ABSTRACT The HEMS system has been gaining global attention due to its huge potential for home application in conserving energy. It is the goal of this research to study to analyze: 1. The Intelligent Operational Strategies under local Weather Conditions 2. Full-scale Experimental Investigation of the HEMS system, including the HVAC and Lighting Controls 3. Energy Savings Effect of each HEMS strategy developed and its Economic Feasibility The experimental result indicated that the HEMS system can be established efficiently in applying: For Air-conditioning Systems: Intermittent Ac PMV-assisted AC Mode DSM-controlled AC mode Predictive Control AC Mode Free-cooling Mode, and For Lighting Systems : Lighting on Demand Mode Task Lighting Sequential Control Lighting Daylighting Humane-sensored Lighting The experimental result indicated that over 30% energy savings can be experienced with huge potential for wide engineering applications.

Keywords: EAC, full-scale experimental Validation, ABRI Lab, VRV The VRV air-conditioning system has been gaining overwhelming popularity in recent years due to its superb merits such as high energy efficiency, lower power consumption, low noise and increasing thermal comfort. During last phase of study, computer simulation using the DOE 2.1 as a tool has been performed systematically to establish a calculation equation for the EAC for Green Building Evaluation Indexes, in replacing the currently adapted fixed constant of 0.8. It is the goal of this year¡¦s project to further validate this equation by conducting a series of full-scale experiments at the ABRI Tainan Laboratory. The experimental result will be organized as a model to revise the equations established during last phase of study with good accuracy. Various different VRV systems which were commercially available on the local air-conditioning market will be adapted so that comparative study can be performed among them. The IPLV curves, which are the essential performance curve of each specific VRV system will then be obtained under local weather conditions. It is expected that through the execution of this project, the calculation equation of the VRV system to be adapted in the Green Building EAC evaluation index will be finalized and validated by the full-scale experiments. The test facilities established during this phase of study will then become the most suitable location of similar tests when building energy conservation is concerned.

Due to lacking of natural resources, the major energy utilized in Taiwan are mostly imported, including oil (50.9%), Coal (32.3%), and natural gas (8.1%), nuclear (7.3%) and hydraulic power (1.4%). Therefore, energy saving strategies have become a global trend and needs immediate action so that CO2 emission can be reduced. To coup with the Kyoto protocol, building energy conservation has been deemed as a policy of no regret and aiming at 20% savings in the whole nation. In this research, building energy conservation strategies, especially on HVAC systems which have been widely adapted in Taiwan will be analyzed and validated with full-scale experimental results. Efforts will be especially focused on commercial and residential buildings, so that their energy savings effect can be analyzed quantitatively.

When central HVAC systems are under commercial operation, all operational parameters, including chilled water supply temperature, return water temperature, chilled water flow rate, and power consumption as the key factors in affecting system energy efficiency.However, in Taiwan there is still lacking of the regression equations of chillers under local weather conditions, and has to rely on manual operation based on experiences. This is also the major short-comings in implementing TAB, and is the best way to renovate the green buildings to make them more intelligent. In this study, theoretical analysis and experimental investigation will be applied simultaneously. In selecting cases from the BeeUp program, actual operational data including COP can be fitted into experimental model to facilitate TAB engineering via BEMS system, in achieving system efficiency. Through the execution of this project, it is identified that the exhibition buildings with 10 hours cooling load, can achieve 7% energy savings. The good result obtained in this project , including the thermal energy storage HVAC system and the heat pump system can be widely adapted to obtain significant energy conservation effect.