1. Continuous Sorption Cooling in Activated Carbon-Nitrogen Using Metal Foam as Regenerator Indranil Ghosh Cryogenic Engineering Centre, IIT Kharagpur ICEC 26 – ICMC 2016 March 7-11, 2016, Manekshaw Centre, New Delhi, India 09-03-20161

2. Introduction Thermal Compressor Adsorbent beds generate gas flow Cooling: evaporation of refrigerant Vibration free cryogenic cooling in space applications EVAPORATORCONDENSER Temperature swing adsorption Thermal compressor driven sorption cooler schematic 09-03-20162

3. Introduction Mechanical Compressor Driven System Adsorbent beds: condenser / evaporator Cooling: Desorption of gas / vapour Relatively New Development Pressure swing adsorption Mechanical compressor driven sorption cooler schematic 09-03-2016 3

4. Lacunae Complete Removal of Heat of Adsorption: Time Intensive Longer Cycle Duration: Poor Performance Use of Multiple Beds for Generating Continuous Cooling Operational Hazards: Adsorbent Bed is Connected to Heat Sink or Heat Source in Every Half Cycle 09-03-20164

5. 5 Alternative Cycle Continuous Sorption Cooling in Single Tube Schematic of solid sorption cooling in single adsorbent tube Koley S and Ghosh I, 2013 Appl. Ther. Engg 55: 33-42.

6. 09-03-20166 Experimental Results Time temperature pressure record keeping the orifice closed Time temperature pressure record keeping the orifice open Koley S and Ghosh I, 2013 Appl. Ther. Engg 55: 33-42.

7. 09-03-20167 Different Desorption Routes Koley S and Ghosh I 2016, Appl. Ther. Engg. 99 : 502-513

8. 09-03-20168 Different Desorption Routes Koley S and Ghosh I 2016, Appl. Ther. Engg. 99: 502-513

9. 09-03-20169 Energy Distribution Koley S and Ghosh I 2016, Appl. Ther. Engg. 99: 502-513

10. 09-03-201610 Regenerative Solid Sorption Cycle Ghosh I 2014, Proc. Int. Sorption Heat Pump Conf. (Maryland, USA)

11. 09-03-201611 Is it Pulse Tube Cooler ? ParametersPulse TubeSorption Cooler FrequencyHertzMili-Hertz ValveRotarySolenoid Origin of CoolingExpansion of GasDesorption TubeEmptyAdsorbent Filled FluidHeliumAdsorbate Table 1: Comparison between pulse tube and present cooling

12. 09-03-201612 Experimental Setup: Schematic

13. 09-03-201613 Experimental Setup: Pictorial View

14. 09-03-201614 Results: Foam Regenerator

15. 09-03-201615 Results: Tube Regenerator

16. 09-03-201616 Conclusions Regenerator kept inside the bed works better Orifice end temperature is falling below the ambient It is a clear indicative of the sorption heat transfer

17. 09-03-201617 THANK YOU