Final Green Bug

7/27/2019 Final Green Bug

1/12

The Archimedes Screw environmental impacts, opportunities,

and challenges as an Emergent Hydro Techonology in CANADA.

Date: 5 May 2011 Presented by: Tony Bouk VP Business Development


2/12

Archimedes Screw

1645 Hwy#3, Delhi, ON, N4B 2W6T: 519 582 8563GreenBug Energy Inc.

44

The weightof water falling

through the screw turns the

screw which turns the gear

box and generator and

produces electricity as it

turns.

The diameterof the screw

increases as the design flow

increases.

The length of the screwincreases as the head or

vertical drop increases.

How it works


3/12

Technology OverviewOur Form of Emergent Hydro

Type of Turbine ArchimedesScrew

KW Size Micro (10-100 KW) Pico (1KW 10KW) (1KW powers an average home)

Heads Head Levels of 1-10 Meters, very low but still very useful.

Flows 200 liters/ sec 6000 liters/sec (1000 lps = 1 cubic meter/sec)

Run of River water flows are not managed, naturally occurring flows are

maintained.

Application for use on small water control structures already in existence old mills sites, reservoirs, etc. Thousands across Canada. (10,000+)

45



4/12

The Archimedes ScrewThen

image

Inventedin 200 AD --- by --- Archimedes

Usedto pump water up and irrigate land

image

Still used to pump water up

Used extensively in sewage treatment plants due to

robust design

46


Now


5/12

The Archimedes Screw

image

Havebeen used in Europe for about 10 years to generate electricity.

None in Canada to date that we are aware of.

image

47


To generate electricity


6/12

Environmental IssuesSafe Fish Passage

Fish can Safely Pass through the screw (down)

image Extensive fish passage tests in the UK have conclusively demonstrated

that the large water chambers and slow rotation of the ArchimedesScrew allow fish of all sizes safe passage through the turbine. As a result,

the Environment Agency in the UK has agreed that no screening is

required.

Fish Pumps

image

In fact Archimedes screws are used as fish Pumps in the aquaculture

industry to move fish.

48


The screw does not affect the upstream passage of fish, however

it does allow safe downstream passage


7/12

Environmental IssuesEquipment related

Lower Bearing the submerged lower bearing is a water lubricated composite

that requires no grease or a sealed submersible bearing.

Upper Gearbox contains food grade oil

Protective Coating on the steel screw after application and hardening thecoating is chemically inert- potable water coatings can be used but are not in

Europe.

Sitework minimal concrete site work is necessary to install the screw beside the

existing water control structures. Existing control structures are unaffected.

Equipment is Manufactured off site because the screw is manufactured off-

site and then installed by crane beside existing water control structures,disturbance to stream beds and water flows is minimal during installation.

49



8/12

Environmental IssuesWater Resources

100% of water is returned to the water course essentially part of the water just

travels down the screw instead of over the dam

Does not increase the height of the existing water control structure

Does not affect the water level above or below the water control structure

Existing natural flows are maintained In this run of river type of installation flows

are not managed in any way. (operational range of screw down to 15% of max flow)

There is no depleted reach because the screw is installed beside the existing water

control structure and the water is returned at the base of the structure there is no

depleted reach.

Will not affect water turbidity water is pulled from top of impoundment the same

as water flowing over dam.

Will not affect the flood flow capacity of the existing water control structures

50



9/12

Opportunities NowFor the Archimedes Screw

image

51


Many sites thousands ofsmall low head sites across

Canada (10,000+ according to

Hatch)

An example to the left are

the sites located around the

GreenBug location in Delhi,Ontario.

Carbon reduction there is

the opportunity to generate

electricity in a distributed

renewable way right where it is

used and sell it to the gridunder the new FIT programs.

Using existing infrastructure

and without large transmission

lines


10/12

Existing ChallengesFacing the Archimedes Screw use on small hydro sites (1kw 100kw)

Approval time and cost relative to a small systems ability to paythese are much

smaller hydro developments than Canada is used to. They are similar in size and cost to

the numerous solar panel installations now dotting the landscape. Therefore, from a

financial standpoint we cant spend 10s of thousands of dollars or more and years on

uncertain approvals or those 10,000 + sites will never be developed in Canada.

Were going to need the equivalent ease and certainty of a building code of best

practices andbuilding permitapproval and its subsequent oversight by an inspector.

Luckily we have 10 years of European experience and research to draw on

A way forward were proposing a way forward within current policy a more adaptive

management approach which utilizes all available research, knowledge and

experience with Archimedes screws to form a series of Building code or Best practice

checklists, with a focus on installation and post construction monitoring, with policy and

best practices adapting as we go forward.

52



11/12

Small Archimedes Screw 53


See full video tour at www.greenbugenergy.com/testsitevideo1.wmv & www.greenbugenergy.com/testsitevideo2.wmv


12/12

1645 Hwy#3, Delhi, ON, N4B 2W6T: 519 582 8563

GreenBug Energy Inc.

Final Green Bug

Documents

Transcript of Final Green Bug