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Energy Studies A-Z

Albina Head Start – Richard Brown Center Head Start Logo

The Albina Head Start – Richard Brown Center is located at 606 NE Ivy in Portland. The facility has two levels above ground and a basement. The total area of the facility is 7,800 sf. The building consists of three separate houses are attached by a common corridor. Four 80 MBH standard efficiency (80%) furnaces provide heat to the basement, 1st, and 2nd of the facility. Four electric thermostats control the split systems that heat and cool the facility. MSE evaluated the following energy efficient measures for the facility:

  • Replace existing standard efficiency furnaces with 92% efficient condensing furnaces

  • Install zone damper control (VVT system) for basement and 1st level split systems (F-1)

  • Replace electric thermostats with electronic programmable thermostats on F-1, 2 & 3

 



Astoria City Hall Astoria City Hall

The Astoria City Hall Building is a 15,000 square foot combination office building located in downtown Astoria. The building is heated but is not air-conditioned. The building is heated by a 450 MBH oil-fired steam boiler located in the basement of the facility. A thermostatically controlled centrifugal exhaust fan is located on the roof. The purpose of this fan is to pull warm air out of the building. MSE evaluated the following energy efficient measures for the facility:

  • Install high efficiency gas-fired boiler

  • Install high efficiency steam boiler and replace electric zonal heat with steam radiators

  • Install hot water condensing boiler and replace existing steam radiators with hot water radiators

  • Install R-19 roof insulation

  • Install double pane windows

  • Replace existing steam boiler, steam radiators and electric zonal heat with multi-zone air-to-air heat pumps

  • Install 4 kW photovoltaic solar collectors on roof of building

 


Astoria Police/Fire Department

The Astoria Police/Fire Station is a single level, 15,860 square foot facility located at 555 30th Street in Astoria. The facility was constructed in the early 1990’s. About 50% of the building houses the fire department. The remaining 50% houses the police department. The central heating plant for the facility is a 500 MBH Weil-McLain cast iron sectional boiler with a rated efficiency of 80%. Two Pace multi-zone air handling units supply air to the facility and four ceiling mounted hot water unit heaters heat the fire truck high bay area. MSE evaluated the following energy efficient measures for the facility:

  • Install VSD’s on the AHU-1 & 2 supply and return fan motors

  • Convert multizone air distribution to VAV reheat air distribution system

  • Install CO2 demand ventilation control

  • Interlock high bay overhead doors with existing unit heaters

  • Replace existing (1) 500 MBH cast iron boiler with (1) high efficiency (Eff. = 92%) 500 MBH condensing boiler

  • Install VSD’s on (2) tertiary hot water pumps

  • Replace high bay unit heaters with gas-fired infrared heat system

  • Install destratification fans in the fire truck high bay area

 



AT&T Wireless (AW) Building

 

The AT&T Wireless (AW) Building is a 122,000 square foot facility located at 1600 SW Fourth Avenue, Portland. The facility was constructed in 1968. The facility is has 9 floors and 2 levels of parking. The facility is used almost exclusively as an office building although one floor is predominantly used for data processing equipment. The central chilled water plant is located in the penthouse. The system consists of two chillers connected in a series configuration. MSE evaluated the following energy efficient measures for the facility:

  • Install variable speed drives on CT-1

  • Replace existing 320-ton Trane centrifugal chiller with high efficiency (0.55 kW/ton) 350-ton centrifugal chiller

  • Variable speed drive on new high efficiency chiller

  • High efficiency condensing boiler with hydronic heating coil to replace electric duct heaters in SF-1 & 2

  • Retrofit the existing dual duct air distribution system with a variable air volume (VAV) reheat system

  • Install integrated dry-bulb economizer on the EEM-6

  • CO2 ventilation control for SF-1 & 2

 



Columbia County Courthouse/Annex

 

 

This facility is 52,800 sf and is located at 230 Strand Street in St. Helens, OR. The courthouse and Annex are adjoined and connected by common corridors. Common gas and electric meters serve the facility. The Courthouse building has numerous courtrooms and several offices that make up the first and second level of the building. The HVAC system that serves the Annex is a constant volume reheat air distribution served by (7) air handling units. MSE evaluated the following energy efficient measures for the facility:

  • Install Direct Digital Controls to control all HVAC systems and lighting in the Courthouse/Annex.

  • Install high efficiency 1500 MBH condensing boiler (Eff.-92%) to replace existing 1375 MBH cast iron boiler (Eff.=75%).

  • Convert constant volume reheat air distribution system to variable air and volume (VAV) system with hot water reheat and VSD’s in AHU-1 thru AHU-7.

  • Install 15kW photovoltaic solar panels on the roof of the Annex.

 


 

Commonwealth Building

 

The Freightliner Corp II facility is a 218,000 square foot facility located SW Sixth in Portland. The facility was constructed over 60 years ago and has gone through several renovations. The majority of the facility is used for office space. The first level of the facility has a deli (this area was not considered in the study). Two 160-ton air- cooled reciprocating chillers provide chilled water for cooling the building. Three 750 MBH A.O. Smith Legend 2000 boilers provides hot water for the building space heating system. MSE evaluated the following energy efficient measures for the facility:

  • EEM-1: Install 4-pipe zone fan coil units to replace the existing (2) multizone air handling units

  • EEM-2: Replace existing (3) A.O. Smith boilers with (3) condensing boilers

  • EEM-3: Install integrated dry-bulb economizer

  • Install de-coupled chilled water pumping system

  • Install direct digital control (DDC) system to replace existing pneumatic control system

  • Install CO2 demand ventilation control

 



Downtown Roman Catholic Parish

The Downtown Roman Catholic Parish (DRCP) Building is a 12,000 sf facility located at 801 W. Burnside in Portland. The building was constructed as a hotel in 1906 and was converted to a parish in the 1950s. The central boiler plant for the facility consists of (1) 1200 MBH Burnham steam boiler. This boiler was installed in 2000 and a central air distribution system is served by a single Pace multizone air handling unit. MSE evaluated the following energy efficient measures for the facility:

  • Install DDC controls to control HVAC system (AHU-1, EF-1, HWP-1, CWP-1, CU-1, and CT-1) (EEM-1)

  • Install VSD and premium efficiency motor on cooling tower

  • Remove domestic hot water system from central boiler and install separate high efficiency (92%) tankless hot water heater to provide domestic hot water.

  • Install CO2 demand control for ventilation system (will require the installation of EEM-1)

  • Install VSD on AHU-1 supply fan.

 



Executive Building

The Executive Building is an 11-level, 104,000 square foot office Building located at 811 SW Sixth Street in downtown Portland. The facility was constructed in the early 1950’s and has gone through several renovations. The majority of the facility is used for office space. The first level of the facility has a Washington Mutual branch bank and coffee kiosk. The central heating plant consists of (1) 5845 MBH Weil McLain cast iron sectional boiler with a thermal efficiency of about 75% (estimated). MSE evaluated the following energy efficient measures for the facility:

  • Replace VAV control and standard efficiency motors on SFC-1, SFH-1 and RF-1 with variable speed drives and high efficiency motors

  • Replace existing (1) 5,945 MBH cast iron boiler with (2) high efficiency (Eff. = 92%) 2,000 MBH condensing boiler

  • Install direct digital control (DDC) system to replace existing pneumatic control system to control HVAC systems

  • Install VSD on existing cooling tower fan motor

  • Install CO2 demand ventilation control

  • Install VSD on 300-ton rotary screw compressor motor on CH-1

 



Governor Hotel and Jake's Grill

The Governor Hotel and Jake's Grill is a 176,820 square foot Hotel and Restaurant located at 614 S.W. 11th, Avenue in downtown Portland. The facility resides in two buildings that were joined in the center and renamed the Governor Hotel in the early 1990’s. All areas, with the exception of the 5th floor ballroom (added in 2004) are heated and cooled by water source heat pumps (WSHPs). The east and west wings are served by two separate WSHP loops. The WSHP units in each guest room are controlled by an Alerton control system. MSE evaluated the following energy efficient measures for the facility:

  • Replace west wing Water Source Heat Pump (WSHP) loop boilers with

  • High efficiency (92%) condensing boilers.

  • Replace east wing Water Source Heat Pump (WSHP) loop boilers with

  • High efficiency (92%) condensing boilers.

  • Replace west wing Domestic Hot Water (DHW) boiler with high efficiency condensing boiler.

  • Replace east wing DHW boiler with high efficiency condensing boiler.

  • Replace Jake's Grill DHW boiler with high efficiency condensing boiler.

  • Replace East Wing WSHP units with high efficiency WSHP units.

  • Replace West Wing WSHP units with high efficiency WSHP units.

  • Replace West Wing forced draft cooling tower with induced draft cooling tower.

  • Replace East Wing forced draft cooling tower with induced draft cooling tower.

  • Install Variable Speed Drive (VSD) on East Wing cooling tower fan motor.

  • Install VSD on west wing cooling tower fan motor.

  • Replace 15-ft Jake's Grill kitchen exhaust hood with heat recovery hood.

  • Replace 15-ft Jake's Catering exhaust hood with heat recovery hood.

  • Install Melink exhaust hood controls on Jake's Grill kitchen exhaust hood.

  • Install Melink exhaust hood controls on Jake's Catering exhaust hood.

  • Replace existing Alerton control system with DDC system.

  • Install system to recover heat from Jake's Grill and Jake's catering refrigeration systems to preheat domestic hot water for hotel.

  • Replace WSHP units serving Jake's Grill, Lobby, ballrooms and common areas with central air-cooled chiller.

  • Combination EEM-6 and EEM-7.

 



Harsch Development Building

The 1022 SW Salmon Building is a 3-level, 28,000 square foot office Building located in downtown Portland. The facility was constructed in 1923 and has gone through several renovations. The majority of the facility is used for office space. The first level of the facility has a dry cleaner (this area was not considered in the study). The central heating plant consists of (2) 450 MBH cast iron boilers with a thermal efficiency of about 60% (estimated). Air conditioning for the building is provided by a rooftop unit (RTU-1) with a nominal capacity of 75 tons. MSE evaluated the following energy efficient measures for the facility:

 

  • Replace existing (2) 450 MBH cast iron boilers with (1) high efficiency (Eff. = 92%) 500 MBH condensing boiler

  • Install direct digital control (DDC) system to replace existing pneumatic control system and replace (34) pressure dependent VAV terminal units with pressure independent units

  • Install VSD on RTU-1 supply fan

  • Re-zone hot water fin tube radiation system

  • Replace existing RTU-1 with a high efficiency RTU (EER=9.5)

  • Install CO2 demand ventilation control

 



Hunziker Professional Center

 

The Hunziker Professional Center is a 16,000 square foot complex with three separate buildings located at 7440 SW Hunziker Road in Tigard. The facility was constructed over 20 years ago. The majority of the facility is used for office space. The HVAC systems serving the complex consist of (13) split system air-to-air heat pumps and (7) rooftop air-to-air heat pumps. MSE evaluated the following energy efficient measures for the facility:

  • Replace (7) RTU air-to-air heat pumps with high efficiency heat pumps (SEER = 13) w/ airside economizers

  • Replace (7) RTU heat pumps and (13) split system heat pumps with high efficiency heat pumps with airside economizers (SEER = 13)

  • Install programmable thermostats on (7) RTU air-to-air heat pumps

 



Jesuit High School

 

Jesuit High School is a 220,000 sf facility. The building envelope is as follows: 8” CMU with unknown insulation value, double pane windows, and R-19 roof insulation. A central steam plant serves the campus. The steam plant consists of (2) low-pressure steam boilers as follows: a 5100 MBH Weil-McLain cast iron sectional and a 9000 MBH West Coast water tube. The Business Center has a 300 MBH hot water boiler. Buildings that were constructed after the 1970’s have steam-to-hot water heat exchangers and hot water radiators in all rooms. Buildings constructed during the original construction (early 1950’s) have steam radiators. MSE evaluated the following energy efficient measures for the facility:

  • Install gas-fired infrared heaters in old and new gyms

  • Install CO2 control and variable speed drives on the air handling units on MAU units serving Xavier and Ignatius Halls

  • Install VSD’s on RTU’s on Science Building and Performing Arts Building

  • Install CO2 sensors and demand control ventilation control in Performing Arts Building

  • Install de-stratification fans in new and old gyms

  • Install Me-Link Intellihood controls on kitchen exhaust hood system

  • Occupancy sensors in Performing Arts Building classrooms to set back temperature when space not occupied

  • Remove buildings from central steam plant and install local condensing hot water boilers at each building

  • Install CO2 sensors in both gyms and VSD’s on air handlings units and provide ventilation demand control through existing DDC system

  • Replace 300 MBH cast iron boiler in the Business building with a 300 MBH condensing boiler

 



Koll Center at Creekside 4

The Koll Center at Creekside 4 is a 65,000 square foot facility located at SW Creekside Place in Beaverton. The facility was constructed about 20 years ago and has seen several tenant improvements, but no central system enhancements. The majority of the facility is used for office space. Two 80-ton air- cooled reciprocating chillers provide chilled water for cooling the building and heating is accomplished through electric heat strips in terminal units. MSE evaluated the following energy efficient measures for the facility:

  • Install direct digital control (DDC) system to replace existing pneumatic Control system

  • Install VFD's and Premium Efficiency Motors on existing Vane Axial Fans

  • Install CO2 Ventilation Controls

  • Replace existing Air-Cooled Chillers with new Water-Cooled Chiller Plant

  • Install VFD's on Chilled Water Pumps

  • Install De-Centralized Cooling for Data Processing Center

  • Replace existing 3rd Floor 5-ton Spilt System with Fan-Powered Box

  • Replace existing Fan-Coil units with Terminal Units

     

 



The Life Source Natural Foods Store

 

The Life Source Natural Foods Store (LSS) is a 10,741 sf grocery/health food store located at 2849 Commercial Street in Salem. The HVAC system for the facility consists of (5) 4-ton and (4) 5-ton rooftop package units with electric cooling and gas heating. The average electric efficiency of these units is about 1.25 kW/ton. The average gas efficiency is about 75%. These RTU’s serve (9) separate constant volume air distribution systems. MSE evaluated the following energy efficient measures for the facility:

  • Install parallel refrigeration rack to replace individual refrigeration units

  • Install integrated dry-bulb economizers on (7) RTU's

  • Install run-around heat recovery system to heat deli make-up air with heat recovered from refrigeration system

  • Install liquid pressure amplification on liquid lines of refrigeration systems

  • Install heat recovery exhaust hood in deli

  • Install destratification fans in grocery store area

  • Install DDC control system for HVAC system

 



The Mayer Building

The Mayer Building is a 6-level, 56,000 square foot office Building located at 1130 SW Morrison Street in downtown Portland. The facility was constructed in the early 1900’s and has gone through several renovations. The central heating plant consists of (2) cast iron steam boilers with a thermal efficiency of about 75% (estimated). The WSHP air distribution systems are constant volume. The (4) rooftop A/C units serving the 6th floor also have constant volume air distribution systems. MSE evaluated the following energy efficient measures for the facility:

  • Install VSD on existing cooling tower fan motor.

  • Install direct digital control (DDC) system to replace existing electric control system to control HVAC systems.

  • Replace existing (35) WSHP units with (35) high efficiency WSHP units with ECM motors.

  • Install high efficiency motor on existing garage exhaust fan.

  • Replace existing (2) cast iron steam boilers with (2) high efficiency (Eff. = 92%) 500 MBH condensing boilers.

  • Install carbon monoxide (CO) sensor and control for garage exhaust fan.

 



Mount Scott Funeral Home

 

The 7,000 sf Mount Scott Funeral Home (MSFH) building was constructed over 40 years ago. In addition, the two adjoining properties have also been constructed. The adjoining properties have an area of about 1,600 square feet, each. The funeral home is served by a 210 MBH (estimated) oil-fired furnace that is located in the basement. Each of the adjoining properties is served by 48 MBH (estimated) oil fired furnaces located in the respective basements. MSE evaluated the following energy efficient measures for the facility:

  • Replace existing multizone air distribution system (including F-1 and AC-1) with individual DX fan coil units with hot water heating coils

  • Install high efficiency condensing boiler

  • Install high efficiency gas-fired condensing furnaces in the MSFH, Boise St. and 58th Street facilities

  • Install separate heating and cooling system for the Chapel in MSFH

  • Install variable air volume (VAV) reheat air distribution system, condensing boiler and water cooled package unit

  • Install direct digital control system, VSD on AC-1

 



Oregon Education Association (OEA) Building

The OEA building is located at 345 NE 8th in Portland, OR and was originally constructed in the early 1960’s. The building had major remodels in 1985 and 2001. The Windows are tinted double pane and there is no insulation in walls of the buildings shell. There are R-11 insulation in the wood frame walls and R19 in the ceiling. The HVAC system consists of Multizone central air handing unit with DX cooling coil and electric heating coil in hot deck and Semi-hermetic 25 ton reciprocating compressor provides refrigeration for the MZ unit. MSE evaluated the following energy efficient measures for the facility:

  • High efficiency condensing boiler to.

  • Convert multizone to VAV reheat system.

  • Convert multizone to VAV reheat system with DDC controls.

  • Replace forced draft evaporative condenser with induced draft evaporative condenser.

  • Integrated dry-bulb economizer on multizone unit.

  • Install (2) split systems to replace existing MZ unit.

  • Relocate return air grilles on upper level.

 



Oregon State Department of Lands Building

 

The Oregon State Department of Lands Building is a 3-story, 72,000 square foot office building located at 775 Summer in Salem. The air distribution system for the entire building is variable air volume. The central heating plant consists of (1) Weil McLain cast iron sectional boiler with a thermal efficiency of about 75% (estimated). Several VAV terminal units are distributed throughout the building. MSE evaluated the following energy efficient measures for the facility:

  • Replace existing cast iron boiler with high efficiency (Eff. = 92%)

  • Condensing boiler

  • Install CO2 demand ventilation control

  • Replace VIV control AHU-1 Supply and Return fan motors

  • Install direct digital control (DDCcontrol system to control HVAC systems

  • Replace existing 166-ton reciprocating chiller with high efficiency Centrifugal chiller

  • Install VSD on existing cooling tower fan motor

  • Install variable speed drives (VSD’s) on existing 5-hp chilled water pumps Install VSD’s on (2) 5-hp hot water pumps

 



Paulson Building

The Paulson Building is a 49,760 square foot facility located at 811 SW Naito Parkway, Portland. The facility was constructed in the early 1980’s. The facility is used almost exclusively as an office building although there is a significant amount of computer equipment (PC’s and servers) in the facility. The central plant for this facility consists of an 80-ton Mammoth rooftop package unit and fan powered mixing boxes (FPMXB) serves the perimeter zones of the building. MSE evaluated the following energy efficient measures for the facility:

  • Variable speed drive on AC-1 supply fan

  • Install electric reheat coils in VAV terminal units and install DDC controls on HVAC system

  • Replace existing AC-1 (Mammoth unit) with water cooled rotary screw chiller and air handling unit

 



Portland Development Commission Headquarters

 

The PDC headquarters building is a 7-level, 62,000 sf building that was originally constructed in the early 1900’s. The building went through a major renovation in 2002 prior to being occupied by PDC. The facility is heated and cooled by a water source heat pump system. One WSHP serves the core area of each floor and multiple WSHP’s serve the perimeter zones of each floor. The core area of the building is in the cooling mode during virtually all-operating hours. Heat extracted from the core area is distributed to the perimeter WSHP units via the WSHP loop. MSE evaluated the following energy efficient measure for the facility:

  • Connect 15-ton water-cooled data processing cooling unit to WSHP loop.

 



Portland Medical Dental Building

 

The Portland Medical Dental Building (PMD) was constructed in the early 1920’s. At that time the building had operable windows and a radiator based heating system. However, the building did not have air conditioning. In about 1947 air conditioning was installed in the building. One 300-ton centrifugal chiller provides chilled water to the facility and two Weil-McLain 1500 MBH cast iron steam boilers (Eff. = 75%) provide heat for the facility. MSE evaluated the following energy efficient measures for the facility:

  • Replace existing (50) fan coil units with new fan coil units with 2-way modulating valves

  • Replace existing (2) Weil-McLain boilers with (2) high efficiency condensing boilers

  • Same as EEM-1 except with direct digital control (DDC) system

  • Install induced draft cooling tower (with VSD) to replace existing once-through condenser cooling system

  • Install variable speed drives (VSD’s) on (5) tertiary pumps

  • Install airside economizer on AHU-1

  • Install hydronic economizer on AHU-1

  • Install water source heat pump (WSHP) system

  • Replace existing centrifugal chiller with high efficiency (Eff. = 0.50 kW/ton) centrifugal chiller

 



Portland Public Schools Educational Service Center

The Portland Public Schools Educational Service Center located at 510 N. Dixon Ave, Portland, OR and is a 285,000 square foot facility that contains administrative offices, boardroom, warehouse/shipping/receiving area, and industrial kitchen, among others. The central boiler plant for the facility consists of (2) 2,500 MBH and (1) 1,250 MBH Cleaver Brooks firetube boilers. The central chilled water plant is located in the basement adjacent to the boiler plant. The chilled water plant has two chillers and the central air handling system is served by a single built up air handling unit (AHU-1). MSE evaluated the following energy efficient measures for the facility:

  • Replace existing (2) firetube boilers (Eff. = 80%) with high efficiency condensing boilers.

  • Replace (2) forced draft cooling towers with induced draft open cooling towers.

  • Install Variable Speed Drives (VSDs) on (2) existing forced draft cooling tower motors.

  • Install infrared heat in the carpentry shop and adjoining electronics high bay area to replace forced air heating system.

  • Install infrared heat in the metal shop, the Multnomah County maintenance shop and the glazing shop to replace existing forced air heating system.

  • Remove steam boiler B-3 and replace with quick recovery steam cleaning unit for use in the kitchen.

  • Install infrared heat in the warehouse/shipping/receiving area to replace forced air heating system HVU-18.

  • Install infrared heat in the maintenance high bay corridors to replace forced air heating systems.

  • Install VSD on carpentry shop air handling unit fan in HVU-2.

  • Install VSD on machine shop air handling unit fan in HVU-1.

  • Install VSDs on supply fans in maintenance area high bay corridors heating and ventilating units HVU-13 thru 17.

  • Install VSD on the Multnomah County maintenance shop and adjoining glazing area air handling unit fan in HVU-5.

  • Install VSD on electronics repair high bay area air handling unit fan in HVU-4.

  • Install VSD on the warehouse/shipping/receiving high bay area air handling unit fans.

  • Install new DDC system to control all central plant, air handling units, coils, dampers and VAV terminal units.

  • Install solid-state control system on compressor rack in kitchen.

  • Recover heat from compressor rack in kitchen to preheat hot water.

  • Perform more frequent filter changes and maintenance on the warehouse/shipping receiving area forced air-heating system.

  • Install CO2 demand ventilation in boardroom area.

  • Install de-coupled chilled water distribution system with VSDs on secondary chilled water system.

  • Install de-coupled hot water distribution system with VSDs on secondary hot water pumps

  • Remove 3,000 sf single pane skylight from foyer area and replace with roof to match existing.

  • Install timed override control for lighting in building for weekend, holiday and after hour workers.

  • Replace constant volume reheat air distribution in Records Management Area with VAV reheat system.

  • Install Carbon Monoxide (CO) control on exhaust system serving warehouse area.

  • Install VSDs on variable pitch vane axial supply fans SF-1 and SF-2.

  • Install VSD on variable pitch vane axial supply fan   SF-3.

 



Rogue Valley Mall

Rogue Valley Mall (RVM) is a 250,000 square foot facility located in Medford, OR. The facility was constructed in 1985. The facility consists of about 150 retail stores that open onto a 110,000 square foot common area. The mall has two levels. About 20% of the mall roof area is has double pane sky lighting. The common area is served by (13) constant volume rooftop units (RTU). Several RTU’s serve zones on both the first and second floors. The entire facility is served by a pneumatic temperature control system. MSE evaluated the following energy efficient measures for the facility:

  • Replace (13) RTU’s with (13) high efficiency (EER=11) RTU’s with economizers

  • Change Constant Volume Forward Curve Centrifugal Fans to VFD

  • Install CO2 demand ventilation control

  • Install direct digital control (DDC) system to replace existing pneumatic control system

  • Install Central Plant Chiller and Boilers to replace DX coils and electric resistance heating

 



Tillamook Building

The Tillamook Building is a 2-level, 13,000 sf office building located at 2105 NE 39th in Portland. The facility also has an occupied basement. The building was constructed in the mid-1960’s and has gone through very little renovation since its original construction. The entire facility is used for office space. The central heating and cooling system consists of (5) 75 MBH standard efficiency furnaces with DX cooling coils. MSE evaluated the following energy efficient measures for the facility:

  • Install VAV reheat air distribution system with DDC controls and VSD on RTU supply fans.

  • Install (1) 750 MBH high efficiency condensing boiler.

  • Install CO2 demand ventilation control

  • Install double pane windows to replace the existing single pane windows

 



Triax Metal Products Building

The Triax facility is a 65,000 square foot facility located at 1880 SW Merlo, Beaverton. The facility was constructed over 25 years ago and has gone through several renovations. The facility has about 4,000 square feet that is used for office space. The balance of the facility is production and assembly area. Rooftop package units (RTU) provide all cooling and heating for the facility. MSE evaluated the following energy efficient measures for the facility:

  • Install high efficiency chiller (0.62 kW/ton) and air handling units to replace existing rooftop package units

  • Replace constant volume air distribution system with variable air volume reheat air distribution system

  • Install VSD on AHUs serving the VAV reheat system in EEM-2

  • Install Direct Digital Control (DDC) system

  • Replace electric resistance heating system with high efficiency condensing boiler and hydronic heating loop

  • Install air curtains on overhead doors

  • Install run-around heat recovery system on MUA-1

  • Install R-19 insulation in ceiling of high bay production area

  • Install de-stratification fans in high bay production areas

 



US Bank Milwaukie Branch

The US Bank branch is a 2-level, 7,800 square foot bank building located at 3230 SE Milwaukie Avenue. The facility was constructed in the 1960’s and has gone through several renovations. The facility is used as a branch bank, office space and training facility. The central heating plant consists of (1) 500 MBH cast iron boiler with a thermal efficiency of about 70% (estimated). A 22-ton water-cooled chiller supplies chilled water to the air-handling units in the building. MSE evaluated the following energy efficient measures for the facility:

  • Replace existing (1) 500 MBH cast iron boiler with (1) high efficiency (Eff. = 92%) 500 MBH condensing boiler

  • Install direct digital control (DDC) system to replace existing pneumatic control system

  • Install CO2 demand ventilation control

  • Install VSD and premium efficiency motor of hot water distribution pump

  • Install VSD and premium efficiency motor on chilled water distribution pump

  • Install destratification fans in branch bank area

  • Convert two multizone air distribution system to VAV reheat air distribution system

 



Willamette View Retirement Center

The Willamette View complex is a 400,000 sf multi-building complex located at 12706 SE River Road in Portland. The facility was constructed about 1955 and has gone through several renovations. The central heating plant is located in the Manor building and consists of (3) 150 hp firetube steam boilers with an overall efficiency of about 65% (estimated). Two air-cooled reciprocating 125-ton Carrier chillers provide chilled water for the facility. These units are about 20 years old. Two 12-ton air-cooled package units (Pace) serve the Café and Auditorium areas. MSE evaluated the following energy efficient measures for the facility:

  • Replace Café and Auditorium 12-ton RTU's (EER=8.2) with High Efficiency RTU’s (EER = 11) and VAV reheat air distribution and DDC controls

  • Replace Café and Auditorium 12-ton RTU's (EER=8.2) with High Efficiency RTU’s (EER = 11)

  • Install run around heat recovery system in kitchen exhaust and make up air system

  • Install high efficiency (0.55 kW/ton) rotary screw chiller with open induced draft cooling tower

  • Install de-coupled chilled water pumping system on existing chillers

  • Replace existing (3) 150 hp central firetube boilers with local condensing boilers (Eff. = 92%)

  • Install VSD’s on 250 apartment fan coil units.

  • Install CO2 demand ventilation control in Café and Auditorium areas

 



Yamhill County Courthouse Building

The Yamhill County Courthouse Building, located at 535 NE 5th, McMinnville, is the district courthouse for Yamhill County. The County Jail is also connected to the facility. The building has 2 levels above ground and a basement. The area of the building is about 53,000 sf. The facility has a central plant located in the basement. A 150-ton, water-cooled rotary screw chiller serves the chilled water loop for the building. The central heating plant consists of a 1,500 MBH Weil-McLain cast iron sectional steam boiler. This boiler was installed when the building was constructed in the late 1950’s. The boiler has an estimated average efficiency of 75%. MSE evaluated the following energy efficient measures for the facility:

  • Replace 1,500 MBH cast iron steam boiler (Eff. = 75%) with (2) 500 MBH hot water condensing boilers (Eff. = 92%) (EEM-1).

  • Install DDC control system to replace existing pneumatic control system.

  • Install VSD on hot water pumps for condensing boilers described in EEM-1.

  • Convert constant volume reheat system to VAV reheat system.

  • Install CO2 demand ventilation control for courtrooms.