{"id":315872,"date":"2024-10-19T21:46:42","date_gmt":"2024-10-19T21:46:42","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-151122018\/"},"modified":"2024-10-25T19:55:43","modified_gmt":"2024-10-25T19:55:43","slug":"bs-en-iso-151122018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-151122018\/","title":{"rendered":"BS EN ISO 15112:2018"},"content":{"rendered":"

This document provides the means for energy determination of natural gas by measurement or by calculation, and describes the related techniques and measures that are necessary to take. The calculation of thermal energy is based on the separate measurement of the quantity, either by mass or by volume, of gas transferred and its measured or calculated calorific value. The general means of calculating uncertainties are also given.<\/p>\n

Only systems currently in use are described.<\/p>\n

\n

NOTE<\/b> Use of such systems in commercial or official trade can require the approval of national authorization agencies, and compliance with legal regulations is required.<\/p>\n<\/blockquote>\n

This document applies to any gas-measuring station from domestic to very large high-pressure transmission.<\/p>\n

New techniques are not excluded, provided their proven performance is equivalent to, or better than, that of those techniques referred to in this document.<\/p>\n

Gas-measuring systems are not the subject of this document.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nEuropean foreword
Endorsement notice <\/td>\n<\/tr>\n
7<\/td>\nForeword <\/td>\n<\/tr>\n
8<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
14<\/td>\n4 Symbols and units <\/td>\n<\/tr>\n
15<\/td>\n5 General Principles <\/td>\n<\/tr>\n
16<\/td>\n6 Gas measurement
6.1 General <\/td>\n<\/tr>\n
17<\/td>\n6.2 Volume measurement
6.3 Calorific value measurement
6.3.1 Measurement techniques and sampling <\/td>\n<\/tr>\n
18<\/td>\n6.3.2 Direct measurement \u2014 Calorimetry
6.3.3 Inferential measurement
6.3.4 Correlation techniques
6.3.5 Pressure and temperature
6.3.6 Gas quality tracking
6.4 Volume conversion
6.4.1 General <\/td>\n<\/tr>\n
19<\/td>\n6.4.2 Density
6.4.3 Compression factor
6.5 Calibration
6.6 Data storage and transmission <\/td>\n<\/tr>\n
20<\/td>\n7 Energy determination
7.1 Interfaces <\/td>\n<\/tr>\n
22<\/td>\n7.2 Methods of energy determination
7.2.1 Direct determination of energy
7.2.2 Indirect determination of energy <\/td>\n<\/tr>\n
24<\/td>\n8 Strategy and procedures
8.1 General <\/td>\n<\/tr>\n
25<\/td>\n8.2 Strategies for energy determination <\/td>\n<\/tr>\n
26<\/td>\n8.2.1 Strategies for single interfaces <\/td>\n<\/tr>\n
30<\/td>\n8.3 Plausibility checks <\/td>\n<\/tr>\n
31<\/td>\n9 Assignment methods
9.1 Fixed assignment
9.1.1 Fixed assignment of a measured calorific value <\/td>\n<\/tr>\n
32<\/td>\n9.1.2 Fixed assignment of a declared calorific value <\/td>\n<\/tr>\n
33<\/td>\n9.2 Variable assignment
9.2.1 Input at two or more different stations with zero floating point <\/td>\n<\/tr>\n
34<\/td>\n9.2.2 Input at two or more different stations with comingled gas flows <\/td>\n<\/tr>\n
35<\/td>\n9.3 Determination of the representative calorific value
9.3.1 Arithmetically averaged calorific value
9.3.2 Quantity-weighted average calorific value
9.3.3 Gas quality tracking <\/td>\n<\/tr>\n
38<\/td>\n10 Calculation of energy quantities
10.1 General formulae for energy <\/td>\n<\/tr>\n
39<\/td>\n10.2 Calculation of averaged values \u2014 Calculation from average calorific values and cumulative volumes
10.2.1 Arithmetic average of the calorific value <\/td>\n<\/tr>\n
40<\/td>\n10.2.2 Quantity-weighted average of the calorific value
10.3 Volume and volume-to-mass conversions
10.4 Energy determination on the basis of declared calorific values
11 Accuracy on calculated energy
11.1 Accuracy <\/td>\n<\/tr>\n
41<\/td>\n11.2 Calculation of uncertainty <\/td>\n<\/tr>\n
42<\/td>\n11.3 Bias <\/td>\n<\/tr>\n
43<\/td>\n12 Quality control and quality assurance
12.1 General
12.2 Check of the course of the measuring data <\/td>\n<\/tr>\n
44<\/td>\n12.3 Traceability
12.4 Substitute values <\/td>\n<\/tr>\n
46<\/td>\nAnnex A (informative) Main instruments and energy-determination techniques <\/td>\n<\/tr>\n
50<\/td>\nAnnex B (informative) Different possible patterns in the change of the calorific value <\/td>\n<\/tr>\n
53<\/td>\nAnnex C (informative) Volume conversion and volume-to-mass conversion <\/td>\n<\/tr>\n
54<\/td>\nAnnex D (informative) Incremental energy determination <\/td>\n<\/tr>\n
56<\/td>\nAnnex E (informative) Practical examples for volume conversion and energy quantity calculation <\/td>\n<\/tr>\n
60<\/td>\nAnnex F (informative) Practical examples for averaging the calorific value due to different delivery situations <\/td>\n<\/tr>\n
65<\/td>\nAnnex G (informative) Ways of determining substitute values <\/td>\n<\/tr>\n
67<\/td>\nAnnex H (informative) Plausibility check graphical example <\/td>\n<\/tr>\n
68<\/td>\nAnnex I (informative) Uncorrected data, bias correction and final result graphical example <\/td>\n<\/tr>\n
70<\/td>\nAnnex J (informative) Single-reservoir calorific value determination <\/td>\n<\/tr>\n
72<\/td>\nAnnex K (informative) <\/td>\n<\/tr>\n
78<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Natural gas. Energy determination<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2018<\/td>\n80<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":315878,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-315872","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/315872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/315878"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=315872"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=315872"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=315872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}