太阳能再生除湿转子性能研究

Chapter 1 Introduction 1.1 Introduction 1.1.1 Background 1.1.2 Overview of desiccant cooling system 1.1.3 Advantages of desiccant cooling system 1.2 Solid desiccant cooling research 1.2.1 Basic structure and principle 1.2.2 Historical development and progress of solid desiccant cooling system 1.2.3 Energy source for desiccant rotor regeneration 1.3 Analysis methods for desiccant dehumidification l.3 .l Theoretical studies 1.3.2 Experimental studies References Chapter 2 Measurements of energy distribution within narrow channels 2.1 Energy distribution measurement of laser irradiation 2.1.1 Concept of measurement 2.1.2 Data reduction 2.1.3 Materials 2.1.4 Apparatus 2.1.5 Conditions 2.1.6 Results and discussion 2.2 Energy distribution measurement of solar irradiation 2.2.1 Concept of measurement 2.2.2 Data reduction 2.2.3 Materials 2.2.4 Apparatus 2.2.5 Conditions 2.2.6 Results and discussion 2.3 Comparison between laser and solar irradiations 2.4 Conclusions References Chapter 3 Predictions for energy distribution 3.1 Concept of prediction models 3.1.1 Prediction model regarding the energy absorption efficiency 3.1.2 Prediction model of view factor 3.1.3 Prediction model of Beer' s law 3.2 Parameters for silica gel sample and accuracy evaluation 3.2.1 "RE2010" model 3.2.2 View factor model 3.2.3 Beer' s law model 3.3 Comparison of models 3.4 Conclusions References Chapter 4 Experiment for measuring water vapour adsorption/desorption rate in desiccant rotor 4, 1 Measurement system 4.1.1 Apparatus 4.1.2 Material 4.1.3 Conditions and data evaluation method 4.2 Measurements results and discussion 4.2.1 Temperature and humidity measurements 4.2.2 Influence of inlet air temperature, humidity and humidity ratio on the dehumidifying rate 4.2.3 Influence of air flow velocity 4.3 Conclusions References Chapter 5 Simulation of dehumidifying process of desiccant rotor 5.1 Mathematical analysis 5.1.1 Physical model 5.1.2 Governing equations 5.1.3 Calculation condition 5.1.4 Performance indices 5.2 Results and discussion 5.2.1 Comparison between experiment and simulation 5.2.2 Distributions of temperature, humidity, moisture removal and dehumidifying (adsorption) rate within desiccant rotor 5.2.3 Influence of amount of input solar energy and rotor thickness on total adsorption rate 5.2.4 Comparison between direct and indirect heating types 5.2.5 Influence of heat transfer coefficient between bed and air 5.2.6 Influence of air flow velocity ( contacting time) 5.3 Conclusions References