Domestic hot water system combining solar and waste heat from thermoelectric air-conditioner
Domestic hot water system combining solar and waste heat from thermoelectric air-conditioner
复制标题
结合太阳能和热电空调余热的生活热水系统
DOI：
10.1080/01430750.2001.9675383
复制
发表时间：
2001
影响因子：
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通讯作者：
J. Hirunlabh
中科院分区：
文献类型：
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作者：
J. Khedari;S. Maneewan;N. Pratinthong;W. Chimchavee;J. Hirunlabh
本文研究了一种新的混合家用热水系统的性能，该系统将太阳能与热电（TE）空调的废热相结合。为此，使用了30个型号为TEC 1 -12704的TE模块（模块规格：40 × 40 mm，最大工作电压和电流：13.5 VDC和4.4 VDC）。收集器/储存罐的容量为120升。用于冷却的测试室的体积为2.5m3。通过改变热电模块的电压（50、100、150 VDC）、通过TE热交换器的水质量流率和空气速度（分别为10、15 l/min和2.5、5 m/s）来进行研究。结果发现，该系统可以在2小时内将120升加热到50°C。制冷量为176 W。之后，由于从水箱返回并通过TE水/固体热交换器循环的水温升高，冷却能力降低。最后，根据本研究中使用的设计考虑，运行热水生产和冷却的最佳条件是：100 VDC，水流量为15 l/min，空气流速为2.5 m/s。混合动力系统的相应最高性能系数约为3.12。
SYNOPSIS This paper investigates the performance of a new hybrid domestic hot water system that combines solar energy with waste heat from a thermoelectric (TE) air-conditioner. To this end, 30 TE modules model no. TEC1-12704 (module specifications: 40 × 40 mm, maximum operating voltage and current: 13.5 VDC and 4.4 Amp) were used. The collector/storage tank capacity was 120 litres. The volume of the testing room for cooling was 2.5 m3. Investigations were undertaken by varying the voltage to the thermoelectric module (50, 100, 150 VDC), water mass flow rate and air velocity passing through the TE heat exchangers: 10, 15 l/min and 2.5, 5 m/s, respectively. It was found that this system can heat up the 120 litres to 50°C within 2 hours. The cooling capacity was 176 W. After that, the cooling capacity decreased as a result of the increase of water temperature returned from the tank and circulated through TE water/solid heat exchanger. Finally, under design consideration used in this study, the optimum conditions for operating the hot water production and cooling as well are: 100 VDC, water flow rate of 15 l/min and air velocity at 2.5 m/s. The corresponding highest coefficient of performance of the hybrid system is about 3.12.