2014 ASHRAE Handbook -- Refrigeration (SI) (Ashrae Handbook by ASHRAE

By ASHRAE

The 2014 ASHRAE Handbook€”Refrigeration covers the refrigeration apparatus and structures for purposes except human convenience. This quantity comprises info and tips on cooling, freezing, and storing nutrition; business and clinical purposes of refrigeration; and low-temperature refrigeration; and features a dual-unit CD.

CD process requisites: 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 greater; Adobe Acrobat/Reader 10.0 or better; 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 reveal 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 larger. 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 global via learn, criteria writing, publishing, and carrying on with schooling.

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

a few of the components we post in include:
-Energy Modeling and Auditing
-High functionality development Design
-Psychrometrics
-Indoor Air caliber and Environmental Quality
-Data heart power Efficiency
-Noise & Vibration Control
-Humidity Control
-HVAC for Healthcare amenities

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Additional info for 2014 ASHRAE Handbook -- Refrigeration (SI) (Ashrae Handbook Refrigeration Si (Systems-International)

Example text

With the alternative arrangement shown, the liquid/oil mixture is heated to evaporate the refrigerant, and the remaining oil is drained into the crankcase or suction line. Refrigerant Driers and Moisture Indicators The effect of moisture in refrigeration systems is discussed in Chapters 6 and 7. Using a permanent refrigerant drier is recommended on all systems and with all refrigerants. It is especially important on low-temperature systems to prevent ice from forming at expansion devices. A full-flow drier is always recommended in hermetic compressor systems to keep the system dry and prevent decomposition products from getting into the evaporator in the event of a motor burnout.

Consult the manufacturer before using this method, because not all condensers are properly circuited for it. Using ambient temperature change (rather than condensing pressure) to modulate air-cooled condenser capacity prevents rapid cycling of condenser capacity. A disadvantage of this method is that the condensing pressure is not closely controlled. Fig. 37 Pressure Control for Evaporative Condenser (Air Intake Modulation) Microchannel Condensers The methods for low-ambient, condensing pressure control for microchannel condensers are essentially the same as those used for standard air-cooled condensers.

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.

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