Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 21087-2007 Air-to-air energy recovery equipment. In addition to a number of editorial changes, the following technical changes have been made with respect to GB/T 21087-2007:
——The requirements for the performance related to the net outdoor airflow rate in supply air are added (see 6.9 and 7.10 hereof);
——The requirements for the minimum filter level on the outdoor air side and exhaust air side of the energy recovery ventilators for outdoor air handling are added (see 5.13 hereof);
——Some test conditions are modified (see 7.1.3 hereof; 6.1.2 of Edition 2007);
——The test methods and related requirements for coefficient of energy and ratio of energy recovery are added (see 6.12, 6.13, 7.13 and 7.14 hereof);
——The performance and test methods of reciprocating energy recovery ventilators are added (see 7.12.3 and Annex G hereof);
——The alternating performance and test methods are added (see 6.24, 7.25 and Annex J hereof).
This standard was proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee on HVAC and Purification Equipment of Standardization Administration of China (SAC/TC 143).
The previous edition of the standard replaced by this standard is as follows:
——GB/T 21087-2007.
Energy recovery ventilators for outdoor air handling
1 Scope
This standard specifies the classification and identification, structure and materials, requirements, test methods, inspection rules, marking, packaging, transportation and storage of energy recovery ventilators for outdoor air handling.
This standard is applicable to energy recovery ventilators that recover exhaust energy in heating, ventilation, air conditioning and purification systems and pretreat outdoor air with cold, heat, humidity and filtration.
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 755-2019 Rotating electrical machines—Rating and performance
GB/T 1236-2017 Industrial fans—Performance testing using standardized airways
GB/T 2423.3 Environmental testing—Part 2: Testing method—Test Cab: Damp heat, steady state
GB/T 3785.1-2010 Electroacoustics—Sound level meters—Part 1: Specifications
GB 4706.1-2005 Household and similar electrical appliances—Safety—Part 1: General requirements
GB 8624 Classification for burning behavior of building materials and products
GB/T 9068 Determination of sound power levels for noise emitted by heating ventilating and air conditioning equipment—Engineering method
GB/T 14295 Air filter
GB/T 14296 Air cooling and air heating coils
GB/T 16803 Equipment of heating, ventilating, air conditioning and air cleaning terminology
GB 21551.2 Antibacterial and cleaning function for household and similar electrical appliances—Particular requirements of material
GB/T 34012 Air cleaner for ventilation system
GB 50016 Code for fire protection design of buildings
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3 Terms and definitions
For the purposes of this standard, the terms and definitions given in GB/T 16803 and the following apply.
3.1
energy recovery ventilators for outdoor air handling; ERV
equipment which takes sensible heat or total heat energy recovery component as the core and drives air flow through fan to realize the recovery of exhaust energy by outdoor air and outdoor air filtration
3.2
energy recovery components; ERC
heat exchange component that realizes sensible heat or total heat energy exchange between air and air.
3.3
total heat exchange
energy exchange in which sensible and latent heat transforms simultaneously
3.4
sensible heat exchange
energy exchange in which only sensible heat transformation occurs
3.5
standard air
air with atmospheric pressure of 101.3 kPa, dry-bulb temperature of 20°C, wet-bulb temperature of 15.8°C and density of 1.2 kg/m3
3.6
outdoor air
outdoor air entering from the outdoor air inlet
3.7
supply air
air sent out from the air supply outlet
3.8
return air
indoor air entering from the air return outlet
3.9
exhaust air
air discharged from the air outlet
3.10
rated value
performance value that ERV or ERC shall reach under the test conditions specified in this standard
3.11
supply air flow rate
volume flow of air sent out from the air supply outlet
Note: The unit is m3/h.
3.12
exhaust air flow rate
volume flow of air discharged from the exhaust outlet
Note: The unit is m3/h.
3.13
power input
sum of power input of air supply and exhaust fans and auxiliary electrical equipment (ERV) or power input of auxiliary electrical equipment (ERC)
Note: The unit is W or kW.
3.14
available pressure of ERV
difference between the total pressure of the outlet air and the total pressure of the inlet air in the ERV air supply channel and exhaust channel under the corresponding air flow rate
Note: The unit is Pa.
3.15
air pressure drop of ERC
pressure drop generated by ERC in ERC air supply channel and exhaust channel under the corresponding air flow rate
Note: The unit is Pa.
3.16
sensible exchange effectiveness
ratio of temperature difference between outdoor air inlet and supply air outlet to temperature difference between outdoor air inlet and return air inlet under corresponding air flow rate
Note: It is expressed as a percentage.
3.17
total exchange effectiveness
ratio of enthalpy difference of outdoor air inlet and supply air outlet to enthalpy difference of outdoor air inlet and return air inlet under corresponding air flow rate
Note: It is expressed as a percentage.
3.18
absolute humidity ratio exchange effectiveness
ratio of moisture content difference between outdoor air inlet and supply air outlet to moisture content difference between outdoor air inlet and return air inlet under corresponding air flow rate
Note: It is expressed as a percentage.
3.19
ratio of energy recovery of ERC
ratio of energy recovered by ERC to the electric energy consumed during energy recovery
Note: It is expressed as a percentage.
3.20
coefficient of energy of ERV
ratio of the sum of the total energy exchanged between the outdoor and exhaust air flows and the energy possessed by the air flow to the power input of ERV.
Note: It is expressed as a percentage.
3.21
external air leakage ratio
ratio of the air flow rate leaking in and out from the gap of ERV or ERC shell to the average flow rate of rated air supply and exhaust
Note: It is expressed as a percentage.
3.22
internal exhaust air leakage ratio
ratio of the air flow rate leaked from the exhaust air side into the outdoor air side in the ERV or ERC to the rated air supply flow rate
Note: It is expressed as a percentage.
3.23
net outdoor airflow rate in supply air
volume flow of outdoor air contained in the supply air of ERV or ERC
Note: The unit is m3/h.
3.24
net outdoor airflow ratio in supply air
ratio of the volume flow of outdoor air contained in the supply air of ERV or ERC to the supply air flow rate
Note: It is expressed as a percentage.
3.25
energy-saving controller
energy saving operation control device with monitoring and control function equipped by ERV
4 Classification and identification
4.1 Classification
4.1.1 The code of energy recovery ventilators for outdoor air handling is "ERV", and the code of energy recovery components is "ERC".
4.1.2 See Table 1 for the classification and corresponding codes of ERV and ERC.
Table 1 Classification and corresponding codes of ERV and ERC
Name Classification mode Category Code
Energy recovery ventilators for outdoor air handling (ERV) By installation mode Floor type LD
Hoisting type DZ
Wall-mounted type BG
Window type CS
Embedded type QS
Energy recovery component (ERC) By type of energy recovery Total heat type QR
Sensible heat type XR
By operating state Rotary type (including rotary wheel type, channel wheel type, etc.) XZ
Static type (including plate-fin type, heat pipe type, liquid circulation type, etc.) JZ
Reciprocating WF
By the shape of air inlet and outlet sections Circular Diameter × thickness × channel height
Rectangle Length × width × thickness × channel height
By fire resistance Fire retardant type NR
Non-flame retardant type —
By antibacterial properties Antibacterial type KJ
Ordinary type —
4.2 Labels
4.2.1 ERV label
Example:
For the total heat, hoisting type, rotary type, non-flame retardant and ordinary antibacterial energy recovery ventilators for outdoor air handling with rated supply air flow rate of 300 m3/h, it is labeled as:
ERV-300-QR-DZ-XZ
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4.2.2 ERC label
Example:
For sensible, rotary, flame retardant and ordinary antibacterial energy recovery components with rotary wheel diameter of 300 mm, thickness of 100 mm and channel height of 2 mm, it is labeled as:
ERC-?300×100×2-XR-XZ-NR
For the total heat, static, non-flame retardant and ordinary antibacterial energy recovery components with air inlet and outlet section size of 300 mm long, 250 mm wide, 200 mm thick and channel height of 2 mm, it is labeled as:
ERC-300×250×200×2-QR-JZ
5 Structure and materials
5.1 ERV and ERC shall be manufactured according to drawings and technical documents.
5.2 The interior of ERV and ERC shall be clean and free of sundries.
5.3 The surface of ERV and ERC plastic parts shall be flat, uniform in color, free from cracks, bubbles, etc. The plastic parts shall be resistant to aging.
5.4 Anti-rust measures shall be taken for sheet metal parts and spare parts of ERV and ERC.
5.5 The metal shell of ERV and ERC outdoor parts shall be treated with anti-rust treatment, and non-metallic materials shall be resistant to aging.
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5.6 ERC’s thermal insulation material shall be non-toxic and odorless, and the paste shall be flat and firm.
5.7 The fire resistance characteristics of flame retardant ERC shall meet the relevant requirements of GB 50016 and shall be classified according to the relevant requirements of GB 8624.
5.8 The wiring connection between ERV and ERC shall be neat and firm, and shall be reliably earthed. Insulating sleeve or other protective measures shall be used for wire perforation and plug connection, and metal hose shall be used for protection of exposed wires outside the shell.
5.9 Electrical control components shall act sensitively and reliably.
5.10 For ERV or ERC with access doors, the access doors shall be tight and flexible, and the access doors accessible to personnel shall be opened both inside and outside.
5.11 ERV shall ensure the smooth removal of condensate during heat exchange.
5.12 The ERV shall be equipped with surface air cooler and heater that meet the requirements of GB/T 14296.
5.13 The ERV shall be equipped with air filter that meets the relevant requirements of GB/T 14295. Air filters with filtration efficiency not lower than C1 shall be arranged on the windward side of the exhaust air side of the heat exchange component (heat exchange core), and air filters with filtration efficiency not lower than Z1 shall be arranged on the windward side of the outdoor air side. The filters shall be easily replaced or cleaned.
5.14 Antibacterial ERC shall meet the relevant requirements of GB 21551.2.
5.15 ERV should be equipped with an energy-saving operation controller, which can reduce the energy consumption by adjusting fan speed and bypassing outdoor air and exhaust air under the condition of meeting the requirements of transmission and distribution air flow rate of outdoor air and exhaust air according to indoor and outdoor air conditions and motor power consumption.
5.16 The independently installed ERV outdoor air inlet and exhaust air outlet should be equipped with insulated airtight air valve.
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6 Requirements
6.1 Appearance
The outer surface of the ventilator shall be smooth and the color tone shall be consistent, without obvious scratches, rust spots, indentations, flow marks, blisters and peeling. All kinds of marks and nameplates pasted on the outer surface shall be firm and in an obvious position.
6.2 Start-up and operation
The parts of ERV and ERC shall be free from looseness, noise and overheating.
6.3 Air flow rate
The measured value of supply air flow rate and exhaust air flow rate shall not be less than 95% of the rated value.
6.4 Available pressure
The measured available pressures on the outdoor air side and exhaust air side of ERV shall not be less than 95% of the rated value.
6.5 Static pressure drop
The measured static pressure drops on the outdoor air side and exhaust air side of ERC shall not be greater than 105% of the rated value.
6.6 Power input
For ventilators with rated power input not greater than 30 W, the measured value of power input shall not be greater than 120% of the rated value; for ventilators with rated power input greater than 30 W, the measured power input shall not be greater than 110% of the rated value.
6.7 Internal exhaust air leakage ratio
For ERV and ERC with supply air flow rate greater than 3,000 m3/h, the measured value of internal exhaust air leakage ratio shall not be greater than 10%, and shall not be greater than "rated value + 1%".
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6.8 External air leakage ratio
For ERV and ERC with supply air flow rate greater than 3,000 m3/h, the measured value of external air leakage ratio shall not be greater than 3%.
6.9 Net outdoor airflow rate in supply air
The measured value of net outdoor airflow rate in supply air shall not be less than 95% of the rated value.
6.10 Net outdoor airflow ratio in supply air
For ERV and ERC with supply air flow rate not greater than 3,000 m3/h, the measured value of net outdoor airflow ratio in supply air shall not be less than 90%, and shall not be less than "rated value – 1%".
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and identification
5 Structure and materials
6 Requirements
7 Test methods
8 Inspection rules
9 Marking, packaging, transportation and storage
Annex A (Normative) Test method for air flow rate, static pressure drop, available pressure and power input
Annex B (Normative) Field test method for energy recovery performance
Annex C (Normative) Test method for internal exhaust air leakage ratio
Annex D (Normative) Test method for external air leakage ratio
Annex E (Normative) Test method for net outdoor airflow rate in supply air and net outdoor airflow ratio in supply air
Annex F (Normative) Test method for exchange effectiveness, coefficient of energy and ratio of energy recovery
Annex G (Normative) Test method for performance of reciprocating energy recovery ventilators
Annex H (Normative) Test method for condensation and condensed water
Annex I (Normative) Test method for noise
Annex J (Normative) Test method for alternating performance
熱回收新風(fēng)機組
1 范圍
本標(biāo)準(zhǔn)規(guī)定了熱回收新風(fēng)機組的分類與標(biāo)記、結(jié)構(gòu)和材料、要求、試驗方法、檢驗規(guī)則、標(biāo)志、包裝、運輸和貯存等。
本標(biāo)準(zhǔn)適用于在供暖、通風(fēng)、空調(diào)、凈化系統(tǒng)中回收排風(fēng)能量，對新風(fēng)進(jìn)行冷、熱、濕及過濾預(yù)處理的新排風(fēng)通風(fēng)機組。
2 規(guī)范性引用文件
下列文件對于本文件的應(yīng)用是必不可少的。凡是注日期的引用文件，僅注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。
GB/T 755—2019 旋轉(zhuǎn)電機 定額和性能
GB/T 1236—2017 工業(yè)通風(fēng)機 用標(biāo)準(zhǔn)化風(fēng)道性能試驗
GB/T 2423.3 環(huán)境試驗 第2部分：試驗方法 試驗Cab：恒定濕熱試驗
GB/T 3785.1—2010 電聲學(xué) 聲級計 第1部分：規(guī)范
GB 4706.1—2005 家用和類似用途電器的安全 第1部分：通用要求
GB 8624 建筑材料及制品燃燒性能分級
GB/T 9068 采暖通風(fēng)與空氣調(diào)節(jié)設(shè)備噪聲聲功率級的測定 工程法
GB/T 14295 空氣過濾器
GB/T 14296 空氣冷卻器與空氣加熱器
GB/T 16803 供暖、通風(fēng)、空調(diào)、凈化設(shè)備術(shù)語
GB 21551.2 家用和類似用途電器的抗菌、除菌、凈化功能 抗菌材料的特殊要求
GB/T 34012 通風(fēng)系統(tǒng)用空氣凈化裝置
GB 50016 建筑設(shè)計防火規(guī)范
3 術(shù)語和定義
GB/T 16803界定的以及下列術(shù)語和定義適用于本文件。
3.1
熱回收新風(fēng)機組 energy recovery ventilators for outdoor air handling；ERV
以顯熱或全熱回收裝置為核心，通過風(fēng)機驅(qū)動空氣流動實現(xiàn)新風(fēng)對排風(fēng)能量的回收和新風(fēng)過濾的設(shè)備。
3.2
熱回收裝置 energy recovery components；ERC
實現(xiàn)空氣和空氣間顯熱或全熱能量交換的換熱部件。
3.3
全熱交換 total heat exchange
同時發(fā)生顯熱和潛熱變換的能量交換。
3.4
顯熱交換 sensible heat exchange
只發(fā)生顯熱變換的能量交換。
3.5
標(biāo)準(zhǔn)空氣狀態(tài) standard air
大氣壓力為101.3 kPa，干球溫度為20℃、濕球溫度為15.8℃，密度為1.2 kg/m3的空氣。
3.6
新風(fēng) outdoor air
從新風(fēng)口進(jìn)入的室外空氣。
3.7
送風(fēng) supply air
從送風(fēng)口送出的空氣。
3.8
回風(fēng) return air
從回風(fēng)口進(jìn)入的室內(nèi)空氣。
3.9
排風(fēng) exhaust air
從排風(fēng)口排出的空氣。
3.10
額定值 rated value
在本標(biāo)準(zhǔn)規(guī)定的試驗工況下，ERV或ERC應(yīng)能達(dá)到的性能值。
3.11
送風(fēng)量 supply air flow rate
從送風(fēng)口送出的空氣體積流量。
注：單位為m3/h。
3.12
排風(fēng)量 exhaust air flow rate
從排風(fēng)口排出的空氣體積流量。
注：單位為m3/h。
3.13
輸入功率 power input
送、排風(fēng)機和輔助用電設(shè)備輸入功率之和(ERV)或輔助用電設(shè)備的輸入功率(ERC)。
注：單位為W或kW。
3.14
ERV機外余壓 available pressure of ERV
ERV送風(fēng)通道及排風(fēng)通道在對應(yīng)風(fēng)量下，出口空氣全壓與進(jìn)口空氣全壓之差。
注：單位為Pa。
3.15
ERC壓力損失 air pressure drop of ERC
ERC送風(fēng)通道及排風(fēng)通道在對應(yīng)風(fēng)量下，ERC產(chǎn)生的壓降。
注：單位為Pa。
3.16
顯熱交換效率 sensible exchange effectiveness
對應(yīng)風(fēng)量的新風(fēng)進(jìn)口、送風(fēng)出口溫差與新風(fēng)進(jìn)口、回風(fēng)進(jìn)口溫差之比。
注：以百分?jǐn)?shù)表示。
3.17
全熱交換效率 total exchange effectiveness
對應(yīng)風(fēng)量的新風(fēng)進(jìn)口、送風(fēng)出口焓差與新風(fēng)進(jìn)口、回風(fēng)進(jìn)口焓差之比。
注：以百分?jǐn)?shù)表示。
3.18
濕量交換效率 absolute humidity ratio exchange effectiveness
對應(yīng)風(fēng)量的新風(fēng)進(jìn)口、送風(fēng)出口含濕量差與新風(fēng)進(jìn)口、回風(fēng)進(jìn)口含濕量差之比。
注：以百分?jǐn)?shù)表示。
3.19
ERC能量回收比 ratio of energy recovery of ERC
ERC回收的能量與能量回收過程中消耗的電能之比。
注：以百分?jǐn)?shù)表示。
3.20
ERV能效系數(shù) coefficient of energy of ERV
新排風(fēng)氣流間交換的總能量和氣流流動具備的能量之和與ERV的輸入功率之比。
注：以百分?jǐn)?shù)表示。
3.21
外部漏風(fēng)率 external air leakage ratio
由ERV或ERC外殼縫隙漏入、漏出的風(fēng)量與額定送、排風(fēng)量均值之比。
注：以百分?jǐn)?shù)表示。
3.22
內(nèi)部漏風(fēng)率 internal exhaust air leakage ratio
在ERV或ERC內(nèi)部，由排風(fēng)側(cè)漏入新風(fēng)側(cè)的風(fēng)量與額定送風(fēng)量之比。
注：以百分?jǐn)?shù)表示。
3.23
送風(fēng)凈新風(fēng)量 net outdoor airflow rate in supply air
ERV或ERC的送風(fēng)中含有的室外空氣體積流量。
注：單位為m3/h。
3.24
送風(fēng)凈新風(fēng)率 net outdoor airflow ratio in supply air
ERV或ERC的送風(fēng)中含有的室外空氣體積流量與送風(fēng)量之比。
注：以百分?jǐn)?shù)表示。
3.25
節(jié)能運行控制器 energy-saving controller
ERV自帶的、具有監(jiān)測控制功能的節(jié)能運行控制裝置。
4 分類與標(biāo)記
4.1 分類
4.1.1 熱回收新風(fēng)機組代號為“ERV”，熱回收裝置代號為“ERC”。
4.1.2 ERV和ERC的分類及相應(yīng)代號見表1。
表1 ERV和ERC的分類及相應(yīng)代號
名稱 分類方式 類別 代號
熱回收新風(fēng)機組(ERV) 按安裝方式分 落地式 LD
吊裝式 DZ
壁掛式 BG
窗式 CS
嵌入式 QS
熱回收裝置(ERC) 按熱回收類型分 全熱型 QR
顯熱型 XR
按工作狀態(tài)分 旋轉(zhuǎn)式(含轉(zhuǎn)輪式、通道輪式等) XZ
靜止式(含板翅式、熱管式、液體循環(huán)式等) JZ
往復(fù)式 WF
按進(jìn)、出風(fēng)斷面形狀分 圓形 直徑×厚度×通道高度
長方形 長×寬×厚度×通道高度
按防火性能分 難燃型 NR
非阻燃型 —
按抗菌性能分 抗菌型 KJ
普通型 —
4.2 標(biāo)記
4.2.1 ERV標(biāo)記
內(nèi)置ERC抗菌性能
內(nèi)置ERC防火性能
內(nèi)置ERC工作狀態(tài)
安裝方式
熱回收類型
送風(fēng)量額定值，m3/h
熱回收新風(fēng)機組(ERV)
示例：
額定送風(fēng)量為300 m3/h、全熱、吊裝式、旋轉(zhuǎn)式、非阻燃和普通抗菌的熱回收新風(fēng)機組，標(biāo)記為：
ERV-300-QR-DZ-XZ
4.2.2 ERC標(biāo)記
抗菌性能
防火性能
工作狀態(tài)
熱回收類型
斷面形狀
熱回收裝置(ERC)
示例：
轉(zhuǎn)輪直徑為300 mm、厚度為100 mm、通道高度2 mm的顯熱、旋轉(zhuǎn)式、難燃和普通抗菌的熱回收裝置，標(biāo)記為：
ERC-φ300×100×2-XR-XZ-NR
進(jìn)、出風(fēng)斷面尺寸為長300 mm、寬250 mm、厚度200 mm、通道高度2 mm的全熱、靜止式、非阻燃和普通抗菌的熱回收裝置，標(biāo)記為：
ERC-300×250×200×2-QR-JZ
5 結(jié)構(gòu)和材料
5.1 ERV和ERC應(yīng)按圖紙和技術(shù)文件制造。
5.2 ERV和ERC內(nèi)部應(yīng)整潔干凈、無雜物。
5.3 ERV和ERC的塑料件表面應(yīng)平整、色澤均勻，不應(yīng)有裂痕、氣泡等，塑料件應(yīng)耐老化。
5.4 ERV和ERC的鈑金件、零配件等應(yīng)有防銹措施。
5.5 ERV和ERC室外部分的金屬外殼應(yīng)作防銹處理，非金屬材料應(yīng)具有防老化性能。
5.6 ERC隔熱保溫材料應(yīng)無毒、無異味，粘貼應(yīng)平整、牢固。
5.7 難燃型ERC的防火特性應(yīng)滿足GB 50016的相關(guān)要求，并應(yīng)按GB 8624的相關(guān)要求給出分級。
5.8 ERV和ERC的線路連接應(yīng)整齊牢固，并應(yīng)有可靠的接地，電線穿孔和接插頭應(yīng)采用絕緣套管或其他保護(hù)措施，殼體外外露電線宜采用金屬軟管保護(hù)。
5.9 電氣控制元器件應(yīng)動作靈敏、可靠。
5.10 對于有檢修門的ERV或ERC，其檢修門應(yīng)嚴(yán)密、靈活，人員能進(jìn)入的檢修通道門應(yīng)內(nèi)外均能開啟。
5.11 ERV應(yīng)確保熱交換時凝結(jié)水排除暢通。
5.12 ERV配置的表面空氣冷卻器和加熱器應(yīng)滿足GB/T 14296的相關(guān)要求。
5.13 ERV配置的空氣過濾器應(yīng)滿足GB/T 14295的相關(guān)要求，在熱交換部件(換熱芯體)排風(fēng)側(cè)迎風(fēng)面應(yīng)布置過濾效率不低于C1的空氣過濾器，在新風(fēng)側(cè)迎風(fēng)面應(yīng)布置過濾效率不低于Z1的空氣過濾器，過濾器應(yīng)可以便捷地更換或清洗。
5.14 抗菌型ERC應(yīng)滿足GB 21551.2的相關(guān)要求。
5.15 ERV宜設(shè)置節(jié)能運行控制器，在滿足新風(fēng)排風(fēng)輸配風(fēng)量要求的條件下，可根據(jù)室內(nèi)外空氣狀態(tài)、電機功耗等情況，通過調(diào)整風(fēng)機轉(zhuǎn)速、旁通新風(fēng)排風(fēng)等手段，實現(xiàn)ERV能耗降低。
5.16 獨立安裝的ERV新風(fēng)口和排風(fēng)口宜配置保溫密閉風(fēng)閥。
6 要求
6.1 外觀
機組外表面應(yīng)光潔，色調(diào)應(yīng)一致，無明顯刮傷、銹斑、壓痕、流痕、氣泡和剝落。外表面所粘貼的各種標(biāo)識、銘牌應(yīng)牢固，位置應(yīng)明顯。
6.2 啟動與運轉(zhuǎn)
ERV和ERC的零部件應(yīng)無松動、雜音和過熱等異常現(xiàn)象。
6.3 風(fēng)量
送風(fēng)量和排風(fēng)量的實測值不應(yīng)小于額定值的95％。
6.4 機外余壓
ERV的新風(fēng)側(cè)和排風(fēng)側(cè)的機外余壓實測值不應(yīng)小于額定值的95％。
6.5 靜壓損失
ERC的新風(fēng)側(cè)和排風(fēng)側(cè)的靜壓損失實測值不應(yīng)大于額定值的105％。
6.6 輸入功率
對于額定輸入功率不大于30 W的機組，其輸入功率實測值不應(yīng)大于額定值的120％；對于額定輸入功率大于30 W的機組，其輸入功率實測值不應(yīng)大于額定值的110％。
6.7 內(nèi)部漏風(fēng)率
送風(fēng)量大于3 000 m3/h的ERV和ERC，其內(nèi)部漏風(fēng)率實測值不應(yīng)大于10％，且不應(yīng)大于“額定值＋1％”。
6.8 外部漏風(fēng)率
送風(fēng)量大于3 000 m3/h的ERV和ERC，其外部漏風(fēng)率實測值不應(yīng)大于3％。
6.9 送風(fēng)凈新風(fēng)量
送風(fēng)凈新風(fēng)量實測值不應(yīng)小于額定值的95％。
6.10 送風(fēng)凈新風(fēng)率
送風(fēng)量不大于3 000 m3/h的ERV和ERC，其送風(fēng)凈新風(fēng)率實測值不應(yīng)小于90％，且不應(yīng)小于“額定值—1％”。
6.11 交換效率
交換效率實測值不應(yīng)小于額定值的90％，且應(yīng)滿足表2要求。
