Environmentally balanced
The main strategies* adopted to achieve a green building
design include:
-- Sustainable Sites (SS)
-- Water Efficiency (WE)
-- Energy & Atmosphere (EA)
-- Materials & Resources (MR)
-- Indoor Environmental Quality (IEQ)
-- Innovation in Design (ID)
■■ Green building certification
A number of green building certification programs exist
in the market and offer third-party assessment of green
building measures for a wide variety of building types. Some
examples of existing programs include:
-- LEED (Leadership in Energy & Environmental Design)
-- BREEAM
-- ESTIDAMA PEARL
-- NABERS (National Australian Built Environment Rating
System)
■■ HVAC products and systems
Carrier HVAC products are built to high en ergy efficiency
and indoor air quality standards. They assist building
designers and owners by offering high-performance heating,
ventilation, and air conditioning (HVAC) systems and
products with reduced energy consumption and enhanced
indoor air quality for the occupants, contributing to
optimised green building performance.
Remote management
(EMM option)
The Energy Management Module offers extended remote
control possibilities:
-- Room temperature: permits set-point reset based
on the building indoor air temperature (with Carrier
thermostat)
-- Set point reset: ensures reset of the cooling set-point
based on a 4-20 mA or 0-10 V signal
-- Demand limit: permits limitation of the maximum
chiller power or current based on a 0-10 V signal
-- Demand limit 1 and 2: closing of these contacts limits
the maximum chiller power or current to two predefined
values
-- User safety: this contact can be used for any
customer safety loop; opening the contact generates a
specific alarm
-- Ice storage end: when ice storage has finished, this
input permits return to the second set-point (unoccupied
mode)
-- Time schedule override: closing of this contact
cancels the time schedule effects
-- Out of service: this signal indicates that the chiller is
completely out of service
-- Chiller capacity: this analogue output (0-10 V) gives an
immediate indication of the chiller capacity
-- Alert indication: this volt-free contact indicates the
necessity to carry out a maintenance operation or the
presence of a minor fault.
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7
The underlying principles of this approach: the resulting
building will be economical to operate, offer increased
comfort and create a healthier environment for the people
who live and work there, increasing productivity.
Each certification program may address and prioritise
different green building design strategies according to local
and regional needs and legislation. The following example
looks at how Carrier’s new 30XW-V/30XWHV range helps
customers involved in LEED building certification.
*
Source USGBC: LEED
CONTROLS
■■ R-134a refrigerant
-- HFC-refrigerant with zero ozone depletion potential
■■ Leak-tight refrigerant circuit
-- Reduction of leaks as no capillary tubes and flare
connections are used
-- Verification of pressure transducers and temperature
sensors without transferring refrigerant charge
-- Discharge line shut-off valve and liquid line service
valve for simplified maintenance.
■■ Introduction
Energy usage and costs combined with increasing
concerns to reduce CO2 emissions are among the most
important environmental challenges in today’s world.
New and existing buildings are one area where energy
efficiency and the conservation of natural resources is a
high priority.
■■ Green building design
Design teams increasingly focus on designing “green
buildings” to address today’s energy efficiency and
environ-mental sustainability needs. A green building is a
building that is environmentally sustainable and has been
designed, constructed and is operated to minimise the
total impact of the environment.
HEATING HEATING
Carrier products and green
building certification
AIR TREATMENT
■■ The new generation of Carrier inverter-driven screw
compressors benefits from Carrier’s long experience in
the development of twin-rotor screw compressors. The
design of the Thunderbolt compressors is based on the
successful 06T screw compressors.
■■ Advanced control algorithms combine inverter frequency
output with motor input logic to minimise mechanical part
stress, resulting in best compression performance and
high chiller reliability. The compressor is equipped with
bearings with oversized rollers, oil pressure lubricated for
reliable and durable operation, even at maximum load.
■■ Other advantages:
-- If a fault occurs e.g. if the condenser is fouled or at
very high water temperature, the compressor does not
switch off, but continues operation at reduced capacity
(unloaded mode).
-- The silencer in the discharge line considerably
reduces discharge gas pulsations for much quieter
operation.
-- The condenser includes an oil separator that
minimises the amount of oil in circulation in the
refrigerant circuit and re-directs it to the compressor
function.
COOLING
VARIABLE-SPEED WATER-COOLED LIQUID CHILLERS
30XW-V 580-1710
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