Whether in domestic or commercial environments, space is at a premium. Adam Ferneyhough, country director UK & Ireland at DAB Pumps, explains why correctly sizing water pumps and storage tanks for use in space constrained locations is vital, and how it can optimise system design.
The need to make the best use of available space in buildings means that efficient specification is more important than ever – something that is increasingly the case when designing and installing water pumps and storage tanks. Whether it’s a cramped plant room or a retrofit in a small loft, rightsizing pumps and tanks to be no larger or more powerful than necessary maximises efficiency, reduces waste and optimises available space.
Fit for purpose
The overspecification of pumps and storage tanks used to be common and was largely driven by the desire for high operational safety margins. This might have seemed like a sensible safeguard but often led to wasted energy, larger physical footprints and complex maintenance.
In contrast, modern system design using the latest innovations means installers can accurately determine peak demand and flow profiles. This means that solutions can be configured to meet desired performance criteria without overspecification, allowing for smaller, smarter installations that avoid inefficiencies such as unnecessary cycling, extra wear and tear, and excessive running costs.
In addition, standards such as BS EN 806 and Water Regulations Advisory Scheme (WRAS) guidance offer a framework for calculating domestic and commercial water demand, helping installers size systems correctly. These standards, along with advances in technology, have made it possible to design systems that are both compact and resilient.
Site and sound
Understanding the various water supply categories is an essential starting point. The Water Supply (Water Fittings) Regulations 1999 classify water into five categories based on potential contamination risk – ranging from good quality mains water (Category 1) to water that poses a serious health hazard (Category 5). Potable water used for drinking, cooking and bathing must be stored in tanks that maintain Category 1 water quality. This typically involves using WRAS approved materials and, where necessary, fitting backflow prevention devices to prevent contamination.
All too often attention is focused only on factors such as pressure, flow rate or capacity, while the nature of the water being pumped is overlooked. Ignoring this key consideration can lead to serious and costly issues, as if the system fails to meet compliance during inspection it may be shut down, resulting in major disruptions. More importantly, an incorrect specification could jeopardise the safety of the water supply, increasing the risk of endangering users.
When siting a water storage tank, it’s important to consider accessibility, protection from contamination, temperature control and ease of maintenance. Place tanks in well-ventilated, secure areas to enhance protection and use products with coatings or linings made of impermeable materials. Tank lids or covers must be designed to keep out insects and animals, and the tank should also shield the water from direct sunlight and heat sources. Also, ensure the lid allows for adequate ventilation and is not airtight.
Always on
Scheduled inspections and maintenance are crucial to prevent the build-up of sediment, microbial growth and pressure imbalances. However, maintaining water pumps and storage tanks in space constrained environments poses unique challenges and requires careful planning and execution to ensure safety, efficiency and minimal disruption.
All maintenance activities should comply with relevant regulations and standards. One of the key considerations is accessibility – tools, equipment and personnel must be able to reach the required location without difficulty. Safety is critical, as confined areas can pose risks such as poor ventilation and restricted movement, so it’s essential to conduct a thorough risk assessment. Additionally, in order to safely and accurately carry out any work lighting and visibility must be sufficient.
Solution provider
Storage tanks in restricted spaces should be designed to facilitate cleaning without requiring full tank removal. The UK’s water regulations and WRAS guidelines necessitate regular compliance reviews, particularly in commercial or multi-residential settings. If space constraints limit traditional maintenance methods, custom designed solutions such as slimline tanks are an option.
In hard to access places remote monitoring can prove highly effective. A sensor can provide a constant readout of the water level, volume and temperature, which is displayed on a control panel. Providing evidence that the water in a tank is continually turned over to avoid stagnation, it also provides intelligence on the condition of the water, highlighting any variances that may require quick remedial intervention.
At the same time, the latest pumps are designed for long-term reliability with minimal upkeep. For example, direct motor shaft access makes venting and maintenance easier, while separation between the motor and electronics improves safety and protects against system failures caused by overheating or condensation.
Smart approach
Ultimately, rightsizing is about intelligent system design that reflects actual need, while promoting sustainability and maximising available space. This approach is, quite rightly, becoming the norm when it comes to water pump and storage solutions and the future lies in compact, highly efficient systems that offer flexibility and reliability without compromising performance.
Image: DAB Pumps
