Chillers
Efficiency Standards (MEES) deadline. Forty per cent of the UK’s carbon emissions are
The chill factor C
ommercial building managers, owners and designers are under pressure to make sure they meet the upcoming Minimum Energy
from buildings and the government’s objective is a 50% reduction in emissions by 2025. To help achieve this, MEES will enforce from April 1st 2018 that commercial buildings must have an Energy Performance Certificate (EPC) of E or above. If not, it will be unlawful for landlords to let buildings to new occupiers or renew an existing tenancy. At least 18% of commercial property will not meet the mandatory criteria. What’s more, building owners who have an EPC rating of E or above, may want further clarity, as recent EPC simulations showed that 24% of buildings achieved a substantially lower rating than what was previously issued five years ago.
Preparation
This has huge consequences for the HVAC industry. With the deadline less than six months away, big decisions need to be made in order to comply with the rulings. Significant financial penalties will be issued to those who do meet the legislation, so preparation is essential.
With the MEES deadline less than six months away, big desicions need to be made in order to comply with the rulings
Therefore, it’s important to assess current equipment for air conditioning, ventilation, heating and lighting, as cooling is known to be one of the main contributors to energy usage in buildings. One way of increasing your EPC rating is to invest in the latest chiller technology. This is where both landlords and occupants need to think carefully about the replacement of cooling systems in their buildings. Chillers are not often at the foremost of most people’s thoughts when having refurbishments done due to concerns over perceived high costs. But perceptions need to change, as existing chillers can often be dismantled and taken out through present access points to ease disruption. Often, current pipework can also be used which
helps reduce replacement costs by a substantial amount.
High efficiency
Air source and water cooled chillers are refrigeration systems used to cool fluids or dehumidify air in both commercial buildings and industrial facilities.
The latest chiller technology comprises of cooling
only, heat pump and heating only models. Inverter technology is key to energy efficiency and
features in the newest chillers. An example of this, is the modular chiller from Mitsubishi Electric’s e- series range which uses two advanced DC inverter driven scroll compressors which delivers a capacity range of 8% to 100%. This ensures that the chillers do not operate at
full capacity when not required. The benefits of an inverter compressor can reduce annual energy bills by 30%, in comparison to a fixed speed or mechanically modulated compressor. Another cutting-edge concept within chiller technology is the use of U-Shaped heat exchangers. They provide a larger surface area that the more traditionally-shaped ones.
An NX chiller for outdoor installation from
Climaveneta, a group company of Mitsubishi Electric
Other advantages of the latest chillers are that
they are narrower than the conventional products, which saves valuable floor space. In some cases, up to six individual units can be connected together
14 June 2017
Advances in technology and the legislative drive towards greater energy efficiencies mean that many landlords and occupants are thinking carefully about the replacement of cooling systems in their buildings. Graham Temple of Mitsubishi Electric looks at how the latest chiller technology can improve a building’s energy performance without disrupting operations
Graham Temple of Mitsubishi Electric
www.heatingandventilating.net
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