Publisher: سازمان سمت
Author: حسن مولوی
Printed Page Count : 120
Congress Class : PE۱۱۲۷ /ت۲م۸ ۱۳۹۲
Dewey Decimal Classification : ۴۲۸/۶
National Bibliography Number : ۳۵۱۸۴۵۲
ISBN : 9789644598968
Publish Year : 1395
Research Group Code : 2
Digital ISBN : 978-600-02-2021-1
کد کتاب : 0852
For an understanding of refrigeration, air conditioning and central heating, it is necessary to know some fundamentals, technical/scientific terms, defini-tions and measurements. Terms such as density, specific gravity, velocity, etc are frequently used in technical passages related to the subject.
The density of a material is the mass per unit volume of the material. Density is expressed as pounds per cubic foot or grams per cubic centimetre. The relative density or specific gravity of a substance is the ratio of the density of the substance to the density of water of 4ºC. The specific volume of a substance is the volume occupied by unit mass of the material. By definition it will be clear that specific volume is the reciprocal of density, i.e.
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تعداد صفحات نسخه دیجیتال : 218
1. Fundamentals (1)
Fundamentals (2)
2. Hand Tools
Specialized Service and Installation Equipment
3. Boilers (1)
Boilers (2)
4. Solar Heat
Solar Collectors
5. Refrigeration
Refrigeration Load
6. Compression Cycle Components
Refrigerants
7. Refrigeration Piping Materials and Fabrication
Methods of Joining Tubing
8. How Old Is Air Conditioning
Air Conditioning Benefits
9. Hydronic Heat
Oil-Fired Forced-Warm-Air Furnaces
10. Air Handling Equipment (1)
Fans: Selection, Accessories, Control and Installations
11. Air Handling Equipment (2)
Washer Equipment
12. Air Humidification and Filtration
Air Filtration and Purification
13. Pressure-Sensing Devices (1)
Pressure-Sensing Devices (2)
14. Air Conditioning Systems
Central-Station Systems
References
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