This week we have been to the Netherlands and tested the HeatSnagger at KIWA according to the standard NEN 5128 A1:2009 which prescribes performance testing for DWHR systems for shower. The test uses a 40°C input drain water temperature, 10°C cold water temperature and two flow settings, respectively 9.2l/min and 12.5l/min. The flow is balanced […]
Third Party Testing of HeatSnagger at KIWA Read More »
We have had a great day at Ny Plast where we joined in on the production start up of the HeatSnagger. We made some final adjustments on the drain pipe. On request from several plumbers, we have changed it to a coupling in stead of just a plain 40mm pipe. This will reduce installation time and
Production start up for the HeatSnagger Read More »
From the lab: Using the setup described in one of the previous news items, we have carried out performance measurements on one of our HeatSnagger prototypes. This was done for both unbalanced and balanced setup, and for different flow rates. (For an explanation of the difference between balanced and unbalanced, please refer to our page
Performance test of the HeatSnagger heat exchanger Read More »
We have seen some interest for branding the HeatSnagger, so we decided to remove the Meander logo that was originally designed to be on the top lid. Instead we added arrows to guide installation of the unit. The arrows show how to connect the pipes to achieve counter flow of gray water and cold water.
Finalized mold design of heat exchanger Read More »
The HeatSnagger is a basic drain water heat recovery unit for a shower cabinet. The focus of the design has been a good price-performance ratio. Inside the HeatSnagger you find a 3 m copper pipe where the cold water to the shower mixer flows. It is a normal copper pipe bent in a meander
To verify the performance of the first prototypes of our DWHR product, we built a test setup in the basement of Arthur’s house. Its main components are an electric hot water tank, a shower platform and a PC based multi-channel logging tool. The heat exchanger unit is placed directly under the shower platform and connected
Before the summer we found the time right to send in our patent application to the Patent Office. It will be some time before we can anticipate the approved Patent. For now our product is «Patent Pending»
Filed for DWHR Patent Read More »
Most of the production tools for the DWHR unit are now ready. Vidar Fagereng at Ny Plast is demonstrating the principles of the two molds. In his hands he is holding the top piston mold that is needed to help push the heated plastic sheet into the bottom mold prior to applying vacuum suction to it. With the
Vacuum mold for the DWHR shower unit Read More »
The 3D model is now refined as far as we can before actually making the product. It consists of two main parts: a plastic enclosure and a copper pipe unit. The Norwegian company Ny Plast will be making the mold and do the actual vacuum forming for the meandering canal structure where the drain water
Production ready shower heat exchanger Read More »
Arthur has completed an overview of products, test results and contact information in this easy to read report. He has also taken the time to explain the basics of drain water heat recovery, including different mounting options. You will get immediate access to the Shower Heat Recovery report by signing up to our Meander DWHR
Free drain water heat recovery report Read More »
