Abstract

Liquid flow window is a novel multiglazing system with liquid medium in the window cavity to serve as solar thermal collector and heat/cool radiator. Provided in the book is a comparative analysis of its thermal characteristicsThermal performance optimizations considering the varied schematic design parameters, hot water demand patterns and climates are introducedAnd economic, energy, and environmental life cycle assessment are also conducted to quantify the sustainability of the buoyant driven liquid flow window.

This book provides general knowledge about glazing techniques for researchers and engineersAnd the systematic studies can also be references for researchers in the area of building integrated solar energy application

Contents

1Introduction1

11Single Glazing3

12Double Glazing System5

13Multiglazing System8

14Liquid Flow Window10

2Experimental Investigation of Thermal Performance of Double 

Glazing Liquid Flow Window13

21Research Method14

211Experiment Set Up14

212Measuring Instrument15

22Experiments and Results Analysis17

221Water Flow Window Performance17

222Antifreezing Liquid Flow Window Performance23

223Performance Comparison of Water and Antifreezing Liquid Flow

Window30

23Summary31

3Schematic Optimization of Liquid Flow Window32

31Research Methodology33

311Mathematical Models Development33

312Model Validation41

32Performance Evaluation with the Variation of Schematic

Parameters45

321Thermal Performance at Different Cavity Spaces45

322Thermal Performance Comparison with Various Pipework Designs50

323Thermal Performance Evaluation with Variation of Window

Dimension57

33Summary61

4Performance Evaluation with PCM Thermal Storage:for Residential 

and Office Buildings Hot Water Demand Patterns63

41Numerical Models Development65

411Mathematical Models for Case 166

412Mathematical Models for Case 267

42Model Validation68

43Numerical Study on Thermal Performance of Liquid Flow Window

with PCM Heat Exchanger71

431Thermal Performance for Residential Building Application72

432Thermal Performance for Office Building Application79

433Thermal Performance with Variation of PCM Layer Thickness82

44Summary83

5Liquid Flow Window Performance under Different Climate

Applications85

51Research Methodology86

511Model Validation for Antifreezing Liquid Flow Window86

512Numerical Studies in Different Climates89

52Thermal Performance Analysis in Various Climate Applications91

521The Effect of Liquid Concentrations on thermal Performance91

522Thermal Performance Comparison under Different Climates92

523Thermal Performance Improvement in Cold and Extremely Cold

Climates96

53Summary98

6Life Cycle Assessment of Liquid Flow Window100

61The Method of Analysis102

62Lifelong Investment,Energy Input and Carbon Emission of Liquid

Flow Window104

621Investment,Energy Input and Carbon Emission for Window

Materials104

622Cost,Energy Consumption and Carbon Emission from Construction

to Disposal109

63Building Energy Simulation in ESPr113

631Validation Study113

632Building Energy Simulation115

633Energy Saving Performance of Liquid Flow Window122

64Payback Period Analysis125

65Summary128

7Summary and Major Conclusions130

71Research Work Completed130

72Findings and Conclusions132

References136