FEATURE ARTICLE

Composite adsorbents of CaCl2 and sawdust prepared by carbonization for ammonia adsorption refrigeration

  • Huashan LI 1 ,
  • Xianbiao BU , 2 ,
  • Lingbao WANG 1 ,
  • Zhenneng LU 1 ,
  • Weibin MA 2
Expand
  • 1. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • 2. Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

Received date: 03 Jun 2012

Accepted date: 21 Aug 2012

Published date: 05 Dec 2012

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg

Abstract

Composite adsorbents of CaCl2 and sawdust prepared by carbonization for adsorption refrigeration with NH3 as refrigerant are tested, and the effects of carbonization temperature on the sorption capacity and rate are analyzed. The results show that the amount of pores in the sawdust of the composite adsorbents carbonized, apart from the content of CaCl2, is the most dominant factor influencing the NH3 sorption on composite adsorbents. The optimum carbonization temperature is 700°C, which gives the maximal NH3 sorption capacity as high as 0.774 kg of NH3 per kg of the composite, and the specific cooling power is approximately between 338 and 869 W/kg with the cycle duration varying from 5 to 20 minutes. The present study demonstrates that the composite absorbent of CaCl2 and sawdust prepared by carbonization is more promising and competitive for adsorption refrigeration application.

Cite this article

Huashan LI , Xianbiao BU , Lingbao WANG , Zhenneng LU , Weibin MA . Composite adsorbents of CaCl2 and sawdust prepared by carbonization for ammonia adsorption refrigeration[J]. Frontiers in Energy, 2012 , 6(4) : 356 -360 . DOI: 10.1007/s11708-012-0207-9

Acknowledgments

This work is funded by the Innovation Programs of Chinese Academy of Sciences (Nos. 0907r7 and 0907z1) and a project from the Administration of Foreign Experts Affairs of Guangdong Province, China.
1
Rezk A R M, Al-Dadah R K. Physical and operating conditions effects on silica gel/water adsorption chiller performance. Applied Energy, 2012, 89(1): 142–149

DOI

2
Aristov Y I. Challenging offers of material science for adsorption heat transformation: A review. Applied Thermal Engineering, 2011,

DOI

3
Wang K, Wu J Y, Wang R Z, Wang L W. Composite adsorbent of CaCl2 and expanded graphite for adsorption ice maker on fishing boats. International Journal of Refrigeration, 2006, 29(2): 199–210

DOI

4
Aristov Y I, Restuccia G, Cacciola G, Parmon V N. A family of new working materials for solid sorption air conditioning systems. Applied Thermal Engineering, 2002, 22(2): 191–204

DOI

5
Fujioka K, Hatanaka K, Hirata Y. Composite reactants of calcium chloride combined with functional carbon materials for chemical heat pump. Applied Thermal Engineering, 2008, 28(4): 304–310

DOI

6
Oliveira R G, Wang R Z. A consolidated calcium chloride-expanded graphite compound for use in sorption refrigeration systems. Carbon, 2007, 45(2): 390–396

DOI

7
Batzias F A, Sidiras D K. Dye adsorption by prehydrolysed beech sawdust in batch and fixed-bed systems. Bioresource Technology, 2007, 98(6): 1208–1217

DOI PMID

8
Attan D, Alghoul M A, Saha B B, Assadeq J, Sopian K. The role of activated carbon fiber in adsorption cooling cycles. Renewable & Sustainable Energy Reviews, 2011, 15(3): 1708–1721

DOI

9
Veselovskaya J V, Tokarev M M. Novel ammonia sorbents “porous matrix modified by active salt” for adsorptive heat transformation: 4. Dynamics of quasi-isobaric ammonia sorption and desorption on BaCl2/vermiculite. Applied Thermal Engineering, 2011, 31(4): 566–572

DOI

10
Yong L, Wang R Z. Adsorption refrigeration: A survey of novel technologies. Recent Patents on Engineering, 2007, 1(1): 1–21

DOI

11
Veselovskaya J V, Critoph R E, Thorpe R N, Metcalf S, Tokarev M M, Aristov Y I. Novel ammonia sorbents “porous matrix modified by active salt” for adsorptive heat transformation: 3. Testing of “BaCl2/vermiculite” composite in the lab-scale adsorption chiller. Applied Thermal Engineering, 2010, 30(10): 1188–1192

DOI

Outlines

/