Study on the Equilibrium Point of Heat and Mass Transfer between LiCl Desiccant and Vapor Air Solar in Air Conditioning System
- Alternative Title
- 염화리튬 건조제와 태양열 공조 시스템의 최적화를 위한 수증기
- Abstract
- The liquid solar air conditioning system is introduced as alternative solution to control air condition and to save electrical energy consumption. The heat and mass transfer performances of dehumidifier/regenerator in liquid solar air conditioning system are influenced by air and desiccant condition. The application of this system, the thermal energy from the sun and inlet air are unable to control, but operation parameter of other components such as pump, fan and sensible cooling unit are able to control.
The equilibrium point of heat and mass transfer is the liquid desiccant and inlet air conditions, where the desiccants are started humid/dehumidify inlet air. By knowing equilibrium point of heat and mass transfer, the optimal desiccant conditions suitable for certain air condition are funded. This present experiment study is investigated the equilibrium point heat and mass transfer in various air and desiccant condition. The benefit of equilibrium point heat and mass transfer will be helpful in choose and design proper component to optimize electrical energy consumption.
- Issued Date
- 2010
- Awarded Date
- 2010. 2
- Type
- Dissertation
- Keyword
- Abstract
- Publisher
- Pukgyong National Universiy[Sukmaji Indro Cahyono]
- Affiliation
- Department of Refrigeration and Air-Conditioning Engineering
- Department
- 대학원 냉동공조학과
- Advisor
- Prof. Choi Kwang Hwan
- Table Of Contents
- Acknowledgements i
Abstract vi
Nomenclature xii
List of figures xv
List of Photographs xiv
List of Tables xvii
Chapter 1. Introduction
1.1 Background 1
1.2 Review of the previous studies. 6
1.2.1 Principle of liquid-desiccant dehumidification/regeneration process 8
1.3 Objectives of the study. 9
1.4 Benefit of the Research. 11
1.5 Outline of the present study 13
Chapter 2. Calculation theory
2.1 Psychometrics chart 17
2.2 Calculation of mass transfer from air side 18
2.3 Calculation of heat transfer from air side. 21
2.4 Calculation of heat and mass transfer in circulate air room. 22
Chapter 3. Experiment apparatus and method
3.1 The methods of removing moisture from the air 26
3.2 Experiment apparatus 27
3.2.1 Selection of Sorbent Solution 27
3.2.1.1. Desiccant Applications 29
3.2.1.2 Desiccant Cycle 30
3.2.1.3 Types of Desiccant. 35
3.2.1.4 Adsorption Behavior. 41
3.2.1.5 Desiccant Life. 43
3.2.1.6 Desiccant in Present Study. 44
3.2.2 Selection of packed materials . 46
3.2.3 Sensible cooling unit. 49
3.2.4 Packed towers and desiccant storage tank 50
3.2.5 The type of pump 51
3.2.6 The type of fan 55
3.2.7 Solar Thermal Energy Sources 56
3.2.8 Thermal Energy Storage 57
3.3 Experiment Instruments. 59
3.3.1 Multi-function instrument. 59
3.3.2 Thermocouple 61
3.4.3 Flow meter. 62
3.4.4 Hydrometer 62
3.4.5 Humidity Meter. 63
3.3.6 Power Meter 63
3.3.7 Inverter 66
3.4.8 Data Acquisition System. 67
3.4.9 Microcontroller 67
3.5 Experiment Method. 69
3.5.1 Experiment of controlled variable. 69
3.5.1.1 The Equilibrium Point. 70
3.5.1.2. Other influenced parameters. 72
3.5.2 Experiment of uncontrolled variable. 74
Chapter 4. Experiment result and discussion of controlled variables
4.1 Desiccant temperature variable 76
4.1.1 Heat and mass transfer analysis. 78
4.1.2 The equilibrium point analysis 80
4.2 Air inlet temperature variable 83
4.2.1 Heat and mass transfer analysis. 85
4.2.2 Equilibrium point analysis. 86
4.3 The speed of air flow rate variable. 87
4.3.1 Heat and mass transfer analysis. 89
Chapter 5 Conclusion
References
A brief biography
- Degree
- Master
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