Ground Source Heat Pump Water Floor Heating Heating Systems

It is understood that a school in Beijing Ground Source Heat Pump Air conditioning Project Field measurements show that the winter run, " Solar Energy + Ground source Heat Pump + Water to warm, "is an ideal heating system worth using.



Project Overview The project a total area of 71,322 square meters planning, including planning of construction land area of 57,332 square meters, total building area of 35,800 square meters, from the primary and secondary school buildings, laboratory building, a small hall, apartment buildings, canteens , stadiums and buildings or building component.



Use ground-source heat of the project Pump System as the end of the energy delivery system for all buildings with hot and cold sources, in addition to sports, teachers and canteen apartments, each building heating only heat source in winter, no summer cold source system. Design of ground source heat pump system provides 7 ~ 12 in summer chilled water in winter to provide 45 ~ 40 air conditioning, heating and hot water.



The project ground source heat pump system cooling design load 5892KW, the project ground source heat pump system thermal design load 2499.84KW.



The project of teaching buildings, student dormitories, hall and gym with water to warm, teachers quarters, canteen with fan coil units, fan coil and the whole stadium heat exchange with air conditioning units.



The project of underground pipe system endothermic heat load in winter about 1875KW, the summer load up excitedly about 707KW.



Winter commissioning the project site measurement and analysis of the situation



1, debugging and running field test



The project on October 25, 2007 start debugging and running, ground stability and circulating water temperature is 13.6 , 11 1 debugging is completed, and began to heat buildings.



Month after commissioning, the system operating status as follows:



2007 5 to 15 December, two hosts to run four hours later, the average ground heat exchanger inlet temperature of about 3 , the average water temperature is around 7 , there's low unit to protect themselves down, then end of the average water temperature around 32 , the average water temperature is 28 , the room temperature can meet the design requirements.



2007 16 to 20 December, two hosts to run 3 hours, the underground heat exchanger average water temperature of about 3 , the average water temperature is 6.5 or so, there's low temperature unit to protect themselves down, then end of the average water temperature of 30 , the average water temperature around 26 , then send the wind fan coil temperature of less than design requirements, low temperature water radiant floor heating part of the room temperature can not reach design requirements.



2007 12 31 debugging found that two hosts could not open normally, and finally by increasing the ground water flow heat exchanger, two heat pumps host can run about 3 hours, underground heat exchanger The average water temperature of about 3 average water temperature of about 6 , for 5 days, units of low-temperature shutdown protection of their own, this time the average water temperature of the end of about 27 , the average water temperature around 23 , the room temperature can not be meet the design requirements.



2008 1 5th, by opening a heat pump, while conditioning off and the floors do not use the room, the supply of sub-periods and functional apartments canteen (noon and evening) and classroom building, buried underground at this time for The average water temperature of heat is about 3.5 , the average water temperature is about 6.7 , the end of the average water temperature around 32 , the average water temperature is 28 , room temperature, the improvement is a good choice for heating.



Baoliao Hotline :020-22374965 Contributors E-mail : hellomily@qq.com Editor: experts



Speed chain activities: Respect and promotion



Heavenly Prize and other vehicles you get to vote



2010 4 07 Day? April 9 International Refrigeration , Air conditioning, Heating , Ventilation and Food Canned buyers group exhibition



2010 5 28 Day? May 29 2010, Guangzhou, China heat pump, solar Fair



CIHE & HVAC2010 China