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

By ASHRAE

The 2014 ASHRAE Handbook€”Refrigeration covers the refrigeration apparatus and structures for functions except human convenience. This quantity contains facts and tips on cooling, freezing, and storing foodstuff; commercial and scientific functions of refrigeration; and low-temperature refrigeration; and incorporates a dual-unit CD.

CD procedure specifications: home windows: CD-ROM force; 1.3 GHz or quicker 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 larger; Adobe Acrobat/Reader 10.0 or greater; 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 better. quotation: 2014 ASHRAE Handbook

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

The ASHRAE Handbooks are the layout usual for keep watch over 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 chain of texts for school room use.

many 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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The muffler should be installed to allow oil to flow through it and not be trapped. 26 2014 ASHRAE Handbook—Refrigeration DEFROST GAS SUPPLY LINES Sizing refrigeration lines to supply defrost gas to one or more evaporators is not an exact science. The parameters associated with sizing the defrost gas line are related to allowable pressure drop and refrigerant flow rate during defrost. Engineers use an estimated two times the evaporator load for effective refrigerant flow rate to determine line sizing requirements.

This occurs because these coils have insufficient capacity when operating as an air-cooled condenser. The problem is not as acute with extended-surface coils. Shortcycling results in excessive deposits of mineral and scale on the tubes, decreasing the life of the water pump. One method of controlling head pressure is using cycle fans and pumps. This minimizes water-side scaling. In colder climates, an indoor water sump with a remote spray pump(s) is required. The fan cycling sequence is as follows: Upon dropping head pressure • Stop fans.

Solenoid valves should be placed before the constant-pressure bypass valve and before the thermal expansion valve used for liquid injection desuperheating, so that these devices cannot function until they are required. Control valves for hot gas should be close to the main discharge line because the line preceding the valve usually fills with liquid when closed. 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.

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