User profiles for Alvin Lai

Lai, Alvin

City University of Hong Kong
Verified email at cityu.edu.hk
Cited by 6906

Modeling indoor particle deposition from turbulent flow onto smooth surfaces

ACK Lai, WW Nazaroff - Journal of aerosol science, 2000 - Elsevier
Particle deposition to indoor surfaces is frequently modeled by assuming that indoor air flow
is homogeneously and isotropically turbulent. Existing formulations of such models, based …

Indoor particulate matter of outdoor origin: importance of size-dependent removal mechanisms

WJ Riley, TE McKone, ACK Lai… - Environmental science & …, 2002 - ACS Publications
Adverse human health effects have been observed to correlate with levels of outdoor particulate
matter (PM), even though most human exposure to PM of outdoor origin occurs indoors. …

Effects of room furnishings and air speed on particle deposition rates indoors

TL Thatcher, ACK Lai, R Moreno-Jackson… - Atmospheric …, 2002 - Elsevier
Particle deposition to surfaces plays an important role in determining exposures to indoor
particles. However, the effects of furnishings and air speed on these rates have not been well …

Modeling particle distribution and deposition in indoor environments with a new drift–flux model

F Chen, CM Simon, ACK Lai - Atmospheric Environment, 2006 - Elsevier
A new drift–flux model for particle distribution and deposition in indoor environments is
developed. Gravitational settling and deposition are examined thoroughly and the model is …

Review of analytical models for heat transfer by vertical ground heat exchangers (GHEs): A perspective of time and space scales

M Li, ACK Lai - Applied Energy, 2015 - Elsevier
Ground (or geothermal) heat exchangers are attracting a great deal of attention as a way of
using shallow geothermal energy. This paper provides not only a critical review but also a …

New temperature response functions (G functions) for pile and borehole ground heat exchangers based on composite-medium line-source theory

M Li, ACK Lai - Energy, 2012 - Elsevier
This paper presents a new approach to modeling of heat transfer by ground heat exchangers,
involving unsteady heat conduction in composite media together with complex geometry. …

Inhalation transfer factors for air pollution health risk assessment

ACK Lai, TL Thatcher, WW Nazaroff - Journal of the Air & Waste …, 2000 - Taylor & Francis
To facilitate routine health risk assessments, we develop the concept of an inhalation transfer
factor (ITF). The ITF is defined as the pollutant mass inhaled by an exposed individual per …

Heat-source solutions to heat conduction in anisotropic media with application to pile and borehole ground heat exchangers

M Li, ACK Lai - Applied Energy, 2012 - Elsevier
This work analyzes influence of anisotropy of anisotropic soil on the processes of heat transfer
by ground heat exchangers used in ground-coupled heat pump systems. First, this paper …

Analytical model for short-time responses of ground heat exchangers with U-shaped tubes: Model development and validation

M Li, ACK Lai - Applied energy, 2013 - Elsevier
Short-time responses of borehole ground heat exchangers (GHEs) are difficult to predict
because they involve heat capacity effect and various arrangements of U-shaped tubes within …

Comparison of a new Eulerian model with a modified Lagrangian approach for particle distribution and deposition indoors

ACK Lai, FZ Chen - Atmospheric Environment, 2007 - Elsevier
Understanding of aerosol dispersion characteristics has many scientific and engineering
applications. It is recognized that Eulerian or Lagrangian approach has its own merits and …