標準號：BS EN 308-1997
中文標準名稱：熱交換器.確定空氣對空氣和煙道燃氣熱量回收裝置性能的試驗程序
英文標準名稱：Heat exchangers - Test procedures for establishing the performance of air to air and flue gases heat recovery devices
標準類型：J75
發布日期：1997/7/15 12:00:00
實施日期：1997/7/15 12:00:00
中國標準分類號：J75
國際標準分類號：27.060.30
適用范圍：This European Standard specifies methods to be used for laboratory testing of air-to-air heat recovery devices or those recovering heat from flue gases of heating appliances in buildings (except process-process applications) to obtain rating data. It gives test requirements and procedures for performing such tests and specifies input criteria required for tests to verify performance data given by the manufacturer. For the purposes of this standard, the term exhaust air may also be taken to mean the products of combustion. This European Standard is intended to be used as a basis for testing heat recovery devices for HVAC systems, which as specified in prEN 247 consist of the heat exchanger itself installed in a casing having the necessary air duct connecting elements and in some cases the fans and pumps, but without any additional components of the HVAC system. This European Standard is applicable to the following categories of heat exchangers: Category Ⅰ Recuperators Category Ⅱ With intermediary heat transfer medium Category Ⅱa: without phase-change Category Ⅱb: with phase-change (heat pipe,..) Category Ⅲ Regenerators (containing accumulating mass) Category Ⅱ1a: non hygroscopic Category Ⅱ1b: hygroscopic Heat recovery devices with exchangers and intermediary heat transfer medium without phase-change (category Ⅱa) are to be tested as one unit including pump and pipe system between the coils. This European Standard prescribes test methods for determining: a) the external leakage; b) the internal leakage of exhaust air to the supply air within the device at a given pressure difference between air ducts, for recovery devices of categories Ⅰ and Ⅱ; c) the carry-over of exhaust air to the supply air in recovery devices of category Ⅲ; d) the temperature and humidity ratios; e) the pressure drop of exhaust air and supply air sides.