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Client: Vital Energi and MSL (Mechanical Services Limited)
Project: Imperial College De-Steaming Towards Net Zero
Duration: 6 months from initial enquiry to installation
Imperial College De-Steaming Towards Net Zero
Imperial College is implementing a strategic initiative aimed at reducing its carbon footprint and emissions through a comprehensive de-steaming project. This project focuses on phasing out central steam generation, enhancing energy efficiency, and establishing a more sustainable heating system across its campus.
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Project Overview
As part of this initiative, a significant undertaking involves the removal and replacement of steam heating coils in air handling units across 20 college buildings in London. The newly designed coils operate on low-temperature hot water (LTHW) with an 80°C flow and 70°C return, which is part of the College’s transition to a decarbonized heating system.
Challenges Encountered
Limited Technical Data
The existing air handling units’ age meant that technical specifications for old steam coils were often scarce. Consequently, each steam coil had to be individually measured due to varied physical dimensions and tolerances across the units.
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Access Restrictions
Many air handling units were located in hard-to-reach areas, necessitating bespoke designs for certain coils. Some larger coils were composed of multiple sections for easier installation, while others required vertical splitting and staggered designs with pipe extensions.
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Diverse Manufacturing
Different manufacturers supplied the air handling units; this diversity created difficulties in maintaining consistent tolerances during the installation of new coils, impacting the uniformity of the project.
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On-Site Adaptations
Particularly challenging was the replacement of coils in the Chemistry Building’s air handling units. The ECE installation team had to make real-time adaptations on-site to ensure that the new coils fit within existing units without compromising their performance. This included designing and manufacturing coil cases integral to the air handling unit’s structure.
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Installation and Identification Process
To ensure clarity and organization throughout the installation, all coils were uniquely labelled with plant identification codes. A comprehensive list was created, cross-referencing these codes with the college’s existing inventory, which aided in future maintenance and tracking.
Achievements and Benefits
Despite the challenges and the complex logistics of working across multiple buildings, the project has delivered significant benefits:
Energy
Efficiency
The installation of new boilers has improved efficiency from 79% to 87%, leading to an estimated annual reduction of over 2,400 tonnes of CO2 emissions.
Removal of Steam Systems
The transition away from steam and condensate networks simplifies maintenance and enhances safety.
Safety Improvements
With the elimination of 180°C steam circulation, the College now avoids stringent compliance with pressure system regulations. The new equipment promises greater reliability and availability.
Reduced Emissions
The project will contribute to a significant cut in NOx emissions, which are linked to air quality and respiratory issues.
Enhanced System Control
More control points have been integrated into the heating system, allowing for better management and lowering of operational costs.
Asbestos Removal
As part of the safety enhancements, £1 million has been spent on asbestos removal, making the buildings safer for all occupants.
Conclusion
This ambitious de-steaming project not only represents a significant step toward decarbonization for Imperial College but also showcases impressive engineering feats and logistical planning in a challenging environment. By replacing outdated systems with modern, efficient technologies, the College is committed to leading the way in sustainability within higher education. Through continued efforts in innovation and collaboration with contractors, Imperial College is well on its way to achieving its net-zero goals.
Get in touch
Find out more. Talk to our professional team on 01634 729 690 or email sales@eceuk.com.