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GB/T 18517-2012Terminology of refrigeration (English PDF)

制冷术语

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 5, 2012

Implementation date

March 1, 2013

Scope

GB/T 18517-2012 is the English-translated version of 制冷术语.

GB/T 18517-2012 is the Chinese standard "Terminology of refrigeration". Its scope clause reads: This standard defines the term refrigeration. This standard applies to professional refrigeration products manufacturing, engineering design, construction, maintenance and management as well as research, education and other fields. Its clauses include basic terms.

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Document preview — GB/T 18517-2012

National Standard of the People's Republic of China

ICS
01.040
Classification
A 22
Replacing
GB/T 18517-2001

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Introduction
  • 1 Scope
  • 2 Basic terms
  • 2.1 Temperature
  • 2.2 Pressure
  • 2.3 humidity
  • 2.4 Heat
  • 2.5 Thermodynamic Properties and Process
  • 2.6 Heat and Mass Transfer
  • 3 Cooling
  • 3.1 Cooling Methods
  • 3.2 Refrigeration Cycle
  • 3.3 Performance parameters and conditions
  • 3.4 Cooling System
  • 3.5 refrigeration unit
  • 3.6 refrigerants and coolants
  • 3.7 Refrigeration and Environment
  • 4 Refrigeration Equipment
  • 4.1 Refrigeration Compressors
  • 4.3 refrigeration compressor performance parameters
  • 4.4 expander
  • 4.5 exchanger
  • 4.6 Annex
  • 5 refrigeration and cold chain
  • 5.1 Basic Concepts
  • 5.2 cold equipment
  • 5.3 Storage
  • 5.4 Refrigerated Transport
  • 5.5 Distribution
  • 6 air conditioning
  • 6.1 Basic Concepts
  • 6.4 ventilation and clean
  • 7 pump
  • 8 and Cryogenics Cryogenic Engineering
  • 8.1 Basic Concepts
  • 8.2 cryogenic equipment and cryogenic apparatus
  • 8.3 cryogenic and cryogenic biological medicine
  • 9 refrigeration applications in other areas

1 Scope

This standard defines the term refrigeration.

This standard applies to professional refrigeration products manufacturing, engineering design, construction, maintenance and management as well as research, education and other fields.

2 Basic terms

2.1 Temperature

2.1.1 Ambient temperature

Objects in the environment surrounding the object and is not disturbed or affected (usually air) temperature.

2.1.2 Limit temperature

Material or product before a failure occurs to achieve maximum or minimum temperature.

2.1.3 Air dry bulb temperature

In the air, no effects of radiation sensitive elements with a common thermometer indicated temperature.

2.1.4 Air wet bulb temperature

When the package has lower wet gauze soaked in water temperature on the thermometer package, delivered by air water heat of vaporization of water absorbed is equal to

When the heat, temperature of the water or damp material will remain unchanged, the air temperature is the wet bulb temperature.

2.1.5 Dew point temperature

While maintaining the water vapor content in the air the same conditions, cooling the air by constant pressure of water vapor reaches a temperature of saturation.

2.1.6 Frost temperature

In the case of a given pressure and composition, temperature of the mixed gas of one or more components of the beginning of solidification; for moist air, giving

The case of a given pressure and composition, wherein the temperature of the water vapor begins to solidify when.

2.1.7 Saturation temperature

At a given pressure, liquid and gaseous substances, gaseous or solid state at a temperature and time of dynamic equilibrium.

2.1.8 Condensing temperature

At a given pressure, the saturation temperature of the refrigerant liquefaction.

2.1.9 Evaporation temperature

At a given pressure, the saturation temperature of the refrigerant gasification.

2.1.10 Suction temperature

The gas temperature at the inlet of the compressor.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 51 pages — is available in the English PDF.

Referenced standards

Similar standards

Editions of GB/T 18517

EditionTitleRevisionStatus
GB/T 18517-2012Terminology of refrigerationcurrent editionCurrent
GB/T 18517-2001Terminology of refrigerationprevious editionSuperseded

This page sells the current edition, GB/T 18517-2012. Earlier editions are listed for reference only.

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