Abstract
Air-to-air heat exchangers play a crucial role in mechanical equipment, due to potential primary energy savings both, in the case of commercial properties and economic zones. This paper studies computational fluid dynamics (CFD) simulation in a rotary regenerator achieving a capacity of 90 ton by heating ventilation air conditioning systems The modelling is done using the commercial code ANSYS FLUENT ©. The operating parameters like rotational speed, porosity of mesh and dimensions of rotary regenerator like length, diameter were studied and compared with literature. Effects of variation of pressure, velocity and temperature at different sections of the rotary regenerator which accounts for the effectiveness of rotary regenerator and the percentage increase in coefficient of performance (COP) of HVAC plant are discussed.
This is a preview of subscription content, log in via an institution to check access.
Abbreviations
- ρ :
-
Density (kg/m3)
- σ k :
-
Prandtl-Schmidt number for k
- t :
-
Time (s)
- K :
-
Turbulence kinetic energy (m2/s2)
- ϵ :
-
Dissipation rate of turbulent kinetic energy (m2/s3)
- x :
-
Horizontal displacement (m)
- u, v, w :
-
Velocity (m/s)
- µ :
-
Molecular viscosity (Pa s)
- C :
-
Friction coefficient
- µ ς :
-
Eddy viscosity (Pa s)
- S :
-
Mean strain rate tensor
- G k :
-
Destruction of turbulent kinetic energy
- G b :
-
Destruction of turbulent dissipation
- V :
-
Volume (m3)
- Ʈ :
-
Stress, internal energy per unit mass (m2/s2)
- \( \frac{{V^{2} }}{2} \) :
-
Kinetic energy per unit mass (m2/s2)
- K :
-
Thermal conductivity (energy equation) (W/mK)
- T :
-
Local temperature (K)
- P :
-
Pressure (Pa)
- F :
-
Force (N)
References
Maclaine-Cross, I.L. and Banks, P.J., “Coupled heat and mass transfer in regenerators – Predictions using an analogy with heat transfer”; International Journal of Heat and Mass Transfer, Vol. 15, No. 6, pp. 1225–1242 (1972).
Abdulmajeed Al Ghamdi, S., “Analysis of air to air rotary energy wheels”; Dissertation to Russ College of Engineering and Technology, Ohio University, (2006).
SandiraAlagic, Nikola Stosic, Ahmed Kovacevic and Indira Buljubasic, “Numerical analysis of heat transfer and fluid flow in rotary regenerative air preheaters”; Journal of Mechanical Engineering 517–8, 411–417(2005).
Sercan OZ Bay, “Thermal Analysis of Stirling Cycle Regenerator”; Thesis submitted to the Graduate School of Natural and Applied Sciences of The Middle-East Technological University, (2011).
Swanepeol, DC, Kroger, DG, Rotary regenerator design theory and optimization, R and D Journal, Vol. 12, No. 3 (1996).
Stefano De Antonellis, Manuel Intini, Cesarl Maria Joppolo and Calogero Leone, “Design optimization of heat wheels”; Energies 2014, 7, 7348–7367, (2014).
Porowski, M. and Szczechowiak, E.,, Inference of longitudinal conduction in the matrix on effectiveness of rotary heat regenerator used in air conditioning, Heat Mass Transfer, 43: 1185–1200. (2007).
Holmberg, R. B.. Combined heat and mass transfer in regenerators with hygroscopic materials, Journal Heat transfer, 101, 205–210, (1979)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer Science+Business Media Singapore
About this paper
Cite this paper
Mahesh, S., Jayaraman, B., Madhumitha, R. (2017). Analysis of Air-to-Air Rotary Regenerator for HVAC Systems Using CFD. In: Bajpai, R.P., Chandrasekhar, U. (eds) Innovative Design and Development Practices in Aerospace and Automotive Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-1771-1_49
Download citation
DOI: https://doi.org/10.1007/978-981-10-1771-1_49
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-1770-4
Online ISBN: 978-981-10-1771-1
eBook Packages: EngineeringEngineering (R0)