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Uued standardid


EVS-EN ISO 16812:2019
Hind 7,38 EUR
Identne ISO 16812:2019; EN ISO 16812:2019
Petroleum, petrochemical and natural gas industries - Shell-and-tube heat exchangers (ISO 16812:2019)
This document specifies requirements and gives recommendations for the mechanical design, material selection, fabrication, inspection, testing and preparation for shipment of shell-and-tube heat exchangers for the petroleum, petrochemical and natural gas industries. This document supplements API Std 660, 9th edition (2015), the requirements of which are applicable with the exceptions specified in this document. This document is applicable to the following types of shell-and-tube heat exchangers: heaters, condensers, coolers and reboilers. This document is not applicable to vacuum-operated steam surface condensers and feed-water heaters.

ISO 50046:2019
Hind 158,38 EUR
General methods for predicting energy savings
This document specifies general methods for the calculation of predicted energy savings (PrES), using measure-based calculation methods, also known as bottom-up or energy performance improvement actions (EPIAs)-based methods (see ISO 17742). Indicator-based methods (see ISO 17742) and total-consumption-based methods (see ISO 50047) are not included in the scope of this document. This document provides general principles for categorizing and choosing the method, taking account of the context, targeted accuracy and resources available for calculating the PrES. It also provides guidance on the conditions for ensuring the quality of the PrES, their documentation and validation. It is applicable to calculation of PrES for any: — type of EPIA; — end-use sector; — energy end-use; — level of aggregation of energy savings; — stakeholder. NOTE 1 Stakeholders can include private or public organizations, energy auditors, energy services companies, energy and equipment suppliers, policy makers, etc. This document considers PrES from: — an EPIA; and/or — an action plan, programme or policy (aggregated energy savings). NOTE 2 An action plan, programme or policy can be implemented at different scales (organization, city, region, country). This document describes how to calculate PrES over a prediction period. It can be used to calculate PrES in terms of primary energy or final (or delivered) energy (as defined in ISO 50047 and ISO/IEC 13273-1).

CEN/TR 16999:2019
Hind 20,74 EUR
Solar energy systems for roofs - Requirements for structural connections to solar panels
This Technical Report provides guidance on the principles and requirements of structural design for the safety and serviceability of the structural connection between solar energy panels (thermal or photovoltaic) that are mounted on flat or pitched roofs. This Technical Report does not include requirements for: - weather tightness of the roof, solar panels and connections; - electrical, thermal or mechanical characteristics of the solar panels; - precautions against fire of the installation.

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EVS-EN ISO 16812:2007
Identne ISO 16812:2007; EN ISO 16812:2007
Nafta-, naftakeemia- ja maagaasitööstused. Torusoojusvahetid
This International Standard specifies requirements and gives recommendations for the mechanical design, material selection, fabrication, inspection, testing and preparation for shipment of shell-and-tube heat exchangers for the petroleum, petrochemical and natural gas industries. This International Standard is applicable to the following types of shell-and-tube heat exchangers: heaters, condensers, coolers and reboilers. This International Standard is not applicable to vacuum-operated steam surface condensers and feed-water heaters.
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prEN ISO 21404
Identne ISO/DIS 21404; prEN ISO 21404
Tähtaeg 15.05.2019
Solid biofuels - Determination of ash melting behaviour (ISO/DIS 21404:2019)
This document specifies a method tor the determination of the characteristic temperatures for the ash melting behaviour of solid biofuels.
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