Performance analysis of adsorption refrigeration system using silicagel/methanol pair: experimental & analytical approaches

An adsorption refrigeration system (ARS) working on silica-gel/methanol pair has been investigated analytically and experimentally. By applying the mass balance in the adsorber bedthe mechanism of adsorption in the thermal compressor with respect to time and bed lengthwas determined. An experimental analysis was performed using a thermal gravimetric analyzer(TGA) to evaluate the mass transfer coefficient and optimum cycle time for silica-gel/methanol pair at different working temperatures. The Diffusion coefficient Ds and Activationenergy Ea for silica-gel/methanol pair were found 2.55 × 10–4 m2/s and 83.08 KJ/mol. Further,the results of variation of regeneration temperature on the performance of the system in termsof COP (Coefficient of Performance) and SCP (Specific Cooling Power) was evaluated; themaximum average theoretical COP and SCP achieved by the system was 0.5 and 102 W/kgnear about 127°C regeneration temperature.

PDF

___

[1] Chua HT, Kim CN, Chakraborty A, Nay MO, Mohamed AO. Adsorption Characteristics of Silica Gel + Water Systems. J. Chem. Eng. Data 2002;47:1177– 1181. https://doi.org/10.1021/je0255067.
[2] Freni A, Santori G, Sapienza A. Solar Powered Solid Adsorption System for Cold-Storage Applications. 16th CIRIAF National Congress.Assisi, Italy.2016.
[3] Sakoda A, Suzuki M. Fundamental study on solar-powered adsorption cooling system. J. Chem. Eng. Japan1984;17:52–57. https://doi.org/10.1252/ jcej.17.52.
[4] Berdja M, Abbad B, Yahi F, Bouzefour F, Ouali M. Design and realization of a solar adsorption refrigeration machine powered by solar energy. International Conference on Solar Heating and cooling for building and industry. Freiburg, Germany. 2013. https://doi.org/10.1016/j.egypro.2014.02.139.
[5] Liu YL, Wang RZ, Xia ZZ. Experimental study on a continuous adsorption water chiller with novel design. Int J Refrig. 2005;28:218–230. https://doi. org/10.1016/j.ijrefrig.2004.09.004.
[6] Zhong Y, Fang T, Wert KL. An adsorption air conditioning system to integrate with the recent development of emission control for heavy-duty vehicles. Energy 2011; 36:4125–35. doi.org/10.1016/j.energy.2011.04.032.
[7] Saha BB, Akisawa A, Kashiwagi T. Solar/waste heat driven two-stage adsorption chiller: the prototype. Renew. Energy 2001;23:93-101.https://doi. org/10.1016/S0960-1481(00)00107-5.
[8] Nunez T, Mittelbach W, Henning HM. Development of an adsorption chiller and heat pump for domestic heating and air-conditioning applications. Appl. Therm. Eng. 2007;27:2205–2212. https://doi. org/10.1016/j.applthermaleng.2005.07.024.
[9] Saha BB, El-Sharkawy II, Chakraborty A, Koyama S, Yoon SH, Ng KC.Adsorption Rate of Ethanol on Activated Carbon Fiber. J. Chem. Eng. Data 2006;51:1587–1592.https://doi.org/10.1021/je060071z.
[10] NiCC, San JY. Measurement of apparent solid-side mass diffusivity of a water vapor–silica gel system. Int J Heat Mass Transf2002;45:1839–1847.https:// doi.org/10.1016/S0017-9310(01)00291-5.
[11] Hamdeh N, Muhtaseb M. Optimization of solar adsorption refrigeration system using experimental and statistical techniques. Energy Convers. Manag. 2010;51:1610-1615.https://doi.org/10.1016/j. enconman.2009.11.048.
[12] Deshmukh H, Maiya MP, Murthy SS. Continuous vapour adsorption cooling system with three adsorber beds. Appl. Therm. Eng. 2015;82:380-389.https:// doi.org/10.1016/j.applthermaleng.2015.01.013.
[13] Sur A, Das RK. Development of equilibrium and dynamic models for an adsorption refrigeration system. J. environ. biotechnol. res. 2017;6:64–81.
[14] Sheikholeslami M, Ul-Haq R, Shafee A, Li Z. Heat transfer behaviour of nanoparticle enhanced PCM solidification through an enclosure with V shaped fins. Int J Heat Mass Transf 2019;130:1322-1342. https:// doi.org/10.1016/j.ijheatmasstransfer.2018.11.020.
[15] Sheikholeslami M, Ul Haq R, Shafee A, Li Z. Heat transfer simulation of heat storage unit with nanoparticles and fins through a heat exchanger. Int J Heat Mass Transf 2019;135:470–478. https://doi. org/10.1016/j.ijheatmasstransfer.2019.02.003.
[16] Dixit M, Arora A, Kaushik SC. Energy and exergy analysis of a waste heat driven cycle for triple effect refrigeration. J. Therm. Eng. 2016;2:954–961. https://doi.org/10.18186/jte.84533.
[17] Javadi MA, Hoseinzadeh S, Ghasemiasl R, Heyns PS, Chamkha AJ. Sensitivity analysis of combined cycle parameters on exergy, economic, and environmental of a power plant. J Therm Anal Calorim 2019;139:519–525. https://doi.org/10.1007/s10973- 019-08399-y.
[18] Sheikholeslami M, Ul Haq R, Shafee A, Jafaryar M, Li Z. Heat transfer of nanoparticles employing innovative turbulator considering entropy generation, Int J Heat Mass Transf 2019;136:1233–1240.https:// doi.org/10.1016/j.ijheatmasstransfer.2019.03.091.
[19] Sheikholeslami M, Ul Haq R, Shafee A, Jafaryar M, Li Z. Heat transfer and turbulent simulation of nanomaterial due to compound turbulator including irreversibility analysis, Int J Heat Mass Transf. 2019;137:1290–1300. https://doi.org/10.1016/j. ijheatmasstransfer.2019.04.030.
[20] Kurtulmus N, Bilgili M, Şahin B.Energy and Exergy Analysis of a Vapor Absorption Refrigeration System in an Intercity Bus Application. J. Therm. Eng. 2019;4:355–371. https://doi.org/10.18186/ thermal.583316.
[21] Kalla S, Arora B, Usmani J.Performance Analysis of R22 and its Substitutes in Air Conditioners. J. Therm. Eng. 2018;4:1724–1736. https://doi.org/10.18186/ journal-of-thermal-engineering.367419.
[22] Javadi MA, Hoseinzadeh S, Ghasemiasl R, Khalaji M. Optimization and analysis of exergy, economic, and environmental of a combined cycle power plant, SadhanaInd. Acad. of Scien. 2019;5:1–11. https:// doi.org/10.1007/s12046-019-1102-4.
[23] Anand Y, Gupta A, Tyagi S, Anand S.Variable Capacity Absorption Cooling System Performance for Building Application, J. Therm. Eng. 2018;4:2303- 2317. https://doi.org/10.18186/thermal.439041.
[24] Bhargav H, Ramani B, Reddy VS, Lai F. Development of semi-continuous solar powered adsorption water chiller for food preservation, J. Therm. Eng. 2018:4:2169–2187. https://doi.org/10.18186/ journal-of-thermal-engineering.434032.
[25] El-Sharkawy II, Pal A, Miyazaki T,Saha BB, Koyama S. A study on consolidated composite adsorbent for cooling application. Appl. Therm. Eng. 2016;98:1214–1220. https://doi.org/10.1016/j. applthermaleng.2015.12.105.
[26] Oertel K, FischerM. Adsorption cooling system for cold storage using methanol/silica-gel. Appl. Therm. Eng. 1998;18:773–786. https://doi.org/10.1016/ S1359-4311(97)00107-5.
[27] Buzanowski MA, Yang RT. Extended linear driving-force approximation for intraparticle diffusion rate including short times. Chem. Eng. Sci. 1989;44:2683–2689. https://doi.org/10.1016/0009- 2509(89)85211-X.
[28] Sur A, Das RK. Numerical modeling and thermal analysis of an adsorption refrigeration system, Int J. Air-Cond. Ref. 2015;23:1550033. https://doi. org/10.1142/S2010132515500339.

Başlangıç: 2015
Yayıncı: YILDIZ TEKNİK ÜNİVERSİTESİ

Arşiv