CPD one of the most important features, and what makes continuous ow the preferred option for many applications is the ability of some instantaneous water heater models to constantly provide temperature accurate hot water with a precision of up to 1C. Table 1 (previous page) shows us a comparative analysis between 2 continuous ow heaters and a storage tank water heater that are supplying a laundry. Based on a load requirement of 120L and a usage of 10 wash cycles per day, you can see that not only is the continuous ow more efcient but is also able to supply the required volume of water in half the time. It also doesnt have to worry about replenishing storage or any standing losses. This results in a lower consumption, less carbon produced and money saved every year. Storage, at least in the form of a separate vessel, does have its place however. It provides a good option to meet peak demand when continuous ow heaters may not meet the requirements. In this case, the optimal setup would be a continuous ow connected to a buffer vessel. The system would regenerate during demand dips as usual and so this combination would allow for a virtually limitless maximum ow rate. Conclusion The benets of temperature precise The benets of temperature precise hot water are many and in a world where issues regarding hygiene, bacteria or emissions are being even more heavily scrutinised, water supplied by continuous ow water heaters are surely part of the solution. Some continuous water heaters have a proprietary capability that enables them to deliver temperature accurate hot water at temperatures ranging up to 85 degrees, securing best practice against the aforementioned HSE guidance as well as eliminating storage and pipework losses. Being able to reliably provide water at these temperatures not only serves to properly disinfect the items in question but gives you constant peace of mind. As mentioned before, these systems also have the ability to modulate, with turn down ratios of up to 13:1. For example, if a heater has a maximum output of 58.3kW, it can potentially modulate down to a minimum of 4.4kW. This huge difference results in a signicant reduction in energy consumption and therefore emissions as it is not constantly operating at maximum power. With all this in mind, they are able to provide optimum performance and operational efciency, some of which is displayed in Table 1 and Figure 1 (previous page). Bibliography Bockmuhl, D. P., Schages, J., & Rehberg, L. (2019). Laundry and textile hygiene in healthcare and beyond. Owen, L. L. (2020). The role of textiles as fomites in the healthcare environment: a review of the infection control risk. PeerJ, 35. For more details on RINNAI products visit 80 www.rinnaiuk.com November 2020 www.cibsejournal.com Advertisement Feature p77-80.CIBSEMagNov20.indd 80 20/10/2020 13:03