Both in the design and the operational stage of a drinking water installation or drinking water distribution network it is essential to understand, respectively, the prospective and the actual water demand. The design should embody the right balance between energy use and cost, on the one hand, and comfort (sufficient pressure, at the right temperature) and health (good water quality) on the other. In the case of an operating drinking water installation or drinking water distribution network, an understanding of actual water demand is required to interpret pressure and water quality measurements. In addition, a good understanding of water discharge makes it possible, for example, to define where and when energy and nutrients can be most efficiently recovered.
KWR has taken all these requirements into account in Water-Use Info. The tool provides a remarkably good prediction of water demand and water discharge, both in terms of quantity and quality. It can be used for a series of scenarios in the design and operational management of water distribution installations and distribution networks, thus increasing efficiency. Water-Use Info is part of the Watershare Suite of tools.
Understanding water demand and water discharge
Water-Use Info helps to understand local residential and non-residential drinking water demand without the need for water flow measurements.
The tool sheds light on all aspects of water demand and discharge, both in terms of quantity (total use volume and maximum water flows at the fixture level), and of quality (quality requirements for potable and non-potable water, and temperature, quality and temperature of the discharged water). These aspects can be viewed in Water-Use Info for a variety of scenarios; for example, for different demographics, such as varying household compositions, or for different technical developments in water-using appliances, which might use more or less water, or even draw on other sources such as rainwater.
At the heart of the Water-Use Info tool are the SIMDEUM® drinking water demand pattern generator and the SIMSEM® water discharge model, both developed by KWR. These tools generate a set of possible demand and discharge patterns that will provide you with clear insight and enable you to extract the most suitable parameters to help you in designing or operating an installation or network. We can assist in determining the input parameters for the tool, duly adapted to your local circumstances. We can also help in interpreting the results and translating them into design parameters; or we can apply them in hydraulic and water quality models.
Water-Use Info benefits:
- Understanding of water use over the course of the day, broken down by end-use – how much water is needed, and when, for what purpose (e.g., toilet flushing, showering, consumption).
- Understanding of required water quality, and the quality of discharged water over the course of the day.
- Insight into quantitative and qualitative water demand in the design stage of the drinking water installation and distribution network.
- Insight into quantitative and qualitative water discharge for the recovery of thermal energy and nutrients from wastewater.
- Insight into quantitative and qualitative water demand and discharge when matching water demand with alternative sources of water, such as recycled water and rainwater.
- Insight into quantitative and qualitative water demand in the operating stage of the drinking water distribution network.
Design rules for self-cleaning networks and drinking water installations
Dunea uses SIMDEUM® to determine design rules for a self-cleaning network. The tool helps the water company accurately estimate the maximum water demand for 10-200 connections for several types of customers.
The Dutch Building Services Knowledge Centre (ISSO) applies the SIMDEUM® simulation results in setting design parameters for hot and cold water installations for hotels, offices and nursing homes. ISSO issues normative publications on the design of drinking water installations in homes and non-residential buildings. The new publication, ISSO 55, was issued in 2015. This is also referred to in the water worksheets.