Abstract
This paper presents design and fabrication of modified evaporative cooler for producing cooled air without an increase in humidity. An experimental investigation has been carried out in Ahmedabad, India, and subsequently, a mathematical model is developed for the analysis of heat and mass transfer involved during the process. The model is validated with the measured experimental data, and further, the validated model has been used to analyze the performance of the system for Ahmedabad weather conditions throughout the year. The result shows that the minimum and maximum reduced ambient temperature obtained using a modified evaporative cooling (MEC) system is 6.52–34.31 °C and the maximum temperature drop is 17.85 °C. This system is made of kraft paper and aluminum sheet and it can give a better result than the direct and indirect evaporative cooler. The air can be cooled here lower than the wet-bulb temperature without an increase in humidity, and subsequently, it is an economical solution that can provide better comfort.
Keywords
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Abbreviations
- A s :
-
Surface area (m/s)
- C :
-
Specific heat capacity at constant pressure (J/kgK)
- h :
-
Heat transfer coefficient (W/m2K)
- h m :
-
Mass transfer coefficient (m/s)
- H :
-
Enthalpy (J/kg)
- H l :
-
Latent heat of vaporization of water at 0 °C (J/kg)
- H wv :
-
Enthalpy of the water vapour at water film temperature (J/kg)
- k :
-
Thermal conductivity (W/mK)
- \( \dot{m} \) :
-
Mass flow rate (kg/s)
- t :
-
Temperature (K)
- W :
-
Humidity ratio (kg/kg of dry air)
- \( \dot{W}_{\text{evap}} \) :
-
Water evaporation rate (kg/s)
- a:
-
Average
- db:
-
Dry bulb
- dp:
-
Dew point
- in:
-
Inlet
- l:
-
Wall
- out:
-
Outlet
- p:
-
Primary air
- s:
-
Supply air
- w:
-
Working air
- wb:
-
Wet bulb
- w_d:
-
Dry working air
- wf:
-
Water film
- wv:
-
Water vapour
- Ɛ :
-
Effectiveness
- ρ :
-
Density (kg/m3)
References
Zhao X, Li JM, Riffat SB (2008) Numerical study of a novel counter-flow heat and mass exchanger for dew point evaporative cooling. Appl Therm Eng 28:1942–1951
Riangvilaikul B, Kumar S (2010) An experimental study of a novel dew point evaporative cooling system. Energy Build 42:637–644
Riangvilaikul B, Kumar S (2010) Numerical study of a novel dew point evaporative cooling system. Energy Build 42:2241–2250
Jradi M, Riffat S (2014) Experimental and numerical investigation of a dew-point cooling system for thermal comfort in buildings. Appl Energy 132:524–535
Heidarinejad G, Moshari S (2015) Novel modeling of an indirect evaporative cooling system with cross-flow configuration. Energy Build 92:351–362
Duan Z, Zhan C, Zhao X, Dong X (2016) Experimental study of a counter-flow regenerative evaporative cooler. Build Environ 104:47–58
Khalid O, Butt Z, Tanveer W, Rao HI (2017) Design and experimental analysis of counter-flow heat and mass exchanger incorporating (M-cycle) for evaporative cooling. Heat Mass Transfer 53:1391–1403
Liu Y, Li JM, Yang X, Zhao X (2018) Two-dimensional numerical study of a heat and mass exchanger for a dew-point evaporative cooler. Energy 168:975–988
Wang L, Zhan C, Zhang J, Zhao X (2019) Optimization of the counter-flow heat and mass exchanger for M-Cycle indirect evaporative cooling assisted with entropy analysis. Energy 171:1206–1216
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Lata, M., Gupta, D.K. (2021). Experimental Investigation and Simulation of Modified Evaporative Cooling System. In: Kalamkar, V., Monkova, K. (eds) Advances in Mechanical Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-3639-7_52
Download citation
DOI: https://doi.org/10.1007/978-981-15-3639-7_52
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-15-3638-0
Online ISBN: 978-981-15-3639-7
eBook Packages: EngineeringEngineering (R0)