Development Management Policies - Direction of ... - Islington Council

3 Managing Environmental Resources
iii) Mixed-mode cooling, with local mechanical ventilation / cooling provided where required
to supplement the above measures using (in order of preference) low energy mechanical
cooling followed by air conditioning
iv) Full-building mechanical ventilation / cooling systems using (in order of preference) low
energy mechanical cooling followed by air conditioning
B. Measures at the highest possible level of the above cooling hierarchy shall be utilised to
the fullest extent possible before the next level of the hierarchy is utilised. Each successive
level shall be utilised as fully as possible before the subsequent level is utilised. The use of
technologies from lower levels of the hierarchy shall not be supported unless evidence is
provided that clearly demonstrates that technologies from higher levels of the hierarchy cannot
deliver sufficient heat control.
C. Applications for major developments and all developments above 100m 2 in the CAZ are
required to include details of temperature modelling under projected increased future
temperatures, and to demonstrate that the proposed design has maximised passive design
and passive cooling measures.
3.0.33 The UK Climate Impacts Programme 2009 projections suggest that by the 2080’s the UK
is likely to experience summer temperatures that are up to 4.2°C higher than they are
today. In dense urban areas such as Islington, the Urban Heat Island Effect
3.0.34 The Urban Heat Island Effect(UHIE) could intensify these increases leading to temperatures
that are as much as 9°C higher than the outskirts of London. Ensuring buildings are
designed and constructed to be comfortable in higher temperatures, without resorting to
energy intensive air conditioning, is crucial. This will be particularly important in the densest
parts of Islington within the Central Activity Zone (CAZ).
3.0.35 The hierarchy within the policy requires developments to incorporate measures which will
ensure adaptation to rising summer temperatures, while minimising energy intensive
cooling. Modelling of larger developments and those in the CAZ under predicted future
temperatures is required to ensure buildings are fully adapted to the changing climate.
Detailed requirements for modelling will be set out in the Sustainable Design SPD.
3.0.36 Passive design may include building orientation, shading, high levels of thermal mass,
and energy efficient lighting and appliances. Passive / natural cooling may include
maximising cross-ventilation, use of passive stack ventilation, and night-time purging.
3.0.37 Information submitted in relation to this policy may be submitted within the Design and
Access Statement, or may be submitted within a separate Sustainable Design and
Construction document.
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Islington Council Development Management Policies - Direction of Travel