dessicant evoparative cooling system

7/31/2019 dessicant evoparative cooling system

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Desiccant Evaporative Cooling (DEC)

Technology.

ATUL PATEL

ENROL.NO:110080709017


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INDEX

Introduction

Background of the invention

Technology behinds Summary of the invention

Conclusion

References


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INTRODUCTION

Desiccant cooling technology is required to

achieve the target 70% in integrated cooling,

heating, and power systems.

Desiccant cooling is a potentially clean

technology, used to condition the internal

environment of buildings and operateswithout the harmful refrigerants.


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It has the ability to provide efficient indoor

humidity and temperature control, alsoreducing the electrical energy requirement.

solar energy as input for Air conditioning, wecan resolve the both problems of Cooling

requirement and fuel consumption.


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BACKGROUND OF THEINVENTION

Warm Weather- Dehumidification & Cooling

by Convectional AC

Cold condition

Heat Pump Inherent in efficiencies of overcooling and

then reheating as per requirement

We can Manage by Desiccant AC


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TECHNOLOGY BEHINDS

For Transfering Heat & Moisture

- Regernerative devices

- Sorptive Media

We require Multiple Vessel system for Semi

Continuous process


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SUMMARY OF THE

INVENTION

Desiccant cooling is an open heat drivencycle, which uses a desiccant wheel andwheel exchanger in tandem to achieve both

cooling and dehumidification.

Desiccant materials, which absorb moisture,can be dried, or regenerated, by adding heatsupplied by the sun.


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A wheel that contains a desiccant turns

slowly to pick up humidity from incomingair and discharge that humidity to the

outdoors. Desiccant cooling can also be

used in tandem with an conventional airconditioning system in which the

desiccant removes humidity and the AC

system provides cooling, and in energy

recovery ventilators (ERV) to dehumidifyincoming fresh air in the summer.
http://www.daviddarling.info/encyclopedia/E/AE_energy_recovery_ventilator.htmlhttp://www.daviddarling.info/encyclopedia/E/AE_energy_recovery_ventilator.htmlhttp://www.daviddarling.info/encyclopedia/E/AE_energy_recovery_ventilator.htmlhttp://www.daviddarling.info/encyclopedia/E/AE_energy_recovery_ventilator.html


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Fig.3:Cycle's psychometric representation


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An air conditioning system that can be

driven by solar energy. A solar collectorused energy from the sun to evaporate

water from a desiccant fluid. The desiccant

fluid is then flows into a mass transfer

device which removes moisture from an airstream.

Electric or fuel backup can be used withthis system to regenerate the desiccant

material


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CONCLUSION

Expensive

Not as efficient as a classic installations

Better environmental impact DEC system can be effective in terms of

energy consumption and indoor comfort

Energy savings whole year operation


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REFERENCES

Miller, K.C. ; West, M.K., Solar Today; (United States);Journal Volume: 8:4

S. P. Sukhatme , Solar Energy, Mc GrawHill

Beckham and Duffie, Solar Energy ThermalProcesses

Weider, Introduction to Solar Energy ,

A.A.M. Sayigh, Solar air conditioning and refrigeration,Oxford : Pergamon Press, 1992

KAYS & LONDON,Compact heat exchangers
http://www.osti.gov/energycitations/searchresults.jsp?Author=%22Miller,%20K.C.%22http://www.osti.gov/energycitations/searchresults.jsp?Author=%22West,%20M.K.%22http://www.osti.gov/energycitations/searchresults.jsp?Author=%22West,%20M.K.%22http://www.osti.gov/energycitations/searchresults.jsp?Author=%22Miller,%20K.C.%22


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THANK YOU

dessicant evoparative cooling system

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