Kooperativer Bibliotheksverbund

UID:

Format: 1 online resource (xiv, 394 pages) : , illustrations

Edition: First edition.

ISBN: 9780443135071 , 044313507X

Content: This book, edited by Xianting Li and Xinhua Xu, explores the use of natural energy in air conditioning systems. It covers a wide range of topics including enhanced treatment technologies for outdoor air, pipe-embedded wall and window systems, and the application of nocturnal cooling walls. The book provides an in-depth analysis of energy demand, natural energy resources, and the history of air conditioning with natural energy. It includes case studies from various regions, highlighting the potential energy savings and efficiency improvements. The work is aimed at researchers, practitioners, and students in the fields of engineering, environmental science, and energy technology, offering insights into sustainable building practices and innovative cooling methods.

Note: Front Cover -- Air Conditioning with Natural Energy -- Copyright Page -- Contents -- List of contributors -- Preface -- Part I -- 1 Introduction -- 1.1 Background -- 1.2 Basic thermal process of building -- 1.3 Cooling load and plant load -- 1.4 Analysis of energy demand and natural energy resources -- 1.5 Application forms and the natural energy of concern -- 1.6 Development history of air conditioning with natural energy -- 1.7 Main content -- References -- 2 Enhanced treatment technologies for outdoor air -- 2.1 Evaporative cooling -- 2.1.1 Fundamental categories of evaporative cooling -- 2.1.1.1 Direct evaporative cooling -- 2.1.1.2 Indirect evaporative cooling -- 2.1.1.2.1 Plate, tubular and heat pipe type IEC -- 2.1.1.2.2 Dew point IEC -- 2.1.1.3 Semiindirect evaporative cooling -- 2.1.2 Heat and mass transfer analysis -- 2.1.2.1 Direct evaporative cooling -- 2.1.2.2 Indirect evaporative cooling -- 2.1.2.2.1 Plate type IEC -- 2.1.2.2.2 Tubular type IEC -- 2.1.3 Common evaporative cooling air conditioning systems -- 2.2 Direct heat exchange with ground soil -- 2.2.1 Underground air tunnel system -- 2.2.2 Earth-to-air heat exchanger system -- 2.3 Pretreatment with shallow geothermal energy -- 2.3.1 Principle of fresh air prehandling system -- 2.3.2 Simulation method and evaluation index -- 2.3.2.1 Characteristics of the standard all-air system -- 2.3.2.2 Simulation models -- 2.3.2.3 Simulation methods -- 2.3.2.4 Evaluation index -- 2.3.3 Analysis of the performance of the system -- 2.3.3.1 The operating periods of the proposed system -- 2.3.3.2 The thermal transfer characteristics of the proposed system -- 2.3.3.3 Annual performance evaluation of the proposed system -- 2.3.3.4 Economic evaluations -- 2.4 Summary -- References -- 3 Pipe-embedded wall systems -- 3.1 Introduction -- 3.2 Description of pipe-embedded wall systems. , 3.3 Theoretical frequency-domain model -- 3.3.1 Theoretical frequency-domain models -- 3.3.2 Representation of temperature in finite-difference frequency-domain model -- 3.3.3 Representation of temperature in finite-element frequency-domain model -- 3.3.4 Characteristic disturbances -- 3.3.5 Frequency thermal characteristics of a typical pipe-embedded wall -- 3.4 Simplified thermal model of the wall body and parameter identification -- 3.4.1 Description of the simplified thermal model -- 3.4.2 Principle of parameter identification -- 3.4.3 A case study -- 3.5 Model of the pipe-embedded wall system and validation -- 3.5.1 Description of the semidynamic model -- 3.5.2 Experiments -- 3.5.3 Model validation -- 3.6 Steady performance evaluation method of the pipe-embedded wall -- 3.6.1 The steady equivalent thermal network model -- 3.6.2 Heat transfer performance evaluation index -- 3.6.3 Case study -- 3.7 Summary -- References -- 4 A nocturnal cooling wall system -- 4.1 Principle of nocturnal radiation cooling -- 4.2 Description of the nocturnal cooling wall system -- 4.3 Simplified model of the PenPCM and validation -- 4.3.1 Simplified PCM model with variable thermal capacitances and thermal resistances -- 4.3.2 Principle of parameter identification -- 4.3.3 Experiments -- 4.3.4 Model validation -- 4.4 Coupling model of the nocturnal cooling wall system -- 4.4.1 Nocturnal radiative cooling model -- 4.4.2 Gravity heat pipe model -- 4.4.3 The coupling model and solution -- 4.4.4 Experiment setup -- 4.4.5 Model validation -- 4.5 Thermal performance evaluation of a typical room with the nocturnal cooling wall system -- 4.5.1 Description of the room with the nocturnal cooling wall system -- 4.5.2 Simulation platform -- 4.5.3 Boundary conditions -- 4.5.4 Results and analysis -- 4.5.4.1 Comparative analysis in the typical day. , 4.5.4.2 Comparison and analysis of the cooling season -- 4.6 Steady performance evaluation of the nocturnal cooling wall system -- 4.6.1 The steady equivalent thermal network model -- 4.6.2 Heat transfer performance evaluation index -- 4.6.3 Case study -- 4.7 Summary -- References -- 5 The pipe-embedded window -- 5.1 Description of the pipe-embedded window system -- 5.2 Numerical simulation of the pipe-embedded window -- 5.2.1 Simulation method of the pipe-embedded window -- 5.2.1.1 Physical model -- 5.2.1.2 Mathematical models and numerical methods -- 5.2.2 Validation of simulation methods -- 5.2.2.1 Grid independence test -- 5.2.2.2 Validation by experimental results -- 5.2.3 Heat transfer analysis of pipe-embedded window in summer -- 5.2.3.1 Heat transfer process analysis -- 5.2.3.2 The impact of glass configuration -- 5.2.4 Heat transfer analysis of pipe-embedded window in winter -- 5.3 Thermal network model of the pipe-embedded window -- 5.3.1 Analysis of heat transfer process of pipe-embedded window -- 5.3.2 Heat transfer network model for pipe-embedded window -- 5.3.3 Calculation of convective heat for pipe-embedded window -- 5.3.4 Analysis of solar radiation heat gain from pipe-embedded window -- 5.4 Performance evaluation method of the pipe-embedded window -- 5.4.1 Heat transfer analysis for pipe-embedded window in nonuniform environments -- 5.4.2 Analysis of indoor heat gain law of pipe-embedded window -- 5.4.3 Heat transfer analysis of pipe-embedded window -- 5.4.4 Model verification -- 5.5 Comfort test of the pipe-embedded window -- 5.5.1 Thermal environment analysis -- 5.5.2 Indicators for thermal manikin -- 5.6 Applicability of the pipe-embedded window in different regions -- 5.6.1 Seasonal effects of pipe-embedded window during the cooling season -- 5.6.1.1 Application effects in a typical city. , 5.6.1.2 Application effects in different directions -- 5.6.2 Heating seasonal energy consumption analysis of pipe-embedded window -- 5.7 Summary -- References -- 6 Revised degree hours -- 6.1 Degree hour method -- 6.2 Revised degree hour method -- 6.2.1 General expression of revised degree hour -- 6.2.2 Rationality of revised degree hour -- 6.2.3 Simplified expression of revised degree hour -- 6.2.3.1 Simplified coefficient of performance -- 6.2.3.2 Simplified natural energy temperature -- 6.2.3.3 Simplified base temperature -- 6.2.3.4 Validation of the simplified revised degree hour method -- 6.3 Relationship between revised degree hour and energy savings -- 6.3.1 Classification of natural energy utilization systems -- 6.3.2 Natural energy use in the indoor space -- 6.3.3 Natural energy use in the envelope -- 6.3.4 Natural energy use in the fresh air handling unit -- 6.4 Applications of revised degree hour -- 6.4.1 Choice of natural energy utilization forms in various climate regions -- 6.4.2 Choice of the application location of natural energy -- 6.4.3 Choice of suitable natural energy sources -- 6.5 Summary -- References -- 7 Application potential of natural energy -- 7.1 Introduction -- 7.2 Application potential estimation method and validation -- 7.2.1 Method description -- 7.2.2 Estimation method validation -- 7.2.2.1 Pipe-embedded wall-ground-source heat exchanger system -- 7.2.2.2 Pipe-embedded wall-radiative sky cooler system -- 7.3 Application potential of pipe-embedded wall with ground-source heat exchangers -- 7.3.1 System description -- 7.3.2 Typical pipe-embedded wall and boundary conditions -- 7.3.3 Analysis of the energy-saving potential -- 7.4 Application potential of pipe-embedded wall with radiative sky coolers -- 7.4.1 System description -- 7.4.2 Temperature of the cold water provided by radiative sky cooler. , 7.4.3 Analysis of the energy-saving potential -- 7.5 Application potential of pipe-embedded window with cooling towers -- 7.5.1 System description -- 7.5.2 Analysis of the energy-saving potential -- 7.6 Application potential of fresh air handling with ground-source heat exchangers -- 7.6.1 System description -- 7.6.2 Analysis of the energy-saving potential -- 7.7 Contribution of air conditioning with natural energy sources in different climate regions -- 7.7.1 Effect analysis of five climate regions in China -- 7.7.1.1 Effect analysis of pipe-embedded wallwith ground-source heat exchangers in the cooling season -- 7.7.1.2 Effect analysis of pipe-embedded wallwith ground-source heat exchangers in the heating season -- 7.7.1.3 Effect analysis of pipe-embedded wall with radiative sky coolers in the cooling season -- 7.7.1.4 Effect analysis of pipe-embedded wall with cooling towers in the cooling season -- 7.7.1.5 Effect analysis of pipe-embedded window with ground-source heat exchangers in the cooling season -- 7.7.1.6 Effect analysis of pipe-embedded window with ground-source heat exchangers in the heating season -- 7.7.1.7 Effect analysis of pipe-embedded window with cooling towers in the cooling season -- 7.7.1.8 Effect analysis of natural ventilation in the cooling season -- 7.7.1.9 Effect analysis of mechanical ventilation in the cooling season -- 7.7.1.10 Effect analysis of fresh air with ground-source heat exchangers in the cooling season -- 7.7.1.11 Effect analysis of fresh air with ground-source heat exchangers in the heating season -- 7.7.2 Effect analysis of global climate regions -- 7.7.2.1 Effect analysis of pipe-embedded wall with ground-source heat exchangers in the cooling season -- 7.7.2.2 Effect analysis of pipe-embedded wall with ground-source heat exchangers in the heating season. , 7.7.2.3 Effect analysis of pipe-embedded wall with radiative sky coolers in the cooling season.

Additional Edition: ISBN 9780443135064

Additional Edition: ISBN 0443135061

Language: English