Simulation of intermittent thermal compression processes using adsorption technology. (English) Zbl 1269.93007
Summary: This paper presents a dynamic model to simulate the adsorption-desorption processes associated with intermittent heat pump systems. This simulation plays an important role in sizing the adsorption systems for various types of applications in the design stage. A mathematical model that is based on the control volume approach was first developed and then discretized using the finite difference implicit scheme. The equations for the conservation of mass, momentum, and energy in the bed were derived for high-pressure and low-pressure segments, including the adsorbate (refrigerant), the adsorbent (Linde 13X), and the vessel wall. A pseudo-homogeneous model for the compression system was adopted. The numerical results that describe the adsorption-desorption history were obtained. It was found that the amount of the refrigerant recovered in the desorption process at the end of the cyclic operation is smaller than the amount adsorbed during the adsorption process. This indicates that the time for the regeneration process should be longer than the time for the adsorption process in order to raise the sieve temperature. In order to compare the simulated results with experimental data, numerical values for the heat transfer coefficients were theoretically evaluated. To assure the stability of the simulated results, the incremental time of system operation is kept equal or less than the value obtained from the minimum stability requirement. The simulated results of the temperature distribution history during system operation are in good agreement with the conducted experimental results, which led to the conclusion that the model can be used as an effective tool during the design stage and for the system development.
MSC:
| 93A30 | Mathematical modelling of systems (MSC2010) |
| 93C95 | Application models in control theory |
| 93C20 | Control/observation systems governed by partial differential equations |
| 35Q93 | PDEs in connection with control and optimization |
References:
| [1] | Miles, D. J.; Shelton, S. V., Design and testing of a solid-sorption heat-pump system, Appl. Thermal Eng., 16, 389-394 (1996) |
| [2] | Suda, S., Experimental evaluation of heat pumps performance in connection with metal hybrid properties, J. Less Common Metals, 104, 211-222 (1984) |
| [3] | Yanoma, A.; Yoneta, M.; Nitta, T.; Okuda, A., The performance of a large scale hybrid heat pump, JSME Int. J. ser. II, 31, 741-747 (1988) |
| [4] | Nagel, M.; Komasaki, Y.; Uchida, M.; Suda, S.; Matsubara, Y., Operating characteristics of a metal hybrid heat pump for generating cool air, J. Less Common Metals, 104, 307-318 (1984) |
| [6] | Srivastava, N. C.; Eames, I. W., A review of adsorbents and adsorbates in soild-vapour adsorption heat pump systems, Appl. Thermal Eng., 18, 707-714 (1998) |
| [7] | Buzanowski, M.; Yang, R. T., Approximation for intraparticle diffusion rates in cyclic adsorption, Chem. Eng. Sci., 46, 2589-2598 (1991) |
| [8] | Chahbani, M. H.; Tondeur, D., Mass transfer kinetics in pressure swing adsorption, Separation Purification Technol., 20, 185-196 (2000) |
| [9] | Pons, M.; Laurent, D.; Meunier, F., Experimental temperature fronts for adsorptive heat applications, Appl. Thermal Eng., 16, 395-404 (1996) |
| [11] | Ruthven, D. M., Principles of Adsorption and Adsorption Processes (1984), Wiley: Wiley New York |
| [12] | Wang, R. Z.; Wu, J. Y.; Xu, Y. X.; Wang, W., Performance researches and improvements on heat regenerative adsorption refrigerator and heat pump, Energy Conversion Manage., 42, 233-249 (2002) |
| [13] | Pons, M.; Poyelle, F., Adsorption machines with advanced cycles for heat pumping or cooling applications, Int. J. Refrigeration, 22, 27-37 (1999) |
| [14] | Meunier, F., Solid sorption cycles for cooling and heat pumping applications, Appl. Thermal Eng., 18, 715-729 (1998) |
| [15] | Cacciola, G.; Restuccia, G., Progress on adsorption heat pumps, Heat Recovery Systems & CHP, 14, 409-420 (1994) |
| [16] | Wang, R. Z.; Jia, J. P.; Zhu, Y. H.; Teng, Y.; Wu, J. C.; Wang, Q. B., Study on a new solid adsorption refrigeration pair: active carbon fiber-methanol, ASME J. Solar Energy Eng., 119, 214-218 (1994) |
| [17] | Wang, R. Z.; Xu, Y. X.; Wu, J. Y.; Li, M.; Shou, H. B., Research on a combined adsorption heating and cooling system, Appl. Thermal Eng., 22, 603-617 (2002) |
| [18] | Wang, R. Z.; Wu, J. Y.; Xu, Y. X.; Wang, W., Performance researches and improvements on heat regenerative adsorption refrigerator and heat pump, Energy Conversion Manage., 42, 233-249 (2001) |
| [19] | Dixon, A. G.; Cresswell, D. L., Effective heats transfer parameters for transient packed-bed models, AICHE J., 5, 809-819 (1986) |
| [20] | Balakrishnan, A. R.; Pei, D. C.T., Heat transfer in gas-solid packed bed systems: overall heat transfer rates in adiabatic beds, Ind. Eng. Chem. Process Des. Dev., 18, 47-50 (1979) |
| [21] | Yamamoto, Y., Adsorption and heat transfer characteristics in Krypton-85 storage cylinder filled with adsorbent, J. Nucl. Sci. Technol., 18, 856-862 (1981) |
| [22] | Chahbani, M. H.; Labidi, J.; Paris, J., Modeling of adsorption heat pumps with heat regeneration, Appl. Thermal Eng., 24, 431-447 (2004) |
| [23] | Zheng, W.; Worek, W. M.; Nowakowski, G., Performance of portioned-bed sorption heat pump systems, J. Enhanced Heat Transfer, 2, 283-293 (1995) |
| [24] | Dixon, A. G.; Cresswell, A. G.D. L., Theoretical prediction of effective heat transfer parameters in packed beds, AICHE J., 4, 663-676 (1979) |
| [25] | Sun, L. M.; Feng, N. Y.; Pons, N. Y.M., Numerical investigation of adsorptive heat pump systems with thermal wave heat regeneration under uniform-pressure conditions, Int. J. Heat Mass Transfer, 40, 281-293 (1997) · Zbl 0925.76361 |
| [26] | Sward, B. K.; Le Van, M. D.; Meunier, F., Adsorption heat pump modeling: the thermal wave process with local equilibrium, Appl. Thermal Eng., 20, 759-780 (2000) |
| [27] | Pons, M., Analysis of the adsorption cycles with thermal regeneration based on the entropic mean temperatures, Appl. Thermal Eng., 17, 615-627 (1996) |
| [28] | Taminot-Telto, Z.; Critoph, R. E., Adsorption refrigerant using monolithic carbon-ammonia pair, Int. J. Refrigeration, 20, 146-155 (1997) |
| [29] | Zheng, W.; Worek, W. M., Effect of design and operating parameters on the performance of two-bed sorption heat pump systems, J. Energy Resources Technol., 117, 67-74 (1995) |
| [30] | Zheng, W.; Worek, W. M.; Nowakowski, G., Effect of operating conditions on the performance of two-bed closed-cycle solid-sorption heat pump systems, J. Solar Energy, 117, 181-186 (1995) |
| [31] | Zheng, W.; Worek, W. M.; Nowakowski, G., Performance of multi-bed sorption heat pump systems, Int. J. Energy Res., 20, 339-350 (1996) |
| [32] | Sisson, L. E.; Pitts, D. D.R.; Donald, R., Elements of Transport Phenomena (1971), McGraw Hill: McGraw Hill New York |
| [33] | Syamlal, M.; Gidaspaw, D., Hydrodynamics of fluidization: prediction of wall to bed heat transfer coefficients, AICHE J., 1, 127-135 (1985) |
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