Energy

Categories: Energy
Origin: CSA
Close date: Dec 15, 2020
View moreView less
 

1 Scope

1.1 General

1.1.1

These procedures apply to unitary air conditioners and heat pumps that are

a) factory-made;
b) air-source and air-sink;
c) single-split systems with matching assemblies or single package for use in ducted and/or non-ducted distribution systems;

d) intended for space-heating and/or air-conditioning applications in buildings;
e) electrically driven, mechanical, vapour-compression-type systems; and
f) rated below 65,000 Btu/h (19.0 kW) heating or cooling at standard rating conditions, in accordance with Clause 5.2.

Note: This includes space-constrained single-package or split-system and small-ducthigh-velocity central air conditioners and heat pumps matching assemblies of the type classified in Clause 1.2 and intended for air-conditioning and space-heating applications in buildings.

1.1.2

These procedures do not apply to the following:

a) water to air and/or water units; and
b) heat recovery.

1.2 Unitary equipment

Unitary equipment within the scope of these procedures is outlined in Table 1.

1.3 Terminology

In these procedures, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with these procedures; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of these procedures; and “can” is used to express possibility or capability.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.4 Units of measurement

The values given in IP (inch-pound) units are normative. Metric values given in parentheses are for information only.

Categories: Energy
Origin: CSA
Close date: Dec 16, 2020
View moreView less
 

This Standard establishes minimum requirements for pressure relief devices intended for use on fuel containers that comply with CSA HGV 2, CSA B51, Part 2 or SAE J2579.

Pressure relief devices designed to comply with this Standard are intended to be used with hydrogen fuel complying with SAE J2719, or ISO 14687.

Pressure relief devices may be of any design or manufacturing method that meets the requirements of this Standard.

The construction of pressure relief devices, whether specifically covered in this Standard or not, shall be in accordance with reasonable concepts of safety, performance and durability.

This Standard does not apply to reseating, resealing or pressure activated devices.

Categories: Energy
Origin: CSA
Close date: Dec 17, 2020
View moreView less
 

1 Scope

1.1

This Standard applies to gas convenience outlets, hereinafter referred to as gas outlets and optional enclosures, not to exceed 1-1/2 in (38.1 mm) and pressures not to exceed 5 psi (34.5 kPa), capable of operation at temperatures between 32 °F and 200 °F (0 °C and 93.3 °C) if intended for indoor use only, or between –20 °F and 200 °F (–28.8 °C and 93.3 °C) if intended for indoor/outdoor use. Indoor/outdoor use is also to be capable of operation at –40 °F (–40 °C) when so specified by the manufacturer.

1.2

This Standard sets forth the minimum capabilities, characteristics, and properties that a gas outlet and optional enclosure must possess, at the time of manufacture, in order to be considered suitable for use in a gas piping system. Details of design and manufacture not stated in these requirements, including such design and production tests that will produce gas outlets that meet these requirements, remain the responsibility of the manufacturer.

1.3

All references to pressure throughout this Standard are to be considered gauge pressure, unless otherwise specified.

1.4

This Standard contains SI (Metric) units corresponding to the yard/pound quantities, the purpose being to allow the standard to be used in SI (Metric) units. (IEEE/ASTM SI 10 or ISO 80000-1 is used as a guide in making metric conversion from yard/pound quantities.) If a value for a measurement and a corresponding value in other units are stated, the first stated value is to be regarded as the requirement. The given corresponding value may be approximate. If a value for a measurement and a corresponding value in other units are both specified as a quoted marking requirement, the first stated unit, or both, are to be provided.

1.5

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

 

Categories: Energy
Origin: CSA
Close date: Jan 20, 2021
View moreView less
 

Scope

This Standard provides a method for measuring fireplace, steady state and radiant efficiency.

This Standard applies to vented gas fireplaces meeting the requirements of ANSI Z21.50/CSA 2.22 and to vented gas fireplace heaters approved to ANSI Z21.88/CSA 2.33 that use natural gas or propane.

This Standard does not apply to decorative fireplaces meeting the requirements of ANSI Z21.60/CSA 2.26.

This Standard includes

- a test method for cyclic and part-load performance;

- methods for interpolating and extrapolating test data; and

- calculation procedures for establishing steady state and seasonal performance.

- calculation procedures for establishing radiant efficiency

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

The values given in SI (metric) are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.

Categories: Energy
Origin: CSA
Close date: Jan 24, 2021
View moreView less
 

1.1 Application

This Standard provides guidelines for the thermal simulation and calculation of thermal bridges in new and existing buildings. This Standard addresses the special requirements of simulating heat flow through building enclosure details and is intended to be suitable for building energy code compliance.

Thermal simulation does not guarantee the in-situ heat flow or temperature performance of a building enclosure detail. Actual performance may differ from the simulated outputs due to variations in construction, weather, and other factors.

Note: Annex D provides normative language for authorities having jurisdiction (AHJs) or other specifying authorities considering referencing this Standard.

1.2 Items covered

This document sets out the specifications for two- and three-dimensional geometrical models of thermal bridges for the numerical calculation of heat flows to assess the thermal performance of a building enclosure or part of it, and to determine surface temperatures to allow for assessment of other performance factors, including condensation risk and occupant comfort.
The procedure outlined in this Standard makes the following simplifying assumptions:

a) Heat transfer is conductive and steady state
b) All physical properties are independent of temperature, including thermal conductivities and dimensions.

Note: Except for optional project-specific temperature correction of thermal conductivity (Clause 8.4)

c) Heat sources within the building element are not included in the analysis.
d) Heat transfer due to air leakage or ventilation is not included in the analysis.
e) Insulation layers are installed tight to adjacent construction to avoid air looping around the insulation.

1.3 Items not covered

Items that are not covered by this Standard include

a) one-dimensional hand-calculation approaches described in the 2017 ASHRAE Handbook — Fundamentals;
b) simulation of fenestration products for the purpose of determining U-values or temperatures, which are covered by NFRC 100 and AAMA 515-19, respectively;
c) moisture transport through building enclosure assemblies or details;
d) solar radiation or shading;
e) phase-changing materials;
f) thermal mass storage effects or transient thermal analysis;
g) air leakage effects; and
h) computational fluid dynamics (CFD).

Note: Impact from rain other weather events are not included in the simulation procedure.  See Annex E for a simplified procedure for accounting for rainfall on an inverted roof

1.4 Terminology

In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.5 Units of measurement

The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.

Note: The values given in brackets [ ] are in IP (inch-pound) units and are often inexact rounded values. Users of this Standard/Specification shall simulate only to the SI values or to exact conversions of the SI values.

Common conversion factors used in thermal bridging analysis are included in Tables 3.3 and 3.4.

1.6 Simulator qualifications

Performing simulations in accordance with this Standard requires for the simulator to be proficient with the specific software tool being used to carry out the simulations. Additionally, the simulator requires a working knowledge of building physics, building industry codes and standards, and construction practices.

Note: Annex D provides a more complete list of the modeller/supervisor qualifications that may be considered by AHJs or other specifying authorities considering referencing this Standard.