Air Conditioning Engineering Fifth Edition By W.P. Jones

Air Conditioning Engineering Fifth Edition By W.P. Jones

Preface to the Fifth Edition

Although the fundamentals  of the subject have not altered since the publication of the last  edition  there  have  been  significant  changes  in  the  development  and  application  of  air  conditioning. Among these are concerns about indoor air quality, revision of outside design  data and the expression  of cooling loads  arising from solar radiation through glass by the  CIBSE.  The phasing-out of refrigerants that have been in use for many years  (because  of  their greenhouse effect and the risks of ozone depletion) and the introduction of replacement  refrigerants  are far-reaching in their consequences  and have been taken into  account.  The  tables on the thermodynamic properties of refrigerant 22 have been deleted and new tables  for refrigerants  134a and ammonia substituted. There have also been new developments in  refrigeration compressors  and other plant. Advances in automatic  controls,  culminating in  the  use  of the  Internet  to  permit  integration  of the  control  and  operation  of  all  building  services worldwide,  are very important.  Revisions in expressing filtration efficiency,  with  an emphasis on particle s'ize, have meant radical changes in the expression of the standards  used in the UK, Europe and the USA. The above developments have led to changes in the  content,  notably  in  chapters  4  (on  comfort),  5  (on  outside  design  conditions),  7  (on heat gains), 9 (for the refrigerants used),  12 (automatic controls) and 17 (on filtration standards). 

Two  examples  on heat  gains  in the  southern  hemisphere  have been  included.  As  with  former  editions,  the  good  practice  advocated  by  the  Chartered  Institution  of  Building Services Engineers has been followed, together with the recommendations  of the  American  Society  of  Heating,  Refrigerating  and  Air  Conditioning  Engineers,  where  appropriate.  It is believed that practising engineers  as well as students  will find this book of value. 

Contents

1. The Need for Air Conditioning

2. Fundamental Properties of Air and Water Vapour Mixtures

3. The Psychrometry of Air Conditioning Processes

4. Comfort and Inside Design Conditions

5. Climate and Outside Design Conditions

6. The Choice of Supply Design Conditions

7. Heat Gains from Solar and Other Sources

8. Cooling Load

9. The Fundamentals of Vapour Compression

Refrigeration

10. Air Cooler Coils

11. The Rejection of Heat from Condensers and

Cooling Towers

12. Refrigeration Plant

13. Automatic Controls

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