To study the effect of different parameters on the thermal performance of ground-air heat exchanger system: In situ measurement

2020 ◽  
Vol 146 ◽  
pp. 2070-2083 ◽  
Author(s):  
Kamal Kumar Agrawal ◽  
Rohit Misra ◽  
Ghanshyam Das Agrawal
Keyword(s):  
Heat Exchanger ◽  
Thermal Performance ◽  
In Situ Measurement

Effect of soil moisture contents on thermal performance of earth-air-pipe heat exchanger for winter heating in arid climate: In situ measurement

Geothermics ◽  
2019 ◽  
Vol 77 ◽  
pp. 12-23 ◽  
Author(s):  
Kamal Kumar Agrawal ◽  
Tejpal Yadav ◽  
Rohit Misra ◽  
Ghanshyam Das Agrawal
Keyword(s):  
Soil Moisture ◽  
Heat Exchanger ◽  
Thermal Performance ◽  
In Situ Measurement ◽  
Arid Climate ◽  
Moisture Contents ◽  
Pipe Heat

First in situ determination of the thermal performance of a U-pipe borehole heat exchanger, in Cyprus

2008 ◽  
Vol 28 (2-3) ◽  
pp. 157-163 ◽  
Author(s):  
Georgios Florides ◽  
Soteris Kalogirou
Keyword(s):  
Heat Exchanger ◽  
Thermal Performance ◽  
Borehole Heat Exchanger

scholarly journals IN-SITU MEASUREMENT OF WALL THERMAL PERFORMANCE: DATAINTERPRETATION AND APPARATUS DESIGN RECOMMENDATIONS

1984 ◽  
Author(s):  
M.P. Modera ◽  
M.H. Sherman ◽  
S.G. de Vinuesa
Keyword(s):  
Thermal Performance ◽  
In Situ Measurement ◽  
Design Recommendations ◽  
Apparatus Design

scholarly journals The study of in-situ measurement method for wall thermal performance diagnosis of existing apartment

KIEAE Journal ◽  
2016 ◽  
Vol 16 (4) ◽  
pp. 71-77 ◽  
Author(s):  
Seohoon Kim ◽  
Jonghun Kim ◽  
Seunghwan Yoo ◽  
Hakgeun Jeong ◽  
Kyoodong Song
Keyword(s):  
Thermal Performance ◽  
Measurement Method ◽  
In Situ Measurement ◽  
Performance Diagnosis

Maximum Temperatures of Roof Tiles during the Summer Period

2014 ◽  
Vol 1041 ◽  
pp. 303-306
Author(s):  
Sylvia Svobodová ◽  
Libor Matějka
Keyword(s):  
Numerical Calculation ◽  
Solar Radiation ◽  
Thermal Performance ◽  
In Situ Measurement ◽  
Summer Period ◽  
Roof Material ◽  
Roof Structure ◽  
Material Characteristics ◽  
Maximum Temperatures

Solar radiation is the main source of heat gains during the summer period. The most exposed non-translucent structure of the building is the roof. Material characteristics of roof tiles are able to influence the upper surface temperature and also the thermal performance of the whole roof structure. The aim of this article is comparison of the highest temperatures of roofing tiles reached by a summer day in accordance to their material characteristics. Data obtained from an in-situ measurement are compared with the values obtained by numerical calculation. The temperatures obtained by in-situ measurement are higher than thus earned by numerical calculation.

Experimental Investigation on Thermal Performance of Gas-to-Gas Micro Heat Exchanger With Three Flow Arrangements

2013 ◽  
Author(s):  
Yahui Yang ◽  
Juergen J. Brandner ◽  
Gian Luca Morini
Keyword(s):  
Heat Exchanger ◽  
Thermal Performance ◽  
Cross Flow ◽  
Experimental Tests ◽  
Experimental Results ◽  
Cocurrent Flow ◽  
Micro Heat Exchanger ◽  
Mass Flow Rates ◽  
Parallel Microchannels

In this paper a double-layered microchannel gas-to-gas heat exchanger has been designed and experimentally investigated. The micro heat exchanger (micro HEX) core is based on 133 parallel microchannels machined into polished PEEK plate for both hot side and cold side. Each microchannel is 200 μm high, 200 μm wide and 39.8 mm long. The microchannel layers have been designed in order to be able to test the effect on the thermal performances of the micro heat exchanger of partition foils made in different materials and of various thicknesses. In addition, the device allows to test the layers under three different flow arrangements, namely, countercurrent flow, cocurrent flow and cross flow. Customized pressure and temperature sensors are integrated into the microHEX to enable in-situ measurements. Experimental tests have been performed for various mass flow rates of hot and cold currents. The experimental results are compared with the predictions of the classical theory for conventionally sized heat exchangers. The influence of flow arrangements and wall axial conduction on the thermal performance of the micro heat exchanger are analyzed by considering both the theory and the experimental results.

Thermal Performance of a Multi-Channel Heat Exchanger-Reactor

2014 ◽  
Author(s):  
Xiaofeng Guo ◽  
Yilin Fan ◽  
Lingai Luo
Keyword(s):  
Heat Exchanger ◽  
Thermal Performance
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