Published Date: Nov 22, 2011
PAINTING ROOFS CAN CUT ENERGY COSTS
Experts at a seminar were unanimously agreed that painting the roofs and build environment with white can reduce temperature in cities and can drastically cut energy consumption by lowering the energy demand. They urge on government to take subsequent measures and highlight the need to create awareness among citizens for Cool Roofs to address growing energy needs and combating climate change.
They were speaking at a special seminar on “Cool Roofs: Solar Radiation Management (SRM) Techniques to Combat Climate Change and Energy Crisis” organized by the Sustainable Development Policy Institute (SDPI) here on Monday. Abrar Malik, Assistant Chief (Buildings) National Energy Conservation Centre (ENERCON), Islamabad, Tenveer Mehmud, Former National Programme Coordinator, Clean Development Mechanism (CDM), Syed Amjad Hussain, Advisor, Climate Change and Clean Development Mechanism (CDM) and Farzana Yasmin, Project Associate, SDPI spoke at the event while Shakeel Ahmad Ramay, Senior Rsearch Associate, SDPI moderated the proceedings.
Farzana Yasmin explained that Solar Radiation Management (SRM) techniques are used to make earth more reflective by diverting incoming solar radiation. Cool Roof is one of the SRM technique that increase the reflectivity of the build environment by painting the roofs, roads and pavements with bright reflective white. This , she said, provides a cooling effect as the white roofs tropical regions absorbs about 70% less sunlight than an ordinary roof and hence counteracting the warming influence of increasing greenhouse gases. She also cited research which shows that widespread installations of cool roofs and pavements can reduce summer air temperatures in cities by 2 to 3 degrees Celsius (4 to 5 degrees Fahrenheit).
Abrar Malik said that we need to cultivate a new energy culture focusing on achieving sustainable development through conservation and efficient use of energy resources. And Solar Radiation Management (SRM) Techniques such as Cool Roofs can be a viable alternate, he added. He informed that Building Code Of Pakistan (Energy Provisions 2011) has been approved by Steering Committee would soon be finalized by Task Force of Pakistan Engineering Council. He also highlighted initiatives taken by Enercon for energy conservation such as Buildings Energy Audits, energy efficient housing improvement by roof slabs, awareness campaigns, appointment of Energy Managers and amendment in building byelaws/ regulations of Building Control Authorities & Utility Providers.
Tanveer apprised participants on clean development mechanism (CDM) in Pakistan. He explained that CDM allows industrialized countries to invest in emission reductions wherever it is cheapest globally. So there is an opportunity for developing countries like Pakistan to take measure towards cleaner environment while earning valuable resources at the same time, he added.