JB/T 5151-1991 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

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 ventilationbZxz.net
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 device
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
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