Sales & Marketing Alignment: How to Synergize for Success
Ghthermo
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Greenhouse Thermal Imaging
HVAC Applications
Juan Carlos Cort´es Molinera
Electronic Engineer
April 2, 2014
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CONTENTS
TITLE
BACKGROUND
Physics
HVAC APPLICATIONS
Predictive Maitenance
Building and Energy Audits
RESULTS
Thermograms
END
Thank you
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DEFINITION
Infrared thermography is a contact-free and non-destructive
technique offering measurement and imaging of surface
temperatures.
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STEFAN BOLTZMANN LAW
All objects radiate infrared energy in proportion to their
temperature and emisivity. The Stefan-Boltzmann equation
quantifies that relationship:
Q = σ × × T4
Where:
Q = heat energy (W)
σ = 5, 669.10−8(W/m2)
emissivity value 0 < < 1
Absolute Temperature in K
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WEIN’S DISPLACEMENT LAW
A body radiates a wide
spectrum of frequencies at
any given temperature.
µm =
b
Tk
Where:
µm = wavelenght of
maximun radiation (W)
b = Wien’s displacement
constant = 2,897
TK = temperature of the
surface (K)
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HVAC APPLICATIONS
Predictive Maitenance (PdM). Thermography allows
corrective action to be taken before costly system failures
occur.
Building and Energy Audits. Thermography helps to
reveal missing insulation, HVAC air flow and equipment
issues, radiant heating malfunctions, compromised
roofing.
...and much more.
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PDM - MECHANICAL
Boilers
Temperature profile
Refractory insulation
Hot spots on the walls
Pumps and motors
Misalignment in rotating equipment
High bearing and oil temperatures
Valves
Broken or defective valves
Defective seals
Pipework
Blockages and discontinuities
Ductwork
Air leakage
Moisture accumulation
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PDM - ELECTRICAL
Poor or loose contacts
Unbalanced loads
Overloading
Inoperative capacitors
Voltage tracking on insulators
Undersized conductors
Poor breaker connections
Defective fuses
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BUILDING AND ENERGY AUDITS
Missing or uneven insulation coverage in ceilings and
walls
Heat generation and lighting temperature
Thermal heat loss around doors, windows and glass
Moisture contamination evaluations
Conductive loss due to thermal bridgingmal Image
Energy loss from pipe work or duct work
Temperature stratification
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THERMOGRAMS
”Palacio de Cristal de la Ar-
ganzuela” (1992) - Madrid
(40.393714, -3.699969)
