CASE STUDY | IBRB LABORATORY from monitored data, is 380kWhm-2 per year. This compares with the TM54 design estimate of 294kWhm-2 per year. Its worth noting, however, that a number of energy optimisation opportunities have been identified, including modifications to control regimes, which should reduce the actual energy consumption when implemented. The energy usage patterns are particularly difficult to predict when modelling laboratories because there are so many variables affecting energy outcomes. Nevertheless, comparing the TM54 energy model with the measured energy consumption for the building is useful and the energy metering installations allow end-use comparisons. Analysis of the roof-mounted solar PV energy generation showed it was close to the design estimate. One of the benefits of being involved Decisions on final installations, such as where to locate power sockets, should be determined in agreement with end users End users have been very positive about the IBRB in the POE in the POE is the ability to compare measured energy use with predicted use. We found that some aspects of measured energy use, such as lighting and servers, are less than the TM54 energy prediction. Some other end uses, however such as hot water, cooling and auxiliary energy (fans and pumps) are more than the TM54 prediction. Undertaking real building energy analysis of the IBRB has proved beneficial in terms of learning how different engineering systems perform in practice. Further opportunities for POE on other projects will help advance skills and accuracy in predictive modelling and capacity for energy-conscious design. POE also helps identify the systems that need particular optimisation to improve energy performance. Other lessons from the POE include the vital role that engagement with end users and maintenance personnel can have during the final fix of building services and fit-out of equipment. Normally, engagement with end users takes place during the design stage, but in a science and research building, with particularly complex installations, its worth maintaining engagement with these stakeholders during procurement and delivery. Detailed decisions on final installations, such as where to locate power sockets, storage units and equipment, should be determined in agreement with end users. Another lesson is that arranging aftercare beyond handover is beneficial and should be considered. This can help resolve operational issues after the main contract is complete, including, for example, occupant issues such as optimising temperature setpoints, airflow rates and local draughts from ventilation systems. Detailed reviews of the energy use can also help identify opportunities for improving performance. Only time will tell if the IBRB delivers on those chance encounters, resulting in groundbreaking research. What is certain from the feedback, however, is that it delivers a fantastic place to work. As one occupant reported: I love it its a world-class building and will help recruit world-class people. CJ ED LUCAS is a senior associate, and ASHLEY BATESON is a director, at Hoare Lea The most sustainable e Commercial Air Source S Heat pump Titan Sky The Superior Natural Choice Air Source Inverter Heat pump Natural refrigerant (R290) Heating g Capacity: 30-200 kWMax Hot water production: +63C H Minimum Ambient:-20C SCOP: up to 4.12 Lowest Total Equivalent Warming Impact (TEWI) Unbeatable use of Primary energy thanks to Inverter technology No Ozone Layer impact & Nearly Zero Global warming potential Optimized Low Refrigerant Charge design 82 November 2022 www.cibsejournal.com CIBSE Nov 22 pp80-82 Hoare Lea life science.indd 82 21/10/2022 16:49