quiz Flashcards
(58 cards)
Taking into consideration building design which does not have any sophisticated mechanical equipment in order to induce comfort conditions in building interiors
Passive Cooling
Consider most high technology inputs and equipment together with mechanical and moving parts.
Active system
In active systems, the initial cost of the building fabric will be
Low
Cost of passive cooling
Operation, Maintenance
Cost of active cooling
Project cost, material labor
Maximum wind exposure, maximum internal airflow, minimum radiant heat gain
Hot-Humid Climate
Minimum radiant heat gain, moderate wind resistance, moderate internal airflow
Hot-dry climate
Maximum thermal retention, maximum radiant heat gain, minimum wind resistance
Cool Climate
Moderate thermal retention, moderate radiant heat gain, slight wind expose (humidity control), Moderate internal airflow
Temperate climate
A form of energy generated by the random motion of molecules
Heat
Three processes by which heat is transferred
Condution, convection, radiation
The process in which heat energy is transferred from one vibrating molecule to the one immediatelt adjacent to it without any relative displacement of molecules
Conduction
The transfer of heat between a surface and a moving fluid or the transfer of heat by movement of the molecules from one point in a fluid to another.
At night the land cools faster than water, the resulting movement of air is from land to sea at the surface and from sea to land aloft
Land Breeze
The movement of air at higher levels is brought downwards closer to the ground by?
Eddy Diffusion
Wind strength at the ground is maximum by? and min at?
midday ; Night
Two orders of dependence can be established between wind strength and the temperature structure of a given wind speed;
- Dependence is substantially greater by night than by day 2.Dependence increases with proximity to the ground
Characteristics of Atmosphere Motion
Dimension, Gradient, Lumpness and streak, Eddying
This characteristics refers to the scale of the phrnomenon which can consist of any combination of the thermodynamic factors of length, mass, time, and temperature
Characteristics of atmosphere motion (Dimension)
the air in the atmosphere consist of gradient of varying density existing in a gravitational fluid.
Characteristics of atmosphere motion (Gradient)
is the tendency of the atmosphere to develop into vertical cells surrounded by relativley still air.
Characteristics of atmosphere motion (Lumpiness and Streakness)
Assiciated wuth the Lumpines and streakness of the atmosphere is a wide scale varying eddies and whirls
Characteristics of atmosphere motion (Eddying)
Forces Acting okn the air particle
Pressure force, Coriolis force, Centrifugal force, frictional force
Acting from a high pressure area at a low pressure area
Pressure force
