Last edited by Yozshukree
Sunday, May 3, 2020 | History

3 edition of Three-dimensional modelling of heat transfer from slab floors found in the catalog.

Three-dimensional modelling of heat transfer from slab floors

William P. Bahnfleth

Three-dimensional modelling of heat transfer from slab floors

  • 400 Want to read
  • 1 Currently reading

Published by US Army Corps of Engineers, Construction Engineering Research Laboratory, National Technical Information Service, distributor in Champaign, Ill, [Springfield, VA .
Written in English

    Subjects:
  • Concrete slabs -- Thermal properties.,
  • Heat -- Transmission.

  • Edition Notes

    Other titlesThree dimensional modelling of heat transfer from slab floors.
    Statementby William P. Bahnfleth.
    SeriesUSACERL technical manuscript -- E-89/11., USA-CERL technical manuscript -- E-89/11.
    ContributionsConstruction Engineering Research Laboratory.
    The Physical Object
    FormatMicroform
    Paginationxvi, 196 p.
    Number of Pages196
    ID Numbers
    Open LibraryOL14689132M


Share this book
You might also like
Giless laboratory course in dyeing.

Giless laboratory course in dyeing.

The Prairie Train

The Prairie Train

Old love for new

Old love for new

Training in public administration

Training in public administration

Preparing the Marketing Plan

Preparing the Marketing Plan

Ill Fix You

Ill Fix You

Healthy Spirit In A Healthy Body

Healthy Spirit In A Healthy Body

Trespassers welcome here

Trespassers welcome here

On the role of the teacher.

On the role of the teacher.

Lectures in abstract algebra.

Lectures in abstract algebra.

Housing census report of NWFP and FATA, December 1980.

Housing census report of NWFP and FATA, December 1980.

concentric sphere, and other essays in comparative literature

concentric sphere, and other essays in comparative literature

Chronicle of the Pharaohs

Chronicle of the Pharaohs

Anthropometry of the natives of Arnhem land and the Australian race problem

Anthropometry of the natives of Arnhem land and the Australian race problem

Three-dimensional modelling of heat transfer from slab floors by William P. Bahnfleth Download PDF EPUB FB2

A detailed, hourly three-dimensional finite difference model was used to conduct parametric studies of heat transfer from slab-on-grade floors. Author: William Parry Bahnfleth.

Zhong and Braun developed a 1D approximation method by combining a steady-state heat transfer from the perimeter of the slab to the ambient using slab perimeter heat loss factor and a 1D transient heat transfer into a portion of the soil underneath the slab.

The slab perimeter heat loss factor and the soil depth for two common floor configurations were determined by correlations developed from 2D numerical simulation results for different floor dimensions Cited by: There is Three-dimensional modelling of heat transfer from slab floors book particular lack of three-dimensional foundation heat loss data.

In this study, a detailed three-dimensional finite difference model of a slab floor was used to generate 93 annual simulations in parametric groups focusing on effects of size and shape, soil properties, boundary conditions, climate, insulation, and building : William Parry Bahnfleth.

Comparison Of Three Transient Models For Slab Heating/Cooling Systems Anthony Rey Concordia University, (where the supply fluid temperature is an input of the multi-zone building model).

The heat transfer from Type is a detailed model that performs a three-dimensional energy balance of the embedded-tube radiant floorAuthor: Anthony Rey, Rémi Dumoulin, Andreas Athienitis. Heat Transfer Design Methods Hardcover See all formats and editions Three-dimensional modelling of heat transfer from slab floors book other formats and editions.

Price New from Used from Hardcover "Please retry" — — — Hardcover — The Amazon Book Review Cited by: Title: A transient, three-dimensional, thermal model of a billet reheating furnace: Creator: Scholey, Kenneth Erwin: Date Issued: Description: Situated between the casting and rolling operations, the reheating process ensures steel billets or slabs are at temperatures high enough (~°C) to enable subsequent deformation pro-cesses to be carried Three-dimensional modelling of heat transfer from slab floors book economically.

Three-Dimensional Thermal Modeling of Temperature composes of a m Three-dimensional modelling of heat transfer from slab floors book slab and a m bottom slab, which were connected by two vertical walls of m net height each.

The thickness of the slabs was m, while the The COMSOL finite element model The COMSOL’s heat transfer module with. Shading Wind Ground and surrounding surfaces. Figure 1: The environmental thermal loads The aim of this paper is to focus on the using of the heat transfer module of COMSOL to simulate the concrete box-girder segment with all of the boundary thermal loads and to predict the time-dependent distribution of temperature in concrete bridge girders.

Computer programs for transient and steady-state heat conduction in two and three di- mensions have been developed. The programs are part of a library, developed by Lund Group for Computational Building Physics, dealing with building physics and ground heat. The down side is two heat sources.

All water heaters waste heat energy, even when the burner is Three-dimensional modelling of heat transfer from slab floors book and the unit is sitting idle between heat- ing cycles.

Granted, the unit dedicated to heat - ing the floor only wastes heat during the winter months. But standby losses for six months out of every year can add Size: 2MB. However, the presence of a corner suggests that three-dimensional heat transfer occurs around the intersection of the two exposed edges and the previous result is due to the fact that the two investigated locations are relatively far from the corner (Stacks 1 and 2 are, respectively, and m from the corner).Cited by: Incorporating these phenomena enables the model to simulate heat transfer during the entire continuous casting process.

The heat extraction due to water sprays is a function of water flow[61]of the following form: [22] where is water flux in the spray zones, and is the temperature of the cooling-water spray.

Get this from a library. Three-dimensional modelling of heat transfer from slab floors. [William P Bahnfleth; Construction Engineering Research Laboratory (U.S.: )]. A detailed, hourly three-dimensional finite difference model was used to conduct parametric studies of heat transfer from slab-on-grade floors.

Studies considered effects of geometry, climate, soil properties, and boundary conditions. Framing with Steel Versus Wood/Heat Transfer Issues and Analysis - comparable to that of wood framing.

Not having to account Floor Slab-on-grade, no edge insulation connections to the wall system. Available resources, limited model convective and radiative heat transfer of the air space; between the cold and the warm sides.

The File Size: 78KB. form that can account for below grade wall and floor heat losses within a simple set of algorithms based on steady state heat transfer and plane [email protected] The method can be used to model basements, slab on grade and crawlspace floor types @ A significant improvement in the procedure results from estimating the decrement factors based on.

Study on heat transfer process for in-slab heating floor. In order to improve the accuracy of computational model of the existing heat transfer process for in-slab heating floor, two heat transfer models, the revised composite-fin model and the equivalent heat resistance model, were developed in this paper.

This paper presents a new three-dimensional analytical solution for transient ground-coupled heat transfer associated with slab-on-grade floor building foundations.

The impact of above-grade walls on ground-coupled heat transfer is accounted for in the presented : Moncef Krarti. Zurn Radiant Heating Design and Application Guide Radiant panel heating increases our comfort in many ways. For example, radiant floor heat has more even floor-to-ceiling temperatures than other systems since the heat starts on the floor.

The temperature profiles of a typical radiant floor heating system and a typical forced air heating system. Figure 1 shows the typical path of heat loss from a slab‐on‐grade floor. The heat loss occurs between the warm indoor air and the cold outdoor air through the ground.

techniques to model heat transfer between structures and the ground. through the three‐dimensional thermal coupling coefficient. Full Description Describes a three-dimensional parametric study of slab-on-grade heat transfer which gives a new perspective on both the validity of the F2 (proportionality constant) method and the relationship between two and three-dimensional heat transfer.

through the slab, particularly for the thin portion of the slab. Heat transfer through the thick portion of the slab is also significantly affected by the height of the rib and the width at the top of the rib.

Keywords: composite slab; heat transfer analysis; finite element detailed model; thermal boundary; thermal property; slab geometry 1. One of two classes for floors in contact with ground. The classes are: 1) heated slab-on-grade floors and 2) unheated slab-on-grade floors.

Heated slab-on-grade floors include all floors that are heated directly in order to provide heating to the space. This paper presents an analytical solution associated with the steady-periodic heat transfer for a typical slab-on-grade floor building foundation in contact with a nonhomogeneous soil medium.

In particular, the solution accounts for the impact of the above-grade wall thickness on the ground-coupled heat by: 1. a permeable ceiling will unlock the thermal mass in the slab.** Hard floorings such as tile, work well from a thermal perspective, but are rarely practical. Raised floors prevent radiant heat transfer with the concrete slab below, but still allow good convective heat transfer when used as a plenum for underfloor ventilation.***.

Numerical Modeling of Heat Transfer in Reinforced Concrete Maria Cowan Department of Civil Engineering and Geological Sciences REU Summer Advisors: Dr Kapil Khandelwal and Dr Yahya Kurama NSF Grant # REU Summer Advisors: Dr.

and Dr. CMMI Project Overview Fire engineering has become increasingly important in recent. A simple, but comprehensive model of heat transfer and solidification of the continuous casting of steel slabs is described, including phenomena in the mold and spray regions.

The model includes a one-dimensional (1-D) transient finite-difference calculation of heat conduction within the solidifying steel shell coupled with two-dimensional (2-D) steady-state heat Cited by: The problem of calculating transient heat transfer in concrete floor slabs is complicated due to ground coupling, which can require the numerical solution of two or three-dimensional transient conduction equations.

This paper presents a simplified method for calculating transient slab-on-ground heat transfer that can be incorporated within hourly simulation programs. Heat Transfer Engineering.

Impact Factor. Search in: Advanced search Heat Loss Via Concrete Slab Floors With External Vertical Edge Insulations. Dong Chen.

Modeling Microstructure Effect on Thermal Conductivity of Aerogel-Based Vacuum Insulation Panels. @article{osti_, title = {Evaluation of the Impact of Slab Foundation Heat Transfer on Heating and Cooling in Florida}, author = {Parker, D.

and Kono, J. and Vieira, R. and Gu, L.}, abstractNote = {During the last three decades of energy-efficiency research, there has been limited study of heat transfer to slab-on-grade foundations in cooling-dominated climates. References.

Bahnfleth, W.P. Three Dimensional Modeling of Heat Transfer from Slab Floors, Ph.D. dissertation, also published as USACERL TM E/11, University of Illinois. Bahnfleth, W.P. and C.O. Pedersen. A Three Dimensional Numerical Study of Slab-on-Grade Heat Transfer.

finding a difference lower than the 1% as regards the heat transfer evaluation through a flat slab. Finally, Renon () upgraded the methods developed by Seem et al.

() and Seem (), by modelling thermal bridges and explaining how transfer this technique into the solver engine of EnergyPlus. Deque et al. Introduction to Engineering Heat Transfer These notes provide an introduction to engineering heat transfer.

Heat transfer processes set limits to the performance of aerospace components and systems and the subject is one of an enormous range of application. The notes are intended to describe the three types of heat transfer and provideFile Size: KB.

earlier, the three-dimensional foundation heat transfer can be obtained from two-dimensional heat transfer using an effective foundation half width (Chuangchid and Krarti, ).

There are two types of foundations considered in this section: slab-on-grade floor and basement foundations. Z-transform and transfer function. Thermal Mass Modelling in Whole Building Simulation Tool, For Model Predictive Control of Peak Demand Limiting and Peak Load Shifting Heat Transfer Modes in Buildings Hollow Core Ventilated Slab System Active Thermal Mass, Hollow Core Slab, Modelling File Size: 3MB.

This book is nothing more than a general overview of radiant floor heating. If you've arrived here and are considering buying the book, you've likely spent a little time online gleaning what you can about radiant heat.

This book won't tell you much more than you have likely already learned. The writing is horrible/5(21). Before getting into further details, a review of some of the physics of heat transfer is in order. As you recall from undergraduate heat transfer, there are three basic modes of transferring heat: conduction, radiation, and convection.

Conduction is the transfer of heat through a medium by virtue of a temperature gradient in the Size: 2MB. Their combined citations are counted only for the first article.

Three-dimensional numerical study of slab-on-grade heat transfer. WP Bahnfleth, CO Pedersen. ASHRAE Transactions,Three-dimensional modelling of heat transfer from slab floors. WP Bahnfleth. CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL.

Abstract. Three-dimensional models coupling fluid flow, heat transfer, magnetic field and solidification for steel continuous casting process with FC-Mold were developed to calculate the growth of the solidification shell, which considered the washing effect of fluid flow on the solidified shell and proposed an entrapment criterion for : Lifeng Zhang, Qiangqiang Wang.

Radiant Floor Installation Handbook 1 A. Wirsbo PEX in a Slab or Overpour. 44 •A-1 Slab or Below Grade - Edge Insulation. 48 •A-2 Slab or Below Grade - Slab/Edge Insulation. 50 AQUAPEX® is cross-linked polyethylene (PEX) heat transfer tubing without an.

Concrete Slab Insulation Amount, Placement, & Vapor Barrier Placement for (Solar) Radiant Pdf Floors, What pdf thickness is needed under a passive-solar heated slab floor?

Where should floor slab insulation be placed to avoid heat loss? Where does the vapor barrier go under an insulated, heated floor slab?

Heated floors for car wash bays Questions &. This paper presents download pdf results of a numerical simulation of measured temperatures in a ground floor slab and the soil beneath it. Two- and three-dimensional calculations (2D and 3D) are performed using a widely utilised whole building thermal simulation program.

A multi-dimensional numerical conductive heat transfer module has been added to .