Grundfos MAGNA3 and TPE3 pumps optimize Singapore Polytechnic University's HVAC system

Singapore – an island city country – besides being one of the most densely populated locales, is also one of the most developed areas in Southeast Asia. Ship building, electronics, electrical engineering, petrochemicals – all these sectors are flourishing. Therefore, it is not surprising that the local Nghi An Polytechnic University, whose history dates all the way back to 1963, is also experiencing rapid development. One of the most recent buildings at the campus, completed in 2014, is dubbed Block 22, and the local building authorities have certified it with a "Green Mark". An efficient HVAC system contributes to this, and as to why - BalkanEngineer.com was informed by the leading pump manufacturer Grundfos.

“Block 22 at Nghi An Polytechnic University (NP) is a mixed-use building that houses a cafeteria, a sports hall, student lounges and office space. The building installations are managed by a building management system (BMS). The HVAC installation is responsible for about 60% of the building’s total energy consumption, with an area to be cooled of approximately 6,000 m²,” Grundfos explains. In order to maintain the Green Label certification and achieve even higher energy savings, the school’s management and the Environmental and Water Technology Innovation Center (EWTCOI) decided to review the design of their HVAC system, which is based on a chilled water loop.

Compatible with EWTCOI, a team of the company undertakes modernization of the pumping systems with more modern, intelligent pumps, which regulate volume automatically for adequate load. It is expected that this will save 50% of energy for heating water and optimizing general production of the system.

At the end of the day, 15 MAGNA3 circulators and 4 TPE3 primary pumps were installed. As a result of the renovation of the pumping systems, the building ΔT was increased by 28%, and the avoidance of valves reduced the pumping power from 9.4 kW to 4.3 kW, resulting in an overall pumping energy saving of 54%.

Photo source: Grundfos Bulgaria, Grundfos