A MATHEMATICAL MODEL OF HEAT AND MOISTURE EXCHANGE IN THE RESPIRATORY TRACT OF A HUMAN (MODEL BUILDING)

2018 ◽  
Author(s):  
Николай Ульянычев ◽  
Nikolay Ulyanychev ◽  
Вера Ульянычева ◽  
Vera Ul'yanycheva
Keyword(s):  
Mathematical Model ◽  
Respiratory Tract ◽  
Model Building ◽  
Human Model ◽  
Moisture Exchange ◽  
Heat And Moisture

scholarly journals Airway Heat and Humidity during Endotracheal Intubation: I. Inspiration of Arid Gases via a Non-Rebreathing Circuit

1973 ◽  
Vol 1 (3) ◽  
pp. 211-214 ◽  
Author(s):  
Colin Shanks ◽  
Charles Sara
Keyword(s):  
Respiratory Tract ◽  
General Anaesthesia ◽  
Endotracheal Intubation ◽  
Major Part ◽  
Clinical Results ◽  
Moisture Exchange ◽  
Model Lung ◽  
Heat And Moisture

Investigation into the patterns of respiratory heat and moisture exchange in intubated patients, under general anaesthesia, is detailed. This paper gives the inspiratory and expiratory temperatures and humidities found in a non-rebreathing circuit near the valve and near the trachea. A model lung was constructed to control and determine factors which have been implicated in playing a major part in heat and moisture homeostasis within the respiratory tract. Laboratory and clinical results are compared.

Control and Optimized Management of Grain Drying in Forced-Aerated Bins

2019 ◽  
pp. 199-229
Author(s):  
Alexey Nicolaevich Vasiliev ◽  
Alexey Alexeevich Vasiliev ◽  
Dmitry Budnikov ◽  
Dmitry Tikhomirov ◽  
Asan Bekeshovich Ospanov
Keyword(s):  
Mathematical Model ◽  
Ambient Air ◽  
Central Cylinder ◽  
Informational Entropy ◽  
Drying Process ◽  
Moisture Exchange ◽  
Physical Description ◽  
Grain Drying ◽  
Analytic Expression ◽  
Heat And Moisture

In the chapter, both informational and system-based approaches have been applied to the analysis of grain drying process as an interaction of two systems, namely, “drying agent” and “grain layer.” It made it possible to evaluate the information content of the process. Analytic expression has been obtained for grain layer informational entropy variations which enabled to make the conclusion that an adequate physical description of grain drying process has to include ambient air parameters control, as well as that of drying agent's parameters in its exit out of a grain layer, as well as parameters of both drying agent and grain in one point of grain layer. A mathematical model of heat-and-moisture exchange in dense grain layer has to be applied. As a result of modeling, it has been proved that the sensors of both drying agent and grain parameters have to be located at a distance of 10 to 11 cm from the central cylinder of the forced-aerated drying bin.

Heat and moisture exchange capacity of the upper respiratory tract and the effect of tracheotomy breathing on endotracheal climate

Head & Neck ◽  
2011 ◽  
Vol 33 (1) ◽  
pp. 117-124 ◽  
Author(s):  
Renske J. Scheenstra ◽  
Sara H. Muller ◽  
Andrew Vincent ◽  
Frans J. M. Hilgers
Keyword(s):  
Respiratory Tract ◽  
Exchange Capacity ◽  
Upper Respiratory Tract ◽  
Moisture Exchange ◽  
Upper Respiratory ◽  
Heat And Moisture

Mathematical Models of Papermaking

2001 ◽  
Vol 6 (1) ◽  
pp. 9-19 ◽  
Author(s):  
A. Buikis ◽  
J. Cepitis ◽  
H. Kalis ◽  
A. Reinfelds ◽  
A. Ancitis ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Initial Value Problems ◽  
Moisture Transfer ◽  
Bound Water ◽  
Drying Process ◽  
Initial Value ◽  
First Order ◽  
Heat And Moisture ◽  
The Mathematical Model ◽  
The Web

The mathematical model of wood drying based on detailed transport phenomena considering both heat and moisture transfer have been offered in article. The adjustment of this model to the drying process of papermaking is carried out for the range of moisture content corresponding to the period of drying in which vapour movement and bound water diffusion in the web are possible. By averaging as the desired models are obtained sequence of the initial value problems for systems of two nonlinear first order ordinary differential equations. 

scholarly journals Heat and Moisture Transport in Multi-Layer Walls: Interaction and Heat Loss at Varying Outdoor Temperatures / Siltuma Un Mitruma Pārnese Caur Daudzslāņainām Būvkonstrukcijām: Āra Temperatūras Izmaiņu Ietekme Uz Siltuma Zudumiem Iekštelpā

2012 ◽  
Vol 49 (6-I) ◽  
pp. 32-43 ◽  
Author(s):  
A. Ozolinsh ◽  
A. Jakovich
Keyword(s):  
Mathematical Model ◽  
Energy Efficiency ◽  
Moisture Transport ◽  
Heat Losses ◽  
Condensate Formation ◽  
Heat And Moisture Transport ◽  
U Value ◽  
Technical Solutions ◽  
Heat And Moisture ◽  
Humidity Profiles

Abstract The heat and moisture transport in multi-layer walls is analysed for five building units. Using the developed program, a typical of Latvian conditions temperature and relative humidity profiles in multi-layered constructions has been obtained and the indoor heat losses estimated. Consideration is also given to the risk of condensate formation and to the influence of moisture on the U-value. The created mathematical model allows forecasting the energy efficiency and sustainability of different technical solutions as refer to the heat and moisture transport in buildings.

scholarly journals Determining the effective drop size when modeling heat and moisture exchange in the spray chamber

2019 ◽  
Vol 1382 ◽  
pp. 012081
Author(s):  
A Ch Zandaraev ◽  
R Sh Mansurov ◽  
T A Rafalskaya ◽  
N N Fedorova
Keyword(s):  
Drop Size ◽  
Spray Chamber ◽  
Moisture Exchange ◽  
Heat And Moisture
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