Achieving Net Zero with a 649,848 Sq. Ft. Industrial Complex Klas C. Haglid PE, RA, CEM CEO & Founder of Haglid Engineering and Associates, Inc. 649,848 Sq. Ft. Industrial Complex Overall Floor Plan Project Summary Project Summary Total Project Area (sq. ft.) Annual Energy Cost ($) Reduction from Baseline: Proposed (%) Reduction from Baseline: Actual (%)*
Total Project Cost ($) *Achieved April 2012 Net power to grid = 9108 kWh 649,848 $1,691,278 38% 0% $3,196,418 Certificate of State Performance Sources for screening building projects EPA Energy Star Benchmarking Portfolio Manager Buildings with benchmarking scores under 50 are good candidates for ECMs (energy conservation measures).
Buildings with low R-value walls or high infiltration rates are good candidates for envelope upgrades. DOE Building Usage Profiles Buildings with very high heating rates for percentage of energy usage are generally good candidates for ECMS. Mechanical Room Equipment Heat Loss The Room temperature is at 73.7 F is cooling the mechanical equipment from part of the refrigeration plant are at 178F ERM Eliminate Thermal Bridges
Thermal Gain/Loss Between the Boiler Room and the Refrigerated Warehouse Area The industrial building has the boiler room which generates heat adjacent to the refrigerated warehouse The Thermograph illustrates the heat transfer issue between the two room and makes it clear the necessity for better insulation in the separating wall Envelope Solution Adding 4-6 of insulation in specific regions of the refrigeration spaces, up to R values = 38. The construction of a new wall approximately 15 x 15 located in
between the Mechanical room and the Refrigerated space. This wall will provide ease of installation for insulation upgrade as well as seal the refrigerated space from piping and mechanical room heat. Thermal gain/loss through the un-insulated wall between the refrigerated warehouse and the warehouse space with no refrigeration or air-conditioning Envelope Solution The second wall will be constructed in between the two large temperature and humidity differences within the refrigerated warehouse space. Each wall will be constructed of 12 hollow concrete brick and covered with the proposed insulation towards the interior of refrigerated areas
$21,713.00 $21,713.00 $155,695.00 $178,420.00 $178,420.00 heat gain from lighting fixtures in refrigerator/freezer areas The previous lighting fixtures did not only consume a tremendous amount of energy but produces undesired heat which proved to be a great cost factor Lighting Solution
Lighting controls for facility spaces and the proposed upgrades of lamps and fixtures Use high efficiency LED in freezer/ refrigerated areas can be used with occupancy sensor. LEDs have immediate start up. Lighting Project Cost = $281,700.00 heat loss within the boiler and mechanical room. Comfort issues in mechanical room, caused operator to find ways to cool with refrigerated areas Heat Gain from the Skylights Thermal issues Fading of stock
Reduced roof foot print for solar panels Roofing Solution The Roof upgrade entailed improving previous construction to an overall construction of R-30+ above all Refrigerated Warehouse space. The new construction must was coated with a reflected roof system to prevent heat absorption of solar radiation. Roof construction must be able to handle future Solar Power Generation implementation. Roof: Skylights: 5,000.00 Skylights: $$ 5,000.00
Drains: $5,200.00 Drains: $5,200.00 Value and and Reflective Reflective Upgrade: Upgrade: $1,506,938.00 RR Value $1,506,938.00 Total Roofing Estimate = $ 1,517,138.00 Total Envelope Upgrade = $ 1,842,860.00 Heat gains from exterior doors
Note: 38.8 F wall temp. with the door at 59.3 F Improve R-value of door and seals Reduce infiltration and thermal losses, latent loads Heat gains from underneath exterior doors Note: 72.9 F infiltration of heat and humidity Door Solutions Selected doors within the refrigeration areas were replaced and upgraded with new doors.
New doors will be tighter, have better thermal resistance, and be more easily accessed with the use of controls. Doors are high-speed opening and closing to prevent heat transfer of infiltration. All loading dock doors were equipped with Frommelt PITMASTER Under-leveler Seals and Lip Cornor Seals. heat gain from occupants within the loading area outside the freezer space HVAC Solution Energy recovery ventilation (ERV) will be implemented in combination with many of the rooftop unitary equipment serving the office space areas. Building Performance Equipment, Inc. ERVs will be the products used for these measures. All installations must be commissioned for proper flows. Using variable speed drives for fan motors.
Use existing exhaust system of the serviced areas whether it from the unitary equipment itself or dedicated exhaust fans, caps, goosenecks, etc. Estimated Cost: Soft Costs: Management/Commissioning: Total ERV Estimate = $232,846.93 $23,284.69 $23,284.69 $ 279,416.31 Energy Recovery Energy Recovery Ventilation Schedules Winter
EQUIP Summer Actual HX Total Cooling Total Heating Model No. F DB
Summary of P4P Program Metrics * Consumption values and initial benchmark score from portfolio Manager Statement of Energy Performance Report Cost of Installation ERV; 19.74% Lighting; 7.88% Refrig. Ctrls; 8.16% Roof; 14.45% Envelope; 49.76% Annual Electric Energy Saved
Roof; 11.62% ERV; 17.11% Envelope; 21.22% Lighting; 19.67% Refrig. Ctrls; 30.39% Annual Gas Energy Saved Roof; 16.89% ERV; 37.25% Envelope; 45.85% Electric Energy Consumption Before
ERP Electric Consumption Before ERP Primary Heating; 2.52% Cooling Compressor; 22.44% Receptacles; 42.39% Other Cooling Acc.; 0.46% Tower/Cond. Fans; 5.56% Condeser Pump; 4.42% Lighting; 22.21% Electric Energy Consumption After ERP Primary Heating; 3.93% Cooling Compressor; 9.17%
Other Cooling Acc.; 6.22% Tower/Cond. Fans; 4.04% Condeser Pump; 0.43% Receptacles; 55.32% Lighting; 20.88% Kbtu/ft2 Energy Consumption in Kbtu/ft2 Before and After ERP 90 80 70 60 50 40 30 20
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After all ecm upgrades and 4.4 Megawatt Solar array April 2012, the subject building produced 9,214 kwh more than it consumed. The building became Net Zero and produced slightly more power than it used. California has adopted Net Zero as the Basis of Design for new permitted construction in 2020! After all Ecms Construction Questions 1. A Net Zero Building is defined as: A. Buildings with no energy consumption. B. Will be the basis of design for new construction in California as of 2020. C. A building that generates as much power as it consumes
with solar electric, hydroelectric or some other form of onsite power generation. D. All of the Above. Questions 2. What state or area already has Net Zero as a basis of design? A. New York B. Delaware C. California D. Alaska E. All of the Above. Questions 3. Using a Thermal Imaging system is a good method to? A. See through walls. B. Evaluate large walls or roof thermal performance. C. Wall measurement.
D. Both A and B Questions 4. What is a good source for evaluating national energy usage trends or building usage trends? A. Local Code Officials B. EPA-Energy Star Benchmarking C. DOE D. Both B and C Questions 5. What needs to be included to make a very large industrial complex a good candidate for a Net Zero Building Project?: A. High Performance building envelope with reduce air infiltration. B. Energy Recovery. C. High Efficiency Lighting.
D. High Performance HVAC with well commissioned controls. E. All of the above.
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