Thermal Energy Replacement
Continuously adds small amounts of
heat energy to just match the heat loss through the building envelope.
The building is a kind of thermal battery. The PACE System uses
outdoor conditions to determine the rate of recharge. The result
is steady state comfort combined with minimum energy consumption.
It's not how much heat you need… but how little
Most
large buildings are self-sufficient for heat and even require internal
cooling during the winter months. Therefore, it's not how much heat
a building needs but how little, consistent with maintaining comfort
at the perimeter. This is what the PACE control system is all about.
PACE provides steady-state comfort based on the principle of Thermal
Energy Replacement "PACE continuously matches heating system
output to the building envelope's heat loss. With PACE, the heat
is always ON" in just the exact degree needed to maintain comfort.
In
contrast, a thermostatically-controlled system is either fully ON
(catching up) or fully OFF (falling behind the heat loss). When
it's OFF, thermostats get turned up, but this doesn't really solve
the problemit only widens the temperature control error and
increases energy consumption.
PACE
is, a "Weather-Based" control system. The system uses
outdoor sensors to respond to temperature and wind/rain effect.
Window-mounted solar sensors signal a reduction in heat output corresponding
to solar gain on each exposure. In office buildings, no internal
feedback is allowed. In all other buildings, PACE sets the high
limit for thermostatic operation.
With
Weather-Based Control, less heat is required to maintain the comfort
level. Thermal Energy Replacement enhances all aspects of thermal
comfort. Relative humidity is higher, mean radiant temperature more
constant, and air velocity lower. As a result, tenants feel comfortable
at a lower interior air temperature. This lower temperature is the
building's "balance point'; which determines the minimum amount
of heat energy required.
The
balance point can be gauged by experience or by observing how far
the outdoor temperature can fall before heat is required. PACE control
computes the degree day heating load based on the balance point.
For each degree the balance point is lowered, the heating load is
reduced by about 4°/,. A ten degree reductionnot uncommonis
a 40% savings!
The
heating system response is also calibrated to use only a percentage
of total capacity at "worst case" for a particular building.
For example, if the heating system installed has double the capacity
of what the building envelope requires, then the response range
is limited to 0 to 50%. Demand charges are reduced accordingly Conventional
controls use 100°/) of capacity in each ONcycle and can incur
100% demand charges even in mild weather.
The savings
potential is enormous
The
lower balance point and reduced system response translate to savings
of 25 to 50 percent in most cases. Just how much in your case can
be calculated with accuracy once the building and heating system
characteristics are known.
General
Electronic Enterprises provides a free PACE Energy Assessment Evaluation
service. The calculation establishes the building's minimum heat
energy requirement. With this data, historical (actual) operating
costs can be compared to protected costs using a PACE operated system.
Local energy rates, including demand charges, are used to produce
the dollar savings amount for a payback analysis.
Conversion
is easy
PACE
has a Modular Power Controller which is ideal for retrofit applications.
Each control relay is matched to an individual heating circuit.
The enclosure is mounted adjacent to your existing load panel. Wrong
and associated labor are minimal. Rewiring of heating circuits is
not required in most cases.
The
PACE retrofit is no mere upgrade of existing controls: it is truly
a conversion to the far more effective controlconcept of Thermal
Energy Replacement Yet no major changes are required in the physical
heating system. It is a rare opportunity, but you have to take the
first step. CLICK HERE TO COMPLETE
THE PACE ENERGY ASSESSMENT EVALUATION FORM TODAY!