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Casing treatment for an industrial axial flow fanHill, S. D. January 1998 (has links)
No description available.
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202 |
Intermittently operated chemical heat pump : Slurried absorption systems and an investigation into the performance characteristics of methanolated potassium hydroxide in powdered form using methanol as the working fluidMaghera-Entwistle, R. I. January 1986 (has links)
No description available.
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Intermittent warm air heating of roomsSidaway, C. S. January 1980 (has links)
No description available.
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204 |
Recess vane passive stall control for axial flow fansBasharhagh, M. Zia January 1992 (has links)
No description available.
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Magnetohydrodynamics of channel induction furnacesMoros, A. January 1986 (has links)
No description available.
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Modeling the air change rate in a naturally ventilated historical church : MultipleLinear Regression analysisGoicoechea, Saioa, López, Patricia January 2012 (has links)
In this thesis the air infiltration through the envelope of a naturally ventilated stone church located in Bergby (Gävle, Sweden) is studied. The project is focused on Multiple Linear Regression (MLR) modeling the air change rate (ACH) inside the church hall and studying the factors (stack effect and wind effect) that influence the air infiltration. The weather parameters outside the building were recorded in a weather station and the properties of the air inside the church was analyzed with different methods. Infrared thermography techniques and thermistors were used to measure the temperature inside, the tracer gas method to measure the ACH and the blower door technique to measure the tightness of the building envelope. In order to know the pressure coefficients on the church envelope a physical model of the building was studied in a wind tunnel. Firstly, only the values obtained from the weather station were used to calculate the predictors of ACH and see which parameter influence more on its variation: temperature difference (∆T) indicating the stack effect; and wind speed (WS), the component of wind speed perpendicular to the long-side facades of the church (WS90) and their square values (WS2 and WS902) indicating the wind effect. The data obtained in the wind tunnel were later used to do the MLR study with new predictors for indicating wind effect (∆Cp∙WS, ∆Cp∙WS2, ∆CpOUT-IN·A∙WS, ∆CpOUT-IN·A∙WS2, ∆CpC-H∙WS, ∆CpC-H∙WS2). Better prediction of ACH was obtained with the square of the wind speed (WS2) instead of the magnitude itself (WS). However, the latter (WS) provided better results than the regression with the magnitude of the perpendicular component of the wind (WS90). Although wind speed influences in ACH, it alone seems to be a very poor predictor of ACH since has a negative correlation with ΔT when the data under study include both day and night. However when high wind speed are detected it has quite strong influence. The most significant predictions of ACR were attained with the combined predictors ∆T & WS and ∆T & ∆CpOUT-IN·A∙WS2. The main conclusion taken from the MLR analysis is that the stack effect is the most significant factor influencing the ACH inside the church hall. This leads to suggest that an effective way of reducing ACH could be sealing the floor and ceiling of the church because from those areas the air infiltration has big influence on the ACH inside the church hall, and more in this case that have been noted that the floor is very leaky. Although different assumptions have been done during the analyses that contribute to make the predictions deviate from reality, at the end it would be possible to asses that MLR can be a useful tool for analyzing the relative importance of the driving forces for ACR in churches and similar buildings, as long as the included predictors not are too mutually correlated, and that attained models that are statistically significant also are physically realistic. / Church project
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THE INFLUENCE OF WAVELENGTH SELECTIVE GREENHOUSE FILMS ON ENERGY CONSUMPTION AND PRODUCTION OF FLORICULTURAL CROPS.Anouti, Abdel Rahman Jamil. January 1985 (has links)
No description available.
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208 |
Experimental and theoretical investigation of the behaviour and heat energy distribution in a diffusion-absorption refrigeratorMakiya, G. A. A. S. January 1983 (has links)
No description available.
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209 |
Temperature and heat load distributions of a rotating heat pipeAl-Baharna, N. S. January 1979 (has links)
No description available.
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210 |
The experimental evaluation of a ternary mixture as an alternative to R22 in the vapour compression refrigeration cycleMongey, Brian January 1996 (has links)
No description available.
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