Browsing by Author "Liu, M."

Now showing items 1-20 of 90

    • Achieving High Chilled Water Delta T Without Blending Station 
      Wang, Z.; Wang, G.; Xu, K.; Yu, Y.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2007)
      Typically a blending station is designed to ensure that its user is able to avoid low chilled water return temperature in the district cooling system. When the chilled water return temperature drops to a low limit, building ...
    • An Advanced Economizer Controller for Dual Duct Air Handling Systems - with a Case Application 
      Liu, M.; Claridge, D. E. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 1996)
      Heating penalty is expected when economizers are applied to dual-duct air handling systems. The heating penalty can even be higher than the cooling savings when the hot air flow is higher than the cold air flow. To avoid ...
    • Air Handling Unit Supply Air Temperature Optimization During Economizer Cycles 
      Xu, K.; Liu, M.; Wang, G.; Wang, Z. (Texas A&M University (http://www.tamu.edu); Energy Systems Laboratory (http://esl.tamu.edu), 2007)
      Most air handling units (AHUs) in commercial buildings have an air economizer cycle for free cooling under certain outside air conditions. During the economizer cycle, the outside air and return air dampers are modulated ...
    • Application of Innovative Technologies During Continuous Commissioning 
      Joo, I. S.; Liu, M.; Wang, J.; Hansen, K. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2003)
      This paper demonstrates the implementation of new innovative technologies during continuous commissioning practices to improve building operations and reduce energy costs. A 30-year-old typical commercial building with a ...
    • Application Study of the Pump Water Flow Station for Building Energy Consumption Monitoring and Control Optimization 
      Liu, G.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2006)
      This paper presents a new building energy monitoring and pump speed control method. The pump speed is controlled to maintain the system resistance at an optimized value to approach the best pump efficiency and save pump ...
    • Audit of Lone Star Gas Invoices and Billing Procedures, Task #3 
      Turner, W. D.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University, 1997)
      At the request of the TAMU Power Plant, the ESL staff audited the 1995 Lone Star Gas Company invoices. Gas consumption is measured and the measured volume is converted to standard volume (at T=60 °F, P= 14.65 psia) to ...
    • Building Pressure Control in VAV System with Relief Air Fan 
      Pang, X.; Liu, M.; Zheng, B. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2005)
    • Case Study of Continuous Commissioning in an Office Building 
      Pang, X.; Zheng, B.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2006)
      The case study building is a two-story office facility with total floor area of 31000 square feet, of which most is open space office. The HVAC system operates 24 hours a day, 7 days a week. An energy audit was conducted ...
    • CC Retrofits and Optimal Controls for Hot Water Systems 
      Wu, L.; Liu, M.; Wang, G. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2007)
      Boilers account for about 42% of space heating energy consumption in commercial and multifamily buildings in the U.S. Boilers are typically designed to be oversized, with redundant safety factors and without consideration ...
    • CCLEP Retrofit and Innovative Controls to Achieve 56% Energy Savings for a Luxury Shopping Mall 
      Wu, L.; Pang, X.; Liu, M.; Wang, J.; Lewis, T. G. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2007)
      The Continuous Commissioning Leading Project (CCLEP) process is an ongoing process to apply Continuous Commissioning (CC) system optimization theory and advanced technologies in commercial retrofit projects. The CCLEP ...
    • Commissioning of A Large Office Building in Texas - A Case Study 
      Deng, S.; Turner, W. D.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2000)
      This case study involves commissioning of a large office building in the hot and humid climate of south Texas. The commissioning involved the installation of a VFD (Variable Frequency Drive) on a chilled water pump, improved ...
    • Continuous Commissioning of a Central Chilled Water & Hot Water System 
      Deng, S.; Turner, W. D.; Batten, T.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2000)
      A central chilled water / hot water system provides cooling / heating energy from central utility plants to multiple customers (buildings) through campus distribution loops. To effectively transport the chilled water and ...
    • 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 ...
    • Continuous Commissioning® in an Aged Office Building 
      Cui, Y.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2005)
    • Continuous Commissioning® Leading Energy Project Process - An Industry Approach 
      Liu, M.; Wang, J.; Hansen, K.; Seltzer, A. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2005)
    • Continuous Commissioning® of a Single Fan Dual Duct System in an Office Building 
      Dong, D.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2005)
    • Continuous Commissioning® of an Office Building 
      Zheng, B.; Liu, M.; Pang, X.; Wang, J.; Hansen, K. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2005)
    • Decoupled Modeling of Chilled Water Cooling Coils Using a Finite Element Method 
      Wang, G.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2005)
    • Demand-based Optimal Control to Save Energy: A Case-Study in a Medical Center 
      Joo, I. S.; Song, L.; Liu, M.; Carico, M. (Energy Systems Laboratory, 2008-12)
      Continuous Commissioning®1 (CC®) strategies include reducing simultaneous heating and cooling, scheduling the facility’s occupancy needs, utilizing free cooling, and minimizing excessive supply air and outside air. Most ...
    • Development of a Procedure for the Predictive Control Strategy of a Chilled Water Storage System 
      Wei, G.; Sakuri, Y.; Claridge, D. E.; Turner, W. D.; Liu, M. (Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu), 2000)
      Thermal energy storage systems store the thermal energy produced by the chiller plant in periods of off-peak electrical demand or when cheaper electricity is available. The stored thermal energy is then withdrawn from the ...