Conducting An Energy Analysis

Conducting AnEnergy Analysis

Professional Energy Analysis – Summary

Energy Analysis Preliminaries

elP = elPgen

genH´Btu/h

gen F´ Oil, Coal mlb/h

HV

gen = 0.36

elF´ elH´

dhwF´ Oil mlb/h

Gas Vft3/h

dhwH´´

hwQBtu/h

hwF´ Oil mlb/h

Gas Vft3/h

liF´kw liH´Btu/h

HV

dhwH´Btu/h, Therms boH´Btu/h

boF´ Oil mlb/h

Gas Vft3/h

stQ

acF´kw kpH´Btu/h

elsQBtu/h

elsF´kw elsH´Btu/h

evQ

cQ hQ

hwH´

cd

elmF´kw el shfF´ bHP

Fan/Pump

apF´kw apH´Btu/h

eltF´kw eltH´Btu/h

liapF´kw liapH´Btu/h

Light and Appliances

Electrical Space Heating

HV

CO2

AHU

dhwQ

h COP h COP

evQ hQh

EA – Preliminaries

MS Word Files can be

downloaded

to the HP49+

with

Transfer Algorithms

EA –Preliminaries

nipuna (Sanskrit): skilled, capable of, kind or friendly towards

greengurus

“Nipuna”

en:p:ÙN:

Program with

Energy

equations as MS Word Files


EA –Preliminaries

Download

To HP49+

MS Word Files HP49+ Files

EA –Preliminaries


EA –Preliminaries

ni


HP 49+Solves

Series of multiple

equations

with a few keystrokes

EA –Preliminaries


EA –Preliminaries


Identify Layout of facility

Operating Schedule

Compile an Equipment List.

Establish Geographic Location/Degree Days/Weather Data.

EA –Preliminaries

Gathering the data for analysis

Analysis of Bills:

Know the rate structure in effect for the facility.

Separate energy bills into their components.E.g. demand charge and energy charges

for the electric bill.

EA –Preliminaries


EA –Preliminaries


EA –Preliminaries


Get Equipment List before

conducting the audit

EA –Preliminaries


EA –Preliminaries


EA –Preliminaries


Initial Walk-through Tour

Introductory Meeting

Audit leader should meet with the - facility manager and the

- maintenance supervisor.


Audit Interviews

- facility manager

- finance officer

- floor supervisors and equipment operators

-maintenance supervisor and staff




EA –Preliminaries

Get the tools together

Infrared Thermometer

(must know emissivity)

EA – Audit Preliminaries


Light Meter

Parts of facility might be over- or

under-lighted



Digital Snap-Around Volt-Ohm-Ammeter



HVAC Combo Kit



Power Factor Meter



Ultrasonic Leak Detector

Valuable for testing steam

traps



Air VelocityMeasurement

Anemometers

Rotating Vane

Pitot Tube

Hot Wire



Blower Door

To determine the air leakage

rate



Combustion Analyzer



Manometers





Lighting Inventory:

- light fixtures- lamp types, sizes and numbers- levels of illumination- uses of task lighting


Lighting Inventory


Lighting Inventory


Lighting Inventory


Building Envelope


Building Envelope



Building Envelope


Boiler and Steam DistributionAge?

Combustion Efficiency

Btu/h Rating

AFUE

Pressures

Temperatures

Boiler Tune-up?



Boiler and Steam Distribution

Look for leaks!

Steam Traps!

HVAC System

Inspect:

Evaporator

Condenser

Filters.

kW/Ton Rating

EER, SEER


Fans and Blowers

HVAC System


Motors

Measure:

Voltage

Current

Power Factor

Note:

Horse Power,

Load Factor

Fan and Blower Electric Motor — 1/2 HP

Reversible Electric Motor — 5 HP, 1740 RPM


http://www.northerntool.com/webapp/wcs/stores/servlet/NTELargeImageView?rfno=200306775&storeId=6970

Motors

Variable Speed

Drives


Hot Water Distribution System


Energy Audit

Special Topics

Codes and

Standards

Codes and Standards

Codes and Standards

FERC

Codes and Standards

FERC

Codes and Standards

Natural Gas

?

Codes and Standards

ASHRAE Standard 90.1 – 2001

Codes and Standards

Codes and Standards

Indoor Air Quality

Codes and Standards

*1000 Btu/ft2/year

Rate Structures and

Energy Bills

Rate Structures and Energy Bills

Electric

Power Flow


FERC orders 888 and 889

Electric

Deregulation


Electric

Energy vs.

Demand


Electric: Energy vs. Demand

Large Quantities of Electricity cannot be stored


Electric

Components of Bill


Electric

Sample Rate Structue


Electric

Sample Rate Structue


Electric

Power Factor

greengurus

“Nipuna” Program with

Electrical

equations as MS Word File


Electric

Power Factor


Electric

Special Rates


Electric

Special Rates

Natural Gas

Interruptible Rates

Highest Priority Customers pay more but will not be interrupted at times of high demand


Monthly Bill Analysis

Profile for a metal products company in Florida

Look for red flags


Energy Balance


Demand Balance


Look for red flags


Look for particularities


Life Cycle Costing

Life Cycle Costing

Example: Choice between two Compressors

Typical Life Cycle Example

Life Cycle Costing

Typical Life Cycle Example

greengurus

“Nipuna” Program with

Eco-nomics

equations as MS Word File

Life Cycle Costing

Documents

Conducting An Energy Analysis