5ASHRAE. Commercial/institutional ground-sourceheat pump engineering manual [ M], Atlanta :American Society of Heating, Refrigerating and Air-Conditioning Engineers ,1995.
6Gilbreath C S. Hybrid ground-source heat pumpsystems for commercial applications [D]. Alabama :University of Alabama, 1996.
7Kavanaugh S P, Rafferty K. Ground-source heatpumps : design of geothermal systems for commercialand institutional buildings [M]. Atlanta : AmericanSociety of Heating, Refrigerating and Air-Conditioning Engineers ,1997.
8Kavanaugh S P. A design method for hybrid ground-source heat pumps[G]//ASHRAE Trans, 1998,104(2):691-698.
9Singh J B,Foster G. Advantages of using the hybridgeothermal option [ C ] // The Second StocktonInternational Geothermal Conference, The RichardStockton College of New Jersey, 1998.
10Yavuzturk C,Spitler J D. Comparative study ofoperating and control strategies for hybrid ground-source heat pump systems using a short time stepsimulation model[G] // ASHRAE Trans, 2000, 106(2):192-209.