Scribd
Upload
22 views2 pages

Energy Conservation Opportunities 241

The document discusses energy conservation opportunities related to HVAC systems. It identifies 5 principles of energy conservation: turn it off, turn it down, tune it up, turn it around, and tear it out. HVAC systems account for most building energy use. Common ECOs for HVAC systems include comparing air and water flow measurements to specifications, maintaining motors and controls, reducing heating and cooling at the end of occupancy, closing blinds to reduce heat gain/loss, inspecting air outlets and ducts, and cleaning ducts.

Uploaded by

Rohit Shrestha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
22 views2 pages

Energy Conservation Opportunities 241

The document discusses energy conservation opportunities related to HVAC systems. It identifies 5 principles of energy conservation: turn it off, turn it down, tune it up, turn it around, and tear it out. HVAC systems account for most building energy use. Common ECOs for HVAC systems include comparing air and water flow measurements to specifications, maintaining motors and controls, reducing heating and cooling at the end of occupancy, closing blinds to reduce heat gain/loss, inspecting air outlets and ducts, and cleaning ducts.

Uploaded by

Rohit Shrestha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

Energy Conservation Opportunities 241

Chapter 15

Energy
Conservation
Opportunities

T he 5 Ts of energy conservation

1. Turn it off
2. Turn it down
3. Tune it up
4. Turn it around
5. Tear it out

In the 1900s, air conditioning systems dramatically changed the


way we live in the United States. As HVAC systems became more reli-
able, efficient and controllable, we were no longer dependent on the
weather for work or leisure. We made the environment adapt to our
needs. In fact, we started cooling to temperatures lower than the tem-
peratures to which we had previously heated. Now, HVAC climate con-
trol has become so reliable and affordable it is a common necessity in
industry and our homes alike. Today, almost all commercial buildings
have HVAC systems and most U.S. households have air conditioning.

ENERGY SYSTEMS

It’s generally assumed that the HVAC systems and lighting


systems account for most of a building’s energy use. HVAC en-
ergy consumption is affected in part by the common practice of

241
242 HVAC Fundamentals

specifying oversized heating and cooling equipment to compen-


sate for the energy inefficiency in a building’s design and con-
struction. The following are energy conservation opportunities
(ECOs) for HVAC systems and subsystems.

HVAC SYSTEMS

ECOs:
• Compare field measurements (air, water, steam and electri-
cal) with the air or water balance report, commissioning re-
port, and fan, pump, and motor curves to determine if the
correct amount of air and water is flowing.

• Use nameplate data to prepare an up-to-date list of motors


for fans, compressors, pumps, etc., and list routine mainte-
nance to be performed on each.

• Routinely check time clocks and other control equipment for


proper operation, correct time and day, and proper program-
ming of on-off setpoints.

• Reduce or turn off heating and cooling systems during the


last hour of occupancy.

• Close interior blinds and shades to reduce night heat loss in


the winter or night and solar heat gain in the summer or day.
Repair or replace damaged or missing shading devices.

• Inspect room supply air outlets and return and exhaust air
inlets, diffusers, grilles and registers.

• Clean ducts. Open access doors to check for possible obstruc-


tions, such as loose insulation in lined ducts, loose turning
vanes and closed volume or fire dampers. Adjust, repair or
replace these items as necessary.

You might also like