Abstract
Desiccant air handling processors (DAHP) driven by heat pump have become more and more popular recently due to their compact size and high efficiency. Both the cooling capacity from an evaporator and heat from a condenser are utilized in these systems. How to understand these two kinds of air dehumidification systems comprehensively is an important issue for system design and device selection. In the present chapter, DAHP driven by heat pump (using liquid desiccant or desiccant wheel) will be investigated. Operating principles of DAHP using desiccants will be introduced firstly. System design principles will be proposed with emphasis on the heat and mass transfer characteristics in DAHP. Performances of DAHP will be analyzed and approaches for performance optimization will also be proposed. It is expected that the present study will be useful to cast light on the performances of DAHP using liquid desiccant and desiccant wheel and choose an efficient air dehumidification method in the air-conditioning system.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
THUBERC (2015) Status quo of building energy consumption in China. In: 2015 annual report on China building energy efficiency. China Architecture & Building Press, Beijing, pp 1–39
Al-Alili A, Hwang Y, Radermacher R (2015) Performance of a desiccant wheel cycle utilizing new zeolite material: experimental investigation. Energy 81:137–145
Enteria N, Yoshino H, Mochida A et al (2015) Exergoeconomic performances of the desiccant-evaporative air-conditioning system at different regeneration and reference temperatures. Int J Refrig 56:81–98
Nawaz K, Schmidt SJ, Jacobi AM (2015) A parametric study on mass diffusion coefficient of desiccants for dehumidification applications: silica aerogels and silica aerogel coatings on metal foams. Sci Technol Built Environ 21:637–647
Bellemo L, Elmegaard B, Kærn MR et al (2015) Formulation and validation of a two-dimensional steady-state model of desiccant wheels. Sci Technol Built Environ 21:300–311
Chua KJ (2015) Heat and mass transfer of composite desiccants for energy efficient air dehumidification: modelling and experiment. Appl Therm Eng 89:703–716
De Antonellis S, Intini M, Joppolo CM (2015) Desiccant wheels effectiveness parameters: correlations based on experimental data. Energ Build 103:296–306
Liu XH, Jiang Y, Zhang T (2013) Key components of the THIC system: outdoor air handling methods. Temperature and humidity independent control (THIC) of air-conditioning system. Springer Press, Berlin, pp 119–153
Liu XH, Li Z, Jiang Y (2009) Similarity of coupled heat and mass transfer between air–water and air–liquid desiccant direct-contact systems. Build Environ 44:2501–2509
Liu XH, Jiang Y, Xia JJ et al (2007) Analytical solutions of coupled heat and mass transfer processes in liquid desiccant air dehumidifier/regenerator. Energ Convers Manage 48:2221–2232
Tu R, Liu XH, Jiang Y (2013) Performance comparison between enthalpy recovery wheels and dehumidification wheels. Int J Refrig 36:2308–2322
Zhang T, Liu XH, Jiang Y (2012) Performance optimization of heat pump driven liquid desiccant dehumidification systems. Energ Build 52:132–144
Zhang T, Liu XH, Jiang Y (2013) Performance comparison of liquid desiccant air handling processes from the perspective of matched properties. Energ Convers Manage 75:51–60
Bejan A (1997) Advanced engineering thermodynamics, 2nd edn. Wiley, New York
Zhang L, Liu XH, Jiang Y (2014) Exergy calculation and analysis of a dehumidification system using liquid desiccant. Energ Build 69:318–328
Liu XH, Zhang T, Zheng YW et al (2016) Performance investigation and exergy analysis of two-stage desiccant wheel systems. Renew Energ 86:877–888
Tu R, Liu XH, Jiang Y (2015) Lowering the regeneration temperature of a rotary wheel dehumidification system using exergy analysis. Energ Convers Manage 89:162–174
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer Nature Singapore Pte Ltd.
About this chapter
Cite this chapter
Zhang, T., Tu, R., Liu, X. (2017). Desiccant Air Handling Processors Driven by Heat Pump. In: Enteria, N., Awbi, H., Yoshino, H. (eds) Desiccant Heating, Ventilating, and Air-Conditioning Systems. Springer, Singapore. https://doi.org/10.1007/978-981-10-3047-5_8
Download citation
DOI: https://doi.org/10.1007/978-981-10-3047-5_8
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-3046-8
Online ISBN: 978-981-10-3047-5
eBook Packages: EnergyEnergy (R0)