The workshop provided information on home heating technologies including solar thermal and geothermal systems. For solar thermal, it discussed the differences between flat plate and evacuated tube collectors and provided case studies showing returns on investment of 16.7-23.7% for domestic hot water and pool heating systems. For geothermal, it outlined the types of systems and discussed installation considerations and costs, noting that while upfront costs are higher, operating costs are reduced by 66% compared to gas systems. A case study compared typical system costs to a geothermal heat pump system.
In case you missed it !! NuTech gave a presentation at the recent Gas Networks Ireland (GNI) Conference for BER Assessors. The presentation deals mainly with how the NuTech Solar Enhanced Heating and Hot Water system can be used together with a simple and reliable gas boiler system can be used to comply with Part L & achieve an A Rated House. The presentation also gives information on the NuTech Solar Enhanced Ventilation and Hot Water system can be used to satisfy Part L.
For download link head to http://solarreference.com/solar-cooling-training-presentation/
Also available from SOLAIR website.
A presentation from the SOLAIR project on sizing of solar air conditioners. their website has a lot of details information. For similar useful resources visit us on http://solarreference.com
Andrew Bissell & Richard Jennings, Managing Director Castle Rock Edinvar presented the attached at an event organised by Holyrood Events - Eradicating Fuel Poverty: Delivering Warm Homes.
If you require any further information on this presentation please contact andrew.bissell@sunamp.co.uk or for information on the event please contact zoe@hoyrood.com
In case you missed it !! NuTech gave a presentation at the recent Gas Networks Ireland (GNI) Conference for BER Assessors. The presentation deals mainly with how the NuTech Solar Enhanced Heating and Hot Water system can be used together with a simple and reliable gas boiler system can be used to comply with Part L & achieve an A Rated House. The presentation also gives information on the NuTech Solar Enhanced Ventilation and Hot Water system can be used to satisfy Part L.
For download link head to http://solarreference.com/solar-cooling-training-presentation/
Also available from SOLAIR website.
A presentation from the SOLAIR project on sizing of solar air conditioners. their website has a lot of details information. For similar useful resources visit us on http://solarreference.com
Andrew Bissell & Richard Jennings, Managing Director Castle Rock Edinvar presented the attached at an event organised by Holyrood Events - Eradicating Fuel Poverty: Delivering Warm Homes.
If you require any further information on this presentation please contact andrew.bissell@sunamp.co.uk or for information on the event please contact zoe@hoyrood.com
Performance Improvement of Solar PV Cells using Various Cooling Methods: A Re...rahulmonikasharma
the operating surface is a key operational factor to take into consideration to achieve higher efficiency when operating solar photovoltaic system. Proper cooling can improve the electric efficiency and decrease the rate of cell degradation with time, resulting in maximization of the life span of photovoltaic modules. The excessive heat removed by the cooling system used in domestic, commercial or industrial applications. Various cooling methods available for PV cells Such as Active and Passive cooling system. In this paper use various cooling methods for PV panel. Just like it heat pipe, floating, PCM used in back side of PV panel, evaporative cooling for PV panel.
Renewable Energy Systems For Building Professionals Great Lakes Brewing Com...gogeisel
A presentation delivered to Cleveland design and building professionals on April 22, 2010. This presentation highlights the design and installation of a solar thermal hot water heating system.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
Intep: 24th St Passive House (Student Workshop #1)TE Studio
Lecture given to the students at Western Technical College on 1/30/2013. The slideshow contains a lot of full-screen images but no subtitles, therefore omitting some of the information which would have been given verbally during the presentation.
Challenges implementing Green Initiatives in Tall BuildingsTejwant Navalkar
We take a look at challenges in implementing Renewable Energy to meet Green Building Requirements in Tall buildings. This paper also suggests possible solutions to meet these challenges through a case study and makes a case to review the existing Green Building guidelines with respect to Renewable Energy to make to effective and socially relevant.
Examples of Convection
What is convection? The convection is the heat transfer based on the actual motion of the molecules of a substance: here involves a fluid which can be gas or liquid.
The transmission convective heat may occur only in fluids where natural movement (the fluid extracts heat from the hot zone and changes densities) or forced circulation (through a fan the fluid moves), the particles can move transporting the heat without interrupting the physical continuity of the body. Here a series of convection examples:
The heat transfer of a stove.
Hot air balloons, which are held in the air by hot air. If it cools, the balloon immediately begins to fall.
When the water vapor fogs the glass of a bath, by the hot temperature of the water when bathing.
The hand or hair dryer, which transmits heat by forced convection.
The heat transfer generated by the human body when a person is barefoot.
Radiation Examples
What is radiation? The radiation is the heat emitted by a body due to its temperature, in a process that lacks contact between bodies or intermediate fluids transported heat.
The radiation causes a body to be solid or liquid of higher temperature than another, occur immediately transfer heat to each other. The phenomenon is that of the transmission of electromagnetic waves, emitted by bodies at a higher temperature than absolute zero: the higher the temperature, the greater these waves will be.
That is what explains that radiation can only occur while the bodies are at a particularly high temperature. Next, a group of examples where radiation occurs:
The transmission of electromagnetic waves through the microwave oven.
The heat emitted by a radiator.
Solar ultraviolet radiation, precisely the process that determines the Earth’s temperature.
The light emitted by an incandescent lamp.
The emission of gamma rays by a nucleus.
The processes of heat transmission increase and decrease the temperatures of the affected bodies, but also sometimes (as exemplified by ice) are responsible for the phenomena of phase changes, such as the boiling of water in steam, or the fusion of water in ice. Engineering concentrates many of its efforts to take advantage of this possibility of manipulating the state of bodies through the transmission of heat.
Energy and Indoor Air Quality Impacts of DOAS Retrofits in Small Commercial B...RDH Building Science
Heating, ventilating and air-conditioning (HVAC) typically accounts for 30% to 50% of commercial building energy use. Small commercial buildings often use oversized and inefficient rooftop air handling units (RTUs) to provide both air conditioning and ventilation. A conversion strategy to reduce energy
consumption is the installation of a very high efficiency dedicated outdoor air system (DOAS) to provide ventilation with a separate heat pump system to provide heating and cooling. Decoupling the heating and cooling from ventilation allows for improved energy efficiency and control of space conditions. Upgrades to mechanical systems can also improve the indoor air quality (IAQ) and comfort through control of carbon dioxide (CO2) concentrations, dry bulb temperature, and relative humidity (RH).
A pilot study of eight buildings was conducted to investigate the potential benefits of replacing existing RTUs with high efficiency heat recovery ventilators (HRVs) and air source heat pumps in the Pacific Northwest. This report contains results for a subset of seven buildings for which data is available. The
building energy use before and after the conversion was determined using utility data, energy modeling and monitoring. Indoor environmental conditions were measured at hourly intervals for up to one year postconversion using CO2, temperature, and RH sensors. The data was analyzed to determine changes in energy use and IAQ before and after the conversion.
This paper presents the pilot building results pre- and post-conversion. While several factors need to be in place to ensure optimal performance and cost effectiveness, the pilot shows that replacing RTUs with DOAS systems in existing commercial buildings can both reduce energy use as well as improve indoor environmental conditions. This conversion type is viable for a wide variety of building types and scale-up of the retrofits has the potential to significantly improve a previously underserved segment of the building stock.
Presented by James Montgomery at the 15th Canadian Conference on Building Science and Technology.
Bill Gould, CTO at SolarReserve, presented at the GW Solar Institute Symposium on April 19, 2010. For more information visit: solar.gwu.edu/Symposium.html
Performance Improvement of Solar PV Cells using Various Cooling Methods: A Re...rahulmonikasharma
the operating surface is a key operational factor to take into consideration to achieve higher efficiency when operating solar photovoltaic system. Proper cooling can improve the electric efficiency and decrease the rate of cell degradation with time, resulting in maximization of the life span of photovoltaic modules. The excessive heat removed by the cooling system used in domestic, commercial or industrial applications. Various cooling methods available for PV cells Such as Active and Passive cooling system. In this paper use various cooling methods for PV panel. Just like it heat pipe, floating, PCM used in back side of PV panel, evaporative cooling for PV panel.
Renewable Energy Systems For Building Professionals Great Lakes Brewing Com...gogeisel
A presentation delivered to Cleveland design and building professionals on April 22, 2010. This presentation highlights the design and installation of a solar thermal hot water heating system.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
Intep: 24th St Passive House (Student Workshop #1)TE Studio
Lecture given to the students at Western Technical College on 1/30/2013. The slideshow contains a lot of full-screen images but no subtitles, therefore omitting some of the information which would have been given verbally during the presentation.
Challenges implementing Green Initiatives in Tall BuildingsTejwant Navalkar
We take a look at challenges in implementing Renewable Energy to meet Green Building Requirements in Tall buildings. This paper also suggests possible solutions to meet these challenges through a case study and makes a case to review the existing Green Building guidelines with respect to Renewable Energy to make to effective and socially relevant.
Examples of Convection
What is convection? The convection is the heat transfer based on the actual motion of the molecules of a substance: here involves a fluid which can be gas or liquid.
The transmission convective heat may occur only in fluids where natural movement (the fluid extracts heat from the hot zone and changes densities) or forced circulation (through a fan the fluid moves), the particles can move transporting the heat without interrupting the physical continuity of the body. Here a series of convection examples:
The heat transfer of a stove.
Hot air balloons, which are held in the air by hot air. If it cools, the balloon immediately begins to fall.
When the water vapor fogs the glass of a bath, by the hot temperature of the water when bathing.
The hand or hair dryer, which transmits heat by forced convection.
The heat transfer generated by the human body when a person is barefoot.
Radiation Examples
What is radiation? The radiation is the heat emitted by a body due to its temperature, in a process that lacks contact between bodies or intermediate fluids transported heat.
The radiation causes a body to be solid or liquid of higher temperature than another, occur immediately transfer heat to each other. The phenomenon is that of the transmission of electromagnetic waves, emitted by bodies at a higher temperature than absolute zero: the higher the temperature, the greater these waves will be.
That is what explains that radiation can only occur while the bodies are at a particularly high temperature. Next, a group of examples where radiation occurs:
The transmission of electromagnetic waves through the microwave oven.
The heat emitted by a radiator.
Solar ultraviolet radiation, precisely the process that determines the Earth’s temperature.
The light emitted by an incandescent lamp.
The emission of gamma rays by a nucleus.
The processes of heat transmission increase and decrease the temperatures of the affected bodies, but also sometimes (as exemplified by ice) are responsible for the phenomena of phase changes, such as the boiling of water in steam, or the fusion of water in ice. Engineering concentrates many of its efforts to take advantage of this possibility of manipulating the state of bodies through the transmission of heat.
Energy and Indoor Air Quality Impacts of DOAS Retrofits in Small Commercial B...RDH Building Science
Heating, ventilating and air-conditioning (HVAC) typically accounts for 30% to 50% of commercial building energy use. Small commercial buildings often use oversized and inefficient rooftop air handling units (RTUs) to provide both air conditioning and ventilation. A conversion strategy to reduce energy
consumption is the installation of a very high efficiency dedicated outdoor air system (DOAS) to provide ventilation with a separate heat pump system to provide heating and cooling. Decoupling the heating and cooling from ventilation allows for improved energy efficiency and control of space conditions. Upgrades to mechanical systems can also improve the indoor air quality (IAQ) and comfort through control of carbon dioxide (CO2) concentrations, dry bulb temperature, and relative humidity (RH).
A pilot study of eight buildings was conducted to investigate the potential benefits of replacing existing RTUs with high efficiency heat recovery ventilators (HRVs) and air source heat pumps in the Pacific Northwest. This report contains results for a subset of seven buildings for which data is available. The
building energy use before and after the conversion was determined using utility data, energy modeling and monitoring. Indoor environmental conditions were measured at hourly intervals for up to one year postconversion using CO2, temperature, and RH sensors. The data was analyzed to determine changes in energy use and IAQ before and after the conversion.
This paper presents the pilot building results pre- and post-conversion. While several factors need to be in place to ensure optimal performance and cost effectiveness, the pilot shows that replacing RTUs with DOAS systems in existing commercial buildings can both reduce energy use as well as improve indoor environmental conditions. This conversion type is viable for a wide variety of building types and scale-up of the retrofits has the potential to significantly improve a previously underserved segment of the building stock.
Presented by James Montgomery at the 15th Canadian Conference on Building Science and Technology.
Bill Gould, CTO at SolarReserve, presented at the GW Solar Institute Symposium on April 19, 2010. For more information visit: solar.gwu.edu/Symposium.html
Fine-tune your fashion supply chain for the best possible fitcfrazier3275
As quickly as fashion trends change, so must your supply chain to ensure you get the right products to the right places at the right time. Real-time insights into your inventory, supply chain, and consumers’ buying behaviors can help you optimize product availability and costs, leading to maximized customer satisfaction and revenue.
Process heat requirement constitutes a large part of global energy demand. Solar thermal harnesses heat from the sun that can be effectively used for process heat requirements, and save upto 30% cost when compared to conventional energy sources like gas, diesel, electricity etc.
HMX offers solar thermal solutions for steam generation and high-temperature hot water for a range of applications such as process heating, CIP (clean in place), pasteurization, distillation, cooking, air heating, etc., across industries and commercial establishments.
A detailed document on choosing a new solar hot water systems. The article discusses the types of solar systems available, site and installation considerations, rebates, return on investment etc.
Green buildings : Challange in Operation and MaintenanceTejwant Navalkar
The paper looks at the existing maintenance practices with some telling pictures and goes on to suggest changes in the approach to maintenance in line with the Green Building requirements.
A brief insight of what goes to make a building green is given to put the challenges in Operation and Maintenance in proper perspective.
Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis. It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power.
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interesting civil engineering topics
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Gi energy renewable energy opportunities with infrastructure projects june ...GI Energy
Installing renewable energy technologies into major infrastructure projects can provide opportunities for providing reduced CO2 savings and life cycle run costs adding a significant green element to a project..
2. Agenda
6:30 Introduction/Purpose…………………5 min……...Alan Gibson
6:35 Energy Design ……………………...15min…..….Jeremy Neven
6:55 Solar Thermal…………….………….40min……...Rick Rooney
Break……..…………15 min……
7:45 Geothermal…………….…………40 min…………Michael Tiffe
8:25 Closing……………………………..5 min ………....Alan Gibson
8:30 Networking………………………..30 min
3. Purpose
To provide more indepth knowledge of
solar thermal and geothermal renewable
clean technologies and the process to
implement that will support participant
home heating project actions
To provide points of contact and
resource assistance to participants post
workshop
4. Technical HOW TO Workshops
-Outline-
Follow - up HOW TO workshops focused on :
Home Heating : March 5 from 6:30-8:30 at SLC – Rm 01040
Home Power : March 9 at SLC from 6:30-8:30 in Rm 01040
Biomass and Conservation : March 10 from 6:30- 8:30 in Rm 01040
You will be able to :
decide which system(s) is best for your purposes
compare costs and understand more on grants
evaluate whether you want to do it yourself or
Interact one on one with qualified contractors and how to proceed with your
project
15. Site selection
1. Passive solar angles
2. System solar gains
3. Shadowing
4. Easements
5. Surface water run off
6. Rain water catchment
7. Setbacks
8. Special Considerations
9. Neighbors
16. Orientation
House orientation can cut
A/C loads by more then 1 ton
in some cases.
Facing your house in the right
direction allows for other
systems to take full
advantage of optimum sun
angles.
17. Structural
1. Solar optimization
1. Roof size
2. Roof pitch
3. Mass
4. Overhang
2. Structural loading
1. Additional weight applied by systems on the structure
2. Wind loading
3. Additional Considerations
1. Tower supports
2. Energy storage
18. Heating Systems
Should be the most efficient system
Continues to consume year after year
Needs to be designed to use energy
efficiently
Integrate other systems in the design
phase
19. Cooling Systems
1. Normally the largest electrical draw
2. Typically uses compressors to remove heat
1. True of most Geothermal and air source heat pumps as well
3. Previous considerations should be used to reduce the building loads
4. Are there natural elements that can accomplish all or part
20. Ventilation
Separate from
EXHAUST
HUMIDIFICATION
DEHUMIDIFICATION
FILTRATION
Required for the health of the home and occupants
•Negative Pressure
•Positive Pressure
•HRV
22. PROPER DESIGN
Many considerations prior to the start of
any project
Make sure the project “fits you”
Know who your dealing with and their
qualifications
Make sure all systems compliment each
other
26. Who we are
•Kingston Based Company
•We design, install, and service all types of
Solar Thermal, PV, and Wind power systems
•To Date we have designed and installed over 550 solar thermal collectors
27. Solar Energy
Two types of Solar Energy: Light and Heat
PV (Solar Electric) uses the photovoltaic effect (discovered
1839) to change solar energy into electricity (10-15%
efficient)
Solar Thermal captures the solar heat energy for water
or space heating (50-85% efficient)
28. Solar Trends
•Solar power world wide has grown over 40% per year
for the last 6 years
•Technology is advancing and the price per Kw to
produce energy by solar is dropping
•An aging conventional electricity industry coupled
with growing air quality
concerns is driving growth in solar power.
•Rising fuel prices are making solar competitive
29. Solar Thermal : Types
•SDHW = Solar Domestic Hot Water
•Combi Systems= SDHW and space heating
•Solar Air Heating Systems
•Solar Pool Heating Systems
30. Solar Thermal : Types
HEATING LOAD
DHW LOAD
SOLAR SUPPLY
COOLING LOAD
Jan Mar Jun Sept Dec
43. SDHW : Types
Things to consider:
1. Aesthetics of the system
2. Space on roof
3. Direction of roof face
4. Potential shading
5. Storage tank space
6. Pipe run location
44. SDHW and Heating combi systems
•2 typical types are Flat Plate and Evacuated Tube systems
45. SDHW and Heating combi systems
•SDHW with Space heating and pool heating
46. Solar Thermal : Types
HEATING LOAD
DHW LOAD
SOLAR SUPPLY
Jan Mar Jun Sept Dec
52. Maintenance Requirements
•SDHW systems need a glycol test every 3 years, may need to be replaced
at a cost of $100- 150 for the visit
•Pool systems will require proper draining every fall. This may require
an annual service visit if roof draining is required
53. Current Incentives
Residential:
•EcoEnergy for Homes will pay $1000 for SDHW system
•PST rebate on the purchase of any solar thermal system
•Renovation tax credit of 15% (after first $1000) up to a total of $1000
•Utilities Kingston SDHW rental program
Commercial:
•EcoEnergy for Heat will pay roughly 35 – 55% of a solar thermal system
to a maximum of $80,000 per project
55. Case Study
•2- 4 X 8 panels captures approximately 3900 Kilowatt hours of thermal
energy per year
•At 11 cents per kWh for electricity
Annual savings = $427 per year
Initial investment = $6350
Rebates available = $1000 EcoEnergy = OSTHI
$772.50 tax refund
$193.73 PST rebate
Total out of pocket cost= $4357.00
•Return on investment = 16.7%
•Payback period = 7.4 years
57. Case Study 2
8 panel pool system offsetting natural gas heated pool
58. Case Study
•8- 4 X 10 pool panels captures approximately 9510 Kilowatt hours of
thermal energy per year
•At 48 cents per cubic meter for gas
Annual savings = $763 per year
Initial investment = $4900
Rebates available = $585.00 tax refund
$147.00 PST rebate
Total out of pocket cost= $4168.00
•Return on investment = 23.7%
•Payback period = 5.0 years
61. Case Study
•1- 4 X 8 Solar Sheat panels captures approximately 2500 Kilowatt hours
of thermal energy per year
•At 48 cents per cubic meter for gas
Annual savings = $200 per year
Initial investment = $2450
Rebates available = $217.50 tax refund
$73.50 PST rebate
Total out of pocket cost= $2159
•Return on investment = 9.3%
•Payback period = 10.7 years
62. CONCLUDING REMARKS:
Solar Thermal is the most cost effective
renewable energy systems available to
the residential consumer.
Solar thermal systems are cost effective
with returns on investment of over 10%
Of the solar thermal technologies pool
heating has the best payback
65. Geo-Thermal or Geo-Exchange?
Geo-exchange systems refer to heat pump systems
connected to the earth to provide a source for energy
Date as far back as 1912
Gained significant market acceptance in the 1970’s
The 1980’s saw large uptake in installations and presently
the new grants available have seen a resurrection in
popularity.
The technology transfers heat from or to the earth/water to
provide space conditioning at greater efficiencies than a
conventional system
Maybe renewable maybe not
66. Benefits Of Geo-exchange
Low Life Cycle Cost
Lower operating and maintenance costs
Improved comfort
Small equipment size (physical)
Improved aesthetic design (no visible outdoor equipment
or visible wall penetrations)
No noisy outdoor fan, more peaceful backyard
Protected from vandalism
Increased equipment life span
Heating can be up to 400% efficient
Cooling can be up to 300% efficient
67. Disadvantages Of Geo-exchange
Higher initial installation cost
Lower supply air temperatures
Increased airflow requirements
Landscaping costs
Possible backup system needed
Circulating anti-freeze solution
68. Available Systems
•GCHP – Ground coupled Heat Pump
•is where the heat pump cycle is direct linked to a
closed ground heat exchanger buried in the soil.
•GWHP- Ground Water Heat Pump
•where one of the heat exchangers is water cooled and
the water is pumped from/to wells within the earth via
open or closed pumping.
•SWHP – Surface Water Heat Pump
•is where one of the heat exchangers is water cooled
and the water is either closed loop or open loop
pumped to/from a surface water body.
•GHP- Geothermal Heat Pump
•is a widely used term which could reference any of the
above or the water flow through buried loops.
69. Open vs Closed Loop
•Open Systems
Usually utilize surface water bodies or well water fields
More dependent on climate as water temperatures
fluctuate to a higher degree
Potential for contamination
•Closed Loop Systems
Greater flexibility in usage
Usually have higher pumps requirements
Anti-freeze is usually required
More stable loop temperature with some designs
70. Open Loop
•Advantages
Installation costs are less than
closed loop
Pumping costs are typically less
•Disadvantages
Typically limited to smaller systems
Climate conditions can limit usage
Environmental issues
Fouling is a large maintenance
issue
71. Closed Loop - Vertical
•Advantages
Requires the least amount of land
Lease amount of total piping
Can require the least amount of
pumping energy
•Disadvantages
Drilling costs are high
Back filling requires special material
& skill
Potential for heat build-up
72. Closed Loop - Horizontal
•Advantages
Trenching costs are less than
drilling costs
Heat build up is not as sensitive as
vertical loop
•Disadvantages
Requires more land
Greater ground temperature
variance
Typically more piping is required
Greater risk of piping damage
during backfilling
73. Closed Loop – Slinky/Spiral
•Advantages
Requires less land & trenching than
horizontal
Less installed cost than horizontal
•Disadvantages
Still requires more land than vertical
loops
Requires more piping than
horizontal & vertical loops
Typically higher pumping
requirements
74. Ground Temperature
Month
J F M A M J J A S O N D
92
Ground Surface
Undisturbed Ground
82 2 FT
Temperature ( F)
5 FT
72 12 FT
62
52
Green Line = Outside Air Temp
42
32
0 40 80 120 160 200 240 280 320 360
Day of the Year
75. Installation Issues
•Vertical? Horizontal? Surface
Water?
•How much space is required?
•Ground Properties
•Soil/rock type
•Ground water
•Heat exchanger Design?
•Piping/borehole layout
•Heat transfer fluid?
•Bore Hole Drilling
•Noise
•Cleanup
•Access
77. Installation Issues
•Building Code
•Permit?
•Local Bylaws?
•Drawings?
•Inspection of Work
•Certificate of Installation
•CSA C448 Standard
78. Operating Costs
Compared to the same output gas fired heating system,
the cost of operation might be reduced by 66%
79. Government Incentives
•Federal
•EcoEnergy Retrofit
•Up to $3500 for Earth energy systems (CSA-C448 compliant)
•Must have EcoEnergy audit performed
•www.ecoaction.gc.ca
•Provincial
•Ontario Home Energy Retrofit program
•Matches EcoEnergy grants
•http://www.homeenergyontario.ca/
80. Cost Calculations
•Vertical Drilling
•$15-$20 per foot
•Depth 200 to 300 feet
•5 or 6 holes required
•Horizontal Trenching
• 1200-1600 feet of piping
• 5-6 feet deep
• 2 foot wide
• 600- 800 foot trench
• $2-$3 per foot
81. Cost Calculations
•Installation costs:
$20K to $30K for a 3-4 ton system
Viewed as the primary barrier
Much higher than the new generation of high
efficiency air source heat pumps and gas furnaces
• Energy cost savings:
Most significant when replacing electric resistance or
heating oil
Marginal to no savings when compared high
efficiency air source heat pumps and gas
furnaces/AC systems
Highly dependant on the price of electricity vs natural
gas/heating oil
82. Getting Your Project Done
•Assessing Needs
•Land area? Water Source? Heat Loss/Heat Gain
•Specification of Equipment
•Acquiring Approvals
•Municipal
•Project Planning
•Engaging Contractors
•Multiple bids
•References
•Accreditation
•Follow-ups & Maintenance
•Service contract
83. Case Study
•Typical system
•High-efficiency furnace $3,600
•Hot water tank $2,000
•Central air $3,000
•Geo-exchange System
•Heat Pump $10,000
•Ground loop $16,000
•Hot Water Tank $1,500
•Operating Costs
•Typical System $2,350
•Heat Pump System $1,600
84. CONCLUDING REMARKS:
What type of system?
Higher installation costs
Need qualified contractors for grants
Long equipment lifespan
Low Life Cost
85. Closing
Purpose /products review
Feedback forms please
Further resource support requirements
Our support
86. Brought to you by:
SWITCH - The Sustainable Energy People
_____________________________