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NASA Site Survey, Thorough Analysis, and Energy Audit for NASA’s Building 46

Challenge: NASA is required to reduce their energy consumption by 3% each year, leading to 30% by the end of fiscal year (FY) 2015, as compared to an FY 2003 baseline. Johnson Space Center (JSC) is also required to perform energy audits on their facilities once every year in an effort to reduce energy consumption and optimize building system performance for all buildings. This building survey and report is an ASHRAE Level I report, with aspects included for an ASHRAE Level II audit which was developed from ASHRAE guidelines combined with a retro-commissioning report. The goal of the survey and report is to provide a comprehensive evaluation of the building systems operation and energy performance and to identify any improvements that would assist JSC in meeting its energy reduction goal.

NASA Building 46

  • Reduce annual energy consumption by 3%, targeting a 30% reduction by 2015 (2003 baseline)
  • Comprehensive evaluation of the building system operation
  • Optimize building system performance to reduce energy consumption
  • Identify areas for improvement to assist in meeting the energy reduction goal

  • Provide comprehensive energy and water audits per ASHRAE guidelines
  • Perform Retro-Commissioning services to provide functional testing of building systems to identify control and/or operational deficiencies
  • Log energy use data with Energy Star Portfolio Manager Software to establish Energy Utilization Index baseline
  • Identify and quantify Energy Conservation Measures to reduce energy consumption and utility costs

  • Implementation of all of the recommended ECMs will reduce electrical demand by up to 25 kW, and will save (each year):
    • 349,206 kWh
    • 157 MMBtu of steam
    • 880.8 MMBtu of chilled water
    • 45,496 gallons of water
  • Reduction of the Data Center PUE from 1.79 to 1.73

Solution: PTS assembled a team of engineers to assist in developing the auditing requirements as well as perform the Building 46 energy audit and functional testing. This included working with on-site NASA personnel and the maintenance contractor to determine the condition of the building systems and identify any Energy Conservation Measures (ECMs) that could be feasibly implemented. The survey was started with a kick-off which was followed by data collection and functional testing. Observations, deficiencies and recommendations were all compiled in a final report.

In addition to the functional testing of primary air handling units and pumps, the team focused on:

  • Review drawings and equipment schedules
  • Building control and automation system (controlled devices and control loops)
  • Existing local control strategies
  • Spot measurements of temperatures and electrical current
  • Review of existing ventilation air requirements
  • Review of existing exhaust make up and transfer air requirements
  • Building envelope integrity
  • Lighting and Electrical System
  • Steam System
  • Chilled Water System
  • Compressed Air
  • Domestic hot water
  • Discrepancies between EBI and the field
NASA Case Study

Recommended Energy Conservation Measures

Example: ECM# 1: Return AHU 3 to VAV System: AHU 3 was designed and is mostly installed to be operated as a VAV system. The fan is a variable pitch unit and there are VAV boxes installed throughout the ductwork.

Recommendation: The recommended strategy to reduce energy consumption at AHU 3 is to connect the existing VAV boxes and local zone thermostats into the BCS control system via digital controls. This will allow the system to respond to local zone conditions to reduce airflow and control the discharge temperature to match the demand in the space. By also replacing the variable pitch fan with a variable frequency drive connected to BCS and EBI, the operating conditions of the fan will be able to be monitored and controlled to match the airflow demand of the system and reduce electricity consumption.

  • Total Electrical Savings per Year: 53,556.8 kWh
  • Total Cost Savings per Year: $3,159.85
  • Estimated Project Cost: $20,000.00


energy conservation measures

Benefits: As a result of the energy assessment and retro-commissioning effort PTS was able to identify and recommend six (6) Energy Conservation Measures (ECMs) for NASA to consider. Implementation of all of the recommended ECMs in the report will reduce the facility electrical demand by up to 25 kW and result in an estimated annual savings of 349,206 kWh, 157 MMBtu of steam, 880.8 MMBtu of chilled water and 45,496 gallons of water. In addition to the reduction in energy savings, PTS estimates that the ECMs will result in an annual utility savings of $21,543.17. In addition to the ECMs, PTS also identified and made recommendations for twenty two (22) maintenance and repair deficiencies and thirteen (13) configuration control deficiencies. By having PTS perform the energy assessment and implementing the recommendations in the report, NASA will increase system efficiencies, reduce operating costs, improve the overall control and operation of the building equipment and increase the accuracy of system monitoring and trending.

PTS Design & Engineering, Inc. is a wholly owned subsidiary of PTS Data Center Solutions, Inc. and is a leading provider of diverse professional technical services. PTS offers full-spectrum support to commercial and industrial clients across multiple markets. Services include consulting, architecture, engineering, construction management, commissioning as well as operations and maintenance.

PTS Projects

Our primary markets include:

  • Manufacturing and Industrial Facilities
  • Energy Environmental Programs
  • Infrastructure
  • Technology
  • Office / Corporate Headquarters
  • Government / Public Facilities
  • Financial Services
  • Mission-Critical / Data Center
  • Sustainable Design
  • Laboratory
  • Healthcare
  • Hospitality / Hotel
  • Educational
  • Interiors
  • Historic Retrofit / Renovation
  • Resort / Gaming
  • Residential Developments
  • Retail / Restaurant
  • Religious
  • Exhibitions / Recreation
  • Architectural Lighting Design
  • Special Projects
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PTS has an impressive track record for unique architectural and engineering designs. We specialize in all aspects of architectural as well as mechanical, electrical, and plumbing (MEP) and building services engineering for virtually every type of building or structure.

In addition, we specialize in vendor-neutral design of all systems and sub-systems for all building types.

Further, our architects and engineers thrive on challenge. We aspire to achieve the optimal solution for every project. We do this by using a combination of proven design and engineering principles, processes, experience, and innovative thinking.

PTS Design & Engineering Services

PTS has an impressive track record for unique architectural and engineering designs. We specialize in all aspects of architectural as well as mechanical, electrical, and plumbing (MEP) and building services engineering for virtually every type of building.

PTS Design & Engineering, Inc. is a wholly owned subsidiary of PTS Data Center Solutions, Inc. and is a leading provider of diverse professional technical services. We offer full-spectrum support to commercial and industrial clients across multiple markets.

Value to Market Strategy

PTS aims to exceed your expectations by simply being your best consultant, whether you are an end user, a property developer, a contractor, or a peer architect/engineer. Our goal is to effortlessly deliver accurate, quick, and timely work, with minimal hand-holding.

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PTS is uniquely positioned in the industry to deliver the always available infrastructure and solutions that mission critical facilities demand.

  • Schematic Design
  • Design Development
  • Bid Evaluations
  • Equipment Specifications
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Our Data Center Design Goals

PTS has a highly skilled workforce that specializes in aligning the requirements of your IT personnel with the capabilities of the facility and the expectations of facility personnel.

Our goal is to create satisfied customers by emphasizing pre-design & planning, and to provide the optimal solutions that meet your requirements. The result is in an early & accurate alignment between scope, schedule and budget.

PTS understands the only acceptable level of downtime is zero. Your job performance and our reputation depend on it. Please contact us tell us about your project. Give us the opportunity and we’ll provide you with the justification you need to convince your management to take the next step.

Contact PTS for your Next Engineering Project

You shouldn’t have to compromise when it comes to your facility. Our expert team assesses your unique needs, and then employs a proven plan that reduces the amount of support infrastructure you will need.

The result is higher efficiency, reduced complexity and better resiliency at lower cost… all at the same time.

Contact us for a quick chat to discuss PTS Design & Engineering services for commercial and industrial projects.

Contact PTS today:
(201) 337-3833

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