2014 ASHRAE Handbook -- Refrigeration (I-P) (Ashrae Handbook by ASHRAE PDF

By ASHRAE

ISBN-10: 1680153277

ISBN-13: 9781680153279

ISBN-10: 1936504715

ISBN-13: 9781936504718

The 2014 ASHRAE Handbook€”Refrigeration covers the refrigeration gear and platforms for purposes except human convenience. This quantity comprises info and information on cooling, freezing, and storing nutrients; business and clinical purposes of refrigeration; and low-temperature refrigeration; and incorporates a dual-unit CD.

CD procedure specifications: home windows: CD-ROM force; 1.3 GHz or speedier processor; Microsoft home windows Vista, home windows 7, or home windows eight (62-bit and 64-big); 1 GB of RAM (2 GB recommended); Microsoft net Explorer eight or better; Adobe Acrobat/Reader 10.0 or larger; 350 MB hard-disk area. Macintosh: Mac OS X v. 10.5.8 or v. 10.6.4; 512 MB of RAM (1 GB recommended); 415 MB hard-disk area; 800 x six hundred monitor solution (1024 x 768 recommended); Safari four for Mac OS X v. 10.5.8, Safari four or 5.0x for Mac OS X v. 10.6.4, Safari 6.0 for Mac OS X v. 10.7.4 or v. 10.8; Firefox; Adobe Acrobat/Reader 10.0 or greater. quotation: 2014 ASHRAE Handbook

ASHRAE, based in 1894, is a global association of a few 50,000 folks. ASHRAE fulfills its undertaking of advancing heating, air flow, air-con, and refrigeration to serve humanity and advertise a sustainable international via study, criteria writing, publishing, and carrying on with schooling.

The ASHRAE Handbooks are the layout average for keep watch over of outfitted environments with volumes on structures and kit, HVAC functions, Refrigeration and basics. every one is up-to-date each 4 years. as well as publishing layout counsel for engineers, architects, and facility managers, we additionally put up a sequence of texts for lecture room use.

the various parts we submit in include:
-Energy Modeling and Auditing
-High functionality development Design
-Psychrometrics
-Indoor Air caliber and Environmental Quality
-Data middle power Efficiency
-Noise & Vibration Control
-Humidity Control
-HVAC for Healthcare amenities

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Extra info for 2014 ASHRAE Handbook -- Refrigeration (I-P) (Ashrae Handbook Refrigeration Systems/Applications Inch-Pound System

Example text

Figure 32 shows the closed or heat exchanger type of subcooler. It should have sufficient heat transfer surface to transfer heat from the liquid to the evaporating refrigerant with a small final temperature difference. Pressure drop should be small, so that full pressure is available for feeding liquid to the expansion device at the lowtemperature evaporator. The subcooler liquid control valve should be sized to supply only the quantity of refrigerant required for the subcooling. This prevents a tremendous quantity of liquid from flowing to the upper-stage suction in the event of a valve failure.

Oversized thermostatic expansion valves result in cycling that alternates flooding and starving the coil. This occurs because the valve attempts to throttle at a capacity below its capability, which causes periodic flooding of the liquid back to the compressor and wide temperature variations in the air leaving the coil. Reduced compressor capacity further aggravates this problem. Systems having multiple coils can use solenoid valves located in the liquid line feeding each evaporator or group of evaporators to close them off individually as compressor capacity is reduced.

39 Hot-Gas Bypass Arrangements MINIMIZING REFRIGERANT CHARGE IN COMMERCIAL SYSTEMS Preventing refrigerant leaks is the most effective way to reduce halocarbons’ environmental effects. However, if a leak does occur, the consequence are reduced if the system charge has been minimized. There are many ways to reduce charge, but most require significant system modifications; consequently, charge reduction is usually performed during system remodeling or replacement. One of the best opportunities to reduce refrigerant charge exists in the distribution piping that feeds liquid to the evaporator from the receiver and returns the suction gas to the compressor.

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