Burnside Rocket CASE STUDY Portland, Oregon · 2015-10-27 · antifreeze soln. from ground source....

CASE STUDYBurnside RocketPortland, Oregon

http://guerrilladev.co/completed-projects/burnside-rocket/http://locate-stte.org/

Smriti ChauhanAbhishikta Pal


LOCATION1111 East Burnside Street, Portland, OR

BUILDING TYPENew Construction, 2007

USEMixed Use, DetachedHome to Noble Rot Wine Bar, Epicenter hair Salon and Pacific Rim Winemakers

DESIGNER/ ARCHITECTKevin Cavenaugh

BUILDERBob Schommer, A. C. Schommer & Sons

LOCATION & CLIMATESite Description: Neighborhood ResidentialClimate: Pacific Marine

RATINGLEED Platinum Certification

http://locate-stte.org/http://www.usclimatedata.com/climate/portland/oregon/united-states/usor0275


AWARD2011 Urban Land Institute’s Award for Excellence

DESIGN FEATURESUnderground AquiferArcade BalconiesEco-roof with edible roof top gardenChanging local art panels for shadingGeothermal HeatingWater Harvesting

http://locate-stte.org/


SITE38 feet by 100 feet

AREA16233 sq ft


GEOTHERMAL SPECIALISTJohn Lower of Total Energy Concepts

https://www.portlandoregon.gov/bps/article/437377

GEOTHERMAL OPEN LOOP SYSTEM – THE STORYJohn Lower proposed a closed-loop system with vertical heat exchangers that required drilling

21 bore holes 165 feet deep

Gravelly soil below the site prevented the driller from using a standard drilling rig, the driller switched to a rotary rig that allowed them to advance the well casing while drilling

Drilling still slow and difficult, it became clear it wouldn’t be cost-effective to drill 21 bore holes

At 280 feet they reached an aquifer that delivered 68 gallons per minute and the plan switched to an open-loop system served by an extraction and injection well

*Antifreeze is an additive to lower freezing point of a water based liquid. It is used to achieve freezing point depression and boiling point elevation.

Geothermal System – (Heating & Cooling)

High Density geo-thermal pipes

Open Loop Closed Loop

Pure water from a Well / aquifer

Envt. Friendly antifreeze soln. from ground source

Horizontal

Vertical

Horizontal

Vertical

Pond/Lake

Cost-EffectiveLittle maintenance

Open Loop SystemVertical

More efficientThe water from supply wellis used as a heat source in the winter and as a heat sink in the summer.

Disadvantageschange in water supply. Water quality can also be an issue as it can lead to mineral build-up inside the heat pump exchanger and require periodic cleaning.

Heat Pump Urban - Less Land SpaceDepth of vertical holes : – 180 – 540 ft.Typically, an open loop system will use2 U.S. gallons of ground water/minute/ nominal ton of equipment pond/lake.

absorbs energy directly from water pumped out of the well, rather than relying on a water solutionre-circulating through a series of

underground looped pipes.

Aquifer

Closed Loop System

Heat Pump Urban - Less Land SpaceDepth of vertical holes : – 180 – 540 ft.Typ. Installation :360 linear feet of 1-1/4” high-density geo-thermal pipe / nominal tonHoles filled with bentonite grout after looping pipesCost > horizontal & pond/lakeBut pipe requirement < horizontal&pond/lake

Vertical


During the heating cycle, a Water Furnace geothermal heat pump uses the earth loop to extract heat from the ground.

As the system pulls heat from the loop it distributes it through a conventional duct system as warm air.

The same heat energy can also be used for a radiant floor system or domestic hot water heating.

Geothermal Heating & Cooling Process

Aquifer

Wat

er H

eate

r

Heat

Pum

p

WaterSupply Air Return Air

Air

Heating mode

Aquifer

Wat

er H

eate

r

Heat

Pum

p

Water

Supply Air Return Air

Air

Cooling modeHeat absorptionHeat dispersion

In the cooling mode, the heating process is reversed -creating cool, conditioned air throughout the home.

Instead of extracting heat from the ground, heat is extracted from the air in your home and either moved back into the earth loop, or used to preheat the water in your hot water tank.


When Single Stage Makes Sense“operating” cost. Two-stage compressors clearly run more efficiently and reduce operating costs.Single stage equipment usually costs less up front, but over time it will cost more because of operating and maintenance expenses. Single stage units can achieve efficiency ratings as high as 16 SEER, but the better high-efficiency equipment is all two-stage.

A single-stage compressor is either on at full speed, or it’s off, but a two-stage compressor has two levels of operation. normal and maximum.On “cooler” hot days, below 85-90 degrees, a two-stage air conditioner will run on the lower, normal speed. When the temperature cranks up later in the day, as it does in the North Dallas area, it will run at maximum speed.

Advantages of Two-Stage AC CompressorsThe two levels of operation provide these important benefits.Fewer Temperature Swings – longer cooling cycle times allow your home to be cooled gradually, so it isn’t either too hot or too cool.

Removes Humidity Better – because the air conditioner is running for longer periods of time (while using less electricity) it removes up to twice as much humidity from the air, which increases comfort.

Uses Less Electricity – because a two-stage compressor runs frequently at its lower, normal level, it uses much less electricity than a single stage compressor running full out for shorter periods.

Less Equipment Strain – your air conditioner is under the most strain (and uses the most power) when it turns on and off. Longer cooling cycles reduce the number of times it has to turn on and off, which puts less wear and tear on the equipment.

Most high-efficiency air conditioners also feature multi-speed condenser fans designed to move more air using less electricity. Improved blade and exhaust diffuser design allow them to operate more efficiently, while reducing fan noise.

Source : https://www.wbdg.org/resources/geothermalheatpumps.php


https://www.wbdg.org/resources/geothermalheatpumps.php


FIRST FLOOR PLAN 1 The Chesterfield retail space2 Nervo.tv office space3 Entry court/ stairway4 Locker/ shower

http://guerrilladev.co/wp-content/uploads/2015/02/BurnsideRocketFourthFloor.pdfhttp://cms.ashrae.biz/EUI/

ENERGY - kBtu/yrRetail(38 x 100) x 0.5 x 65= 123500

Office(38 x 100) x 0.5 x 42= 79800


SECOND FLOOR PLAN

http://www.terrafluxus.com/archives/date/2010/page/3http://cms.ashrae.biz/EUI/

ENERGY - kBtu/yrOffice(38 x 100) x 42= 159600


THIRD FLOOR PLAN

http://www.terrafluxus.com/archives/date/2010/page/3http://cms.ashrae.biz/EUI/

ENERGY - kBtu/yrOffice(38 x 100) x 42= 159600


FOURTH FLOOR PLAN 7 Rocket restaurant dining bar8 Green terrace below9 Kitchen

10 Terrace11 Outdoor Vestibule

http://guerrilladev.co/wp-content/uploads/2015/02/BurnsideRocketFourthFloor.pdf

ENERGY - kBtu/yrRestuarant(38 x 100) x 467= 1,774,600


ROOF PLAN

Aquifer at a depth of 280 ft.Delivers 68 gallons/minuteExtraction and injection well

Site Area – 38 ft. x 100 ft.Number of Stories - 4Heated Floor Area – 16,500 sq. ft.

Size of system- 6 ton – (capacity of producing 72000 btu of power)- 3 ton – (capacity of producing 36000 btu of power)72000 * 3 = 21600036000 * 3 = 108000

= 324000 btu/hr= 324 Kbtu/hr (Generation capacity)= 260 Kbtu/hr (Need)

Efficiency measurements

EER – output cooling energy(Btu)/ input electrical energy(Wh)COP – power output/power input {Typical systems 3.5-4}

6 water furnace water source heat pump

Hollow core concrete slab to distributeConditioned air instead of using ductworkFinishing - ConcreteSmall floor plates – limit interior walls

Heat Pump System- 6 ton water furnace ground-source

heat pumps with dual speedcompressors and desuperheaters –16.6 EER cooling, 5.4 COP Heating 3 ton water furnace ground-source heatpumps with single speed compressors15.3 EER cooling, 4.7 COP heating



http://cms.ashrae.biz/EUI/


http://cms.ashrae.biz/EUI/


ENERGY CALCULATIONS

http://guerrilladev.co/wp-content/uploads/2015/02/BurnsideRocketFourthFloor.pdfhttp://cms.ashrae.biz/EUI/

1st Floor-Retail (38 x 100) x 0.5 x 65= 123500

1st Floor- Office (38 x 100) x 0.5 x 42= 79800

2nd Floor- Office 38 x 100 x 42= 159600

3rd Floor- Office 38 x 100 x 42= 159600

4th Floor – Restaurant 38 x 100 x 467= 1,774,600

TOTAL = 2,297,100 kBtu/yr= 673,200kWh/yr

As there are 40% savings in energy (269,280 kWh/yr) due to geothermal system, the total energy required is 403,920 kWh/yr.

URBAN AREA SERVEDThe building sits on a 38’ X 100’ lot, has no parking space, and houses 50 new full-time jobs that didn’t exist prior

72000 * 3 = 21600036000 * 3 = 108000

= 324000 btu/hr= 324 Kbtu/hr (Generation capacity)= 260 Kbtu/hr (Need)


SYSTEM COST$309,839


INCENTIVES AND TAX CREDITSThe project qualified for $7,175 in Energy Trust incentives and a $61,066 grant from the Green Investment Fund, a competitive grant program that supports innovative green building projects in Portland. A $60,000 Oregon Business Energy Tax Credit further offset the net system cost.

PROPERTY TAX EXEMPTIONThe value that the ground-source heat pump system adds to the building is exempt from assessment for property tax purposes under the Oregon alternative energy system property tax exemption (ORS 307.175). Estimated property tax savings of $11,000 per year.

WATER COST SAINGSBecause the well provides all the water for the building, the Rocket is not connected to the city water system and has no water utility costs.



INCREASED OPERATING REVENUERocket tenants have full-service lease agreements where utilities are included, so Cavenaugh realizes the full benefits of the building’s low operating and maintenance expenses for higher profits. This allows higher profits than the triple net lease model, which passes operating costs to tenants.

MAINTAINANCE COST SAVINGSMaintenance savings alone can pay for the cost of a water-source system in less than 10 years because there’s no need for a boiler and cooling tower..

DURABILITYGround-source systems are guaranteed for 10 years, but an Environmental Protection Agency study has shown that they typically perform for 30 to 70 years.

POLICY INVOLVEDSecuring water rights from the Oregon Water Resources Department, followed by permits from the Oregon Department of Environmental Quality, Multnomah County and the City of Portland. With help from hydrologist Roger Smith of RNSA Groundwater Consulting, water rights and permits were secured, but the process delayed the project by several months.



WATER STRATEGIESGreen Roof- 30% of rooftop is edible gardenDry WallRainwater Harvest

WASTE STRATEGIESLocal Recycled Material98% construction waste diversion

ENERGYThe building uses an ultra efficient heat recover ventilator along with a high efficiency open-loop geothermal heat pump (ground source)

The concrete structure has hollow core concrete slab flooring to distribute conditioned air throughout, providing both radiant heating and cooling



OTHER COSTSDesign Fees: $266,000Permits: $63,000System Development Charges: $138,000Construction: $2,469,000Green Technologies: $400,000LEED Documentation: $105,000

STAKEHOLDERSArchitecture: Francis Dardis, FBD ArchitectsGeneral Contractor: Bob Schommer, A. C. Schommer & SonsLandscape Architect: Pat Lando, Lando and AssociatesStructural Engineer: Wade Younie, DCI EngineersMechanical Engineer: Dan Kohn, HK ElectricalEnergy Modeler: Brian Thorton, Thorton Energy ConsultingAdditional: Roger Smith, Hydrologist, RNSA Groundwater Consulting

Steffen brocks, LEED consultant, Green Building ServicesRalph DiNola, LEED Consultant, Green Building ServicesDon Parrish, Plumbing Engineer, MEP ConsultingZach Suchara, Lighting Consultant, Luma Lighting Design

METRO TOD Program Funding

https://www.wbdg.org/resources/geothermalheatpumps.phphttp://geosmartenergy.com/pdf_files/the_news/OpenVsClosedLoop-Chad-MechBus-1009.pdf

eight feet deep. A series of 200 to 250 linear feet of 1-1/4” high-density geothermal pipe loops per nominal ton are submerged at the bottom of the body of water. Two pipes are then buried in the ground to carry energy from the lake or pond to the house or commercial building.

vertical holes in the ground ranging from 180 to 540 feet deep. A typical installation would require about 360 linear feet of 1-1/4” high-density geothermal pipe per nominal ton.


Mixed use urban infillCatalyst for local businessAnchor along the East Burnside Commercial CorridorIncrease transit ridership -20310 annual trips

Implications:

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Burnside Rocket CASE STUDY Portland, Oregon · 2015-10-27 · antifreeze soln. from ground source....

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