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ISO 12759-4-2019 风扇--风扇的效率分类--第4部分:以最高运行速度驱动风扇 Fans — Efficiency classification for fans — Part 4: Driven fans at maximum operating speed
This document establishes a system for the classification of fan efficiency for all fan types driven by <br />motors of nominal rating 0,125 kW and above. It applies to driven fans only, but not to the system <br />(finished original equipment manufacturer’s product, for example box fans and roof fans or ventilation <br />system) in which they might be installed. This document describes a number of different procedures <br />to classify the efficiency of a fan or to apply a minimum efficiency limit (MEL). Those procedures are <br />described in: <br />— ISO 12759-3;<br />— this document (ISO 12759-4);<br />— ISO 12759-5;<br />— ISO 12759-6.<br />There is no method described to compare these classifications and MEL’s....
2024-01-30 07:00:02浏览:6
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JIS R6241-2018 砂轮--粘合磨料砂轮的最高使用轴速 Bonded abrasive products -- Maximum operating speed of grinding wheels
この規格は,研削といしの普通使用周速度の限度,最高使用周速度の決め方及び最高使用周速度別の研 削といしの種類による寸法制限について規定する。...
2024-01-09 00:24:01浏览:6
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ISO 18487-1-2017 航空航天系列--钛管35 MPa操作压力--第1部分:英寸系列 Aerospace series — Titanium tube for 35 MPa operating pressure — Part 1: Inch series
This document is applicable to seamless tubing of circular cross-section made from titanium alloy and intended for use primarily in systems with system operating pressure of 35 MPa (5080 psi) (Pressure Class J), but usage is not limited to such applications....
2024-01-04 19:36:02浏览:7
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NIDS OPNAV 4020.15P-2018 (N41) Operating Stock And War Reserve Requirements And Stock For Petroleum Products
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2023-12-17 22:36:02浏览:5
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SY/T 7335-2016 连续抽油杆作业设备 Continuous sucker rod operating equipment
本标准规定了连续抽油杆作业设备的型式、型号与基本参数,要求,试验方法,检验规则,标志、包装、运输和贮存等。<br />本标准适用于连续抽油杆作业设备的设计、制造和检验。...
2023-10-20 03:48:01浏览:7
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GB/T 11595-1999 用专用电路连接到公用数据网上的分组式数据终端设备(DTE)与数据电路终接设备(DCE)之间的接口 Interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated cir
本标准定义了用专用电路连接到公用数据网上的分组式数据终端设备(DTE)与数据电路终接设备(DCE)之间的接口。<br />本标准规定了用专用电路连接到公用数据网上的分组式数据终端设备(DTE)与数据电路终接设备(DCE)之间的接口的特性和操作。<br />本标准适用于用专用电路连接到公用数据网上的分组式数据终端设备(DTE)和数据电路终接设备(DCE)。...
2023-09-23 08:36:02浏览:10
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GY/T 303.2-2016 智能电视操作系统 第2部分:安全 Smart TV operating system Part 2: Security
GY/T 303的本部分规定了智能电视操作系统的安全体系、安全机制等相关技术要求。<br />本部分适用于智能电视操作系统的研发、生产和应用。...
2023-07-16 23:12:01浏览:12
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