This document specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and\/or opaque panels fitted in, or connected to, frames.<\/p>\n
The calculation includes:<\/p>\n
different types of glazing, e.g. glass or plastic; single or multiple glazing; with or without low emissivity coating; with cavities filled with air or other gases;<\/p>\n<\/li>\n
frames (of any material) with or without thermal breaks;<\/p>\n<\/li>\n
different types of opaque panels clad with metal, glass, ceramics or any other material.<\/p>\n<\/li>\n<\/ul>\n
Thermal bridge effects at the rebate or connection between the glazed area, the frame area and the panel area are included in the calculation.<\/p>\n
The calculation does not include:<\/p>\n
effects of solar radiation;<\/p>\n<\/li>\n
heat transfer caused by air leakage;<\/p>\n<\/li>\n
calculation of condensation;<\/p>\n<\/li>\n
effect of shutters;<\/p>\n<\/li>\n
additional heat transfer at the corners and edges of the curtain walling;<\/p>\n<\/li>\n
connections to the main building structure nor through fixing lugs;<\/p>\n<\/li>\n
curtain wall systems with integrated heating.<\/p>\n<\/li>\n<\/ul>\n
\nNOTE Table 1 in the Introduction shows the relative position of this document within the set of EPB standards in the context of the modular structure as set out in ISO 52000-1.<\/p>\n<\/blockquote>\n
PDF Catalog<\/h4>\n
\n
\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n National foreword <\/td>\n<\/tr>\n \n 9<\/td>\n Foreword <\/td>\n<\/tr>\n \n 10<\/td>\n Introduction <\/td>\n<\/tr>\n \n 15<\/td>\n 1 Scope
2 Normative references <\/td>\n<\/tr>\n\n 16<\/td>\n 3 Terms and definitions <\/td>\n<\/tr>\n \n 17<\/td>\n 4 Symbols and subscripts
4.1 Symbols
4.2 Subscripts
4.3 Superscripts
5 Description of the methods
5.1 Output of the method <\/td>\n<\/tr>\n\n 18<\/td>\n 5.2 General description
5.3 Geometrical characteristics
5.3.1 Main principles <\/td>\n<\/tr>\n\n 20<\/td>\n 5.3.2 Internal depth <\/td>\n<\/tr>\n \n 21<\/td>\n 5.3.3 Boundaries of curtain wall structures <\/td>\n<\/tr>\n \n 24<\/td>\n 5.3.4 Cut-off planes and partitioning of thermal zones
6 Methodologies for the calculation of curtain wall transmittance <\/td>\n<\/tr>\n\n 26<\/td>\n 7 Single assessment method
7.1 Output data
7.2 Calculation time intervals
7.3 Input data
7.3.1 Geometrical characteristics <\/td>\n<\/tr>\n\n 30<\/td>\n 7.3.2 Thermal characteristics <\/td>\n<\/tr>\n \n 32<\/td>\n 7.4 Calculation procedure
7.4.1 Applicable time interval
7.4.2 Calculation of thermal transmittance <\/td>\n<\/tr>\n\n 33<\/td>\n 8 Component assessment method
8.1 Output data
8.2 Calculation time intervals
8.3 Input data
8.3.1 Geometrical characteristics <\/td>\n<\/tr>\n\n 37<\/td>\n 8.3.2 Thermal characteristics <\/td>\n<\/tr>\n \n 40<\/td>\n 8.4 Calculation procedure
8.4.1 Applicable time interval
8.4.2 Calculation of thermal transmittance <\/td>\n<\/tr>\n\n 41<\/td>\n 9 Report
9.1 Contents of report <\/td>\n<\/tr>\n\n 42<\/td>\n 9.2 Drawings
9.2.1 Section drawings
9.2.2 Overview drawing of the whole curtain wall element
9.3 Values used in the calculation
9.4 Presentation of results <\/td>\n<\/tr>\n\n 43<\/td>\n Annex\u00a0A (normative) Input and method selection data sheet\u00a0\u2014 Template <\/td>\n<\/tr>\n \n 45<\/td>\n Annex\u00a0B (informative) Input and method selection data sheet \u2014 default choices <\/td>\n<\/tr>\n \n 47<\/td>\n Annex\u00a0C (normative) Regional references in line with ISO Global Relevance Policy <\/td>\n<\/tr>\n \n 48<\/td>\n Annex\u00a0D (normative) Linear thermal transmittance of junctions <\/td>\n<\/tr>\n \n 55<\/td>\n Annex\u00a0E (normative) A method for calculating the thermal effect of screws using a 2D numerical method and the procedures specified in ISO\u00a010077-2 <\/td>\n<\/tr>\n \n 58<\/td>\n Annex\u00a0F (normative) Ventilated and unventilated air spaces <\/td>\n<\/tr>\n \n 61<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Thermal performance of curtain walling. Calculation of thermal transmittance<\/b><\/p>\n
\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2017<\/td>\n 62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":222612,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1236,2641],"product_tag":[],"class_list":{"0":"post-222609","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-060-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/222609","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\/222612"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=222609"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=222609"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=222609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}