CSA C873 Series-14

C873 SERIES-14 - Building energy estimation methodology

Preface

This is the first edition of the CSA C873 Series of Standards, Building energy estimation methodology. It consists of the following Standards:

(a) the first edition of CSA C873.0, Definitions and general requirements for the calculation of energy loads, energy consumption, and source energy for heating, cooling, ventilation, domestic hot water, and lighting in buildings;

(b) the first edition of CSA C873.1, General balancing procedures, terms and definitions, zoning, and evaluation of energy types;

(c) the first edition of CSA C873.2, Energy loads for heating and cooling of building zones;

(d) the first edition of CSA C873.3, Energy loads for conditioning air;

(e) the first edition of CSA C873.4, Energy consumption for lighting;

(f) the first edition of CSA C873.5, Energy consumption for heating systems;

(g) the first edition of CSA C873.7, Energy consumption for air-handling and air-conditioning systems;

(h) the first edition of CSA C873.8, Energy consumption for domestic hot-water systems;

(i) the first edition of CSA C873.9, Energy consumption and source energy for combined heat and power plants; and

(j) the first edition of CSA C873.10, Boundary conditions of use - Climatic data.

CSA C873.0 provides requirements that are common to some or all of the Standards of the CSA C873 Series. Wherever possible, individual Standards make reference to the relevant clauses in CSA C873.0.

These Standards provide a methodology for assessing the overall energy efficiency of buildings. The calculations enable all energy quantities required for the purpose of heating, domestic hot-water heating, ventilation, air conditioning, and lighting of buildings to be assessed.

CSA gratefully acknowledges that the development of the CSA C873 Series of Standards was made possible, in part, by the financial support of BC Hydro, Manitoba Hydro, the Ontario Power Authority (OPA), Efficiency Nova Scotia, Quebec Hydro, the Ontario Ministry of Energy, the Canadian Electricity Association (CEA) and Sask Power.

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C873.0-14 - Building energy estimation methodology - Part 0 - Definitions and general requirements for the calculation of energy loads, energy consumption, and source energy for heating, cooling, ventilation, domestic hot water, and lighting in buildings

Scope

1.1
This Standard specifies general requirements such as reference publications, definitions, abbreviations, symbols, and subscripts used in the other Standards in the CSA C873 Series.

1.2
This Standard is intended to be used in conjunction with the other Standards in the CSA C873 Series to form a complete Standard.

1.3
In CSA Standards, "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; "may" is used to express an option or that which is permissible within the limits of the standard; 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.

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C873.1-14 - Building energy estimation methodology - Part 1 - General balancing procedures, terms and definitions, zoning, and evaluation of energy types

Scope

1.1
This Standard covers the procedures for calculating the energy loads, energy consumption, and source energy for heating, cooling, lighting, and the domestic hot-water supply of buildings.

1.2
This Standard describes the overall calculation procedure.

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C873.2-14 - Building energy estimation methodology - Part 2 - Energy loads for heating and cooling of building zones

Scope

1.1
This document specifies methods of calculating the energy loads for heating and cooling of the section of the building being assessed. The calculations are based on a specific zone of the building defined according to its intended use.

1.2
This Standard describes procedures that are suitable for calculating the energy loads for heating of building zones which have only heating, as well as the energy loads for heating and cooling of building zones which are served by both heating and cooling systems.

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C873.3-14 - Building energy estimation methodology - Part 3 - Energy loads for conditioning air

Scope

This Standard describes a method that can be used to determine the energy loads for thermal air conditioning (useful energy), as well as the energy consumption for air transport in ventilation and air-conditioning systems (HVAC systems) that partly use external air.

This Standard does not describe a method to determine the energy loads of ventilation systems and air-heating systems for residential buildings.

The energy characteristic tables in Annex A of this Standard, used to calculate the energy loads for conditioning air, were developed for six locations representing NECB Climate Zones 4, 5, 6, 7A, 7B, and 8 and do not apply to other zones.

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C873.4-14 - Building energy estimation methodology - Part 4 - Energy consumption for lighting

Scope

1.1
This Standard specifies a method of verifying the monthly and annual energy consumption for lighting in non-residential buildings.

1.2
This Standard provides a methodology for calculating the electrical energy consumption of the electrical lighting system, as well as accounting for daylighting.

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C873.5-14 - Building energy estimation methodology - Part 5 - Energy consumption for heating systems

Scope

1.1
This Standard determines the energy consumption of the heating systems and their subsystems (control and emission, distribution, storage, and generation).

1.2
This Standard provides a methodology for calculating the energy consumption for heating provided to the air-handling system, zone coils, and absorption chillers. The auxiliary energy and the uncontrolled internal heat gains from the heating system are also calculated.

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C873.7-14 - Building energy estimation methodology - Part 7 - Energy consumption for air-handling and air-conditioning systems

Scope

1.1
This Standard provides a method of calculating energy consumption for heating, ventilation, and air-conditioning systems.

1.2
This Standard specifies requirements for materials, quality of work, dimensions, sustained pressure, environmental