Titlebook: Control Systems for Heating, Ventilating and Air Conditioning; Roger W. Haines Book 1987 Van Nostrand Reinhold 1987 Direct Digital Control

認(rèn)識

Supervisory Control Systems,g use of central supervisory control systems. These systems allow one person, at a central location, to monitor and control the operation of up to several thousand elements of the heating, ventilating and air conditioning systems in the building or complex. The addition of alarm circuits and audio o

Harass

Central Plant Pumping and Distribution Systems,ious points in a building or complex of buildings. The plant is not necessarily centrally located with respect to the HVAC units. Some plants may have only one or two elements while others may contain a dozen or more chillers and boilers. Some large plants, which have grown over a period of years as

Hamper

Retrofit of Existing Control Systems,ed in the 50s, 60s and early 70s were concerned only with control for comfort, and minimization of energy consumption was seldom considered. Also, many existing systems do not perform in a satisfactory manner for either comfort or economy.

Delirium

Book 1987my readers. Thus you will find a number of small but important revisions, a dissertation on control "modes," and a much more detailed discussion of how electronic control devices work. There are a few places where I have corrected what I now perceive to be errors. I apologize for these. I have been

Fraudulent

Ornament

出價

季雨

gruelling

Special Control Systems,he majority of the work being currently designed, and necessarily, since most air conditioning systems can be adequately controlled without frills. The basic schemes discussed can be applied in many combinations to solve the great majority of control problems.

Merited

Retrofit of Existing Control Systems,ed in the 50s, 60s and early 70s were concerned only with control for comfort, and minimization of energy consumption was seldom considered. Also, many existing systems do not perform in a satisfactory manner for either comfort or economy.