### Abstract

A MATLAB program using finite difference technique is investigated to predict the distribution of air stream parameters as well as desiccantsolution parameters inside the parallel plate absorber. The present absorber consists of 14 parallel plates with a surface area per unit volume ratio of 80 m^{2}/m^{3}. Calcium chloride as a liquid desiccant flows through the top of the plates to the bottom while the air flows through the gap between the plates making it a cross flow configuration. The model results show the effect of desiccant mass flow rate on the performance of the dehumidifier (moisture removal rateand the effectiveness). The results show that the maximum temperature and humidity ratio differences of the air are 2.56 °C and 11 g/Kg with a maximum solution mass flow rate of 160 g/s. The maximum temperature and minimum concentration differences of solution in the direction flow of solution are 3.185 °C and 0.34 % with a maximum solution mass flow rate of 160 g/s. The moisture removal rate increases rapidly with solution flow rate from 1.41 to 2.196 g s^{−1}, but the moisture removal stagnates at high desiccant solution mass flow rates. The effectiveness achieves an increase of 0.39-0.66 when the solution mass flow rate increases from 30 to 160 g s^{−1}.

Original language | English |
---|---|

Title of host publication | Progress in Sustainable Energy Technologies Vol II: Creating Sustainable Development |

Publisher | Springer International Publishing |

Pages | 649-667 |

Number of pages | 19 |

ISBN (Print) | 9783319079776, 9783319079769 |

DOIs | |

Publication status | Published - 1 Jan 2014 |

### Fingerprint

### Keywords

- Effectiveness
- Finite difference
- Liquid desiccant
- Moisture removal

### ASJC Scopus subject areas

- Energy(all)

### Cite this

*Progress in Sustainable Energy Technologies Vol II: Creating Sustainable Development*(pp. 649-667). Springer International Publishing. https://doi.org/10.1007/978-3-319-07977-6_43

**Computer simulation of heat and mass transfer in a cross flow parallel-plate liquid desiccant-air dehumidifier.** / Mohammad, Abdulrahman T.; Mat, Sohif; Sulaiman, M. Y.; Sopian, Kamaruzzaman; Al-Abidi, Abduljalil A.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

*Progress in Sustainable Energy Technologies Vol II: Creating Sustainable Development.*Springer International Publishing, pp. 649-667. https://doi.org/10.1007/978-3-319-07977-6_43

}

TY - CHAP

T1 - Computer simulation of heat and mass transfer in a cross flow parallel-plate liquid desiccant-air dehumidifier

AU - Mohammad, Abdulrahman T.

AU - Mat, Sohif

AU - Sulaiman, M. Y.

AU - Sopian, Kamaruzzaman

AU - Al-Abidi, Abduljalil A.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - A MATLAB program using finite difference technique is investigated to predict the distribution of air stream parameters as well as desiccantsolution parameters inside the parallel plate absorber. The present absorber consists of 14 parallel plates with a surface area per unit volume ratio of 80 m2/m3. Calcium chloride as a liquid desiccant flows through the top of the plates to the bottom while the air flows through the gap between the plates making it a cross flow configuration. The model results show the effect of desiccant mass flow rate on the performance of the dehumidifier (moisture removal rateand the effectiveness). The results show that the maximum temperature and humidity ratio differences of the air are 2.56 °C and 11 g/Kg with a maximum solution mass flow rate of 160 g/s. The maximum temperature and minimum concentration differences of solution in the direction flow of solution are 3.185 °C and 0.34 % with a maximum solution mass flow rate of 160 g/s. The moisture removal rate increases rapidly with solution flow rate from 1.41 to 2.196 g s−1, but the moisture removal stagnates at high desiccant solution mass flow rates. The effectiveness achieves an increase of 0.39-0.66 when the solution mass flow rate increases from 30 to 160 g s−1.

AB - A MATLAB program using finite difference technique is investigated to predict the distribution of air stream parameters as well as desiccantsolution parameters inside the parallel plate absorber. The present absorber consists of 14 parallel plates with a surface area per unit volume ratio of 80 m2/m3. Calcium chloride as a liquid desiccant flows through the top of the plates to the bottom while the air flows through the gap between the plates making it a cross flow configuration. The model results show the effect of desiccant mass flow rate on the performance of the dehumidifier (moisture removal rateand the effectiveness). The results show that the maximum temperature and humidity ratio differences of the air are 2.56 °C and 11 g/Kg with a maximum solution mass flow rate of 160 g/s. The maximum temperature and minimum concentration differences of solution in the direction flow of solution are 3.185 °C and 0.34 % with a maximum solution mass flow rate of 160 g/s. The moisture removal rate increases rapidly with solution flow rate from 1.41 to 2.196 g s−1, but the moisture removal stagnates at high desiccant solution mass flow rates. The effectiveness achieves an increase of 0.39-0.66 when the solution mass flow rate increases from 30 to 160 g s−1.

KW - Effectiveness

KW - Finite difference

KW - Liquid desiccant

KW - Moisture removal

UR - http://www.scopus.com/inward/record.url?scp=84948087227&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84948087227&partnerID=8YFLogxK

U2 - 10.1007/978-3-319-07977-6_43

DO - 10.1007/978-3-319-07977-6_43

M3 - Chapter

SN - 9783319079776

SN - 9783319079769

SP - 649

EP - 667

BT - Progress in Sustainable Energy Technologies Vol II: Creating Sustainable Development

PB - Springer International Publishing

ER -