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Waverley Borough Council Committee System - Committee Document

Meeting of the Executive held on 04/10/2004
COUNCIL CHAMBER – SUMMER OVERHEATING – COMFORT COOLING PROPOSAL



Summary & Purpose
This report proposes the installation of an evaporative air cooling system for the Council Chamber to address the problem of excessive heat gain during the summer months. The cost of the installation proposed of 27,430 can be met from within the balance of funds available in the 2004/05 Asset Management Capital Programme of 22,000 for Central Offices Air Conditioning and the remaining 5,430 from the capital provision for Council Chamber refurbishment.

Quality of Life Implications
Natural Resource Use
Pollution Prevention and Control
Biodiversity and Nature
Local Environment
Social Inclusion
Safe Communities
Local Economy
Natural
Resource Use
Pollution
Prevention and Control
Biodiversity
and Nature
Local
Environment
Social
Inclusion
Safe, Healthy
and Active
Communities
Local
Economy
Positive
Positive
N/A
Positive
N/A
Positive
Positive


APPENDIX S
WAVERLEY BOROUGH COUNCIL

EXECUTIVE - 4TH OCTOBER 2004
_________________________________________________________________________
Title:

COUNCIL CHAMBER – SUMMER OVERHEATING – COMFORT COOLING PROPOSAL
[Wards Affected: All]
________________________________________________________________________
Summary and purpose:

This report proposes the installation of an evaporative air cooling system for the Council Chamber to address the problem of excessive heat gain during the summer months. The cost of the installation proposed of 27,430 can be met from within the balance of funds available in the 2004/05 Asset Management Capital Programme of 22,000 for Central Offices Air Conditioning and the remaining 5,430 from the capital provision for Council Chamber refurbishment
_________________________________________________________________________
Quality of life implications – social, environmental & economic (sustainable development):

Natural Resource Use
Pollution Prevention and Control
Biodiversity and Nature
Local Environment
Social Inclusion
Safe, Healthy and Active Communities
Local Economy
Positive
Positive
N/A
Positive
N/A
Positive
Positive

The system proposed circulates fresh clean air with a moisture content that reduces pollutants and impurities and is therefore particularly beneficial to the public, staff and members suffering from allergies and asthma.

E-Government implications:

There are no E Government implications.

Resource and legal implications:

The cost of the system proposed of 27,430 would be met from within the 2004/05 Asset Management Capital Programme provision of 22,0000 which remains for Central Offices Air Conditioning following the previously implemented scheme for air cooling on the Top Floor of the Central Offices. The balance of 5,430 would be met from within the specific capital provision for Council Chamber refurbishment. Annual maintenance costs for the proposed system of 500 would be met from within the revenue budget provision for Central Offices Maintenance and Repairs.
_________________________________________________________________________


Background

1. During the summer the Council Chamber suffers from high temperatures which cause uncomfortable conditions for the public attending meetings as well as for the members and staff present. On occasion temperatures of over 30% centigrade (C) were recorded in the chamber last year.

2. Whilst there is no current upper limit, temperatures above 30C are in excess of proposed guidelines to health and safety workplace regulations. Members of the public seated in the public gallery furthest away from any natural ventilation endure particularly uncomfortable conditions during hot spells. The high temperatures are also uncomfortable for staff and members who need to concentrate and contribute to the business of the Council at meetings which often last more than three hours without a break. 3. The cooling system proposed uses an evaporative cooling process whereby air is blown through large filter pads which are kept wet by a water distribution system. Hot air is drawn through the pads by a powerful fan and the resultant naturally cooled moist air, caused by the evaporative process, is then distributed through ducting and ventilation panels. The process is based on the natural phenomenon experienced on the coast i.e. that of refreshing breezes on hot days which are caused by the hot air moving over the sea and emerging on the coast as a cooling breeze. The proposed evaporative system would provide temperature reductions of 6-8%C over prevailing temperatures. The system would also be set up to provide six air changes per hour to provide a fresher working environment.

Proposed supplier

4. The supplier of the cooling system proposed, CoSaf Environments Ltd, is based in Farnham and is the only supplier for evaporative cooling systems currently operating in this country. Earlier this year CoSaf successfully installed the system proposed on the top floor of the Council Offices and on the grounds of both effectiveness and continuity, officers propose the same solution and supplier.

Risk of Legionella

5. Evaporative cooling does not cause legionnaires disease and it varies substantially in operation and design from the cooling towers associated with conventional air conditioning systems where the legionnella bacteria has been a significant concern. The Legionella bacteria must be transmitted as an aerosol or water droplet. However, the evaporative cooling system proposed cools the air without introducing any water droplets through aerosols and therefore is not susceptible to contamination.

Waiver of Contract procedure Rules

6. The proposed system for an evaporative office cooling system is only provided by a single supplier CoSaf Environments Ltd and it is, therefore, proposed that, in this instance, Contract Procedure Rules be waived in accordance with clause Q101(c) relating to propriety goods which can only be obtained from one contractor.


Conclusion

7. It is intended that other priority areas in the offices for air cooling would be addressed on a phased basis in future years.

Recommendation

It is recommended that approval be given to:

1. a waiver of Contract Procedure Rules under clause Q101(c) relating to propriety goods which can only be obtained from one contractor; and

2. the purchase and installation of an evaporative cooling system from CoSaf Environments Ltd at a cost of 27,430 of which 22,000 would be met from the 2004/05 Capital Programme provision for Asset Management of 75,000 for Central Offices Air Conditioning with the remaining 5,430 being met from the 2004/05 Capital Programme provision for Asset Management of 10,000 for Council Chamber refurbishment.

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Background Papers (CEx)

There are no background papers (as defined by Section 100D(5) of the Local Government Act 1972) relating to this report.

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CONTACT OFFICER:

Name: Roger Standing Telephone: 01483 523221






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