This guide covers the refrigeration apparatus and platforms for functions except human convenience. This booklet comprises details on cooling, freezing, and storing meals; business functions of refrigeration; and coffee temperature refrigeration and has been up to date to incorporate forty seven Interactive Tables and 152 Digitized Graphs. essentially a reference for the training engineer, this quantity can also be precious for an individual fascinated by the cooling and garage of nutrients items. The booklet is split into 9 separate sections:

  • Refrigeration approach Practices
  • Food garage and kit
  • Food Refrigeration
  • Distribution of Chilled and Frozen foodstuff
  • Industrial purposes
  • Low-Temperature functions
  • Refrigeration gear
  • Unitary Refrigeration gear
  • General

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Additional info for 2006 ASHRAE Handbook - Refrigeration (I-P Edition)

Example text

The minimum value of h can then be calculated and a decision made as to whether the available height will permit the surge-type receiver. Multiple Condensers. Two or more condensers connected in series or in parallel can be used in a single refrigeration system. If connected in series, the pressure losses through each condenser must be added. Condensers are more often arranged in parallel. Pressure loss through any one of the parallel circuits is always equal to that through any of the others, even if it results in filling much of one circuit with liquid while gas passes through another.

A liquid-line sight glass may be installed downstream from the metering valve to serve as a convenient check on liquid being returned. Oil can be returned satisfactorily by taking a bleed of refrigerant and oil from the pump discharge (Figure 26) and feeding it to the heated oil receiver. If a low-side float is used, a jet ejector can be used to remove oil from the quiescent float chamber. REFRIGERATION ACCESSORIES Liquid-Suction Heat Exchangers Generally, liquid-suction heat exchangers subcool liquid refrigerant and superheat suction gas.

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. For information on defrosting, see Chapter 42. Flooded Evaporators Flooded evaporators may be desirable when a small temperature differential is required between the refrigerant and the medium being cooled. A small temperature differential is advantageous in low-temperature applications.

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