Energi- og varmeoverføringsteknikk

Emner: Gassbrennere
Komité: CEN/TC 181 (Dedicated liquefied petroleum gas appliances)
Opprinnelse: SN
Sluttdato: 2. jun 2022
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This document specifies the construction and performance characteristics related to safety and the rational use of energy of portable appliances burning liquefied petroleum gases at the vapour pressure within the gas cartridge or gas cylinder, excepting those where the gas cartridge is inserted horizontally in the chassis. NOTE These appliances are referred to in the body of the text as "appliances". This document applies to various types of portable appliances burning liquefied petroleum gases at vapour pressure and designed to be used with cartridges as complying with EN 417 or gas cylinders. This document covers appliances for outdoor or in well ventilated areas uses only. For example the following types of appliances are covered: a) cooking appliances (stoves, grills, barbecues...); This document does not cover barbecues that can be used indoors; b) lighting appliances; c) heating appliances; This document only applies to appliances with a maximum heat input of up to 3 kW (Hs) for outdoor use only; d) blowtorches; This document only applies to blowtorches without a flexible hose; e) laboratory burners. The requirements apply to these appliances or their functional sections whether or not the latter are independent or incorporated into an assembly. Appliances covered by this document are not connected to a flue for the discharge of products of combustion and are not connected to the mains electricity supply. This document covers neither appliances supplied with LPG in the liquid phase nor appliance with fixed integral container which may or may not be refilled by the user It does not apply to lighters as defined in EN ISO 9994. It does not apply to gas appliances operating with a valve cartridge which is horizontally integrated into the chassis of the appliance also called "flat portable gas stove". Requirements for rational use of energy have been included for stove burners. However, such requirements have not been included for the other types of appliances because: - for grills and barbecues, this is a type of cooking which is achieved by various means such as radiant elements; in addition this type of cooking varies according to the type of food and region where the appliance is used; - for lighting appliances, the consumption is insignificant because these appliances have a very low rate and are used only for a few hours in a year; - for heating appliances, all the heat produced is discharged into the environment; - for tools such as blowtorches which are not professional tools in regular use, the gas consumption depends very much on the way it is used.
Komité: CEN/TC 299 (Gas-fired sorption appliances, indirect fired sorption appliances, gas-fired endothermic engine heat pumps and domestic gas-fired washing and drying appliances.)
Opprinnelse: SN
Sluttdato: 9. jun 2022
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This part of EN 12309 specifies the requirements, test methods and conditions for gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW. This part of EN 12309 deals particularly with test protocols and tools to calculate the capacity, the gas utilization efficiency and the electrical power input of the appliance. This data can be used in particular to calculate the seasonal efficiency of the appliance.
Komité: ISO/TC 238 (Solid biofuels)
Opprinnelse: ISO
Sluttdato: 30. jun 2022
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This document determines the fuel quality classes and specifications of graded densified solid biofuels produced from thermally treated biomass for commercial and industrial use. Thermal treatment includes processes such as torrefaction, steam explosion, hydrothermal carbonization and charring, all of which represent different exposure to heat, oxygen, steam or water. This document covers pellets and briquettes produced from the following raw materials (see ISO 17225-1, Table 1):
— 1. Woody biomass;
— 2. Herbaceous biomass;
— 3. Fruit biomass;
— 4. Aquatic biomass;
— 5. Blends and mixtures.
Subcategories of the above stated raw materials are also included.
This document does not consider products, which are marketed as charcoal or as charcoal products. For these products, ISO 17225-1, Table 14 shall apply.
Emner: Gassbrennere
Komité: ISO/TC 161 (Controls and protective devices for gas and/or oil)
Opprinnelse: ISO
Sluttdato: 6. jul 2022
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ISO 23551-8:2016 specifies the safety, construction and performance requirements for multifunctional controls intended for use with gas burners, gas appliances and similar use, hereafter referred to as "MFC".


ISO 23551-8:2016 is applicable to MFC with declared maximum inlet pressures up to, and including, 50 kPa (500 mbar) of nominal connection sizes up to, and including, DN 150 for use with one or more fuel gases.


MFC consist of two or more functions, at least one of which is a mechanical control, as specified in the relevant control standards.