Experimental validation of the simulation module of the water-cooled variable refrigerant flow system under cooling operation

On the basis of EnergyPlus's codes, the catalogue and performance parameters from some related companies, a special simulation module for variable refrigerant flow system with a water-cooled condenser (water-cooled VRF) was developed and embedded in the software of EnergyPlus, the building energy simulation program. To evaluate the energy performance of the system and the accuracy of the simulation module, the measurement of the water-cooled VRF is built in Dalian, China. After simulation and comparison, some conclusions can be drawn. The mean of the absolute value of the daily error in the 9Â days is 11.3% for cooling capacity while the one for compressor power is 15.7%. At the same time, the accuracy of the power simulation strongly depends on the accuracy of the cooling capacity simulation.

[1]  Ruzhu Wang,et al.  Energy simulation in the variable refrigerant flow air-conditioning system under cooling conditions , 2007 .

[2]  Ma Zui-liang.  Water Loop VRF Air Conditioning System and Its Project Application , 2006 .

[3]  Fernanda Leite,et al.  An applied artificial intelligence approach towards assessing building performance simulation tools , 2008 .

[4]  Mohammad S. Al-Homoud,et al.  Computer-aided building energy analysis techniques , 2001 .

[5]  Theodore F. Smith,et al.  Evaluation of HVAC system operational strategies for commercial buildings , 1997 .

[6]  Saffa Riffat,et al.  VALIDATION AND PARAMETRIC ANALYSIS OF ENERGYPLUS: AIR FLOW NETWORK MODEL USING CONTAM , 2008 .

[7]  Sumio Shiochi,et al.  Modeling and energy simulation of the variable refrigerant flow air conditioning system with water-cooled condenser under cooling conditions , 2009 .

[8]  M. Zaheer-uddin,et al.  Dynamic simulation of energy management control functions for HVAC systems in buildings , 2006 .

[9]  O. García-Valladares,et al.  Numerical simulation and experimental validation of a helical double-pipe vertical condenser , 2011 .

[10]  Gregory M. Maxwell,et al.  An empirical validation of the daylighting algorithms and associated interactions in building energy simulation programs using various shading devices and windows , 2007 .

[11]  Daniel E. Fisher,et al.  EnergyPlus: creating a new-generation building energy simulation program , 2001 .

[12]  Jeffrey D. Spitler,et al.  Simulation of hybrid ground-coupled heat pump with domestic hot water heating systems using HVACSIM+ , 2008 .

[13]  B. T. Griffith,et al.  Photovoltaic and Solar Thermal Modeling with the EnergyPlus Calculation Engine: Preprint , 2004 .

[14]  Elizabeth Kossecka,et al.  Multi-dimensional heat transfer through complex building envelope assemblies in hourly energy simulation programs , 2002 .

[15]  S. C. Sekhar,et al.  Indoor air quality and energy issues of refrigerant modulating air-conditioning systems in the tropics , 2003 .

[16]  Ruzhu Wang,et al.  Simulation and experimental validation of the variable-refrigerant-volume (VRV) air-conditioning system in EnergyPlus , 2008 .

[17]  Hongxing Yang,et al.  Vertical-borehole ground-coupled heat pumps: A review of models and systems , 2010 .

[18]  R. Sullivan,et al.  Validation studies of the DOE-2 Building Energy Simulation Program. Final Report , 1998 .