GB/T 41660-2022 English PDF (GBT41660-2022)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB/T 41660-2022
Historical versions: GB/T 41660-2022
Preview True-PDF (Reload/Scroll if blank)

GB/T 41660-2022: The survey-evaluating method of energy utilization for refrigeration test systems
GB/T 41660-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.200
CCS J 73
The survey-evaluating method of energy utilization for
refrigeration test systems
ISSUED ON: JULY 11, 2022
IMPLEMENTED ON: FEBRUARY 01, 2023
Issued by: Status Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Survey items ... 5
5 Survey requirements and survey methods ... 7
6 Evaluation of survey results ... 16
Annex A (informative) Survey report for energy utilization of refrigeration test system
... 18
The survey-evaluating method of energy utilization for
refrigeration test systems
1 Scope
This document specifies the survey items, survey requirements, survey methods and
evaluation of survey results for the survey-evaluating of energy-utilizing condition of
refrigeration test system.
This document is applicable to the evaluation of energy utilization survey for
refrigeration test systems.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 2589, General rules for calculation of the comprehensive energy consumption
GB/T 6422, Testing guide for energy consumption of equipment
GB/T 7941, Refrigeration test system
GB/T 10870, The methods of performance test for water chilling (heat pump)
packages using the vapour compression cycle
GB 17167, General principle for equipping and managing of the measuring
instrument of energy in organization of energy using
GB/T 17758, Unitary air conditioners
GB/T 18430.1, Water chilling (heat pump) packages using the vapor compression
cycle - Part 1: Water chilling (heat pump) packages for industrial and commercial
and similar application
GB/T 18430.2, Water chilling (heat pump) packages using the vapor compression
cycle - Part 2: Water chilling (heat pump) packages for household and similar
application
JB/T 7249, Refrigeration and air-conditioning equipment Terminology
a) The design scheme of the test system shall be formulated with the goal of reducing
system energy consumption and economical rationality, so as to achieve optimal
operation.
b) The test environment, refrigeration system, water system, ventilation system,
electrical system and other sub-systems (if any) and equipment of the test system
shall be installed in good condition and comply with the provisions of GB/T 7941.
c) High-efficiency and energy-saving products shall be given priority to the energy-
consuming equipment of the test system. Realize the optimal combination. Ensure
the rationalization of the energy consumption of the test system. Energy-
consuming equipment announced by the status to be phased out shall not be used.
d) The test system shall have complete technical files such as equipment ledger,
operation record, maintenance and transformation record, etc. The storage time
shall not be less than ten years.
e) The test system after modification and overhaul shall be inspected according to
GB/T 7941 and passed the acceptance check. There are corresponding acceptance
documents.
f) The supporting energy-saving facilities, energy-saving technology and energy
online monitoring system of the test system shall be put into use.
4.1.2 The inspection of energy management status shall include the following:
a) The measurement and monitoring instruments of the test system shall be fully
equipped. The meter shall be within the validity period of the verification.
b) The enterprise shall have a complete energy-saving operation management
procedure for the test system to ensure that the test system can operate
economically.
c) The operators of the test system shall pass the energy-saving operation training.
They shall master the basic energy-saving operation skills before taking up the
post.
4.2 Survey test items
The energy-utilizing condition survey test items of the test system shall include the
following contents:
a) Temperature between the test environment on the indoor (outside) side of the test
system and the inlet air status of the tested unit (if any);
b) Condition adjustment temperature change rate (if any) on the air side of the test
environment room on the indoor (outside) side of the test system;
c) Inlet (outlet) water temperature and flow rate (if any) of the tested unit’s use (heat
source) side;
d) Condition adjustment temperature change rate (if any) on the water side of the
tested unit’s use (heat source) side;
e) Consumed power of the test system;
f) Cooling (heating) consumed power of the tested unit;
g) Refrigeration (heat) capacity of the tested unit;
h) Refrigeration (heat) energy consumption coefficient of the test system.
5 Survey requirements and survey methods
5.1 Basic requirements for survey
5.1.1 The survey of energy-utilizing condition shall be carried out under the normal
operation status of the test system. The survey process shall select the tested upper limit
unit and the tested lower limit unit for testing:
a) Tested upper limit unit: Units whose nominal cooling (heating) capacity is more
than 75% of the test range of the maximum cooling (heating) capacity designed
for the test system;
b) Tested lower limit unit: Units whose nominal cooling (heating) capacity is less
than 150% of the test range of the minimum cooling (heating) capacity designed
for the test system.
5.1.2 The survey shall be carried out under the condition that the dry bulb temperature
of the outdoor atmosphere is 20°C~30°C and the wet bulb temperature is less than 26°C.
The wind speed of the outdoor air shall be less than 3 m/s when measuring. Temperature
sensors shall be protected against moisture and radiation.
5.1.3 The energy-utilizing survey cycle of the test system shall consist of two phases:
a) Survey cycle for test condition adjustment stage: It starts from the start-up of the
test system and ends when the operating condition reaches the stable operation
status of test.
b) Survey cycle for stable operation stage of test: Carry out after the test system and
the tested unit reach the stable operation status of test for 1 h. A survey cycle shall
not be less than 2 h (if the tested air-cooled unit has an unsteady heating test
condition, the data acquisition phase of the survey cycle for testing the stable
operating status shall be extended to 3 h, or the heat pump unit completes 3
defrosting cycles, whichever is shorter).
5.4.4 Test of temperature change rate of condition adjustment at the water side
5.4.4.1 The test of temperature change rate of condition adjustment at the water side
shall be carried out during the test condition adjustment stage.
5.4.4.2 During the entire survey period, survey the temperature of the inlet (outlet)
water on the use (heat source) side of the tested unit according to the test method
specified in 5.4.3. Record the initial temperature T0,w at the start-up of the test system.
Then record the inlet (outlet) water temperature Tp,w on the use (heat source) side of the
tested unit according to 5.1.4, until the test system reaches the stable operation status
of test. At this time, the temperature Tp,w of the inlet (outlet) water on the use (heat ...