This paper is focused on a discussion of the
requirements and specifications for the
development of a design tool that can be used for
solar-optimized building design. The tool will
initially be focused on single family houses and
later on small commercial buildings. The solar
optimization process refers to optimization of form
so as to (i) capture as much solar radiation as
possible on the two main surfaces facing near south
– a façade and a suitably oriented roof section, and
(ii) to utilize as much as possible of the captured
solar energy as daylight and/or to be converted to
electricity and heat. The first requirement refers to
building form while the second refers to solar
utilization systems such as building-integrated
photovoltaics, solar thermal systems and
fenestration systems, as well as energy storage
systems. It is concluded that the developed design
tool, in order to have as much impact on the design
as possible should permit some degree of detailed
analysis at the early design stage. Two approaches
are possible – development of a customized
simulation-design tool, or utilization of detailed
simulation tool with a front end that defines most of
the required inputs from standard requirements or
rules of thumb.