关于风冷式建筑一体化光伏光热组件在夏季性能的研究风冷式建筑一体化光伏光

On air-cooled components of BIPV solar thermal performance studies in the summer <br><br>air-cooled BIPV solar thermal (BIPV / T) assembly is a micro plate by heat pipe array and the cadmium telluride solar photovoltaic module, is combined, air circulating cooling forms thereof are employed. The assembly is applied to the building wall and the air-cooled system is designed so that light is photoelectrically heat transfer performance and test the assembly. <br><br>Experimental results show that the average outdoor temperature is 38.2 deg.] C, the level of solar radiation intensity under 789 W / m2 of, BIPV / T is the average temperature of the backplane assembly 44.7 deg.] C, the maximum instantaneous photoelectric efficiency reached 5.74%, daily average photoelectric efficiency of 4.52%, an average thermal efficiency of 48.02% of light, the average total efficiency was 52.54%, the total amount of the power generation assembly 0.74 kWh, heat for the aggregate 28.33 MJ. <br><br>Application of the Heat Flow Meter Test BIPV / T component heat transfer performance, in the presence, no mechanical ventilation, the heat transfer coefficient were 0.124 and 0.281 W / (m2 · K) , and in the mechanical ventilation, the average temperature of the backplane assembly value decreased 12.8 ℃. <br><br>With different wall assembly is disposed on the south side, the building model was established to simulate building thermal environment, results show BIPV / T BIPV component assembly as compared to the total annual cooling load is reduced 4.80%, when the cooling load is reduced by the maximum 13.35%; compared with conventional energy efficiency standards envelope, the reduction in thickness 148 mm. <br>Keywords: air-cooled; building integrated; photothermal optical properties; heat transfer performance; cooling load

Study on the summer performance of integrated photovoltaic photothermal modules in air-cooled buildings<br><br>Air-cooled building integrated photovoltaic photothermal (BIPV/T) components are formed by a flat-panel microthermal tube array combined with cadmium carbide solar photovoltaic modules, the form of air circulation cooling is used. The component is applied to building walls and the air-cooled system is designed to test the component's photoelectric and thermal properties.<br><br>The experimental test results show that the average temperature of the BIPV/T component backplate is 44.7 degrees C and the maximum instantaneous photoelectric efficiency is 5.74. , the average photoelectric efficiency of the whole day is 4.52%, the average photothermal efficiency is 48.02%, the average total utilization efficiency is 52.54%, the total assembly power generation is 0.74 kWh, the total heat collection is 28.33 MJ.<br><br>The heat transfer performance of BIPV/T components was tested by the thermal flow meter, and under the conditionof sand and no mechanical ventilation, the heat transfer coefficient was 0.124 and 0.281 W/(m2. K), and under mechanical ventilation conditions, the average temperature of the component backplane is reduced by 12.8 degrees C.<br><br>With the establishment of different south side wall components, building models are established to simulate the building thermal environment, the results show that the BIPV/T components compared with BIPV components, the total cold load decreased by 4.80%, the maximum time-by-time cold load decreased by 13.35%, compared with the conventional energy-saving standard enclosure structure, the thickness was reduced by 148 mm.<br>Keywords: air-cooled; Building integration; photothermal photoelectric performance; heat transfer performance; cold load

Study on the performance of air-cooled building integrated photovoltaic solar thermal module in summer<br>The BIPV / T module of air-cooled building integration is composed of flat plate micro heat pipe array and CdTe solar photovoltaic module, and the form of air circulation cooling is adopted. The module is applied to the building wall and the air-cooled system is designed to test the photoelectric, photothermal and heat transfer performance of the module.<br>The experimental results show that the average temperature of the back plate of BIPV / T module is 44.7 ℃, the maximum instantaneous photoelectric efficiency is 5.74%, the average all day photoelectric efficiency is 4.52%, the average photothermal efficiency is 48.02%, the average total utilization efficiency is 52.54%, and the total power generation of the module is 0.74 kwh, The total heat collection is 28.33 MJ.<br>The heat transfer performance of BIPV / T module was measured by heat flow meter. The heat transfer coefficients were 0.124 and 0.281 w / (M2 · K) with and without mechanical ventilation, respectively, while the average temperature of back plate of module decreased by 12.8 ℃ under mechanical ventilation.<br>With the different south wall components being set up, the building model is established to simulate the thermal environment of the building. The results show that the total cooling load of BIPV / T module is reduced by 4.80% and the hourly maximum cooling load is reduced by 13.35% compared with BIPV module. Compared with the conventional energy-saving standard building envelope, the thickness is reduced by 148 mm.<br>Key words: air-cooled; building integration; photothermal photoelectric performance; heat transfer performance; cooling load