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GB/T 37227 consists of the following five parts under the general title Evaluation method and testing method for energy performance of refrigerating systems:
——Part 1: Energy-storage air conditioning systems;
——Part 2: Multi-energy complementary heating and air conditioning systems;
——Part 3: Supermarket refrigeration systems;
——Part 4: Heat pump system based on low-grade heat energy utilization;
——Part 5: Volatile organic compounds (VOCs) recovery refrigeration system.
This is Part 1 of GB/T 37227.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by and is under the jurisdiction of the National Technical Committee on Energy System of Standardization Administration of China (SAC/TC 459).
Evaluation method and testing method for energy performance of refrigerating systems—
Part 1: Energy-storage air conditioning systems
1 Scope
This part of GB/T 37227 specifies the relevant terms, basic requirements, performance rating methods, testing and calculation methods, etc. of air conditioning and refrigerating systems using energy-storage technology, in which performance rating is carried out from the aspects of energy efficiency and economy.
This part is applicable to various forms of energy storage air conditioning systems such as ice storage and water storage, which are designed with daily cyclical period, including cool storage and refrigeration chillers, and cool storage circulating pumps, discharge circulating pumps, cooling circulating pumps, cooling pumps and cooling tower fans, etc. operating in the process of cool storage, discharge and refrigeration. Terminal fans of the air conditioning system are not included.
This standard is not applicable to air-cooled refrigerating unit for the time being.
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 7778-2017 Number designation and safety classification of refrigerants
GB/T 10870-2014 The methods of performance test for water chilling (heat pump) packages using the vaper compression cycle
GB/T 17758-2010 Unitary air conditioners
GB/T 17981-2007 Economic operation of air conditioning systems
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 19412-2003 Method of measurement & rating of air conditioning system with thermal storage
GB 25131-2010 Safety requirements for water chillers (heat pump) using the vapor compression cycle
GB/T 26194-2010 Method of testing the performance of cool storage systems
JGJ 158-2008 Technical specification for cool storage air-conditioning system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19412-2003, GB/T 17981-2007, GB/T 26194-2010 and JGJ 158-2008, as well as the following, apply.
3.1
energy performance of energy-storage air conditioning systems during designed cyclical period
ratio of the total input energy (usually electricity) to the energy-storage air conditioning system during a designed cyclical period (usually 24 h), to the total refrigerating output of the energy-storage air conditioning system in the same period
Note: The unit is kWhe/kWhc.
3.2
typical day's condition
condition that reflects the typical operating conditions through performance rating for the energy-storage air conditioning system by field tests, under the outdoor weather conditions close to the local summer air conditioning design, when the energy-storage air conditioning system is in normal cycle
3.3
annual average terminal energy performance of refrigeration & thermal storage system
ratio of the total terminal energy (usually electricity) input to the energy-storage air conditioning system in a complete cooling season (no more than 12 months), to the total refrigerating output of the energy-storage air conditioning system in the same period
Note: The unit is kWhe/kWhc.
3.4
economic performance of energy-storage air conditioning systems during designed cyclical period (current electricity charge)
ratio of the total cost of the terminal energy (usually electricity) input into the energy-storage air conditioning system (calculated by the actual electricity charge implemented during the performance rating of the energy-storage air conditioning system) during designed cyclical period, to the total refrigerating output of the energy-storage air conditioning system in the same period
Note: the unit is RMB/kWhc.
3.5
annual average economic performance of energy-storage air conditioning systems (current electricity charge)
ratio of the total cost of the terminal energy (usually electricity) input into the energy-storage air conditioning system (calculated by the current actual electricity charge of the project where the energy-storage air conditioning system is located) in a cooling season, to the total refrigerating output of the energy-storage air conditioning system in the same period
Note: the unit is RMB/kWhc.
3.6
three points-four levels for performance rating
scale for performance rating of energy-storage air conditioning systems, given by the “three points-four levels” method, i.e. the specific values of "excellent", "good" and "moderate” specified in this standard. When the actual performance value of the energy-storage air conditioning system is compared with the specific values of "excellent", "good" and "moderate" specified in this standard, if it is better than the corresponding value of "excellent" point, the performance is rated as "excellent"; if it is lower than the corresponding value of "moderate" point, the performance is rated as "poor"; if it is between "excellent" and "good", the performance is rated as "good"; if it is between "good" and "moderate", the performance is rated as "moderate".
4 Basic requirements
4.1 Cool storage and refrigeration chillers shall meet the requirements of GB/T 18430.1-2007 and GB 25131-2010.
4.2 The installation of energy-storage air conditioning system shall conform to JGJ 158-2008.
5 Performance rating
5.1 Performance rating for refrigerating host of energy-storage air conditioning system
The performance rating for the refrigerating host of the energy-storage air conditioning system is mainly to evaluate the performance of the ice storage dual mode host. The coefficient of performance (COP) of the refrigerating host under air-conditioning and cool storage conditions shall not be less than the "constraint recommended value" as specified in Table 1, and should be higher than the "guidance value".
For the refrigerating host used for water storage, refer to the guidance value and constraint recommended value requirements under "air conditioning condition".
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Basic requirements
5 Performance rating
6 Testing method
