Abstract
Adsorption cycles can be used for thermally driven heat transformation applications such as heat pumps or chillers. A major challenge in building such devices is the design of the adsorbent heat exchanger (Ad-HX). Two main design criteria are discussed here: the coefficient of performance (COP), relating the useful heat or cold with the energetic expenses, and the (volume or mass) specific cooling or heating power (SCP/SHP). Addressing the aim of designing an adsorbent heat exchanger, the article proposes a two-step procedure. The first step is the analysis of the COP, which is determined by the thermophysical properties of the adsorbent material and the working fluid, the temperature levels of the process, and the mass ratio between active adsorbent and heat exchanger material. Promising configurations reach a required COP and can be specified more detailed in a second step by estimating the power density. A simplified design approach taking the chain of heat and mass transfer resistances into account is presented, and examples of recently developed innovative adsorbent heat exchangers are shown.
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Abbreviations
- \({\text{A}}\) :
-
Adsorption potential (J/g)
- \(c_{{{\text{p}},{\text{ad}}}} /c_{\text{p,s,dry}} /c_{{{\text{p}},{\text{HX}}}} /c_{{{\text{p}},{\text{v}}}}\) :
-
Specific heat capacity of the adsorbate (ad)/the dry adsorbent (s,dry)/the heat exchanger (HX)/the vapor (v) (J/gK)
- \(C_{\text{s}} /C_{\text{fin}} /C_{\text{tb}}\) :
-
Capacity of the adsorbent layer (s), the heat exchanger fin (fin), and the heat exchanger tube (tb) (J/g)
- \(d_{\text{s}}\) :
-
Adsorbent layer thickness (m)
- \(\Delta G_{\text{g}}\) :
-
Difference in Gibbs free energy (J/g)
- \(h_{{{\text{s}},{\text{fin}}}}\) :
-
Heat transfer coefficient between adsorbent (s) and metal surface (fin) (W/m2K)
- \(\Delta h_{\text{s}}\) :
-
Loading-dependent adsorption enthalpy (J/g)
- \(\Delta \bar{h}_{s}\) :
-
Mean adsorption enthalpy (J/g)
- \(\Delta h_{{{\text{v}} }}\) :
-
Specific enthalpy of evaporation or condensation (J/g)
- \(k_{\text{LDF}}\) :
-
Linear driving force coefficient (1/s)
- \(m_{\text{s}}\) :
-
Dry mass of the adsorbent (G)
- \(m_{\text{HX}}\) :
-
Mass of the heat exchanger (G)
- M :
-
Molar mass (g/mol)
- \(p_{{}}\) :
-
Pressure (Pa)
- \(p_{\text{ch}}\) :
-
Vapor pressure of the chamber (Pa)
- \(p_{\text{cnd}}\) :
-
Condensation pressure (Pa)
- \(p_{\text{evp}}\) :
-
Evaporation pressure (Pa)
- \(p_{\text{s}}\) :
-
Pressure of the adsorbent layer (s) (Pa)
- \(p_{\text{sat}} \left( T \right)\) :
-
Evaporation pressure of a given temperature (Pa)
- \(Q_{\text{evp}}\) :
-
Latent heat of evaporation (J)
- \(Q_{\text{cnd}}\) :
-
Latent heat of condensation (J)
- \(Q_{\text{ads}}\) :
-
Latent heat of adsorption (J)
- \(Q_{\text{des}}\) :
-
Latent heat of desorption (J)
- \(\dot{Q}_{\text{s}}\) :
-
Sorptive heat flow (W)
- \(Q_{{{\text{sens}}, {\text{ads}} \to {\text{des}}}}\) :
-
Sensible heat of the adsorbent material, accumulated between desorption and adsorption temperature level (J)
- \(Q_{{{\text{sens}}, {\text{des}} \to {\text{ads}}}}\) :
-
Sensible heat of the adsorbent material, released between desorption and adsorption temperature level (J)
- \(Q_{{{\text{sens}},{\text{cnd}} \to {\text{ev}}}}\) :
-
Sensible heat released between condensation and evaporation (J)
- \(R_{{}}\) :
-
Universal gas constant (J/mol K)
- \(R_{\text{ref}}\) :
-
Reference quantity
- \(t_{{}}\) :
-
Time (s)
- \(t_{\text{cycle}}\) :
-
Cycle time (s)
- \(T_{{}}\) :
-
Temperature (K)
- \(T_{\text{eqi}}\) :
-
Equilibrium temperature (K)
- \(T_{\text{fin}}\) :
-
Temperature of the fin (lamella) (K)
- \(T_{\text{h}}\) :
-
High temperature of the adsorption cycle (K)
- \(\Delta T_{{{\text{h}},{\text{m}}}}\) :
-
Difference between the desorption temperature (T h) and the adsorption temperature (T m) (K)
- \(T_{\text{in}}\) :
-
Inlet temperature of the heat transfer fluid (K)
- \(T_{\text{l}}\) :
-
Low temperature of the adsorption cycle (K)
- \(T_{\text{m}}\) :
-
Medium temperature of the adsorption cycle (K)
- \(\Delta T_{{{\text{m}},{\text{l}}}}\) :
-
Difference between the adsorption temperature (T m) and the evaporation temperature (T l) (K)
- \(T_{\text{out}}\) :
-
Outlet temperature of the heat transfer fluid (K)
- \(T_{\text{sat}}\) :
-
Saturation temperature (K)
- \(T_{\text{s}}\) :
-
Temperature of the adsorbent layer (s) (K)
- \(\left( {UA} \right)_{\text{Ad-HX}}\) :
-
Effective heat and mass transfer coefficient of the Ad-HX (W/K)
- \(\left( {UA} \right)_{{{\text{s}},{\text{fl}}}}\) :
-
Heat transfer coefficient between the adsorbent layer (s) and the heat transfer fluid (fl) (W/K)
- \(\left( {UA} \right)_{\text{Ad-HX}}^{ - 1}\) :
-
Effective heat and mass transfer resistance of the Ad-HX (K/W)
- \(\left( {UA} \right)_{\text{fin,tb}}^{ - 1}\) :
-
Conductive heat transfer resistance of the fin (K/W)
- \(\left( {UA} \right)_{\text{mt,eff}}^{ - 1}\) :
-
Mass transfer equivalent resistance of the working fluid (K/W)
- \(\left( {UA} \right)_{\text{s,fin}}^{ - 1}\) :
-
Contact resistance between the adsorbent layer (s) and the metal surface (fin) (K/W)
- \(\left( {UA} \right)_{\text{tb,fl}}^{ - 1}\) :
-
Convective heat transfer resistance to the heat transfer fluid (fl) (K/W)
- \(V\) :
-
Volume (m³)
- \(W\) :
-
Adsorbed volume (cm3/g)
- \(X\) :
-
Mass ratio of the working fluid and the dry adsorbent material (g/g)
- \(X_{\text{eqi}}\) :
-
Equilibrium loading (g/g)
- \(\Delta X\) :
-
Loading difference between maximum and minimum loading, e.g. \(\Delta X = X_{ \hbox{max} } - X_{ \hbox{min} }\) (g/g)
- \(X_{ \hbox{max} }\) :
-
Maximum loading of an adsorption cycle (g/g)
- \(X_{ \hbox{min} }\) :
-
Minimum loading of an adsorption cycle (g/g)
- \(\Delta\) :
-
Difference
- \(\lambda_{{{\text{s}},{\text{eff}}}}\) :
-
Effective heat conductivity of the adsorbent layer (s) (W/m K)
- \(\mu_{\text{ad}}\) :
-
Chemical potential of the adsorbed phase (J/g)
- \(\mu_{\text{liq}}\) :
-
Chemical potential of the liquid phase (J/g)
- \(\rho_{\text{liq}} \left( T \right)\) :
-
Liquid phase density (g/cm³)
References
Andersen O, Meinert J, Studnitzky T, Stephani G, Kieback B (2012) Highly heat conductive open-porous aluminium fibre based parts for advanced heat transfer applications. Mat.-wiss. u. Werkstofftech 43(4):328–333. doi:https://doi.org/10.1002/mawe.201200949
Aristov YI (2013a) Experimental and numerical study of adsorptive chiller dynamics. Loose grains configuration. Appl Therm Eng 61(2):841–847. https://doi.org/10.1016/j.applthermaleng.2013.04.051
Aristov YI (2013b) Challenging offers of material science for adsorption heat transformation: a review. Appl Therm Eng 50:1610–1618. https://doi.org/10.1016/j.applthermaleng.2011.09.003
Aristov YI, Glaznev IS, Girnik IS (2012) Optimization of adsorption dynamics in adsorptive chillers. Loose grains configuration. Energy 46(1):484–492. https://doi.org/10.1016/j.energy.2012.08.001
Bathen D, Breitbach M (2001) Adsorptionstechnik. Springer, Berlin, New York
Bauer J, Herrmann R, Mittelbach W, Schwieger W (2009) Zeolite/aluminum composite adsorbents for application in adsorption refrigeration. Int J Energ Res 33(13):1233–1249. https://doi.org/10.1002/er.1611
Bendix P (2016) Experimental assessment of performance and COP as a function of adsorbent to heat-exchanger-mass ratio. In: IVth international symposium on innovative materials for processses in energy systems 2016. Taormina, Sicily, Italy, 25 Oct 2016
Bendix PB, Henninger SK, Henning H-M (2016) Temperature and mechanical stabilities and changes in porosity of silicone binder based zeolite coatings. Ind Eng Chem Res 55(17):4942–4947. https://doi.org/10.1021/acs.iecr.6b00558
BINE Information Service (2015) Heating with gas adsorption heat pumps
BINE Information Service (ed) (2016) Doubling the power density with metal fibres. Available online at http://www.bine.info/newsuebersicht/news/mit-metallfasern-die-leistungsdichte-erhoehen/, checked on 10/4/2017
BINE Projektinfo (2005) Heizen mit Zeolith-Heizgerät
Bonaccorsi L, Proverbio E, Freni A, Restuccia G (2007) In situ growth of zeolites on metal foamed supports for adsorption heat pumps. J Chem Eng Jpn/JCEJ 40(13):1307–1312. https://doi.org/10.1252/jcej.07WE174
Calabrese L, Bonaccorsi L, Proverbio E (2012) Corrosion protection of aluminum 6061 in NaCl solution by silane–zeolite composite coatings. J Coat Technol Res 9(5):597–607. https://doi.org/10.1007/s11998-011-9391-5
Chahbani MH, Labidi J, Paris J (2004) Modeling of adsorption heat pumps with heat regeneration. Appl Therm Eng 24(2–3):431–447. https://doi.org/10.1016/j.applthermaleng.2003.08.012
Daßler I, Mittelbach W (2012) Solar cooling with adsorption chillers. Energ Proceedia 30:921–929. https://doi.org/10.1016/j.egypro.2012.11.104
Dawoud B (2010) Water Vapor Adsorption on small and full scale zeolithe coated adsorbers: a comparison. Proceedings IMPRES 2010. https://doi.org/10.3850/978-981-08-7614-2
Dawoud B (2013) Water vapor adsorption kinetics on small and full scale zeolite coated adsorbers; a comparison. Appl Therm Eng 50(2):1645–1651. https://doi.org/10.1016/j.applthermaleng.2011.07.013
Dawoud B (2014) On the development of an innovative gas-fired heating appliance based on a zeolite-water adsorption heat pump; system description and seasonal gas utilization efficiency. Appl Therm Eng 72:323–330. https://doi.org/10.1016/j.applthermaleng.2014.09.008
Dubinin MM, Astakhov VA (1971) Description of adsorption equilibria of vapors on zeolites over wide ranges of temperature and pressure. In Gould RF (ed) Advances in chemistry, vol 102. American Chemical Society, pp 69–85
Do DD (1998) Adsorption analysis: equilibria and kinetics. Imperial College Press
Erdem-Senatalar A, Tatlıer M, Ürgen M (1999) Preparation of zeolite coatings by direct heating of the substrates. Microporous Mesoporous Mater 32(3):331–343. https://doi.org/10.1016/S1387-1811(99)00128-6
Frazzica A, Füldner G, Sapienza A, Freni A, Schnabel L (2014) Experimental and theoretical analysis of the kinetic performance of an adsorbent coating composition for use in adsorption chillers and heat pumps. Appl Therm Eng 73(1):1022–1031. https://doi.org/10.1016/j.applthermaleng.2014.09.004
Freni A (2012a) Heat powered cycles 2012. Experimental testing of a coated adsorber. With assistance of Salvatore Santamaria, Luigi Calabrese, Andrea Frazzica, Alessio Sapienza, Lucio Bonaccorsi, Edoardo Proverbio, Giovanni Restuccia. [England]: HPCconference
Freni A (ed) (2012b) Experiemental testing of a coated adsorber. Heat Powered Cycles Conference, Alkmaar, Netherland, 10–12 Sept
Freni A (2015) Characterization of zeolite-based coatings for adsorption heat pumps. Springer, Cham (SpringerBriefs in applied sciences and technology)
Freni A, Maggio G, Cipitì F, Aristov YI (2012a) Simulation of water sorption dynamics in adsorption chillers. One, two and four layers of loose silica grains. Appl Therm Eng 44:69–77. https://doi.org/10.1016/j.applthermaleng.2012.03.038
Freni A, Sapienza A, Glaznev IS, Aristov YI, Restuccia G (2012b) Experimental testing of a lab-scale adsorption chiller using a novel selective water sorbent “silica modified by calcium nitrate”. Int J Refrig 35(3):518–524. https://doi.org/10.1016/j.ijrefrig.2010.05.015
Freni A, Frazzica A, Dawoud B, Chmielewski S, Calabrese L, Bonaccorsi L (2013) Adsorbent coatings for heat pum** applications. Verification of hydrothermal and mechanical stabilities. Appl Therm Eng 50(2):1658–1663. https://doi.org/10.1016/j.applthermaleng.2011.07.010
Freni A, Bonaccorsi L, Calabrese L, Caprì A, Frazzica A, Sapienza A (2015) SAPO-34 coated adsorbent heat exchanger for adsorption chillers. Appl Therm Eng 82:1–7. https://doi.org/10.1016/j.applthermaleng.2015.02.052
Füldner G (2015) Stofftransport und Adsorptionskinetik in porösen Adsorbenskompositen für Wärmetransformationsanwendungen. Dissertation. Albert-Ludwigs-Universität, Freiburg
Füldner G, Laurenz E, Schwamberger V, Schmidt F, Schnabel L (2012) Simulation of adsorption cycles in adsorption heat pumps: detailed heat and mass transfer compared to lumped parameter modelling. Conf Proc Heat Powered Cycles
Graf S, Lanzerath F, Sapienza A, Frazzica A, Freni A, Bardow A (2016) Prediction of SCP and COP for adsorption heat pumps and chillers by combining the large-temperature-jump method and dynamic modeling. Appl Therm Eng 98:900–909. https://doi.org/10.1016/j.applthermaleng.2015.12.002
Gurgel JM, Klüppel RP (1996) Thermal conductivity of hydrated silica-gel. Chem Eng J Biochem Eng J 6(12):133–138. https://doi.org/10.1016/0923-0467(96)80020-0
Henninger SK (2007) Untersuchungen von Neuen Hochporösen Sorptionsmaterialien für Wärmetransformationsanwendungen - Investigations on novel highporous sorption materials with regard to heat transformation applications. PhD Thesis. University of Freiburg, Freiburg. Fakultät für Mathematik und Physik
Henninger SK, Jeremias F, Kummer H (2012) Janiak C (2012) MOFs for use in adsorption heat pump processes. Eur J Inorg Chem 16:2625–2634. https://doi.org/10.1002/ejic.201101056
Henninger SK, Ernst S-J, Gordeeva L, Bendix P, Fröhlich D, Grekova AD et al. (2016) New materials for adsorption heat transformation and storage. Renew Energ. doi:https://doi.org/10.1016/j.renene.2016.08.041
Jeong J, Nyung Kim C, Youn B, Saeng Kim Y (2004) A study on the correlation between the thermal contact conductance and effective factors in fin–tube heat exchangers with 9.52 mm tube. Int J Heat Fluid Flow 25(6):1006–1014. doi:https://doi.org/10.1016/j.ijheatfluidflow.2004.03.005
Jeong J, Kim CN, Youn B (2006) A study on the thermal contact conductance in fin–tube heat exchangers with 7 mm tube. Int J Heat Mass Transf 49(7–8):1547–1555. https://doi.org/10.1016/j.ijheatmasstransfer.2005.10.042
Jeremias F, Fröhlich D, Janiak C, Henninger SK (2014) Advancement of sorption-based heat transformation by a metal coating of highly-stable, hydrophilic aluminium fumarate MOF. RSC Adv 4(46):24073. https://doi.org/10.1039/c4ra03794d
Kummer H, Füldner G, Henninger SK (2015) Versatile siloxane based adsorbent coatings for fast water adsorption processes in thermally driven chillers and heat pumps. Appl Therm Eng 85:1–8. https://doi.org/10.1016/j.applthermaleng.2015.03.042
Lanzerath F (2013) Modellgestützte Entwicklung von Adsorptionswärmepumpen. Aachen: Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen (Aachener Beiträge zur Technischen Thermodynamik, 3)
Mahdavikhah M, Niazmand H (2013) Effects of plate finned heat exchanger parameters on the adsorption chiller performance. Appl Therm Eng 50(1):939–949. https://doi.org/10.1016/j.applthermaleng.2012.08.033
Meunier F (2013) Adsorption heat powered heat pumps. Appl Therm Eng. doi:https://doi.org/10.1016/j.applthermaleng.2013.04.050
Núñez T, Henning HM, Mittelbach W (1999) Adsorption cycle modeling: characterization and comparison of materials. In: Schweigler C (ed) Proceedings of the international sorption heat pump conference 24–26 Mar 1999, Munich, Germany. ZAE Bayern, Munich, Germany, pp 209–217
Pino L, Aristov Y, Cacciola G, Restuccia G (1997) Composite materials based on zeolite 4A for adsorption heat pumps. Adsorption 3(1):33–40. https://doi.org/10.1007/BF01133005
Restuccia G, Freni A, Maggio G (2002) A zeolite-coated bed for air conditioning adsorption systems. Parametric study of heat and mass transfer by dynamic simulation. Appl Therm Eng 22(6):619–630. https://doi.org/10.1016/S1359-4311(01)00114-4
Riffel DB, Wittstadt U, Schmidt FP, Nunez T, Belo FA, Leite AP, Ziegler F (2010) Transient modeling of an adsorber using finned-tube heat exchanger. Int J Heat Mass Transf 53(7):1473–1482
Schicktanz M (2013) Dynamische Modellierung einer Adsorptionskälteanlage unter besonderer Berücksichtigung des Einflusses von Temperaturfluktuationen. Dissertation. Technische Universität Berlin, Berlin. Fakultät III - Prozesswissenschaften
Schnabel L (2009) Experimentelle und numerische Untersuchung der Adsorptionskinetik von Wasser an Adsorbens-Metallverbundstrukturen. Dissertation. TU Berlin
Schnabel L, Tatlier M, Schmidt F, Erdem-Şenatalar A (2010) Adsorption kinetics of zeolite coatings directly crystallized on metal supports for heat pump applications (adsorption kinetics of zeolite coatings). Appl Therm Eng 30(11–12):1409–1416. https://doi.org/10.1016/j.applthermaleng.2010.02.030
Schwamberger V (2016) Thermodynamische und numerische Untersuchung eines neuartigen Sorptionszyklus zur Anwendung in Adsorptionswärmepumpen und -kältemaschinen. Dissertation KIT Karlsruhe. Available online at URN: urn:nbn:de:swb:90-598689
Shimooka S, Oshima K, Hidaka H, Takewaki T, Kakiuchi H, Kodama A et al (2007) The evaluation of direct cooling and heating desiccant device coated with FAM. J Chem Eng Jpn 40(13):1330–1334. https://doi.org/10.1252/jcej.07WE193
Stefan J, Marcus W (2005) Schichtverbund und seine Herstellung. Applied for by Sortech Ag on 8/10/2005. Patent no. DE 102005038044 A1
Tang D, Li D, Peng Y, Du Z (2010) A new approach in evaluation of thermal contact conductance of tube–fin heat exchanger. Appl Therm Eng 30(14–15):1991–1996. https://doi.org/10.1016/j.applthermaleng.2010.05.001
van Heyden H, Munz G, Schnabel L, Schmidt F, Mintova S, Bein T (2009) Kinetics of water adsorption in microporous aluminophosphate layers for regenerative heat exchangers. Appl Therm Eng 29(8–9):1514–1522. https://doi.org/10.1016/j.applthermaleng.2008.07.001
Verein Deutscher Ingenieure (2010) VDI heat atlas, 2nd edn. Springer, Berlin, London (VDI-buch)
Wittstadt U (2017) Entwicklung einer Gasadsorptionswärmepumpe mit einem aufkristallisierten Adsorptionswärmeübertrager und einem neuartigen Verdampfer/Kondensator-Apparat (ADOSO). Gemeinsamer Abschlussbericht: TIB
Wittstadt U, Füldner G, Laurenz E, Warlo A, Große A, Herrmann R et al (2016) A novel adsorption module with fiber heat exchangers. Performance analysis based on driving temperature differences. Renew Energ. doi:https://doi.org/10.1016/j.renene.2016.08.061
Wittstadt U, Füldner G, Andersen O, Herrmann R, Schmidt F (2015) A new adsorbent composite material based on metal fiber technology and its application in adsorption heat exchangers. Energies 8(8):8431–8446. https://doi.org/10.3390/en8088431
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Schnabel, L. et al. (2018). Innovative Adsorbent Heat Exchangers: Design and Evaluation. In: Bart, HJ., Scholl, S. (eds) Innovative Heat Exchangers. Springer, Cham. https://doi.org/10.1007/978-3-319-71641-1_12
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