MHS provides the remedy for low emissions at hospital

The low energy consumption and emissions of Ultramax boilers and Gemini calorifiers are being exploited in the Cotman Centre of Norwich & Norfolk University Hospital to provide space heating and domestic hot water. The 2-storey centre houses the radiology academy, which trains doctors in diagnostic imaging such as X-rays, CT and MRI scans, and the hospital’s pathology department. Consultant Integrated Building Services of Cambridge specified three 300 kW Ultramax floor-standing boilers and three Gemini 500 high-recovery calorifiers. A key feature in the low emissions of Ultramax boilers is the downward-firing pre-mix, water-cooled burner, which achieves precise mixing of gas and air. Because system water circulates inside the burner, the combustion temperature is 1200 to 1300°C. This is lower than the normal 1500°C and reduces NOx emissions to a yearly average figure of less than 32 mg/kWh. Heat output can be modulated to 25% of full output. Gemini high-performance calorifiers use the tank-in-tank system. The domestic hot water is heated and stored in a stainless-steel vessel within an indirectly heated primary tank. This system provides a very large surface area for heat exchange, which achieves high performance and rapid recovery and also eliminates the cool zone where bacteria can breed.

Related links:

• www.mhsboilers.com