Open AccessHorizontal earth-air heat exchanger for preheating external air in the mechanical ventilation system
Author(s) -
Vasyl Zhelykh,
Olena Savchenko,
Vadym Matusevych
Publication year - 2018
Publication title -
selected scientific papers
Language(s) - English
Resource type - Journals
eISSN - 1338-7278
pISSN - 1336-9024
DOI - 10.1515/sspjce-2018-0021
Subject(s) - plate fin heat exchanger , plate heat exchanger , shell and tube heat exchanger , heat exchanger , heat spreader , moving bed heat exchanger , copper in heat exchangers , heat transfer , recuperator , micro heat exchanger , heat recovery ventilation , convective heat transfer , heat transfer coefficient , mechanics , mechanical engineering , engineering , physics
To save traditional energy sources in mechanical ventilation systems, it is advisable to use low-energy ground energy for preheating or cooling the outside air. Heat exchange between ground and outside air occurs in ground heat exchangers. Many factors influence the process of heat transfer between air in the heat exchanger and the ground, in particular geological and climatic parameters of the construction site, parameters of the ventilation air in the projected house, physical and geometric parameters of the heat exchanger tube. Part of the parameters when designing a ventilation system with earth-air heat exchangers couldn’t be changed. The one of the factors, the change which directly affects the process of heat transfer between ground and air, is convective heat transfer coefficient from the internal surface of the heat exchanger tube. In this article the designs of a horizontal earthair heat exchanger with heat pipes was proposed. The use of heat pipes in designs of a horizontal heat exchanger allows intensification of the process of heat exchange by turbulence of air flow inside the heat exchanger. Besides this, additionally heat transfer from the ground to the air is carried out at the expense of heat transfer in the heat pipe itself.