Harry E Thompson, a North Carolina Usa an engineer in 1950’s. He had a dream to develop such a solar heating system which is less expensive and accessible to everyone and lastly his dream had changed into reality. He wanted that the system should be benefited to the whole surface area of a south facing roof of his house. The invention better known as ‘Trickle Down Solar Thermal Roof’. The system consists of a corrugated metal roof covered with glass. In the basement there is a huge cold water tank was pressurized to the upper area where it was convey to ‘trickle down’ the roof was specialty design for this purpose. A hot water caused by sunlight heat from the roof was gathered in gutter and then returned to the basement accumulator tank. This alternative and useful solar heating system is still running in a large amount in the houses along the US/Canadian border.
Now Harry Thompson had bring new useful changes to the system, so now the system is more improved, more cost effective, more efficient in performance and more ability comes in DIY, because of the fruitful modification now this time he had given the name of his changed system known as ‘Modified trickle Down solar Heating System’ If we monitor the system very closely, the thermal roof we noticed that the flow of water over the steel corrugated beneath side is insulated, so that it prevent the energy loss, but unfortunately a huge amount of heat is still getting lost through the cold outer glazing surface.
If you need to get comprehensive knowledge about the reality dream of the Thompson and his invention the ‘Trickle Down System’ then it is necessary that you should know first my invention of ‘Modified Trickle Down’ solar heating system. TD and MTD are both the same system of open loop system, which both are pressurizing the pump that the water flows to the upper surface of the collector. But there are noteworthiness differences between them as follows:
Cross-Section of MTD – Collectors:
Open loop ———-Open loop.
Trickle water absorber ———Trickle water through absorber.
Glazed ——–Glazed in polycarbonate.
Unit builds up Modular build up.
Corrugated steel absorber ——–Polyester felt absorber.
Not portable ——–Portable array.
No inner film ———It has inner film.
My first MTD collector as the same such as this, but I have changed its screen with polyester felt along with a large amount of other useful and reasonable modifications. So because of these changes it is now becomes very fruitful, it is more effective, more cost effective, better in quality and more reliable than oil heating system. Over the last three years I have tested and make plentiful designs of collectors but lastly I have established and settled on here which I consider have the quality to be mentioned worthily.
Two of them have such designs that are made with a steel stud slots and one with a wood frame. If you have such an enough knowledge and skill about carpentry so the 2×8 wood collector could be set 2×12, steel stud slot are also better idea to start the work with it. But on the contrary I have recommended you to begin your work with a simple 2×8, collector. The MTD has more effective ability it pressed together to form array. Three 2×12 MTD collector pressed together. MTD collectors have been designed for the full over flow of water to the roof of the house, but don’t leave out if your roof is oriented in wrong direction. Construct the MTD Sun Shed and use MTD heating system right inside the shed.
The top and bottom 2"×2" mounting support is useful and provided and facilitate the flush mounting MTD collectors. An eight collector system would be needed four 2’×2’×9′ support screwed into the roof rafters. To position the top support uses a level for this reason, so that the mid section also works properly. This level positioning will help in the flow process of gutter water into a central for draining and cleansing it is connected with a 2" rubber T boot. If the MTD solar heating and DHW system both properly installed then there is no problem of water freezing.
Bottom End of Finished Collector with Gutter Installed:
Richard Heiliger and I, we both come into the conclusion that the people must take an advantage from the sunlight. Investment in this filed will have fruitful results. We both encourage the readers to take interest in the experiment and discovery, development of the sunlight. Dreams can be change into reality but if we take serious step for this purpose. The MTD building starter kit along with MTD instruction and video CD will help you in the construction of solar thermal application. Your dream can be adopt reality if you people take a concrete action, making research, through experiment and discovery with the help of all these idea’s you can also bring innovation in the field of solar energy so be practical to make true dreams.
The starter set is designed such a way to provide the reader enough experience with a Low cost MTD collector. The kit contains step by step construction guide book, TDM materials (2’x8′ polyester felt, two 30"x8′ sheets of polypropylene, five Berger Bros Bibs), a Trickle Down Distributor, a gutter end cap, a gutter compression support and a 3/4" L connector. The kits comes with useful directions booklet for a wood frame MTD collectors and a CD for PC (computer) with an MTD steel stud slot instruction video and a Solar Plumbing multi media shown. This CD runs on standard PC computers. You certainly need such a kit to get start your process.