HVAC: Heating, Ventilation & Air Conditioning Handbook for by Ali Vedavarz

By Ali Vedavarz

With over 1,000 pages protecting all basic and functional HVAC layout methods and techniques, this vintage reference is full of information and a wealth of data that's of serious use to the HVAC fashion designer and practitioner, in addition to to the scholar gaining knowledge of the intricacies of HVAC basics. not like the other instruction manual of its style, HVAC presents an in-depth therapy of themes through modular self-contained chapters that serve either as a guide for the skilled expert and as a primary reference for others. each one self-contained bankruptcy locations emphasis on graphical and tabular shows of knowledge which are helpful for simple realizing of basics and fixing difficulties of layout, install, and operation. every little thing you would like is true right here in a single entire volume!

Includes software program packages
- Bell and Gossett ESP-PLUS software program offers calculations for the choice of kit reminiscent of hydraulic pumps, warmth exchangers, and hydronic and steam process elements. It additionally is helping decide upon commercially on hand gear and components.
- Trane Load seven-hundred heating and cooling load calculation software program permits the consumer to take advantage of distinctive geometric, climate and publicity parameters to appropriately estimate load in the course of the heating and cooling cycles.

Primarily makes use of U.S. standard devices but additionally makes use of either SI and U.S. devices sometimes.

Show description

By Ali Vedavarz

With over 1,000 pages protecting all basic and functional HVAC layout methods and techniques, this vintage reference is full of information and a wealth of data that's of serious use to the HVAC fashion designer and practitioner, in addition to to the scholar gaining knowledge of the intricacies of HVAC basics. not like the other instruction manual of its style, HVAC presents an in-depth therapy of themes through modular self-contained chapters that serve either as a guide for the skilled expert and as a primary reference for others. each one self-contained bankruptcy locations emphasis on graphical and tabular shows of knowledge which are helpful for simple realizing of basics and fixing difficulties of layout, install, and operation. every little thing you would like is true right here in a single entire volume!

Includes software program packages
- Bell and Gossett ESP-PLUS software program offers calculations for the choice of kit reminiscent of hydraulic pumps, warmth exchangers, and hydronic and steam process elements. It additionally is helping decide upon commercially on hand gear and components.
- Trane Load seven-hundred heating and cooling load calculation software program permits the consumer to take advantage of distinctive geometric, climate and publicity parameters to appropriately estimate load in the course of the heating and cooling cycles.

Primarily makes use of U.S. standard devices but additionally makes use of either SI and U.S. devices sometimes.

Show description

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Additional info for HVAC: Heating, Ventilation & Air Conditioning Handbook for Design & Implementation

Sample text

The wet-bulb temperature is a function of both heat and mass transfer rates, while the adiabatic saturation temperature is a function of a thermodynamic equilibrium process. However, in practice, it has been found that for air-water-vapor mixtures at atmospheric pressures and temperatures, the wet-bulb and adiabatic saturation temperatures are essentially equal numerically. 92 in. Hg. The properties in this table are based on the thermodynamic temperature scale. This ideal scale differs only slightly from the practical temperature scales used for actual physical measurements.

Dry bulb temperature is plotted along the horizontal axis. The dry bulb temperature lines are straight but not exactly parallel and incline slightly to the left. Humidity ratio is plotted along the vertical axis on the right hand side of the chart. The scale is uniform with horizontal lines parallel. The saturation curve slopes upward from left to right. The location and positioning of the scales of the various properties as well as the constant value lines for these properties are shown in these simple charts which are not drawn to the actual scale.

Table 2-2 gives the properties of some ideal gases. 0003 Cp 2 P = Pa + Pv In HVAC study, psychrometry is commonly taken to mean the study of atmospheric moisture and its effect on buildings and building systems. R 2 Equation (2) can be written as Table 2-1. Composition of Dry Air Constituent Oxygen Nitrogen Argon Carbon dioxide (1) PV = nRT or (6) n =na + nv is the total number of moles in the mixture. To compare values for moist air assuming ideal gas behavior with actual table values, consider a saturated mixture of air and water vapor at 75°F.

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