Sustainable HVAC for Labs
Grahame E. Maisey,
Good architects design buildings to mesh with the rhythms of nature:
the hot radiance of the daytime sun, the cold black radiance of
a clear winter night and the diurnal temperature swings all profoundly
affect the building thermal systems. To produce sustainable lab
HVAC systems, we need to continue the passive energy design foundation
laid down by the architect through to the HVAC systems design.
Large outside air volumes created by the fume cupboard exhaust
air systems cause lab HVAC systems to typically use five times more
energy and require three times more maintenance than a typical office
We will discuss design strategies that can reduce energy and maintenance
by over 75% while creating high performance HVAC systems. We will
discuss the planning strategies, the integrated design methods and
the long-term maintenance planning for sustainable, high performance
Lab HVAC systems.
Our objectives are to show how you can reduce HVAC systems energy
and maintenance by over 75% while creating high performance HVAC
systems. We will discuss design strategies that allow us to gain
these types of savings and to maintain these savings throughout
the life cycle. We will discuss how to utilize renewable energy
sources effectively in order to move toward sustainability.
The findings we would present are: By adopting performance oriented
design strategies from the earliest conceptual design stage, we
can change the way lab HVAC systems are designed and particularly
how they perform. By separating the thermal requirements from the
air system, the options and opportunities for significant and sustainable
energy reduction begin to become possible. Separating the humidity
requirements from refrigeration, the option of entirely removing
refrigeration become possible.
This presentation reflects the Labs21 approach aimed at optimizing
whole building efficiency on a life-cycle basis. The goal of high
performance HVAC systems for labs is the long term efficiency and
maintainability of the systems while providing optimum indoor conditions.
Optimizing efficiency also means moving systems towards sustainability
through the effective use of renewable energy sources. This presentation
focuses on these issues.
Grahame E. Maisey,
P.E. is an expert in high performance, sustainable HVAC systems
with 40 years experience in the USA and Europe. He received a BSc
in Environmental Control Engineering from the University of Strathclyde,
Scotland in 1970 and has been on ASHRAE National Technical Committees.