Simpson Qiu-gram: Summary of energy saving heat pump tower - ground source heat pump, energy - heat pump industry

Simpson Qiu-gram: Summary of energy saving heat pump tower - ground source heat pump

, energy - heat pump industry

Tower heat pump energy-saving environmental review of renewable energy

Economic development and improvement of living standards brought about the prosperity of the building industry, these industries to build more buildings in densely populated areas, buildings are equipped with facilities for air conditioning, domestic hot water energy structure is selected economic rationality, is directly related to the industry after the economic operation and environmental protection, while in the continuous development of such energy saving does not take effective measures not only increase the operating costs directly or indirectly, on the ecological environment of the secondary pollution.

Our buildings rely mainly on fossil fuel energy structure, sulfur dioxide (SO2) for the combustion of fossil fuels after the resultant sulfur, the human body after inhalation of SO2 with cough and breathing difficulty. SO2 is also easy to combine with atmospheric water vapor generated sulfite formation of smog to acid rain, soil and water acidification. And rising fossil fuel prices result in increased operating costs for businesses, the burning of fossil fuels, environmental problems arising from the secondary is increasingly the focus of world attention.

Particularly in the service sector buildings air conditioning, hot water equipment and facilities, the scope of its energy consumption can be accounted for in this industry for 30 ~ 55%. Energy level and the initial selection of cold (hot) source is directly related to whether the source of cheap, energy-saving and environmental protection are challenging our traditional environmental pollution caused by fossil fuel heating. Therefore, the search for inexpensive low-grade renewable cold (hot) source heat pump energy consumption is to reduce the cost of key measures, low-grade renewable heat pump cold (hot) source from a number of types, the kind of cold (hot) most applicable to the most economical source , but also from the regional geological and climatic conditions on the heat pump cold light of local conditions (heat) source to optimize the contrast sources.

According to geological conditions south of a narrow scope of application of ground source heat pump

More than 80% complete regional strata exposed, granite widely distributed, complex geological structure, building platform and building more densely populated areas in the valley, take to the source (groundwater, surface water, soil) as a heat source heat pump very narrow, even with available sources of soil buried the cost of its high cost, the summer cooling water temperature higher than the evaporative cooling water temperature is not economic. Therefore, in the south to the source of cold (hot) source was only 60 days in winter with energy-saving advantages, only 20% of the scope of application.

Under the climate conditions in the south band of low air-cooled heat pump efficiency

Summer heat, the absolute maximum temperature up to above 40 ; the traditional air-cooled heat pump is to rely on hot air through the narrow fin heat exchanger (to ensure that the summer heat dissipation must be narrow fin) cooling heat dissipation by hot temperature the impact of energy efficiency ratio of air (EER) is low, generally only about 2.5, the peak air conditioning load can only achieve 30% of heat recovery for domestic hot water.

Winter cold and wet, cold and warm air by the confrontation of North and South, with nearly 800 hours of temperatures mostly between -5 ~ 6 , low temperature, rain Uninterrupted, the average humidity is 85%, and latent heat (wet case of condensation frosting the air) source low-grade heat can be harmful, resulting in heat exchanger frosting, blocking air flow loss of performance and result in frequent defrosting heat pump does not work, heating coefficient of performance (COP) fell only 1.5 or so, followed supplemented by high quality electric source high energy consumption as an auxiliary heat source, can not adapt to low temperature and humid climatic conditions in normal operation. Air Source Heat Pump is designed mainly narrow fin summer, summer and winter can not be fixed and the same efficiency. As the cost and other reasons, the ambient temperature and the chiller refrigerant evaporation temperature difference over t = 10-12 . Particularly through the winter for low back downstream into the efficiency of heat transfer, throttling refrigerant cooling tube after the narrow channel fin in the first frost to meet with humid air, blocking the air circulation heat exchanger to form a gate frost and block the vicious cycle of t = 15-20 .

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