WATER HEATING & STORAGE
WATER BASIN TESTING FACILITIES
BRICKS & MORTAR - DRAINAGE - FILTRATION - GLASS & PAINT - GANTRY - HATCHES - HYDRODYNAMICS HISTORY - INSTRUMENTS - LABORATORY - LOGISTICS - OUR TEST TANK - PROOFING - REVIEWS - SEAVAX TEST VIDEOS - SLUICE GATE - WAVE MAKING - WIND MACHINE
PAINTING - The brick built entrance receives a coat of white paint, the rendering having been completed. The next stage is to line the underground tank with GRP and to make a temporary wooden hatch cover. Other wooden hatches to be made are to be able to service the filtration pumps. Copyright © photograph August 29 2017 Cleaner Ocean Foundation.
Where heat is stored as well as liquid, it is doubly important that there are no leaks. Otherwise you are losing valuable water and heat, where heating is expensive and our water comes from a well on site, thus supply is limited to our lifting pump capacity and the capacity of the well to replenish itself from the groundwater table.
We plan on having a laminated glass inspection cover, but for now will make a temporary door from treated timbers to match the decked floor. The whole of the underground tank is to be lined with fibreglass (Glass Reinforced Plastic = GRP) to prevent the persistent leaks that hampered experiments in the later part of 2016 and early 2017. The internal area to head height is 16 square meters. We are allowing for 17 m2 of materials for overlap.
Extraction fans will be needed during this operation to remove the styrene fumes while laminating takes place. We have rigged up a fan at the top at one side of the entrance that pushes fresh air into the tank but think that we need another on the other side of the entrance that pulls the air out - so creating a complete fresh air flow circuit - for the comfort of our laminator.
LAMINATING - We will need four 20kg drums for two layers of 900gsm chopped strand matt. Total cost, not including delivery but including VAT will be in the region of £460 pounds.
(AOC ADX-40 or Atlac 580 ACT) is a pre-accelerated thixotropic, high grade bisphenol A vinyl ester urethane
resin that combines exceptional chemical resistance and a combination of heat resistance and flexibility.
This resin also has very good handling and curing properties. 100% vinyl ester resins
are designed to work in the infusion process. Applications for these resins range from pools and spas to large
composite marine vessels.
MAT - This is what the 900gsm chopped strand mat looks like supplied on rolls.
CHOPPED STRAND MAT
The standard form of fiberglass mat used in hand lay up and when used with polyester or Vinylester resin produces strong, stiff and tough laminates for boats, water tanks, industrial and domestic applications. Resin use is approximately 2.25 times the weight of glass matting used. So, for 1 square meter of 450gm mat then 1kg of resin will be needed. For 1 sq/m of 900 mat 2kg of resin is needed and so on.
For our ultimate tanking project we will need 17 sq/m of 900gsm mat x 2 layers: 17m2 x 2kg x 2 = 68 kilograms of vinylester resin for the matt and another 2 kilograms for the surface tissue.
Wet out is complete when the laminate is almost transparent. Mat is available in 300g, 450g, 600g and 900g per meter weights.
Surface tissue is typically applied after the gelcoat is applied to a mould surface to prevent print through of the Fibreglass mat onto the finished laminate. Surface tissue can be used as the final layer in the coating of tanks to provide a resin rich surface. We will be using a lightweight, 30gm/m2, non-woven fabric at a cost of £18.
SEALING - We will need four 5kg cans to give us three good coats of this polyurethane based product for the recommended 550 gsm coverage. Total cost, not including delivery but including VAT will be in the region of £230 pounds.
G4 POLYURETHANE AS A POND/TANK SEALER
G4 pond sealer is applied to concrete ponds to prevent water from penetrating the concrete. Additionally it prevents toxic substances such as lime leaching into the pond. G4 pond sealer is polyurethane
based and can be applied directly to concrete, bricks and porous stone.
G4 Sealer, also referred to as G4 Damp Seal is a brown, translucent, polyurethane which hardens when in contact with moisture. Once applied, it will provide a tough damp-proof seal for most porous and non-porous substrates such as concrete, brick, stone or wood.
Wood sealing: An effective use of G4 Sealer can be to varnish wood for internal use. It can be used even in cases of low temperatures or high levels of humidity. It is best not to use G4 for varnishing wood which will be kept outside as it can be affected by UV light. Despite this, G4 does have a good reputation as a varnish and in terms of performance it is rated as one of the best on the market.
RENDERING - To make working on and in the underground storage tank less arduous the entrance has been smoothed out as much as is practical with a sand/cement render and rough edges ground down with a diamond head on an angle grinder. Copyright © photograph August 29 2017 Cleaner Ocean Foundation.
PRESSURE WASHED - Last year it took two volunteers a couple of hours to get the tank back to this condition. They used a bucket and industrial strength rubber gauntlets to scoop up 20 years of sludge. The aluminium ladder may get replaced by a custom built stainless steel unit. Copyright © July 11 2016, all rights reserved. You will need permission from Bluebird Marine Systems Ltd to reproduce this photograph.
HOSE PIPE - Bluebird Marine Systems filled up the underground chamber to conduct experiments in July of 2016. It took almost two days to fill the underground chamber using an ordinary hose pipe supplied from a well, via a hosepipe. Once full tt took about 25 minutes to fill up the test tank from this chamber using the Conforto VRX - and about the same time to empty the test-tank back into the storage chamber using the Mega FSF. The enormous time saving alone is cause to get this system working without leaks. Copyright © July 28 2016, all rights reserved. You will need permission from BMS Ltd to reproduce this photograph.
TYPICAL POND LINER KIT CONSISTS OF
HISTORY - A 36 horsepower National gas engine identical to this produced electricity from the site of our test tank in the early 1900s, with electric ovens and bread baking equipment in Herstmonceux village by 1913 as a result. The local pioneer, Charles de Roemer was a friend of John Hopkinson, another well known electrical engineer at the time. The main building used Swan-Edison lighting and switches many of which are preserved. Joseph Swan being the inventor of the light bulb in the UK and Thomas Edison the same in the USA. Swan and Edison worked together after a court battle where a High Court judge ordered the two competitors to work together after which a new company was set up for the collaboration.
LINKS & REFERENCE
BRICKS & MORTAR - DRAINAGE - FILTRATION - GLASS & PAINT - GANTRY - HYDRODYNAMICS HISTORY - INSTRUMENTS - LABORATORY - LOGISTICS - OUR TEST TANK - PROOFING - REVIEWS - SEAVAX TEST VIDEOS - SLUICE GATE - WAVE MAKING - WIND MACHINE
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