% Consumption 10% n Install a Pool Cover Install a Pool Cover n Keep Intake Grates Clean Keep Intake Grates Clean n Investigate a Solar Pool Heating Investigate a Solar Pool Heating n Reduce Filtration Time Reduce Filtration Time System System n Don’t Backwash Filter More Don’t Backwash Filter More Frequently than Necessary Frequently than Necessary n Keep Pool Heater Tuned Up Keep Pool Heater Tuned Up Energy Energy Smart Pools Smart Pools U.S. Department of Energy U.S. Department of Energy Page 5 5
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