Chartered Institution of Building Services Engineers by open1tup


									                   DESIGN OFFICES:   ● Hull   ● Blackpool   ● Sheffield   ● Manchester   ● Bath   ● Newcastle          ● London    ● Harrogate


             “To be recognised nationally as a
          company of excellence, by embracing
             continuous improvement in
             partnership with our clients,                                                                              Tel: 0870 2 330 330
                to achieve innovation,                                                                            E-Mail:

               best value and service’”

                                                                                             Chartered Institution of Building
                                                                                                   Services Engineers
               RANGE OF SERVICES:
                                                                                                       Executive Summary
               •   Building Service Design
               •   Facilities Management
               •   Maintenance                                                                         Implementation Plan
               •   Hard & Soft FM Service                                                                    for the
                   Delivery                                                                           Carbon 60 Competition
               •   Energy Management                                                                                            IST
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               •   BREEAM Assessments                                                                                      FIN                  -

               •   Health & Safety Management


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               •   Disability Access Consultancy

               •   Handover Documentation
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               THE COMPANY:

               •   Established 1993
               •   Expanded Organically                                                           ENERGY & ENVIRONMENTAL
               •   National Coverage                                                                   MANAGEMENT
               •   400 Staff                                                                      “Closing the Loop” in Building Services
               •   Turnover £18m / annum                                                            Design and Facilities Management

                                                                                                     FS 72675

OPERATIONAL SITES: ● York ● Washington ● Chorley ● Milton Keynes ● London ● Manchester ● Leeds ● Birmingham ● Carlisle ● Nottingham ● Duxford

EXECUTIVE SUMMARY                                                                                  ‘Closing The Loop on Design
                                                                                                    and Facilities Management’


“Carbon 60 is an extraordinary molecule made from carbon atoms whose surface is built
up from hexagons and pentagons and is an example of a semi regular solid called a
truncated isosahedron.“

Like the molecule the CIBSE Carbon 60 competition and its implementation should be
“extraordinary”, not only as an example to the construction industry but as a showcase to a
wider audience demonstrating a functional and accessible approach to local and global
carbon emission reductions.

Summary of Achievements

The attached Table 2 summarises our proposals in which we have identified a total annual
reduction in carbon emissions of 64.2%, or 14,013 kgC.

Utilisation of green energy and the use of biomass boilers would increase the reduction in
carbon emissions to 100%.

Practicality, Simplicity and Functionality of Proposals

Our approach to the Carbon 60 competition and as an organisation as a whole centres on
simplicity. Simple, efficient, cost effective thinking, where form not only follows function but
also evolves as an integral component resulting in a practical, fully functional, easy to
operate and aesthetically alluring solution.

With the above in mind we have considered the following elements:

•      Good Housekeeping
•      Lighting
•      Office Equipment
•      Thermal Properties of Structure
•      Space Heating and Controls
•      Ventilation and Comfort Cooling
•      Domestic Hot Water Services
•      Renewable Energy Sources

Our recommendations for each of these elements are summarised within the attached
Table 1.

A prime example of the aesthetic consideration giving to our proposal is the siting of the
wind driven ventilation turrets on the roof of the Council Chamber. Whilst the initial reaction
would be to hide these away we would prefer to showcase them as an architectural
feature, providing a visual hue to the advances in technology CIBSE are embracing and
generating a focal interest to celebrate the reductions in carbon emissions.

The project as a whole will also have implications with regards to updating the O&M
manuals and operating procedures along with the ongoing maintenance programme in
conjunction with the requirement for staff training to ensure that the new technology is
utilised to the full and the resulting reductions in carbon emissions maximised. We have
been diligent in our proposals to select options and plant items requiring minimum
maintenance. Maintenance schedules for the new items would be prepared as part of our
holistic approach.

The programme of works would identify adequate time and budget for the training of the
staff, in conjunction with the appropriate manufacturers, and preparing a simple user

guide. The user guide would not only provide an overview of the technical details of the
                                                                                               ‘Closing The Loop on Design
plant and services for the Facilities Management Team or Building Manager but would             and Facilities Management’
also give general non-technical information to enable the user to operate the building
efficiently and effectively. In brief the User Guide would contain building services
information, emergency information, energy and environmental strategies, water use,
transport facilities, materials and waste policy, re-fit and re-arrangement considerations,
reporting provision, training and demonstrations, any links and references and a
miscellaneous section for any further relevant information.

To expand the training theme beyond the staff we propose an education programme for
those using the building. This would showcase the Carbon 60 Competition and the results
achieved whilst highlighting the commitment CIBSE has to reducing carbon emissions
and it’s awareness of our global environment. A small display area could be utilised to
display drawings and photographs and a description of the measures implemented and
the philosophy behind the carbon emission reduction process. Ultimately CIBSE may be
able to inspire others, sewing the seeds of global carbon reduction in the minds of the
visitors and hopefully generating further positive action.

Innovation, Inspiration and Aesthetics

When looking at each of the energy consumers and potential areas for savings including,
heating, lighting, ventilation and comfort cooling, domestic hot water, renewables, thermal
properties of the structure and good house keeping, we have primarily focused on
practicality and functionality, with form and aesthetics close to our hearts. A reduction in
carbon emissions of over 60% was not in itself the most challenging aspect of the
competition. Rather, selecting appropriate and functional technology for this showcase
venture that would demonstrate and highlight the accessibility and practicality of reducing
carbon emissions on both a local and global platform. There are so many state of the art
developments that we could have incorporated, including wind turbines, ‘sunpipes’
ground source heat pumps and fuel cells etc. However, the practicality and capital cost of
operating such systems make them less than viable to the average building owner or
occupier. Instead we have focused on existing and readily available technology, utilising it
in a truly innovative, practical and effective way.

The use of a wind driven natural ventilation system on the Council Chamber utilises a new
and innovative twist on proven technology, the principle originating 2000 years ago in the
Middle East. There has been a great deal of research into the effectiveness of wind driven
ventilators. In particular the building performance analysis completed by BRE on the
University of Hertfordshire concluded that the installed wind driven natural ventilation
system units delivered up to 960l/s of fresh air at moderate wind speeds, that the air
entered through the prevailing wind segments of the terminals and exhausted through
those on the leeward side, there was no evidence of short circuiting and that night cooling
by the units provided lowered temperatures by up to 2°C without compromising security.
With the units providing both input and exhaust this lends itself to a heat recovery
application. The application of Phase Change Materials is being investigated for this
purpose and we would hope that this might be a technology we may be able pioneer on
the CIBSE installation. The BRE Natvent Group is committed to the promotion and
application of such natural ventilation projects throughout Europe.

Utilising an active solar system for the domestic hot water system supported by the space
heating boilers for periods when make up is required demonstrates our innovative yet
practical approach.

State of the art computer software would be used at the design stage. Computational fluid
dynamics would be used to model the stack driven ventilation system, utilising the open
central stair well within Delta House, to enhance the current environmental conditions.
This thermal chimney again puts a new spin on proven and historic technology, potentially
incorporated glazed facades to promote and maximise the buoyancy of the air induced
within the stack.

An increased temperature differential of 20°C would be adopted between the heating flow
                                                                                                 ‘Closing The Loop on Design
and returns on the new condensing boiler driven heating system to give maximum system             and Facilities Management’
efficiencies and condensing conditions.

Level of Carbon Reduction, Benchmarking and Further Possibilities

From an overall reduction in energy consumption and the utilisation of Carbon efficient
energy savings we can achieve a total reduction in carbon emissions of 64.2%, or 14,013

Table 2A demonstrates the effect of the proposed actions in relation to benchmarks
extracted from ECON 19. This clearly indicates that the overall building performance has
been enhanced from a current ‘Poor Performing’ building to a ‘Good Performing’ building,
achieving an overall benchmark of 110 kWh/m2.

An additional reduction is available to CIBSE should they purchase ‘green’ energy from
utility providers and utilise biomass boilers, although these savings have not been
included in our proposals. Utilisation of green energy and the use of biomass boilers
would increase the reductions in carbon emissions well beyond the 70% barrier and to the
100% mark.

Please also refer to Table 1 Summary Savings Table for a detailed build up of the items
making up the 64.2% carbon emissions along with the capital cost break down and
projected life cycle costs.

Cost and Lifecycle Planning

The capital cost of our proposals is £45,700 with a projected annual saving of £8,446
giving a combined payback period of 5.4 years. In view of the technologies being utilised,
the implementation restraints involved in maintaining two fully functional buildings during
the works and the dynamic rolling nature of the programme this is an extremely effective
pay back period and life cycle costing proposal.

Whilst the term “lifecycle” is now a commonly used term we prefer to simply refer to the
“life” of a building, looking forward at what can potentially and ultimately be achieved
rather than predicting its demise and limiting our vision of the future.

Subject to the financial status of CIBSE, Enhanced Capital Allowances can be claimed
against the proposals that further enhance the feasibility of our proposals.

Investigations have been carried out with schemes, such as Clear Skies and STREAM II
for the active solar energy and photovoltaic installations, to address the potential for grant
funding towards the installation of energy saving measures.

With the prestigious nature of this project and the kudos attached to the issue of global
carbon emission, we have found that many of the manufacturers would be prepared to
offer savings of up to 50% on their products. Whilst we have worked on the worst case
scenarios for installation costs we would hope to achieve similar discounts from
environmentally conscious Contractors who were interested in becoming associated with
the Carbon 60 project.

Flexibility, Continuity and Longevity

Clearly the proposal must remain dynamic at this stage and will continue to evolve as the
detailed design takes place, more in depth calculations are prepared and as new
technologies and applications continue to be explored. A moving proposal not only
ensures the flexibility of the scheme at all stages in it’s implementation but also allows
movement to continually push beyond the targeted 60% reduction and to explore the
boundaries of what can potentially be achieved through practical, cost effective and
accessible measures.

                                                                                              ‘Closing The Loop on Design
Our conceptual ideas and proposals were not limited to the immediate energy saving             and Facilities Management’
target, but extended beyond the initial savings to a vision of what could potentially and
ultimately be achieved. For example the thermal chimney on Delta House would be
designed to not only eliminate the need for the existing comfort cooling but would prevent
and discourage the installation of further cooling units as IT requirements possibly expand
in the future.


To be an integral part of the Carbon 60 process with CIBSE would truly be the icing on the
cake for GENEX, who recently evolved from their parent group OPERON, to create a
passionate and dedicated team of environmental engineers. The team comprises of
chartered engineers, BREEAM assessors, renewable energy experts and energy
managers all dedicated to the pursuit of sustaining our local and global environment. Our
name Global ENvironmental EXcellence epitomises the philosophy behind the company
and our approach to the Carbon 60 competition and its implementation.
                                             TABLE 1 - SUMMARY OF RECOMMENDATIONS

                                                                                               Annual               Annual     Annual
Report     Recommendation            Summary of                Other Options       Installed  Financial Simple      Energy     Carbon
Section       Category             Recommendations              Considered           Cost    savings (inc Payback   Saving     Saving
                                                                                                                                         Funding Support
                                                                                              Life Cycle  (Years)
                                                                                                                    (kWh)       (kgC)
  1.0     Good Housekeeping Awareness Campaign.                                        £100        £220    0.5         6,231      456 "Action Energy" (Free
                                Publicity/Training                                                                                    poster, stickers &
                                Housekeeping surveys                                                                                  publications)
                                Incentive Schemes
  2.0     Lighting              New Light Fittings           Sunpipes                £5,250      £1,614    3.3        17,319     2,026 Action Energy Loan
                                Reduced no. lamps.           Photovoltaic/Wind -                                                       ECA's
                                PIR/Photocell Controls       External Lighting                                                         "Lightswitch"
                                LED Display Lighting
  3.0     Office Equipment      TFT Computer Monitors        No. of Kitchens         £2,000        £917    2.2        12,945     1,515 ECA's
                                Powersave PC's               Tea Boilers                                                               Action Energy Loan
                                Networked Printers
                                Time-control machines
                                A++ Appliances
  4.0     Thermal Properties Roof Insulation                 Wall Insulation -       £2,205        £900    2.4        49,469     2,572 Action Energy Loan
                                Draught proofing             Delta House                                                               ECA's
                                Replacement Windows
  5.0     Space Heating &       Decentralise Boilers         Biomass Boilers         £7,245      £2,120    3.4        96,268     5,461 Action Energy Loan
          Controls              New Condensing Boilers                                                                                 ECA's
                                New Controls
                                VSD Pump
                                Heat Recovery
  6.0     Ventilation & Comfort "Windcatcher" vents to       Cross-flow heat        £13,700      £1,703    8.0         5,696      666 Manufacturers Grant
          Cooling               replace chillers             exchanger                                                                ECA's
                                Upgrade Controls (CO )   2                                                                            Action Energy Loan
                                Thermal Chimney
  7.0     Domestic Hot Water Decentralise                    Condensing multi-       £3,200        £467    6.8         3,420      732 Clear Skies Grant
                                Active Solar                 point heaters                                                            Action Energy Loan
                                Electric to Gas              Evacuated Tube
                                Water Efficient fittings     solar thermal
  8.0     Renewables            Photovoltaics                Wind                   £12,000        £504   23.8         5,000      585 "Stream II" Grant
                                                             Fuel Cell
                                                             Ground source heat
                                                             pumps & CHP
          TOTALS                                                                   £45,700      £8,446     5.4      191,348 14,013
                                   TABLE 2 - SUMMARY CARBON SAVINGS TABLE

                                                                 Current      Proposed     Saved        % Carbon     % of Overall
                      Proposal             Energy Source       Energy Usage Energy Usage   Carbon      Saving This     Carbon
                                                                  (kWh)         (kWh)      kgC/yr       Proposal       Saving

  2.0     Lighting Delta House                Electricity            26,441       14,407       1,408      45.5%         6.5%
  2.0     Lighting Conference                 Electricity             7,307        2,022         618      72.3%         2.8%
  3.0     Office Equipment                    Electricity            25,901       12,956       1,515      50.0%         6.9%
  6.0     Ventilation & Comfort Cooling       Electricity            11,656        5,960         666      48.9%         3.1%
  5.1     Pumps                               Electricity             9,250        2,250         819      75.7%         3.8%
  7.0     DHW (Electric)                      Electricity             7,980          912         400      42.9%         1.8%
  7.0     DHW (Solar)                     On-site Renewable                        1,824         213     100.0%         1.0%
  7.0     DHW (Gas)                              Gas                               1,824         119      44.4%         0.5%
  4.0     Thermal Properties                     Gas                 94,361       44,891       2,572      52.4%         11.8%
  5.3     Space Htg & Controls                   Gas                125,639       37,404       4,588      70.2%         21.0%
  5.3     Reclaim Heat                    Elec replacing Gas                      -1,033          54     100.0%         0.2%
  8.0     Photovoltaics                   On-site Renewable                        5,000         585     100.0%         2.7%
          Other misc small eqpt               Electricity               165          165           0      0.0%          0.0%
  1.0     Good Houskeeping Campaign           Electricity                         -2,025         237      5.0%          1.1%
  1.0     Good Houskeeping Campaign              Gas                              -4,206         219      5.0%          1.0%
          TOTALS                            Elec & Gas             308,700     117,352       14,013                   64.2%
          TOTALS                             Electricity             88,700       31,647       5,877     56.6%          26.9%
          TOTALS                                Gas                 220,000       78,881       7,338     64.1%          33.6%
          TOTALS                             Renewable                    0        6,824        798      100.0%         3.7%

Additional Options:
  8.0     "Green" Electricity Contract    Off-site Renewable                      31,647       3,703     100.0%         17.0%        81.2%
  8.0     Biomass Boilers                 On-site Renewable                       78,881       4,102     100.0%         18.8%       100.0%
                                    TABLE 2A - BENCHMARK PERFORMANCE

                                 EXISTING                          PROPOSED                           BENCHMARKS
           Type of                                                                           Good       Typical       Poor
Area                   kWh       kWh/m2   Performance    kWh       kWh/m2   Performance           2
   2       Energy                                                                          (kWh/m )    (kWh/m2)     (kWh/m2)
 (m )
1069    Electricity     88,700     83       Typical       38,471     36        Good        below 59     59-100     above 100
1069    Gas            220,000    206        Poor         78,881     74        Good        below 84     84-158     above 158
1069 Total            308,700     289        Poor       117,352     110       Good        below 142    142-258     above 258

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