ASHRAE's 2014 ASHRAE Handbook -- Refrigeration (I-P) (Ashrae Handbook 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 functions except human convenience. This quantity comprises information and suggestions on cooling, freezing, and storing foodstuff; commercial and scientific purposes of refrigeration; and low-temperature refrigeration; and contains a dual-unit CD.

CD approach standards: 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 web Explorer eight or better; Adobe Acrobat/Reader 10.0 or greater; 350 MB hard-disk house. Macintosh: Mac OS X v. 10.5.8 or v. 10.6.4; 512 MB of RAM (1 GB recommended); 415 MB hard-disk house; 800 x six hundred display 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 people. ASHRAE fulfills its venture 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 general for regulate of equipped environments with volumes on structures and gear, HVAC purposes, Refrigeration and basics. every one is up-to-date each 4 years. as well as publishing layout tips for engineers, architects, and facility managers, we additionally post a sequence of texts for school room use.

a number of the parts we put up 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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2014 ASHRAE Handbook -- Refrigeration (SI) (Ashrae Handbook by ASHRAE PDF

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

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

Example text

A small temperature differential is advantageous in low-temperature applications. In a flooded evaporator, the coil is kept full of refrigerant when cooling is required. The refrigerant level is generally controlled through a high- or low-side float control. Figure 16 represents a typical arrangement showing a low-side float control, oil return line, and heat interchanger. Circulation of refrigerant through the evaporator depends on gravity and a thermosiphon effect. A mixture of liquid refrigerant and vapor returns to the surge tank, and the vapor flows into the suction line.

When this problem exists, either a double riser or a single riser with an oil separator can be used. Double Hot-Gas Risers. A double hot-gas riser can be used the same way it is used in a suction line. Figure 18 shows the double riser principle applied to a hot-gas line. Its operating principle and sizing technique are described in the section on Double Suction Risers. Single Riser and Oil Separator. As an alternative, an oil separator in the discharge line just before the riser allows sizing the riser for a low pressure drop.

The hot-gas bypass line should be sized so that its pressure loss is only a small percentage of the pressure drop across the valve. Usually, it is the same size as the valve connections. When sizing the valve, consult a control valve manufacturer to determine the minimum compressor capacity that must be offset, refrigerant used, condensing pressure, and suction pressure. When unloading (Figure 39C), head pressure control requirements increase considerably because the only heat delivered to the condenser is that caused by the motor power delivered to the compressor.

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