1 Scope
This part of GB/T 25127 specifies the terms and definitions, type and basic parameters, requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of low ambient temperature air source motor-driven heat pump (water chilling) packages for household and similar application (hereinafter referred to as "packages").
This part is applicable to heat pump (water chilling) packages with air as the heat (cool) source and cooling capacity not greater than 50kW as well as that can prepare hot water at the ambient temperature not less than -20℃; other similar packages may also refer to the provisions of this part.
2 Normative References
The following references contain provisions which, through reference in this part of GB/T 25175, constitute provisions of this part. For dated references, their subsequent amendments to (excluding any amendment), or revisions of, any of these publications do not apply in this part. However, parties coming to an agreement according to this part are encouraged to study whether the latest editions of these references are applicable. For undated references, the latest editions apply.
GB/T 1720 Method of Test for Adhesion of Paint Films
GB/T 2423.17 Basic Environmental Testing Procedures for Electric and Electronic Products—Part 2: Test Method—Test Ka: Salt Mist (GB/T 2423.17-2008, IEC 60068-2-11:1981, IDT)
GB/T 10870 The Methods of Performance Test for Positive Displacement & Centrifugal Water-chilling Units and Heat Pump
GB/T 13306 Plates
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB/T 17758 Unitary Air Conditioners
GB/T 18430.1-2007 Water Chilling (Heat Pump) Packages Using the Vapor Compression Cycle—Part 1: Water Chilling (Heat Pump) Packages for Industrial & Commercial and Similar Application
GB/T 18430.2-2007 Water Chilling (Heat Pump) Packages Using the Vapor Compression Cycle—Part 2: Water Chilling (Heat Pump) Packages for Household and Similar Application
GB 19577 The Minimum Allowable Values of the Energy Efficiency and Energy Efficiency Grades for Water Chillers
GB 25131 Safety Requirements for Water Chillers (Heat Pump) Using the Vapor Compression Cycle
JB/T 4330-1999 Determination of Noise Emitted by Refrigerating and Air Conditioning Equipments
JB/T 7249 Terminology of Refrigeration Equipment
3 Terms and Definitions
For purposes of this part, the terms and definitions established in JB/T 7249 as well as the following ones apply.
3.1
Lower ambient temperature air source heat pump (water chilling) packages
The heat pump (water chilling) packages that can prepare hot water at the ambient temperature not less than -20℃ with motor-driven vapor compression cooling cycle and air as the heat (cool) source.
3.2
Coefficient of performance [COP (COPh, COPc)]
The ratio of the packages heating (cooling) capacity to the general input electric power in the same unit under the nominal conditions specified in Table 1.
3.3
Integrated part load value (IPLV)
The part load efficiency index of hot (cool) water packages for air conditioning expressed by a single value, which is calculated via Formulae (1) and (2) based on the part load performance coefficient value under part load condition specified in Table 2 according to the weight factor of operating time under specific load of packages.
Integrated part load value for heating [IPLV(H)]:
(1)
Integrated part load value for cooling [IPLV(C)]:
(2)
Where,
A0(A1)—COPc (COPh) in case of 100% load, in kW/kW;
B0(B1)—COPc (COPh) in case of 75% load, in kW/kW;
C0(C1)—COPc (COPh) in case of 50% load, in kW/kW;
D0(D1)—COPc (COPh) in case of 25% load, in kW/kW.
Note 1: calculation of part load percentage is based on nominal cooling (heating) capacity.
Note 2: IPLV represents the mean operation condition of single packages, but may not represent a specific engineering installation example.
Note 3: calculation of IPLV(H) takes Beijing as the typical city and IPLV(H) of other typical cities refer to Appendix A of "Low Ambient Temperature Air Source Heat Pump (Water Chilling) Packages—Part 1: Heat Pump (Water Chilling) Packages for Industrial & Commercial and Similar Application" (GB/T 25127.1-2010).
3.4
Continuous heating cycle
A complete process of heating and defrosting from the beginning of last heating (end of defrosting) to the end of this defrosting in the heating operation mode.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Type and Basic Parameters
5 Requirements
6 Test Method
7 Inspection Rules
8 Marking, Packaging, Transportation and Storage
