| Capillary radiant heating system, is a new type of low temperature hot water radiant heating way, with a comfortable, health, environmental protection, high efficiency and low energy consumption, low grade available energy and heat pump, and many other advantages. So from the comfort and energy considerations of system, capillary radiant heating system has a great application potential. At present, the capillary radinat heating research focused on the thermal characteristics、internal heat transfer and thermal comfort, etc. To promote the promotion and application of the capillary radiant heating system, this article adopts the method of theoretical analysis and experimental research, analyzing the characteristic and energy saving of the capillary radiant heating system.First of all, analysis the load characteristics of capillary radiant heating system,and analyze the heat release,get the heat calculation model.Secondly, analyze the energy consumption of capillary radiant heating system. The heating and the energy efficiency ratio of the system are the main factors affecting energy consumption.Capillary compared with fan coil units, the system can save heat consumption.Capillary can use hot water heating in low temperature, it can improve the heat pump units COP, so the capillary more efficient than fan coil units.Then, through the experimental to study of capillary radiant heating. Analysis the basic characteristics of the capillary radiant heating; comparing the calculated values and measured values to verify the exactness of the heat dissipation model selection and test data; Analysis found that 35 ℃ water, cannot reach 5 ℃ for the backwater temperature difference design, leading to insufficient heating ability.Then, experimental study on heating fan coil. The indoor temperature distribution and heat consumptionof fan coil and capillary network were compared. Comparison found that the indoor temperature distribution of capillary radiant heating is more uniform. There is no loss of heat consumption, under the same comfort, capillary radiant heating more saving heat consumption.The establishment of a heat pump unit efficiency model, and has carried on the experimental study of energy efficiency. Obtain the heat pump units of energy efficiency calculation formula, and verify the correctness of the the heat pump units ‘s energy efficiency model. At the same time, also has carried on the experimental study of energy efficiency of air source heat pump unit. Obtain the formula of the energy efficiency of air source heat pump unit.Finally, according to the results of the theoretical and experimental analysis. A building in chongqing as the research object, will the “capillary + soil source heat pump” heating system, and "fan coil + soil source heat pump” heating system, the “capillary + air source heat pump” heating system in winter running energy consumption comparison, it is concluded that three kinds of heating system, the “capillary + soil source heat pump” heating system is more energy conservation and more environmental protection. |
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