REFRIGERATION AND AIR CONDITIONING IV doc

... instruction in refrigeration and air conditioning. The scope of this subcourse takes in unit components of the absorption system, including their functions and maintenance; water treatment methods and their ... removed and a vacuum pulled on the machine. This is done by operating the purge unit until the machine has been purged of nitrogen and a satisfactory vacuum reading att...

Ngày tải lên: 27/06/2014, 05:20

... transfer at the interface and this simplifies predictions of the performance of air- conditioning coils [1, 5, 9]. Refrigeration and Air- Conditioning Preface Refrigeration and its application is ... gas 3. Non-corrosive, non-toxic and non-flammable 4. Critical temperature and triple point outside the working range 38 Refrigeration and Air- Conditioning throw of the...

Ngày tải lên: 05/03/2014, 19:20

... or carbon dioxide (40 p.s.i.g.) and check all the joints with a soap solution. Release the pressure and repair any leaks that may have been found. After the leaks have been repaired, charge the system ... p.s.i.g. and leak test with a halide leak detector. Purge the system and repair all leaky joints that you may have found. Do not allow the compressor to build up pressure since overh...

Ngày tải lên: 05/03/2014, 19:20

... This guidance document addresses HFC and PFC emissions fr om users of refrigeration and air con- ditioning equipment including household refriger- ation, domestic air conditioning and heat pumps, ... HFC and PFC emis- sions from air conditioning equipment and process or fugitive related emissions. Partners should refer to this guidance document for cal- culating GHG...

Ngày tải lên: 08/03/2014, 19:20

... Ventilation, Air Conditioning and Refrigeration Author: Henry W. Puzio & Jim Johnson Publisher: Delmar Textbook: 1-“Modern Refrigeration and Air Conditioning Author: Andrew D. Althouse, ... Mechanical Technology Refrigeration and Air Conditioning - 78 - Refrigeration and Air Conditioning Major Mechanical Technology Department ELT 131 Co...

Ngày tải lên: 01/04/2014, 00:20

... accessible and obvious storage spaces. Menu help 11Heating, ventilation and air conditioning Understanding and using controls An efficient HVAC system provides just the right temperature and environmental ... activities, and processes are provided in the following table. Menu help 18Heating, ventilation and air conditioning Next steps There are many easy low and no-cost...

Ngày tải lên: 28/05/2014, 14:29

... of ASHRAE Standard 90.1-1999 and ASHRAE Standard 62-1999, often called the Energy standard and Indoor Air Qual- ity standard, the second edition of Handbook of Air Conditioning and Refrigeration ... Refrigeration Engineering and Air Conditioning as the teaching and learning package, and presented several papers at ASHRAE meetings. The First Edi- tion of the Handbook...

Ngày tải lên: 29/10/2013, 20:15

... freezing point of 0°C and a boiling point of 100°C. There are 2.4 CHAPTER TWO FIGURE 2.1 Mass and pressure of dry air, water vapor, and moist air. where n a ϭ number of moles of dry air, mol n w ϭ number ... properties of moist air is based on the formula- tions developed by Hyland and Wexler of the U.S. National Bureau of Standards. The psychromet- ric chart and tables of ASH...

Ngày tải lên: 29/10/2013, 20:15

... 1999 by CRC Press LLC Air- Conditioning and Refrigeration 9.1 Introduction 9-2 Air- conditioning • Air- Conditioning Systems • Air- Conditioning Project Development and System Design 9.2 ... Load 9.7 Air Handling Units and Packaged Units 9-65 Terminals and Air Handling Units • Packaged Units • Coils • Air Filters • Humidifiers 9.8 Refrigeration Componen...

Ngày tải lên: 14/03/2014, 19:27