Experimental study on thermo‐hydraulic performance of nanofluids upward flowing through helical tubes of heat exchanger system based on thermal efficiency

2019 ◽  
Vol 14 (4) ◽  
Author(s):  
Cong Qi ◽  
Xinfeng Zhai ◽  
Maoni Liu ◽  
Keao Li ◽  
Fan Fan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Exchanger ◽  
Thermal Efficiency ◽  
Hydraulic Performance ◽  
Helical Tubes

scholarly journals Numerical and Experimental Study of the Thermal Efficiency of an Air-Soil Heat Exchanger in the Sahelian Zone

2021 ◽  
pp. 8-16
Author(s):  
Boureima Kaboré ◽  
Germain Wende Pouiré Ouedraogo ◽  
Adama Ouedraogo ◽  
Sié Kam ◽  
Dieudonné Joseph Bathiebo
Keyword(s):  
Experimental Study ◽  
Heat Exchanger ◽  
Thermal Efficiency ◽  
Heat Exchangers ◽  
Air Conditioning ◽  
Electrical Energy ◽  
Tube Length ◽  
Air Velocity ◽  
June July ◽  
Sahelian Zone

In the Sahelian zone, air conditioning in house by air-soil heat exchangers is an alternative in the context of insufficient of electrical energy. In this work, we carried out a numerical and experimental study of thermal efficiency of an air-soil heat exchanger. This study provided an estimation of thermal efficiency of an experimental air-soil heat exchanger during June, July and August 2016. Numerical results provided a better understanding of the influence of parameters such as tube length, air velocity and soil temperature on the thermal efficiency of this system.

Performance analysis of domestic solar air heating system using V-shaped baffles – An experimental study

2021 ◽  
pp. 095440892110162
Author(s):  
Vijayakumar Rajendran ◽  
Harichandran Ramasubbu ◽  
Karthick Alagar ◽  
Vignesh Kumar Ramalingam
Keyword(s):  
Experimental Study ◽  
Performance Improvement ◽  
Mass Flow ◽  
Thermal Efficiency ◽  
Heating System ◽  
Solar Air Heater ◽  
Absorber Plate ◽  
Air Heating ◽  
Mass Flow Rates ◽  
Carbon Dioxide Mitigation

An experimental study has been carried out to enhance a solar air heater’s performance by integrating artificial roughness through baffles on the absorber plate. In this paper, the thermal and energy matrices analysis of a Solar Air Heater (SAH) roughened with V up perforated baffles have been investigated. The effect of various mass flow rates on the SAH was analyzed with and without baffles. Experimental outputs like outlet air temperature, useful energy (heat) gain and thermal efficiency were evaluated to confirm the performance improvement. The baffled absorber plate SAH was found to give the maximum thermal efficiency and useful energy gain of 89.3% and 1321.37 W at a mass flow rate of 0.0346 kg/s, 13% and 12% higher than SAH without baffle. This result showed that the V up-shaped ribs in flow arrangement provide better thermal performance than smooth plate SAH for the parameter investigated. Energy matrices analysis and carbon dioxide mitigation of the SAH system were also analyzed.

Sign in / Sign up

Export Citation Format

Share Document