Paper 8
A Paradigm Shift to Ensure Proper
Ventilation and Better IAQ - The Energy Savings and Cost Benefits of a
Dedicated Outdoor Air Approach
R Anand1, C Senthil Kumar2, P Hari
Ramakrishnan2 and G Prabhakaran2
1Department of Mechanical Engineering,
National Institute of Technology, Tiruchirappalli - 620 015, Tamilnadu,
India
2Department of Mechanical Engineering, Anna University, Chennai
- 600025, Tamilnadu, India
Abstract
An energy and cost analysis has been performed which compared a
dedicated outdoor air system (DOAS) with chilled radiant cooling panel (CRCP),
designed for an official building located in the hot and humid climate of
Chennai, India, and an existing VAV system with total energy recovery (TER).
In addition to the benefits of providing the right quantity of ventilation
all the time to maintain IAQ at the better level, as prescribed by ASHRAE
Standard 62, an annual energy savings of 20 percent was predicted when
compared with the VAV system with total energy recovery. A detailed cost
analysis shows that there is much to gain from adopting this new design
paradigm.
Key words: ventilation, indoor air quality, dedicated outdoor
unit, variable air volume, total energy recovery (TER), multiple spaces
method, cost analysis, energy benefit, hot humid climate.
References
ASHRAE: (2004), "ANSI/ASHRAE Standard 62-2004. Ventilation for
Acceptable Indoor Air Quality," ASHRAE.
ASHRAE (2001) "ANSI/ASHRAE Standard 90.1-2001, Energy Standard for
Buildings except Low-Rise Residential Buildings" ASHRAE.
Coad WJ: (1999) "Conditioning ventilation air for improved
performance and air quality", Heating Piping and Air Conditioning, 9,
pp49-56.
Janus W: (2001) "Integration of hydronic thermal transport systems
with fire suppression systems," ASHRAE Transactions, 107 (1).
Meckler G: (1986) "Innovative ways to save energy in new
buildings", Heating/Piping/Airconditioning, May.
Mumma SA: (2001) "Dedicated outdoor air in parallel with chilled
ceiling systems" Engineered Systems 18, (11), pp6-66.
Mumma SA: (2003) "HVAC - generation next", Consulting -
Specifying Engineer, pp38-43.
Mumma SA: (2003) "Decoupling OA and space thermal control,"
ASHRAE IAQ Applications, Winter, pp12-15.
Shank K and Mumma SA: (2001). "Selecting the supply air conditions
for a dedicated outdoor air system working in parallel with distributed
sensible cooling terminal equipment", ASHRAE Transactions, 107, (1),
pp562-570.
Trane: (2003) "Application guide for dedicated outdoor air
system", American Standard Inc.
|
