Download
1 / 58
590 likes | 1.2k Views
St. James Episcopal Church. Cool Cities Forum. On-Line Edition ... our electrical consumption at St. James Episcopal Church dropped 12% and 13% respectively. ...
E N D
Slide 1:Energy Conservation at St. James Episcopal Church Cool Cities Forum On-Line Edition
Presented by Carl Ball April 27, 2010
Slide 3:Building Energy Parameters
6800 sq ft on two floors Brick veneer over concrete block construction 1st phase completed in 1952, 2nd phase in 1955 Nave has high cathedral ceiling and large stained glass windows. Very little insulation throughout building Single pane windows replaced with insulated windows in mid-90’s. 4 radiator heat, 5 AC and 1 HP/boiler zones Main thermostats are 7-day programmable
Slide 4:Energy Conservation
In 2004, we replaced 26 incandescant light fixtures with fluorescent light fixtures, resulting in an approximate 72% reduction in the lighting load for the fixtures replaced. This change contributed to saving over 10% annually in electrical use. Side Benefit - To date, we have not changed a single lamp in our Parish Hall.
The replacement light fixtures were installed on July 31, 2004 and we replaced three 5-1-1 programmable thermostats in our greatest usage areas with 7-day programmable thermostats in the fall of 2005. Replacement thermostats benefited both our gas consumption and our electrical consumption.Slide 6:Energy Conservation
Comparing our two year average electric bills for 2003/2004 , 2005/2006 and 2008/2009, our electrical consumption at St. James Episcopal Church dropped 12% and 13% respectively. After changing the thermostats in the fall of 2005, our “normalized” gas consumption dropped 13% between the 2004/2005 December thru March winter months and the same winter months of 2005/2006.
Slide 7:Energy Conservation Methods Educate Congregation
You can’t control cost – you can only control consumption
In comparing our electric bills for calendar years 2008 and 2009, our consumption remained the same (actually decreased by a negligible amount) but our cost increased 23%.Slide 9:Energy Conservation Methods
What is the cause of your highest energy consumption, aka cost?
Slide 10:Energy Conservation Methods
Could be - your congregation. Misuse of HVAC equipment is often the largest cause of high energy bills.
Slide 11:Energy Conservation Methods
One possible solution Programmable thermostats
Slide 12:Energy Conservation Methods
Prior to the fall of 2005, we had 5-1-1 thermostats for our main energy usage zones – with lots of confusing touch pads. 5-1-1 thermostats have the same Monday thru Friday programs but separate Saturday and Sunday programs.
Slide 14:Energy Conservation Methods
So I covered up the touch pads that the congregates didn’t need to use.
Slide 16:Energy Conservation Methods
In the fall of 2005, we installed 7-day programmable thermostats in the high usage areas.
Slide 18:Energy Conservation Methods
Educate Congregation (Understanding – co-operation – feedback) Make Physical Improvements
Slide 19:Energy Conservation Methods Educate Congregation
Posted charts monthly on bulletin board. Wrote monthly article for the newsletter. Instructed congregation on how to properly use thermostats. Posted instructions on or by thermostats. Hold meetings in rooms already conditioned. Use smallest space available for meetings. Hold meetings in member’s homes.
Slide 20:Energy Conservation Methods Educate Congregation
Learn/teach how your heating and cooling systems work. Keep outside doors closed. Close inside doors to isolate conditioned spaces. Turn off boiler during summer. Set programs to reset if someone forgets to resume program.
Slide 21:Spread Schedule to Reset automatically if temporary programs are not reset manually
Slide 22:Energy Conservation Methods Physical Improvements
Replace thermostats with 7 day programmable thermostats. Replace inefficient light fixtures and appliances with energy efficient light fixtures and appliances. Update to zoned distribution systems when feasible. Install insulation and replace windows. Install automatic door closers and/or add doors.
Slide 23:Energy Conservation Methods Physical Improvements
Cost-Benefit Analysis – includes, but not limited to, the following parameters: Need/desire to reduce costs Methods/materials/labor Aesthetics Disruption
Slide 24:Energy Conservation Methods Cool Cities Forum
End of Presentation
Slide 25:Energy Conservation Methods
Slides For Q and A session
Slide 26:Energy Conservation Methods Educate Congregation
You can’t control cost – you can only control consumption
Slide 27:Cool Cities Coalition Knowledge Goals For Energy Conservation Forum - April 27, 2010
How to analyze their congregation's electric bill – Part 1 Reading your meter to identify cause/source of greatest use Initially, I would recommend reading your meter several times during each billing cycle, over several billing cycles, to monitor when energy is being used and to relate that use to church “activities” – make a standard form showing dates, even times, meter reading, temperature and weather conditions and any unusual church events since the last reading. Evaluate data for anything unusual, esp. a sudden change in energy use.
Slide 28:Cool Cities Coalition Knowledge Goals For Energy Conservation Forum - April 27, 2010
How to analyze their congregation's electric bill – Part 2 When analyzing bills, note the following: Number of days for which bill covers Multiplier – currently Appalachian Power has been using 1.0000 Use raw consumption numbers – ignoring multipliers (multipliers are currently not a problem with AEP but is with gas bills) If comparing to previous month or year, “normalize” readings to the same number of days Any unusual weather or church activities during the billing cycle Any unusual equipment or building issues occurring during the billing cycle Any changes in the rate or fees from previous billings
Slide 29:Cool Cities Coalition Knowledge Goals For Energy Conservation Forum - April 27, 2010
How to present information on costs and solutions to their leaders First compare “normalized” consumption figures to compare apples to apples Show/discuss/evaluate trends in consumption – how and why they occurred Relate notable changes in the consumption to weather, church, and equipment or building events Evaluate/discuss how to “control events” or to improve efficiency to conserve energy
Slide 30:Cool Cities Coalition Knowledge Goals For Energy Conservation Forum - April 27, 2010
How to put together a task force to attack the problem of growing electric bills – Part 1 Church representation – recruit/consult with individuals that represent areas that would be affected by dramatic changes in the way the church uses energy – lights, water heater, office equipment, appliances, HVAC and “green” initiatives Experience – recruit individuals that have related experiences – electricians, HVAC techs, and construction workers – see also Knowledge group Knowledge – recruit individuals that have/have had specific, relatable careers – engineers and architects – see also Experience group
Slide 31:Cool Cities Coalition Knowledge Goals For Energy Conservation Forum - April 27, 2010
How to put together a task force to attack the problem of growing electric bills – Part 2 Include “Budget Conservatives” – self explanatory Availability – recruit individuals that have the time/interest to study the issues and the solutions Size – restrict size of the task force to effect working relationships – say 2 to 6 people, depending on the size of the congregation and the availability of “qualified” individuals
Slide 32:Cool Cities Coalition Knowledge Goals For Energy Conservation Forum - April 27, 2010
? A handout of resources: Other congregational leaders, local businesses (like Sav-Elec), web sites, etc.
Slide 37:Energy Conservation Methods
The new fluorescent lamps are rated for 10,000 to 20,000 hours of use as compared to approximately 1,000 hours for an incandescent bulb. This means that we have more consistent lighting, without the need to constantly replace bulbs.
Slide 43:Energy Conservation Methods Furnace Efficiency
If you replace a 60% efficient furnace with a 80% efficient furnace, what is the percent improvement in efficiency?
Slide 44:Energy Conservation Methods Furnace Efficiency
20%?
Slide 45:Energy Conservation Methods Furnace Efficiency
The difference between 60% and 80% is 20% - right?
Slide 46:Energy Conservation Methods Furnace Efficiency
Wrong The 20 % improvement is actually the improvement over the old 60% furnace so the percent improvement is 80/60 = 1.33% Another way to look at it is to look at only the improvement over the 60%; e.g. (80 – 60)/60 = 20/60 or .33, which is a 33% improvement in efficiency.
Slide 47:Energy Conservation Methods Furnace Efficiency
Likewise, replacing a 60% furnace with a new high efficiency furnace, say a 92% furnace, would improve your efficiency by a whopping 53%
Slide 48:Energy Conservation Methods Physical Improvements
Know your heating and cooling systems General Ages of equipment Equipment Efficiency Ratings – age can be a good indicator Exposure – effects of sun, shade, wind, etc. on equipment Visual inspection/servicing/cleaning of filters and equipment Fossil Fuel Systems (gas or oil systems) Constant flame pilot or igniter Boilers – gravity system or circulating pump Heat Pump Difference between heat pump heat and fossil fuel heat Type of back-up heat – electric or fossil fuel How operation of a HP thermostat affects energy cost
Slide 49:Energy Conservation Methods Physical Improvements
Thermostats must match types of systems installed Fossil Fuel Heat Pump – understanding a HP thermostat Multi-staged equipment
Slide 50:Energy Conservation Methods Physical Improvements
Replace 5-1-1 thermostats with 7-day programmable thermostats Program thermostats Temperature considerations Equipment, pipes, structure and furniture Space utilization – repetitious use week to week Thermostats typically have 4 settings per day Wake-Leave-Return-Sleep
Slide 51:Energy Conservation Methods Physical Improvements
Program thermostats (con’t.) Each program can be set for any time of day Space out settings to automatically reset Programs can be set, in advance, for special events/services and then reset to Program settings on a flexible schedule – avoids early or special trips to raise/lower temperature Post signs to close (or leave open) doors – and when – and, maybe, why Install automatic door closers
Slide 52:ENERGY CONSERVATION Do not set temperature higher than 65.
We need your help in our continuing effort to control our utility cost. Please use church areas already comfortable, when practical. If you need to change the temperature, only press the visible UP and DOWN arrows. The word TEMPORARY will appear on the screen. This will hold the “temporary” temperature until the next program cycle, when the temperature will automatically revert back to the programming. Press i to see present settings. Press RUN PROGRAM (inside cover) when leaving an area to return to programming immediately. For permanent changes, contact the Jr. Warden.
Similar data is available for AC and HP systems
