Energy production and temperature management in JHBB

Wednesday, 26 February 2014


Energy production and temperature management in JHBB

Combined heat and power plant

Using a combined heat and power plant will reduce the John Henry Brookes Building’s use of CO2 by 16%. The plant has been sized to provide the building’s heat requirements and contribute to the electrical demands of the building. Using this kind of system is also considered extremely efficient as by producing the heat and electricity on site there are fewer points where energy can be lost.

Trigeneration – the added bonus

As well as producing heat, the plant will also help cool the building.  An absorption chiller uses a refrigerant to cool the air. The refrigerant is then absorbed into another liquid before the excess plant heat is used to release the refrigerant from the other liquid so that it can continue to be part of the cooling cycle.

Absorption chiller

Building Energy Management System (BEMS)

The temperature and air quality of the John Henry Brookes Building will be managed using an automated system.  The system will control the air entering and exiting the building and will ensure that the temperature is comfortable for its users.

The system will also manage the natural ventilation system. For example, in the summer during the warm days the core temperature of the building will increase; to help maintain a cooler temperature windows will open at night to reduce the heat of the thermal mass.

The building will benchmark conditions throughout the year and ensure that the temperature is controlled in the most efficient manner. Using the data and reports that the BEMS will produce will also enable the facilities team to track the building’s performance.  This will give the team early warning signs if areas of the building start to underperform and will enable problem resolution to happen at the earliest possible point.