|Table of Contents|

Analysis on Test of Wall Temperature Distribution and Heat Flux in Solar Greenhouse(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年10
Page:
58-61
Research Field:
Publishing date:

Info

Title:
Analysis on Test of Wall Temperature Distribution and Heat Flux in Solar Greenhouse
Author(s):
HE Fen1; 2; ZHOU Chang-ji1; 2
(1.Chinese Academy of Agricultural Engineering，Beijing 100125；2.Key Laboratory of Farm Building in Structure and Construction，Ministry of Agriculture，Beijing 100125)
Keywords:
solar greenhouse; wall temperature; heat flux
PACS:
S 625.1
DOI:
10.11937/bfyy.201510013
Abstract:
Taking typical solar greenhouse of Xining as object，the temperature distribution and heat flux of trapeziform soil wall in the typical solar greenhouse of Xining were inspected and analyzed in the coldest time of winter，to grasp wall temperature change trend and the characteristic of its heat absorption and release.The results showed that the wall temperature in vertical direction changed little；in horizontal direction，the temperature of wall inside fluctuated greatly，and the day change extent reached 26.07℃ under the sunny day，and after two cloudy days，the day change extent reached 8.6℃ to 11.6℃.The inside of wall absorbed heat reached 687.84 W/m2 in sunny，while after one and two cloudy days，the heat released with 640.59 W/m2 and 1 106.99 W/m2.The outside of wall always released the heat in any typical weather，which were 984.7 W/m2，1 785.13 W/m2，1 866.55 W/m2 respectively.In summary，the study is both significant for evaluating the wall heat reservation and heat transfer model.

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Last Update: 2015-08-06