Reed Berinato
Jaharis Center
Mechanical Option
Boston, MA
Building and Plant Energy Analysis Report
October 27, 2004
Executive Summary
A building plant and energy analysis was preformed on the Jaharis Family Center
for Biomedical and Nutritional Research in Boston, Massachusetts. Within the scope of
this report is the evaluation for LEED green building rating certification. Due to the
domination of laboratory and laboratory support spaces within this building, LEED
certification is not applicable. However when compared to a typical building containing
laboratory space which uses 85 kWh/ft2-year (Energy Efficiency in California Laboratory
Type Facilities, Lawrence Berkley July 31, 1996,) the Jaharis Center’s consumption of
28.3 kWh/ft2-year is significantly less. Many facets of this building restricted it from
being a “green” building, including its supply of 100% outdoor air. Included in this
report is an examination of ASHRAE Standard 90.1-1999 certification. The wall and
roof assemblies complied with Standard 90.1, and the window assemblies nearly comply.
The lighting power densities for the typical spaces examined were also found to be
compliant with Standard 90.1 with the exception of the men’s restroom. The lost rentable
space of the Jaharis Center was also found to be 23,051 square feet, or 12.8% of the gross
floor area. Equipment serviceability was in scope of this report as well, and was found to
be satisfactory. Also, the mechanical systems cost was appraised, and found to be
$3,173,400 or approximately $17.63 per square foot of floor area.
This report is also a compilation of load and energy estimates performed on the
Jaharis Center located in Boston, Massachusetts. This nine story building is only fit out
on the basement level through level three, so all analyses are performed on these levels
only which are served by AHU’s 3 & 4. The duct configuration of AHU’s 3 & 4 require
all analyses to be performed as if they acted as one air handler. Both the load and energy
estimation sections of this report involve two methods of calculation. First, a hand
calculation is performed, and then a computer based model is employed. The software
used in this report is Carrier’s HAP v4.01.
For the load estimation section of this report, hand calculations utilized design
data from ASHRAE Standard 90.1-1999 along with data acquired from the design
documents. The HAP analysis utilized internal weather data included in the software, as
well as the data from the design documents. The hand calculation of the building load
resulted in a load of 276 tons at 514 sqft/ton, while the HAP analysis determined the
building load to be 617 tons at 123 sqft/ton. Actual equipment in the building, including
diversity factors, totals 800 tons.
The second section of this report, energy estimates, was also completed first using
hand calculations then the HAP Software. The hand calculation portion of the energy
analysis uses weather data acquired from BinMaker™ Plus Software. The hand
calculations resulted in a total annual operating cost of $121,972.66 per year and a cost
per square foot of $1.66 per year. The HAP simulation returned a value of $174,150 or
$2.29 per square foot.
Although an energy report was not available for this building, a comparison is
made of the calculated loads and operating costs of the Jaharis Center within this report.
The difference between the calculated values for load and operating cost using the two
different methods are 341.9 tons and $47,863.94 respectively.
3