Heat Pumps (eBook)

Kazimierz Brodowicz, Tomasz Dyakowski, Wyszynski, M L Wyszynski (Autoren)

eBook Download: PDF

2013 | 1. Auflage
210 Seiten
Elsevier Science (Verlag)
978-1-4832-9195-6 (ISBN)

Infos

Heat pumps and related technology are in widespread use in industrial processes and installations. This book presents a unified, comprehensive and systematic treatment of the design and operation of both compression and sorption heat pumps. Heat pump thermodynamics, the choice of working fluid and the characteristics of low temperature heat sources and their application to heat pumps are covered in detail.Economic aspects are discussed and the extensive use of the exergy concept in evaluating performance of heat pumps is a unique feature of the book. The thermodynamic and chemical properties of certain new working fluids and sorbents are also explored.There are considerable pressures on those involved in the use of heat pumps to achieve energy savings and this presents a challenging task in today's industrial climate. This book provides many examples of such energy savings such as the use of large heat pump units utilising various low temperature industrial waste heat sources. Heat Pumps is illustrated throughout by specific solutions as applied worldwide. The subject area is approached logically, covering both design and calculation methods, and is oriented towards the needs of the process user. The treatment given to the selection of working fluids should be compulsory reading. - Chemical Engineer, June 1994

Inhalt

Front Cover 1
Heat Pumps 4
Copyright Page 5
Table of Contents 6
Preface 10
Nomenclature 12
Chapter 1. INTRODUCTION 18
1.1 Historical notes 18
1.2 Applications of heat pumps 19
1.3 Arguments for and against the use of heat pumps 20
1.4 Thermodynamic principles of heat pump operation 23
1.5 Auxiliary concepts and definitions 48
Chapter 2. WORKING FLUIDS FOR VAPOUR CYCLES, SORBENTS AND WORKING FLUID-SORBENT PAIRS 58
2.1 Working fluids 58
2.2 Sorbents and their specification 71
Chapter 3. THE HIGH- AND LOW-TEMPERATURE HEAT SOURCES 79
3.1 General information on sources 79
3.2 Finite temperature differences in the low- and high-temperature heat sources, and effect of these differences on the cycle and its performance 81
3.3 The natural low-temperature heat sources 85
3.4 Artificial low-temperature heat sources 96
3.5 The high-temperature heat source 100
Chapter 4. MECHANICAL VAPOUR COMPRESSION HEAT PUMPS 101
4.1 Methods of describing the cycle of mechanical vapour compression heat pumps 101
4.2 The non-ideal reverse Rankine cycle 104
4.3 The approximate cycle 113
4.4 Thermodynamic and economic optimization of a mechanical compression heat pump 121
4.5 Types of motors used to drive the compressors regeneration of heat losses using a heat engine
Chapter 5. SORPTION CYCLE HEAT PUMPS 128
5.1 Description of a sorption heat pump cycle 128
5.2 Theoretical cycle of a sorption heat pump 135
5.3 The approximate cycle 140
Chapter 6. EXAMPLES 154
Example 6.1 154
Example 6.2 170
Example 6.3 175
Example 6.4 179
Example 6.5 185
Example 6.6 186
Example 6.7 190
Example 6.8 191
Example 6.9 194
APPENDICES 198
A. 1 Formulae for computing thermodynamic parameters of R12 and R22 working fluids 198
A.2 Formulae for computing thermodynamic parameters of working fluid and sorbent pairs 199
A.3 log P-i charts 202
A.4 i-z charts 205
A.5 log P-z charts 208
A.6 Performance data of mechanical vapour compression cycle heat pumps 209
A.7 Examples of design solutions of sorption cycle heat pumps 210
References 215
Further reading 221
Index 222

Produkt-Details

• Erscheint lt. Verlag: 22.10.2013
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Thermodynamik
• Themenwelt: Technik ► Bauwesen
• Themenwelt: Technik ► Maschinenbau
• Themenwelt: Technik ► Umwelttechnik / Biotechnologie
• ISBN-10: 1-4832-9195-2 / 1483291952
• ISBN-13: 978-1-4832-9195-6 / 9781483291956