BEAM Plus Existing Buildings

BEAM P

LUS FOR

XISTING

UILDINGS

PPENDICES

ERSION

1.2

8.1 A

NNUAL

NERGY

A - 4

assumed same for existing building and assessed building. For the

purpose of quantifying energy reduction as a result of efficient design

towards demonstration of compliance to this credit, the acceptable

reduction measures can be:

(a) An improvement over the corresponding minimum allowable levels

of performance in any one or more of the items listed with energy

efficiency requirements in Section 5 to 8 of BEC (such as lighting

A/C, vertical transport and electrical)

(b) Having recovered energy or renewable energy captured or

generated on site

natural ventilation, free-cooling, natural daylight etc. When the

selected simulation program cannot adequately model a design or a

control strategy, exceptional calculation method can be used with

reference to 8.1.4 - ASHRAE Approach (see below)

(d) Addition of energy reduction components, such as (but not limited to)

variable speed drives, heat recovery, energy efficient lamps and

ballasts, smart control over lift banks etc), light pipes and light tubes,

sensors (daylight, CO

occupancy), dimming devices. (see below)

(e) Reduction in equipment/process loads, where sufficient evidence is

given to support the savings over common practices

(f) Reduction in energy use through the selection of a more efficient

baseline cooling system. (See below)

Baseline Building Design (Reference Building)

A3.3.1 in the BEC states that “the simulation model of the reference

building should be developed by modifying the model of the designed

building as described in clause A3.2 (simulation of the designed

building). Except as specifically instructed in the Appendix of the BEC, all

building systems and equipment should be modeled identically for both

the reference building and designed building.”

For the purpose of assessment of this credit, the baseline building should

also be developed based on designed building but with the following

important distinctions:

(a) Modifications as described by clauses A3.3.2, A3.3.4, A3.3.6, and

A3.3.7

(b) Energy saving devices and load reduction strategies need not be

included in the baseline building. These are defined as components

or operation strategies that reduce energy use while delivering the

same level of environmental comfort to the building. Classification of

energy saving devices and load reduction strategies is subject to the

acceptance of the BEAM assessor.

Baseline Air-Conditioning System

In A3.3.5 of BEC, concerning air-conditioning system:

“The air-conditioning systems, zoning and equipment types of the

reference building should be identical to the designed building; and the

system and equipment of the reference building should exactly meet the

relevant requirements in Section 6 of the BEC.”

For the purpose of assessment of this credit, the baseline air-

conditioning should have identical zoning to the designed building, but

should be modeled with a system and equipment as described in the

following table: