-50% de descuento* Si compras la misma norma UNE en distintos idiomas. * Dto. sobre el pvp inferior. Ver condiciones

DIN EN 308:2023-06

Heat exchangers - Test procedures for establishing performance of air to air heat recovery components; German version EN 308:2022

Fecha edición: 2023-06-01
En Vigor
Idiomas disponibles: Inglés, Alemán
Resumen: This document specifies methods to be used for testing of air-to-air heat recovery components (HRC). The main purpose of the HRC is to exchange heat between exhaust air and supply air in order to save energy, which results in - preheat or heat, and/or - precool or cool supply air in ventilation systems or air conditioning systems. Optionally HRC can exchange air humidity between exhaust and supply air. The HRC contains the heat exchangers and all necessary features and auxiliary devices for the exchange of sensible heat and (if available) air humidity between exhaust air and supply air. The HRC will be installed in casings or ducts. If fans are part of the test unit, the effect of the fan power on the measured values will be corrected. This document specifies procedures and input criteria required for tests to determine the performance of a HRC at one or several test conditions, each of them with continuous and stationary air flows, air temperatures and humidities at both inlet sides. Three different test types are covered: - Test type A, Laboratory testing of HRC installed in test casings (A1) or a HRC sections (A2); - Test type B, Laboratory testing of HRC installed in non-residential ventilation units in design configuration; - Test type C, on-site (field) testing of HRC in non-residential ventilation units (C1) or a HRC sections (C2) in operation configuration. This document is applicable to recuperators, regenerators, and HRC with intermediary heat transfer medium. This document prescribes test methods for determining: 1) the temperature and humidity efficiency, 2) the pressure drop of exhaust air and supply air sides, 3) possible internal leakages; exhaust air transfer ratio (EATR) and outdoor air correction factor (OACF), 4) external leakages and 5) auxiliary energy used for the operation of the HRC. HRC using heat pumps are not covered by this document.
Keywords: Air-to-air heat exchangers|Definitions|Determination|Efficiency|Exhaust gases|Heat accumulators|Heat exchangers|Measurement|Measuring uncertainty|Performance|Rating tests|Specification (approval)|Storage heaters|Testing|Testing conditions|Thermodynamic properties|Waste heat recovery
ICS: 27.060.30 - Calderas e intercambiadores de calor
CTN:

Equivalencia Internacional

Idéntica EN 308:2022

Reemplazo Normas

Reemplaza a DIN EN 308:1997-06

Reemplaza a DIN EN 308:2020-06

El libro en palabras del autor

Ultricies magna feugiat malesuada sociosqu varius vivamus cubilia parturient, himenaeos vitae vehicula nam placerat netus urna platea, nostra rutrum felis mattis penatibus velit quisque.

Button
Preguntas frecuentes ¿Tienes alguna duda sobre nuestros productos?

Respuesta 2

Desde la web

Libros y normas

Más información