PDF
Full
Outline
In order to solve the problem of deterioration of heat transfer performance caused by cold air backflow and the excessive unevenness of the headon wind speed on the outdoor side heat exchanger during the heating operation of common air source heat pumps, a new integrated solar and air energy heat pump for public buildings is proposed by combining solar heat gain in the outdoor side heat exchanger. The mathematical model of the outdoor side heat exchanger was established to study the airflow distribution and heat transfer performance of the common air source heat pump, and the simulation results were verified by experiment to prove the accuracy of the mathematical model; two new outdoor side heat exchanger structures of singleinversion type and doubleinversion type are proposed, and their airflow distribution and heat transfer performance are studied. The results show that both singleinversion and doubleinversion structures can improve the unevenness of the headon wind speed of the heat exchanger, among which the doubleinversion structure has a more obvious improvement effect, with the unevenness of the headon wind speed of the outer and inner heat exchangers reduced by 46% and 83%, respectively, compared with that of the common air source heat pump outdoor side heat exchanger; In the case of the same heat exchanger area, fan type and number, the doubleinversion structure increase the heat exchanger by 5.4% compared with the singleinversion structure.
PDF
274
139
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
