Now showing items 1-20 of 1004

    • A Study to Determine the Energy Impact of Adding Polarshield to Air Conditioning Systems 

      Cromer, C. J. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      PolarShield is a polarized refrigerant compressor oil additive containing the a-olefin molecule which is a commonly used oil additive to reduce high pressure viscosity breakdown. The manufacturers of this air conditioner ...
    • Using Utility Bills and Average Daily Energy Consumption to Target Commissioning Efforts and Track Building Performance 

      Sellers, D. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      This paper discusses using basic utility data that is readily available from utility bills to focus targeted retrocommissioning efforts. It also discusses how to use this information to spot emerging problems related to ...
    • A Residential Duct Leakage Case Study on 'Good Cents' Homes 

      Bryant, J. A.; Perez, R. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      The “Good Cents” program has been adopted by many cities across the United States and has encouraged builders to employ aggressive energy conservation building techniques in residential applications. The program is well ...
    • Continuous Commissioning(SM) of a Thermal Storage System 

      Turner, W. D.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      Chilled water thermal storage systems can reduce the electrical demand charge during the onpeak months. However, operational problems such as the inability to fully charge the system or premature discharge of the stored ...
    • Development of Load Forecasting Procedures for the Texas A&M University System 

      Baltazar-Cervantes, J. C.; Lim, C.; Haberl, J. S.; Turnder, W. D.; Claridge, D. E. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      This paper reports on the effort to develop load-forecasting procedures for the Texas A&M University System (TAMUS). Such procedures are being investigated to determine if the TAMUS can benefit from the pending deregulation ...
    • Performance Analysis of Dual-Fan, Dual-Duct Constant Volume Air-Handling Units 

      Joo, I. S.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      Dual-fan, dual-duct air-handling units introduce outside air directly into the cooling duct and use two variable speed devices to independently maintain the static pressure of the hot and the cold air ducts. Analytical ...
    • Coordinated Control of HVAC Systems 

      Federspiel, C.; Lanning, S. D.; Li, H.; Auslander, D. M. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      This paper describes the development of new control logic for starting and stopping energy-intensive equipment in buildings such as staged air-conditioning units. The concept is to use pulse-width modulation (PWM) instead ...
    • Stipulations in Performance Contracting M&V: the Good, the Bad, and the Ugly 

      Stetz, M.; Webster, L.; Bradford, J. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      Performance contractors (PC) often use stipulations for part or all of their measurement & verification (M&V) efforts. The value of stipulations are low cost and easy implementation (good). Disadvantages include uncertain savings ...
    • ASHRAE's Proposed Guideline 14P for Measurement of Energy and Demand Savings: How to Determine What Was Really Saved by the Retrofit 

      Haberl, J. S.; Reeves, G.; Gillespie, K.; Claridge, D. E.; Cowan, J.; Culp, C.; Frazell, W.; Heinemeier, K.; Kromer, S.; Kummer, J.; Mazzucchi, R.; Reddy, A.; Schiller, S.; Sud, I.; Wolpert, J.; Wutka, T. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      ASHRAE has recently completed the development of Guideline 14 to fill a need for a standard set of energy (and demand) savings calculation procedures. Guideline 14 is intended to be a guideline that provides a minimum ...
    • An Overview of Proportional plus Integral plus Derivative Control and Suggestions for Its Successful Application and Implementation 

      Sellers, D. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      PID control loops are becoming quite common in the commercial, institutional, and industrial HVAC industry. Proper application and tuning of this control algorithm can bring many efficiency and performance benefits with ...
    • Evaluation of Emerging Diagnostic Tools for Commercial HVAC Systems 

      Friedman, H.; Piette, M. A. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      This paper compares and evaluates the capabilities of six emerging diagnostic tools for commercial HVAC systems. We present a brief description of the diagnostic tools, and then focus on evaluating the features of the ...
    • Measured Energy Use Indices for 27 Office Buildings 

      Haberl, J. S.; Sreshthaputra, A.; Claridge, D. E.; Turner, W. D.; Harmon, K.; Kisselburgh, J.; Mase, R. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      Energy use indices for 27 government office buildings are presented that have been assembled from hourly monitored data as part of the Texas LoanSTAR program and other efforts at the Energy Systems Laboratory. These indices ...
    • Monitoring and Verification Procedures Used in the Texas LoanSTAR and Rebuild America Programs 

      Farouz, S.; Baltazar-Cervantes, J. C.; Haberl, J. S.; Claridge, D. E. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      The monitoring and verification procedures that have been developed for the Texas LoanSTAR program and the ESL's Rebuild America Program have become a foundation for a number of other state and federal M&V programs, including ...
    • Energy Management Program at Atlanta Postal Service Distribution Center 

      Brown, M.; Ansari, A. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      The US Postal Service operates more than 38,000 post offices across the country and spends $350 million annually on utilities (1). Driven by President Clinton's 1999 Executive Order that mandates a 35 percent reduction in ...
    • Accounting for the Occupancy Variable in Inverse Building Energy Baselining Models 

      Claridge, D. E. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      The occupancy factor is often underestimated in inverse modeling of building energy use, or accounted for by grouping the daily data in occupied and unoccupied groups which are modeled separately. For instance, in institutional ...
    • Retrocommissioning's Greatest Hits 

      Haasl, T.; Potter, A.; Irvine, L. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      It is possible to save thousands of dollars in energy costs through a few low-cost operational adjustments but those opportunities are often hidden. Retrocommissioning is a systematic investigation process for improving ...
    • Laboratory Air Handling Unit System 

      Cui, Y.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      An innovative AHU system is presented in this paper. The proposed AHU system is called a Laboratory Air Handling Unit (LAHU) system since it is most suitable for the buildings where one section (laboratory) has 100% exhaust ...
    • Energy Use in the U.S. Commercial Sector - Energy Information Administration Data, Information and Analyses 

      Boedecker, E. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      The Energy Information Administration (EIA) is the independent statistical and analytical agency within the U.S. Department of Energy. As such, EIA has a wealth of energy data and analyses available for public use, including ...
    • Energy Efficient Single Stack Exhaust Fan Systems (E3S3F) 

      Wang, G.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      This paper first investigates the fan energy performance of a constant air volume exhaust system. Two single stack energy efficient exhaust fan systems (E3S3F) are presented. The E3S3F-I has the static pressure sensor ...
    • An Integrated Air Handling Unit System for Large Commercial Buildings 

      Song, L.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
      This paper presents an integrated air handling unit system (OAHU) for large commercial buildings. The system introduces outside air into the interior section and circulates the return air to the exterior section. Detailed ...