Transcript The key to comfort and economy for heating and Air

The key to comfort and
efficiency for heating and
air-conditioning
15% fuel savings/4yr payback/$1000
8000
7000
6000
5000
FUEL EXP
SAVINGS
Exheat $
Cash
4000
3000
2000
1000
0
-1000
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yr 1
yr 2
yr 3
yr 4
totals
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A word about savings.
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Every building has a different relationship with
its cooling plant.
Some waste a lot. Most waste a lot.
Most have comfort problems.
Savings on electricity can range from 5-30%
Exquisite Heat will run it more comfortably
and efficiently for sure.
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Efficiency
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Reduced standby loss.
Increased exchange circulation
Greater circulation reduces air stratification
Cooler rather than cold air on moderate days
Reduced ducting temperature change
Less generation to satisfy comfort needs.
Reduced frost.
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Adjustment curv e will adjust to actual heat loss, where ever it might go.
f lexibility up or down
Boiler temp
Outdoor temp
thermostst inactive
140 degreesx
x
x
1PM
x
x
x
50 degrees F
x
x
x
x
x
7AM
160 degrees
7PM
x
x
x
x
x
190 degrees
7AM x
30 degrees
x
x
1AM
x
x
x
x
x
10 degrees
X = analy sis and adjustment of high limit at the end of the hour.
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How??
Precise
BTU extraction
for BTU gain.
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Exquisite Heat
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Adjusts cooling supply
temperature in response
to Thermostat demand
history.
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Even BTU distribution
Moderated temperatures
allow for more evenly
delivered temperature to the
space at longer cycles of
circulation.
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Temperature vs. Thermostat
The higher the air delivery
temperature the longer it
will take the thermostat to
sense the change.
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Simple Attachment
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Two wire Thermostat parallel connection
input.
Attach thermistor to supply output.
Connect low voltage control relay in series.
Attach 24 Vlt Power from existing source.
Program system variables.
Revisit until satisfied with installation settings.
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Outer environment
enclosed environment
radiator
temp
medium
ducts
air or
fluid
furnace or
boiler
ac unit
TT
pump
fan
temp
sensor
temp sensor
control
fire
HVAC System
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What happened?
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A changed philosophy of HVAC control.
The new goal is to satisfy an Ideal
Thermostat Demand ratio.
As Actual Thermostat Demand changes
in relation to Ideal Thermostat Demand,
the source output is adjusted every hour.
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Assumption 1
Increased
circulation
delivers even
comfort.
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Assumption 2.
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The closer the cooling plant
temperature is to the room
temperature requirement,
the more fuel efficient the
system.
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Thermostat
The thermostat takes all heat loss and heat
gain into consideration.
 The customer can adjust thermostat for
personal comfort.
Thermostat activity can be used to adjust
boiler, HVAC output to satisfy the space with
ideal circulation.
 The thermostat and energy source interact
intelligently for comfort and efficiency.
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For Exquisite Heat the constant is
IDEAL THERMOSTAT
DEMAND RATIO
Ideal Demand Ratio
A preset thermostat On ratio = 70%
The circulation rate at which the
heat/cooling source is providing the
precise BTU supply for satisfaction
and comfort distribution.
Thermostat On = Circulation On
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Constant
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Ideal Thermostat
Demand Ratio gives us a
constant for comparison
and adjustment.
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Actual Thermostat Demand
Ratio
The actual proportion of time a
thermostat “calls” for
comfortable temperature in a
given period of time. (60
minutes)
ADR
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Actual Demand Ratio
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Control takes thermostat on/off status reading
every second.
60 samples/minute x 60minutes =
3600 samples per hour.
If thermostat is on for 2520 times/3600
samples, the actual demand ratio =
2520/3600 = .70 = 70%
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What information do we need?
Previous hour adjusted cooling plant
cycle on time: 40 minutes
 = Actual Demand Ratio.
 Period of analysis = 60 minutes (590 min)
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Temperature change factor +
Ideal demand ratio = .70
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Actual demand ratio = .75
((ADR-IDR) x10) = TCF
ratio difference =.75 - .70 = +.05
Time Change Factor + .05 x 10= +.5
Cycle time = +.5
Temperature Change Increment
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Temp change increment is an arbitrary factor
we use to determine the degree of response we
want to make in the adjustment with the
temperature change factor.
1 Minute x .5 = +.5 Minute
2 Minute x .5 = +1 Minute
3 Minute x .5 = +1.5 Minutes
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New High Limit Temp calculation
Current Cycle Time= 40 Min
 ((.75 - .70) x 10)= +.5 x 3 Min =
+1.5 Min
 40 Min+ 1.5Min = 41.5 Min
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New Cycle Time (Higher)
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Cycle Time Settings
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40 Min + 1.5 Min = New ON Time
(Higher) = 41.5 Min
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Cycle rest time of 10 Min
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Time change factor
Ideal demand ratio = .70
Actual Demand ratio = .55
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Time Change factor = ((.55 - .70) x10)= -1.5
Time Change increment = 3 Minutes
Current ON Time = 40 Minutes
((.55 - .70) x 10)) = -1.5 x 3 minutes = -4.5 min
40 Min – 4.5 Min = New Cycle time
(Lower)= 35.5 Minutes
Factory Settings
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Each control comes from the factory set up to
attach and run.
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Advanced programming is available for those
who wish to use it.
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No computer knowledge is needed to install
the control.
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All Variables are changeable
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Ideal ratio .5-.8
Incremental change values: (1-5 Min)
Analysis Period times: 5-120 min
Absolute High and Low limits for alarms and
reset: 5, 10, 20min – , 30, 60, 90 Min
Initial start up Time set: <30-90> min
Break times: 5-60 Minutes or Proportional
Adjustment curv e will adjust to actual heat loss, where ever it might go.
f lexibility up or down
Boiler temp
Outdoor temp
thermostst inactive
140 degreesx
x
x
1PM
x
x
x
50 degrees F
x
x
x
x
x
7AM
160 degrees
7PM
x
x
x
x
x
190 degrees
7AM x
30 degrees
x
x
1AM
x
x
x
x
x
10 degrees
X = analy sis and adjustment of high limit at the end of the hour.
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Minute to Minute Comfort
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Between analysis within the hour, the
thermostat can increase the % call for
heat/cool, by running more or less than the
Ideal Demand ratio of 60%
If warmer the thermostat can run up to 100%.
If chillier the thermostat runs less than 70%.
The thermostat always responds to the call.
We only use TT information for analysis.
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Multi Zone Satisfaction
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Most cases are satisfied by
attaching analysis zone to average
zone in system. The rest of the
zones will float with variable
circulation for the hour.
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What has been done
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We have changed the philosophy of HVAC
control.
The new goal is to give enough to satisfy a
fixed Ideal Thermostat Demand ratio.
We adjust the output to meet that Ideal demand
at the thermostat.
We provide a more comfortable and more
efficient method of cooling interior space.
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Shut Down
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In the event of a control shut down:
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Power failure
Computer switches “disconnect
control relay” off and returns HVAC
to in series factory low voltage
controls.
Alarms
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Normally open or closed alarm relay is
activated upon shut down, or safety settings.
Trigger local alarm, communicator, or security
system.
Alarm central or direct dialer to owner and/or
contractor.
Additional flood, heat, smoke detection.
Cash Flow +
Day after day.
Year after year. It
more than pays for
itself.
Added Comfort
Free of Charge
The feature
customers notice first
Unconditional Guarantee
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Exquisite Heat will exchange failed
equipment for five years. Lease and rental
replacement will occur for the term of the
agreement.
Equipment will be removed and rental
agreement cancelled provided Accounts are
current. ( Do it Right!!! )
We are here to refine comfort and efficiency.
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Manufacturers
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Now have the opportunity to
develop efficient HVAC and
deliver system efficiency to the
comfort recipient.
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HVAC Contractors
 have the opportunity to deliver
unprecedented comfort and
efficiency to their customers.
 Exquisite Heat offers the best in
class for controlling existing
buildings without the need for
major renovation.
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Thank you !!
“Exquisite Heat” reg. trademark
www.Exqheat.com
914-588-4791