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JB/T 5151-1991 Types and basic parameters of air heat recovery devices for air conditioning and ventilation
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Standard ID:
JB/T 5151-1991
Standard Name: Types and basic parameters of air heat recovery devices for air conditioning and ventilation
This standard specifies the types and basic parameters of air-to-air heat recovery devices for air conditioning and ventilation. This standard applies to air-to-air heat recovery devices with an exhaust side inlet dry bulb temperature not exceeding 65°C and a dust concentration not exceeding 0.3mg/m2. JB/T 5151-1991 Types and basic parameters of air-to-air heat recovery devices for air conditioning and ventilation JB/T5151-1991 Standard download decompression password: www.bzxz.net
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Mechanical Industry Standard of the People's Republic of China Types and basic parameters of air-to-air heat recovery devices for air conditioning and ventilation 1 Subject content and scope of application This standard specifies the types and basic parameters of air-to-air heat recovery devices for air conditioning and ventilation. JB/T 5151--91 This standard applies to air-to-air heat recovery devices with an inlet global temperature of no more than 65°C and a dust concentration of no more than 0.3mg/m3 on the exhaust side. 2 Terminology 2.1 Air-to-air heat recovery devicebzxZ.net A device that transfers heat from one airflow to another for energy saving. 2.2 Rotary heat exchanger An air-to-air heat recovery device that realizes the heat (total heat or sensible heat) exchange between two airflows through the heat storage and heat release effects of its materials during the rotation of the wheel body. 2.3 Plate heat exchanger An air-to-air heat recovery device with no moving parts and in which two air flows exchange heat (total heat or sensible heat) through the heat exchange surface between the flow channels. 2.3.1 Flat plate heat exchanger A plate heat exchanger with a flat plate, a concave-convex plate or a plate with other corrugated shapes as the heat exchange surface. 2.3.2 Plate-fin heat exchanger A plate heat exchanger with a smooth flat plate and fins placed therein as the heat exchange surface. 2.4 Heat pipe heat exchanger An air-to-air heat recovery device composed of heat pipes. 2.5 Heat recovery loop An air-to-air heat recovery device composed of two coils placed in two air flow channels, connecting pipes and a circulating water pump. Rated air volume of heat recovery device The air volume flowing through the exhaust side of the heat recovery device per unit time under rated conditions (m3/h). 2.7 Leakage rate The percentage of exhaust volume in the conveyed air under rated conditions. 3 Type 3.7 The type of heat recovery device shall be as specified in Table 1. Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on July 22, 1991 and implemented on July 1, 1992 Rotary heat exchanger Plate heat exchanger Model representation method Heat pipe heat exchanger Heat recovery loop JB/T5151—91 Rotary sensible heat exchanger Rotary total heat exchanger Plate heat exchanger Heater Plate-fin sensible heat exchanger Plate-fin total heat exchanger The model of the heat recovery device consists of uppercase Chinese pinyin and Arabic numerals, and the specific representation method is as follows: O Specification code: as specified in Table 2 Type code: as specified in Table 1 Model example: zQ-10 represents a rotary total heat exchanger with a rated air volume of 10000m°/h. BX-5 represents a plate-fin sensible heat exchanger with a rated air volume of 5000m*/h. 4 Basic parameters 4.1 The rated air volume of the heat recovery device should preferably adopt the series shown in Table 2. Table 2 Rated air volume Rated air volume 4.2 The rated operating conditions for determining the heat exchange efficiency, air resistance and leakage rate of the heat recovery device shall be as specified in Table 3. Table 3 Inlet air temperature on supply side Inlet air temperature on exhaust side Rated air volume 100 000 125000 160000 Headwind speed on exhaust side, m/s Inlet and exhaust mass flow ratio Static pressure difference between inlet and exhaust sides.Pa JB/T 5151--91 Continued Table 3 4.3 The performance of the heat recovery device under rated conditions shall comply with the provisions of Table 4. Table 4 Heat transfer efficiency Heat recovery device type Rotary sensible heat exchanger Rotary total heat exchanger Flat plate heat exchanger Plate fin sensible heat exchanger Plate fin total heat exchanger Heat recovery loop Heat pipe heat exchanger Conditional parameters 0~600 Air resistance Note: When there are requirements for the content of harmful gases in the incoming air, the leakage rate shall be 3% or determined according to the process requirements. Additional remarks: This standard was proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by Harbin No. 2 Air Conditioning Machine Factory and Harbin Institute of Architecture and Engineering. The main drafters of this standard are Chen Yang and Zhu Hongyi. Pa Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.