The PP-R pipework’s lambda value has recently been improved to 0.023W/mK – a significant decrease over the previous polyurethane foam used. This market-leading new figure puts it at the forefront of large diameter district heating pipe performance for PP-R pipes.
Over an example length of 250m, the newly-improved pipework achieves an impressive 24% reduction in heat losses at 70/40°C flow and return temperatures compared to the previous PP-R generation. REHAU believes that this decrease in thermal efficiency makes the product ideally suited to low-carbon heat networks, which continue to enjoy growing uptake due to schemes such as the £288 million Green Heat Network Fund.