prEN ISO 7730
(Main)Ergonomics of the thermal environment - Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria (ISO/DIS 7730:2023)
Ergonomics of the thermal environment - Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria (ISO/DIS 7730:2023)
ISO 7730:2005 presents methods for predicting the general thermal sensation and degree of discomfort (thermal dissatisfaction) of people exposed to moderate thermal environments. It enables the analytical determination and interpretation of thermal comfort using calculation of PMV (predicted mean vote) and PPD (predicted percentage of dissatisfied) and local thermal comfort, giving the environmental conditions considered acceptable for general thermal comfort as well as those representing local discomfort.
Ergonomie der thermischen Umgebung - Analytische Bestimmung und Interpretation der thermischen Behaglichkeit durch Berechnung des PMV- und des PPD-Indexes und Kriterien der lokalen thermischen Behaglichkeit (ISO/DIS 7730:2023)
Diese Internationale Norm legt ein standardisiertes Verfahren fest, mit dem sich die allgemeine thermische Behaglichkeit von Personen in einem Raum sowie der Grad der Unbehaglichkeit (thermischen Unzufrieden
heit) von Personen, die einem gemäßigten Umgebungsklima ausgesetzt sind, bewerten lassen. Sie trifft
gungen zur analytischen Bestimmung und Interpretation der thermischen Behaglichkeit mithilfe der
nung von PMV (en: predicted mean vote) und PPD (en: predicted percentage of dissatisfied) und anhand von Kriterien für die lokale thermische Behaglichkeit, wobei die Umgebungsbedingungen angegeben werden, die für die allgemeine thermische Behaglichkeit als annehmbar gelten, und die Umgebungsbedingungen, bei denen lokale Unbehaglichkeit auftritt. Die Internationale Norm gilt für gesunde Männer und Frauen, die einem
raumklima ausgesetzt sind, das thermische Behaglichkeit hervorrufen soll, wo es jedoch bei der Gestaltung neuer bzw. der Bewertung existierender Umgebungen zu moderaten Abweichungen vom Zustand der
schen Behaglichkeit kommt. Obwohl diese Norm speziell für die Arbeitsumgebung erstellt wurde, kann sie auch für andere Arten der Umgebung angewendet werden. Für Personen mit besonderen Anforderungen, zum
spiel mit physischen Einschränkungen, sollte ISO28803 angewendet werden. Ethnische, nationale oder
grafische Unterschiede sind ebenfalls zu berücksichtigen, insbesondere wenn es um nicht klimatisierte Räume geht. Leitlinien sind in Abschnitt8 und Abschnitt10 des Leitfadens ISODTRXXXXX angegeben.
Ergonomie des ambiances thermiques - Détermination analytique et interprétation du confort thermique par le calcul des indices PMV et PPD et par des critères de confort thermique local (ISO/DIS 7730:2023)
L'ISO 7730:2005 présente des méthodes de prévision de la sensation thermique générale et du degré d'inconfort (insatisfaction thermique) général des personnes exposées à des ambiances thermiques modérées. Elle permet de déterminer analytiquement et d'interpréter le confort thermique, par le calcul des indices PMV (vote moyen prévisible) et PPD (pourcentage prévisible d'insatisfaits) et par des critères de confort thermique local, donnant les conditions des ambiances thermiques considérées acceptables du point de vue du confort thermique général et les conditions représentant les inconforts locaux.
Ergonomija toplotnega okolja - Analitično ugotavljanje in razlaga toplotnega ugodja z izračunom PMV in PPD vrednosti ter merili za lokalno toplotno ugodje (ISO/DIS 7730:2023)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2023
Nadomešča:
SIST EN ISO 7730:2006
Ergonomija toplotnega okolja - Analitično ugotavljanje in interpretacija toplotnega
ugodja z izračunom PMV in PPD vrednosti ter merili za lokalno toplotno ugodje
(ISO/DIS 7730:2023)
Ergonomics of the thermal environment - Analytical determination and interpretation of
thermal comfort using calculation of the PMV and PPD indices and local thermal comfort
criteria (ISO/DIS 7730:2023)
Ergonomie der thermischen Umgebung - Analytische Bestimmung und Interpretation der
thermischen Behaglichkeit durch Berechnung des PMV- und des PPD-Indexes und
Kriterien der lokalen thermischen Behaglichkeit (ISO/DIS 7730:2023)
Ergonomie des ambiances thermiques - Détermination analytique et interprétation du
confort thermique par le calcul des indices PMV et PPD et par des critères de confort
thermique local (ISO/DIS 7730:2023)
Ta slovenski standard je istoveten z: prEN ISO 7730
ICS:
13.180 Ergonomija Ergonomics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT INTERNATIONAL STANDARD
ISO/DIS 7730
ISO/TC 159/SC 5 Secretariat: BSI
Voting begins on: Voting terminates on:
2023-03-22 2023-06-14
Ergonomics of the thermal environment — Analytical
determination and interpretation of thermal comfort using
calculation of the PMV and PPD indices and local thermal
comfort criteria
Ergonomie des ambiances thermiques — Détermination analytique et interprétation du confort thermique
par le calcul des indices PMV et PPD et par des critères de confort thermique local
ICS: 13.180
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
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ISO/DIS 7730:2023(E)
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ISO/DIS 7730:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 7730
ISO/TC 159/SC 5 Secretariat: BSI
Voting begins on: Voting terminates on:
Ergonomics of the thermal environment — Analytical
determination and interpretation of thermal comfort using
calculation of the PMV and PPD indices and local thermal
comfort criteria
Ergonomie des ambiances thermiques — Détermination analytique et interprétation du confort thermique
par le calcul des indices PMV et PPD et par des critères de confort thermique local
ICS: 13.180
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
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ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
ISO/DIS 7730:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Whole body thermal comfort Predicted mean vote (PMV) . 2
4.1 Determination . 2
4.2 Applications. 4
5 Predicted percentage dissatisfied (PPD) . 4
6 Local thermal comfort . 5
6.1 General . 5
6.2 Draught . 6
6.3 Vertical air temperature difference . 6
6.4 Warm and cool floors . 7
6.5 Radiant temperature asymmetry . 8
7 Thermal environments for comfort . 9
8 Non-steady-state thermal environments .10
8.1 General . 10
8.2 Temperature cycles . 10
8.3 Temperature drifts or ramps . . 10
8.4 Transients . 10
Annex A (informative) Examples of thermal comfort requirements for different
categoriesof environment and types of space .11
Annex B (informative) Metabolic rates of different activities .16
Annex C (informative) Estimation of thermal insulation of clothing ensembles .17
Annex D (normative) Computer program for calculating PMV and PPD .21
Annex E (informative) Graphics for determination of predicted mean vote (PMV) .25
Annex F (informative) Humidity .28
Annex G (informative) Air velocity .29
Bibliography .31
iii
ISO/DIS 7730:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 7730 was prepared by Technical Committee ISO/TC 159, Ergonomics, Subcommittee SC 5,
Ergonomics of the physical environment.
This fourth edition cancels and replaces the third edition (ISO 7730:2005), which has been technically
revised. Parts of the standard (long term evaluations, adaptation and diversity) has been moved to the
technical guideline DTRxxxxx. The mistakes in the calculation program has been corrected. The tables
for predicting PMV has been deleted, as most people today will use a calculation program.
iv
ISO/DIS 7730:2023(E)
Introduction
This International Standard covering the evaluation of moderate thermal environments is one of a
series of ISO documents specifying methods for the measurement and evaluation of the moderate and
extreme thermal environments to which human beings are exposed (ISO 7243, ISO 7933 and ISO 11079,
all three dealing with extreme environmental conditions, are others in the series).
A human being's thermal sensation is mainly related to the thermal balance of his or her body as a
whole. This balance is influenced by physical activity and clothing, as well as the environmental
parameters: air temperature, mean radiant temperature, air velocity and air humidity. When these
factors have been estimated or measured, the index for thermal comfort, PMV (Predicted Mean Vote)
can be calculated. See Clause 4.
The predicted percentage dissatisfied (PPD) index provides information on thermal discomfort or
thermal dissatisfaction expressed as the percentage of people likely to feel too warm or too cool in a
given environment. The PPD can be obtained from the PMV. See Clause 5.
Thermal discomfort can also be caused by unwanted local cooling or heating of the body. The most
common local discomfort factors are radiant temperature asymmetry (cold or warm surfaces), draught
(defined as a local cooling of the body caused by air movement), vertical air temperature difference,
and cold or warm floors. Clause 6 specifies how to predict the percentage dissatisfied owing to local
discomfort parameters.
Dissatisfaction can be caused by hot or cold discomfort for the body as a whole. Comfort limits can in
this case be expressed by the PMV and PPD indices. But thermal dissatisfaction can also be caused by
local thermal discomfort parameters. Clause 7 deals with acceptable thermal environments for comfort.
Clauses 6 and 7 are based mainly on steady-state conditions. Means of evaluating non-steady-state
conditions such as transients (temperature steps), cycling temperatures or temperature ramps are
presented in Clause 8. The thermal environments in buildings or at workplaces will change over time
and it might not always be possible to keep conditions within recommended limits.
This standard is supposed to be used together with the technical guideline DTRxxxxx: Guidance for
design, control and evaluation of moderate indoor thermal environment
v
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