Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BS EN 13771-2:2017

BS EN 13771-2:2017

$167.15

Compressors and condensing units for refrigeration. Performance testing and test methods – Condensing units

Published By Publication Date Number of Pages
BSI 2017 34
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This European Standard applies only to condensing units for refrigeration and describes a number of selected performance test methods. These methods provide sufficiently accurate results for the determination of the refrigerating capacity, power absorbed, refrigerant mass flow and the coefficient of performance. This European Standard applies only to performance tests conducted at the manufacturer’s works or wherever the instrumentation and load stability for testing to the accuracy required is available.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
9 3.2 Symbols
12 3.3 Refrigerant circuit state points
4 Uncertainty of measurement and test conditions
4.1 Uncertainty of performance data
4.2 Uncertainty of measurement
14 4.3 Test conditions
15 5 General requirements
5.1 Test equipment
5.2 Calculation methods
5.2.1 Principle
5.2.2 Specific enthalpy
5.2.3 Refrigerant mass flow
5.2.4 Power absorbed
5.2.5 Basic formulae
17 5.3 Requirements for the selection of test methods
5.3.1 General
5.3.2 Second concurrent test
5.4 Test procedure
5.4.1 General
5.4.2 Steady working conditions
5.4.3 Recording of measured data
5.5 Pressure and temperature measuring points
18 5.6 Oil circulation
5.7 Refrigerant composition
5.8 Calibration and requirements regarding measurement uncertainty
5.8.1 Calibration of calorimeters for methods A, B and C
19 5.8.2 Determination of the refrigerating capacity
5.8.3 Determination of the power absorbed by the condensing unit
5.9 Source of refrigerant data
5.10 Test setup for air cooled condensing units
5.10.1 Air inlet temperature
5.10.2 Test room
20 5.10.3 Refrigerant charge
6 Test methods
6.1 General
6.2 List of test methods
6.2.1 Calorimetric methods
6.2.1.1 Evaporator calorimeter
21 6.2.1.2 Condenser calorimeter
6.2.2 Flow meter methods
6.3 Method A: secondary fluid calorimeter on the suction side
6.3.1 Description
22 6.3.2 Calibration
6.3.3 Test procedure
6.3.3.1 General
6.3.3.2 Water cooled condensing unit
6.3.3.3 Air cooled condensing unit
6.3.4 Requirements
6.3.5 Determination of refrigerant mass flow
6.4 Method B: dry system refrigerant calorimeter on the suction side
6.4.1 Description
23 6.4.2 Calibration
6.4.3 Test procedure
6.4.4 Requirements
24 6.4.5 Determination of refrigerant mass flow
6.5 Method C: Water cooled condenser calorimeter
6.5.1 Description
25 6.5.2 Calibration
6.5.3 Test procedure
6.5.4 Requirements
6.5.5 Determination of refrigerant mass flow
6.6 Method D: Refrigerant gas flow meter on the suction side (see 6.6)
6.6.1 Description
26 6.6.2 Test procedure
6.6.3 Requirements
6.6.4 Determination of refrigerant mass flow
6.6.4.1 Measurement with mass flow meter
6.6.4.2 Measurement with volumetric flow meter
6.7 Method E: refrigerant flow meter in the liquid line
6.7.1 Description
27 6.7.2 Test procedure
6.7.3 Requirements
6.7.4 Determination of the refrigerant mass flow
28 7 Determination of the power absorbed by the condensing unit
7.1 General
7.1.1 Introduction
7.1.2 Measurement for condensing units where the motor is not an integral part of the condensing unit
7.1.3 Measurement for condensing units where the motor is an integral part of the condensing unit
7.1.4 Measurement of the power absorbed by the auxiliary components and fans
7.2 Calculation
29 8 Test report
8.1 General
30 8.2 Test data
8.3 Test results
8.4 Overview of test values

Related products

BS EN 13771-2:2017
$167.15