Energy Sector
• Green Buildings:
(i) As the Green Building Evaluation Standard (GBES) largely incorporates existing national and local building standards and regulations, especially in energy efficiency, provide appropriate incentives for buildings to be built at a higher (silver, gold, platinum) standard, rather than just the pre-requisite level.
(ii) Introduce
specific energy performance requirements for key end-users in buildings; such requirements could cover, inter alia, lighting, major appliances, air-conditioning, and water heating.
(iii) Introduce commissioning of energy systems in buildings; and (iv) Consider introducing a GBES accreditation program similar to the Leadership in Energy and Environmental Design (LEED) program in the United States. Heating/Cooling System: As the current proposed district heating system essentially reflects conventional Chinese design concepts, improve the district heating system by
considering:
(i) Using a low temperature regime for supply/return water in district heating;
(ii) Using building-level sub-stations instead of group sub-stations;
(iii) Using the district heating system for domestic hot water; and
(vi) Using CHP plants for base loads and meet peak load demand by heat only boilers.
• Renewable Energy: Examine renewable energy options to choose more cost-effective options based on lifetime costs, particularly for photovoltaic powered public lighting systems. Also, consider installing centralized solar systems in public buildings, and determine the optimal share of district heating-supplied hot water relative to solar hot water