Ashrae

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ASHRAE is an acronym for American Society for Heating Refrigeration and Air conditioning. ASHRAE is an international voluntary organization for people involved in heating, ventilation, air conditioning, and refrigeration (HVAC&R). The society promotes the general sciences of HVAC&R. The main Society headquarters is located in Atlanta, Georgia with local chapters located across the United States and throughout the world. In recent years ASHRAE has extended its role beyond HVAC & R. For example ASHRAE standard 90.1 stipulates minimum energy efficiency requirements for Building envelope, lighting, motors etc.. ASHRAE publishes four volumes of handbook as below. These handbooks are standard references used in the industry  Fundamentals 

HVAC Systems and equipment



HVAC Applications



Refrigeration

ASHRAE referred all over made in

also publishes a number of standards and guidelines which is in building codes, Green Building rating systems and specifications the world. In this article we will specifically discuss the references LEED V4 rating system.

2. LEED V4 Credits associated with ASHRAE Standards

Standard

Name

What it Covers?

ASHRAE 90.1 – 2010

Energy Standards for Buildings except low rise residential buildings

Minimum energy efficiency requirements for HVAC, lighting, the building envelope, and other equipment.

LEED v4 Credits   

ASHRAE 62.1-2010

Ventilation for Acceptable Indoor Air Quality

Natural and Mechanical ventilation requirements, minimum ventilation rates etc.

  

ASHRAE 52.2-2007

Method of Testing General Ventilation AirCleaning Devices for Removal Efficiency by

Test procedure for evaluating the performance of aircleaning devices as a

 

EA – Minimum and Optimum Energy Performance MR- Building Life cycle impact reduction EQ – Interior Lighting EA – Minimum and Optimum Energy Performance EQ – Minimum Indoor Air Quality Performance EQ – Enhanced Indoor Air Quality Strategies EQ- Construction Indoor Air Quality Management Plan EQ – Enhanced

ASHRAE 55-2010

Particle Size

function of particle size.

Thermal Environmental Conditions for Human Occupancy

Specify the combinations of indoor thermal environmental factors and personal factors that will produce thermal environmental conditions acceptable to a majority of the occupants within the space.

Indoor Air Quality Strategies 

EQ – Thermal Comfort

3. ASHRAE 189.1 and LEED Rating systems

LEED have been developed for implementation as a voluntary system and not to be implemented as mandatory requirements within a jurisdiction. LEED Rating system has number of prerequisites with many optional credits to allow focus on the green building aspects most important to the user of the system. Standard 189.1 is primarily based on the mandatory requirements that establish baseline criteria for a high-performance green building found in voluntary rating systems. Standard 189.1 is a code-intended standard, written in regulatory language. An updated version of ASHRAE 189.1 (full name: ANSI/ASHRAE/IES/USGBC Standard 189.1, Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings) will provide baseline metrics and other technical requirements that align with LEED prerequisites and the IgCC. The standard will likely draw some technical requirements from LEED, but it will maintain its own consensus process under ANSI. The IgCC (for which 189.1 is already an alternative compliance path) will cease being developed as an independent system and will instead become an adoptable, codeenforceable version of 189.1.

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